Grid Inventory Script

#===============================================================================#
#                          Grid Inventory Script v1.1                           #
#-------------------------------------------------------------------------------#
#     Made by DarkSchneider (original script) and Gus (edit and bug fixes)      #
#                                     ~~~                                       #
#         Special credits to Schwarz for draw_line and Blizzard for the         #
#                     Diablo 1 graphics used in this demo                       #
#-------------------------------------------------------------------------------#
#                         Description and instructions                          #
#  This script changes the inventory, making it grid-based, inspired on games   #
#  like Diablo, Resident Evil and Deus Ex. before installing it on your game,   #
#  MAKE SURE YOU HAVE ADAPTED YOUR DATABASE. All the items should start their   #
#  names with the format [#x#], being the first number the item width and the   #
#  second number the item height. See the demo's database for more info. Also   #
#  if you have any questions or problems with this script you can email me at   #
#             scripts.gus@gmail.com and I'll try to help you out.               #
#===============================================================================#

#===============================================================================#
# Customization variables and some info about them
#===============================================================================#
module Grid_Variables
    # Width of the grid, in number of tiles
    GRID_WIDTH = 19
    # Height of the grid, in number of tiles
    GRID_HEIGHT = 12

    # Color for items' backgrounds. (Red, Green, Blue, Opacity)
    COLOR_ITEMS = Color.new(0,0,200,50)
    COLOR_WEAPONS = Color.new(200,0,0,50)
    COLOR_ARMORS = Color.new(0,200,0,50)

    # Important items are items with a price of 0. They can't be sold, and, if
    # this variable is false, they won't be able to be discarded too.
    CAN_DROP_IMPORTANT_ITEMS = false

    # Big icons need to be exactly the size the item takes on the script, multi-
    # plied by 32. Take a look at the icons folder for clarification
    USE_BIG_ICONS = true

    # The big icons need to use exactly the same name as their item's icon, with
    # something in front of the name for identification. Default is "grid.".
    # IMPORTANT: Set this to "" if you're not using the big icons.
    BIG_ICONS_PREFIX = "grid."

    # The mini help window is the little window that shows the item name. If your
    # grid does not takes the entire window, you can set this to true.
    MINIHELP_CAN_BE_OUTSIDE_GRID = false

    # This preferably has to be a 640x480 (or whatever window size you're using)
    # picture, since it will allow you to change the dimensions without having to
    # edit the picture.
    GRID_BG_LOCATION = RPG::Cache.picture("gridbg")

    # When you replace an item, and then press esc, it will either do nothing
    # (play buzzer se) or draw it anywhere. If you want the second, set this
    # constant to false
    ALLOW_ESC_REPLACING = false
end

#===============================================================================#
# Main class, replaces the original Scene_Item
#===============================================================================#
class Scene_Item
    # The original script tried to use one inventory for each actor, but RPG Maker
    # doesn't supports that, so this is a workaround, easier than editing a lot of
    # code
    def initialize(actor_index = 0)
        @actor_index = actor_index
    end

    def main
        s1 = "Use"
        s2 = "Move"
        s3 = "Drop"
        @command_window = Window_Command.new(96, [s1, s2 , s3])
        @command_window.active = false
        @command_window.visible = false
        @command_window.z = 120 # So the icons don't overlap the window
        @help_window = Window_Help.new
        @grid = Window_Grid.new(@actor_index)
        @grid.active = true
        @grid.set = 0
        @grid.mode = nil
        # Associate help window
        @grid.help_window = @help_window
        # Make target window (set to invisible / inactive)
        @target_window = Window_Target.new
        @target_window.visible = false
        @target_window.active = false
        # Make target window for equiping items on the grid
        @target_equip = Window_Target_Equip.new
        @target_equip.visible = false
        @target_equip.active = false
        # To avoid problems when moving items
        @moving_item = false
        @call_methods = ""

        # Execute transition
        Graphics.transition
        # Main loop
        loop do
            # Update game screen
            Graphics.update
            # Update input information
            Input.update
            # Frame update
            update
            # Abort loop if screen is changed
            if $scene != self
                break
            end
        end
        # Prepare for transition
        Graphics.freeze
        @cursor_icon.dispose if @cursor_icon != nil
        # Dispose of windows
        @command_window.dispose
        @help_window.dispose
        @target_window.dispose
        @target_equip.dispose
        @grid.dispose
    end
    #--------------------------------------------------------------------------
    # * Frame Update
    #--------------------------------------------------------------------------
    def update
        # Update windows
        @command_window.update
        @help_window.update
        @target_window.update
        @target_equip.update
        @grid.update
        @grid.movingItemUpdate(@moving_item)
        if @command_window.active
            # Disabling drop option if item price is 0
            if !Grid_Variables::CAN_DROP_IMPORTANT_ITEMS
                if @grid.item.price == 0
                    @command_window.disable_item(2)
                else
                    @command_window.enable_item(2)
                end
            end

            # Disabling use option if item isn't usable
            if !$game_party.item_can_use?(@grid.item.id) && @grid.item.is_a?(RPG::Item)
                @command_window.disable_item(0)
            else
                @command_window.enable_item(0)
            end

            update_command
            return
        end

        @command_window.x = @grid.x + (@grid.cursor_rect.x + 16) + (@grid.cursor_rect.width)
        @command_window.y = @grid.y + (@grid.cursor_rect.y + 16) - (@command_window.height/ 2) + (@grid.cursor_rect.height / 2)
        @command_window.x = @grid.x + @grid.cursor_rect.x - @command_window.width + 16 if @grid.cursor_rect.x + @grid.cursor_rect.height >= ((Grid_Variables::GRID_WIDTH - 2)* 32)

        if @grid.active
            if Input.trigger?(Input::C) && @grid.item != nil && !@moving_item
                # Play decision SE
                $game_system.se_play($data_system.decision_se)
                @command_window.active = true
                @command_window.visible = true
                @grid.active = false
            end

            # If B button was pressed
            if Input.trigger?(Input::B) && !@moving_item
                # Play cancel SE
                $game_system.se_play($data_system.cancel_se)
                # Switch to menu screen
                $scene = Scene_Menu.new(0)
                return
            end

            # Some methods have to be called here on the update, so this does the job
            case @call_methods
            when "use"
                use_item
            when "cancel moving"
                @cursor_icon = Cursor_Icon.new if @cursor_icon == nil
                @cursor_icon.visible = false
            when "move2"
                @cursor_icon.update
                update_move2
            end
        end
        if @target_window.active
            update_target
            return
        elsif @target_equip.active
            update_target_equip
            return
        end
    end

    #--------------------------------------------------------------------------
    # * Command Window Update
    #--------------------------------------------------------------------------
    def update_command
        if Input.trigger?(Input::B)
            @command_window.active = false
            @command_window.visible = false
            @grid.active = true
            return
        end
        if Input.trigger?(Input::C)
            # Branch by command window cursor position
            case @command_window.index
            when 0 # use
                # Play decision SE
                $game_system.se_play($data_system.decision_se)
                @call_methods = "use"
            when 1 # move
                # Play equip SE
                $game_system.se_play($data_system.equip_se)
                @cursor_icon = Cursor_Icon.new if @cursor_icon == nil
                @cursor_icon.visible = false
                move_item
            when 2 # drop
                if @grid.item != nil
                    if !Grid_Variables::CAN_DROP_IMPORTANT_ITEMS
                        if @grid.item.price != 0
                            # Play cancel SE
                            $game_system.se_play($data_system.cancel_se)
                            @grid.delete_item(true)
                        else
                            # Play buzzer SE
                            $game_system.se_play($data_system.buzzer_se)
                        end
                    else
                        @grid.delete_item(true)
                    end
                end
            end
            @command_window.active = false
            @command_window.visible = false
            @grid.active = true
            return
        end
    end

    #--------------------------------------------------------------------------
    # * Frame Update (when item window is active)
    #--------------------------------------------------------------------------
    def use_item
        # Get currently selected data on the item window
        @item = @grid.item
        # If it's a weapon or armor
        if !@item.is_a?(RPG::Item)
            @grid.active = false
            @target_equip.x = @grid.x + @grid.cursor_rect.x + (@grid.cursor_rect.width / 2) >= 320 ? 0 : 304
            @target_equip.visible = true
            @target_equip.active = true
            @target_equip.index = 0

            for i in 0...$game_party.actors.size
                if $game_party.actors[i].equippable?(@item)
                    @target_equip.enable_actor(i)
                else
                    @target_equip.disable_actor(i)
                end
            end

            @target_equip.refresh
        else
            # If it can't be used
            unless $game_party.item_can_use?(@item.id)
                # Play buzzer SE
                $game_system.se_play($data_system.buzzer_se)
                @call_methods = ""
                return
            end

            # If effect scope is an ally
            if @item.scope >= 3
                # Activate target window
                @grid.active = false
                @target_window.x = @grid.x + @grid.cursor_rect.x + (@grid.cursor_rect.width / 2) >= 320 ? 0 : 304
                @target_window.visible = true
                @target_window.active = true
                # Set cursor position to effect scope (single / all)
                if @item.scope == 4 || @item.scope == 6
                    @target_window.index = -1
                else
                    @target_window.index = 0
                end
                # If effect scope is other than an ally
            else
                # If command event ID is valid
                if @item.common_event_id > 0
                    # Command event call reservation
                    $game_temp.common_event_id = @item.common_event_id
                    # Play item use SE
                    $game_system.se_play(@item.menu_se)
                    # If consumable
                    if @item.consumable
                        # Decrease used items by 1
                        $game_party.eraseDat(@item.id, "i", 1)
                        # Draw item window item
                        @grid.delete_item
                    end
                    # Switch to map screen
                    $scene = Scene_Map.new
                    return
                end
            end
        end
        @call_methods = ""
        return
    end
    #--------------------------------------------------------------------------
    # * Frame Update (when target window is active)
    #--------------------------------------------------------------------------
    def update_target
        # If B button was pressed
        if Input.trigger?(Input::B)
            # Play cancel SE
            $game_system.se_play($data_system.cancel_se)
            # If unable to use because items ran out
            unless $game_party.item_can_use?(@item.id)
                # Remake item window contents
                @grid.refresh
            end
            # Erase target window
            @grid.active = true
            @target_window.visible = false
            @target_window.active = false
            return
        end
        # If C button was pressed
        if Input.trigger?(Input::C)
            # If items are used up
            if @grid.item_del?
                # Play buzzer SE
                $game_system.se_play($data_system.buzzer_se)
                return
            end
            # If target is all
            if @target_window.index == -1
                # Apply item effects to entire party
                used = false
                for i in $game_party.actors
                    used |= i.item_effect(@item)
                end
            end
            # If single target
            if @target_window.index >= 0
                # Apply item use effects to target actor
                target = $game_party.actors[@target_window.index]
                used = target.item_effect(@item)
            end
            # If an item was used
            if used
                # Play item use SE
                $game_system.se_play(@item.menu_se)
                # If consumable
                if @item.consumable
                    @grid.delete_item(true)
                end
                # Remake target window contents
                @target_window.refresh
                # If all party members are dead
                if $game_party.all_dead?
                    # Switch to game over screen
                    $scene = Scene_Gameover.new
                    return
                end
                # If common event ID is valid
                if @item.common_event_id > 0
                    # Common event call reservation
                    $game_temp.common_event_id = @item.common_event_id
                    # Switch to map screen
                    $scene = Scene_Map.new
                    return
                end

                if Input.trigger?(Input::B)
                    # Erase target window
                    @grid.active = true
                    @target_window.visible = false
                    @target_window.active = false
                    return
                end

            end
            # If item wasn't used
            unless used
                # Play buzzer SE
                $game_system.se_play($data_system.buzzer_se)
            end
            return
        end
    end

    #--------------------------------------------------------------------------
    # * Frame Update (when target equip window is active)
    #--------------------------------------------------------------------------
    def update_target_equip
        # If B button was pressed
        if Input.trigger?(Input::B)
            # Play cancel SE
            $game_system.se_play($data_system.cancel_se)
            # If unable to use because items ran out
            unless $game_party.item_can_use?(@item.id)
                # Remake item window contents
                @grid.refresh
            end
            # Erase target window
            @grid.active = true
            @target_equip.visible = false
            @target_equip.active = false
            return
        end

        # If C button was pressed
        if Input.trigger?(Input::C)
            actor = @target_equip.index
            if @target_equip.disabled?(actor)
                # Play buzzer SE
                $game_system.se_play($data_system.buzzer_se)
                return
            end

            if @item.is_a?(RPG::Weapon)
                equipped = $data_weapons[$game_party.actors[actor].weapon_id]
                type = "w"
                itemKind = 0
            elsif @item.is_a?(RPG::Armor)
                type = "a"
                itemKind = $data_armors[@item.id].kind + 1 # +1 because weapons are already at index 0
                case $data_armors[@item.id].kind
                when 0
                    equipped = $data_armors[$game_party.actors[actor].armor1_id]
                when 1
                    equipped = $data_armors[$game_party.actors[actor].armor2_id]
                when 2
                    equipped = $data_armors[$game_party.actors[actor].armor3_id]
                when 3
                    equipped = $data_armors[$game_party.actors[actor].armor4_id]
                end
            else
                equipped = nil
            end

            # Check to see if the equipped item and the select item are the same, if
            # so pretend to switch
            if equipped.id == @item.id
                # Play equip SE
                $game_system.se_play($data_system.equip_se)
                @grid.active = true
                @target_equip.visible = false
                @target_equip.active = false
                @call_methods = ""
                return
            end

            # if actor has an item equipped, we need a grid space verification
            if equipped != nil
                gridFull = @grid.checkWithoutDeleting(@item.id, type, equipped.id)
            end

            if !gridFull || equipped == nil
                # Play equip SE
                $game_system.se_play($data_system.equip_se)
                @grid.delete_item
                $game_party.actors[actor].grid_equip(itemKind, @item == nil ? 0 : @item.id)
                $game_party.eraseData(type, @item.id, 1)
                @grid.refresh
                @grid.active = true
                @target_equip.visible = false
                @target_equip.active = false
                @call_methods = ""
                return
            else
                # Play buzzer SE
                $game_system.se_play($data_system.buzzer_se)
            end

            if Input.trigger?(Input::B)
                # Play cancel SE
                $game_system.se_play($data_system.cancel_se)
                @call_methods = ""
                return
            end
            return
        end
    end

    #--------------------------------------------------------------------------
    # * Frame Update (when moving item)
    #--------------------------------------------------------------------------
    def move_item
        if @grid.item != nil
            @grid.get_item
            # Setting the bitmaps for the Cursor_Icon
            if Grid_Variables::USE_BIG_ICONS
                bitmap = Bitmap.new(@grid.itemWidth * 32, @grid.itemHeight * 32)
                x, y = 0, 0
            else
                bitmap = Bitmap.new(32,32)
                x, y = 4 + ((@grid.itemWidth * 32) / 2) - 16, 4 + ((@grid.itemHeight * 32) / 2) - 16
            end


            bitmap.blt(0,0,@grid.contents,Rect.new(@grid.cursor_rect.x + x,
                    @grid.cursor_rect.y + y,@grid.cursor_rect.width,@grid.cursor_rect.height))

            @cursor_icon.refresh(bitmap, @grid.itemWidth, @grid.itemHeight)
            @grid.cursor_rect.width = @cursor_icon.bitmap.width
            @grid.cursor_rect.height = @cursor_icon.bitmap.height
            @cursor_icon.x = @grid.cursor_rect.x + @grid.x + 16
            @cursor_icon.y = @grid.cursor_rect.y + @grid.y + 16
            @cursor_icon.visible = true
            @grid.delete_item
            @moving_item = true
            @call_methods = "move2"
        end
        return
    end

    #--------------------------------------------------------------------------
    # * Frame Update (when replacing item)
    #--------------------------------------------------------------------------
    def replace_item
        @grid.updateItemSize
        @grid.get_item2
        @grid.delete_item_replace
        @grid.redraw_item("replace")
        @grid.transfer_get

        @grid.updateItemSizeFirstDraw(@grid.item_saved[0], @grid.item_saved[1])
        if @grid.item_saved[1] == "i" || @grid.item_saved[1] == "w" || @grid.item_saved[1] == "a"
            bitmap = RPG::Cache.icon(Grid_Variables::BIG_ICONS_PREFIX + @grid.item(@grid.item_saved[1], @grid.item_saved[0]).icon_name)
        else
            bitmap = Bitmap.new(@grid.itemWidth * 32, @grid.itemHeight * 32)
        end

        if Grid_Variables::USE_BIG_ICONS
            x, y = 0, 0
        else
            x, y = 4 + ((@grid.itemWidth * 32) / 2) - 16, 4 + ((@grid.itemHeight * 32) / 2) - 16
        end

        bitmap.blt(0,0,Bitmap.new(@grid.itemWidth * 32, @grid.itemHeight * 32),Rect.new(@grid.item_saved[2] + x,
                @grid.item_saved[3] + y,@grid.cursor_rect.width,@grid.cursor_rect.height))

        @cursor_icon.refresh(bitmap, @grid.itemWidth, @grid.itemHeight)
        @grid.cursor_rect.width = @cursor_icon.bitmap.width
        @grid.cursor_rect.height = @cursor_icon.bitmap.height
        @cursor_icon.x = @grid.cursor_rect.x + @grid.x + 16
        @cursor_icon.y = @grid.cursor_rect.y + @grid.y + 16
        @cursor_icon.visible = true
        @moving_item2 = true
        @call_methods = "move2"
    end

    #--------------------------------------------------------------------------
    # * Managing the Cursor_Icon and waiting for input
    #--------------------------------------------------------------------------
    def update_move2
        if Input.trigger?(Input::B)
            if !@moving_item2 # blocks esc if moving a replaced item
                # Play cancel SE
                $game_system.se_play($data_system.cancel_se)
                # Switch to menu screen
                @grid.redraw_item(false)
                #@grid.mode = 1
                @call_methods = "cancel moving"
                @moving_item = false
                return
            elsif @moving_item2 && !Grid_Variables::ALLOW_ESC_REPLACING
                $game_system.se_play($data_system.cancel_se)
                if !$game_party.isGridFull?(@grid.item_saved[0], @grid.item_saved[1])
                    pos = $game_party.set_item(@grid.item_saved[0], @grid.item_saved[1], true)
                    @grid.draw_item(@grid.item_saved[0], @grid.item_saved[1], pos[0] , pos[1])
                else
                    $game_party.eraseData(@grid.item_saved[1], @grid.item_saved[0], 1)
                end
                @call_methods = "cancel moving"
                @moving_item = false
                @moving_item2 = false
            else
                $game_system.se_play($data_system.buzzer_se)
            end
        end

        @grid.cursor_rect.width = @cursor_icon.bitmap.width
        @grid.cursor_rect.height = @cursor_icon.bitmap.height
        @cursor_icon.x = @grid.cursor_rect.x + @grid.x + 16
        @cursor_icon.y = @grid.cursor_rect.y + @grid.y + 16

        if @grid.empty?
            @cursor_icon.blink_on
            @cursor_icon.tone.set(155,0,0,0)
        else
            @cursor_icon.blink_off
            @cursor_icon.tone.set(155,0,0,255)
        end

        if Input.trigger?(Input::C)
            empty = @grid.empty?
            if empty == true
                @grid.redraw_item
                @cursor_icon.visible = false

                # Play equip SE
                $game_system.se_play($data_system.equip_se)

                @call_methods = ""
                @moving_item = false
                @moving_item2 = false
            elsif empty == "replace"
                # Play equip SE
                $game_system.se_play($data_system.equip_se)
                @call_methods = ""
                replace_item
            else
                $game_system.se_play($data_system.buzzer_se)
            end
            return
        end
    end
end

#===============================================================================#
# This edit removes the [#x#] from the item name, and passes it to $data_grid
#===============================================================================#
class Scene_Title
    alias old_main main
    def main
        old_main

        $data_grid = [], [], [] # index 0: items, 1: weapons, 2: armors

        # Looping three times, each time for a different item type
        for i in 0..2
            case i
            when 0
                type = $data_items
            when 1
                type = $data_weapons
            when 2
                type = $data_armors
            end

            # Editing the item name and adding the item size to the grid
            for j in 0..type.length - 1
                if type[j] != nil && type[j].name[0,1] == "["
                    $data_grid[i][j] = type[j].name.match(/\[(.*)\]/)[1]
                    type[j].name = type[j].name.gsub(/\[(.*)\]/, "").lstrip
                end
            end
        end
    end
end

#===============================================================================#
# This edit is to avoid losing money when buying more itens than you can carry.
# You will only be able to buy a number of items until your inventory is full,
# and you will only be charged for those items.
#===============================================================================#
class Scene_Shop
    #--------------------------------------------------------------------------
    # * Frame Update
    #--------------------------------------------------------------------------
    def buy_item(item, number)
        if !$game_party.isGridFull?(item.id, "", item)

            case item
            when RPG::Item
                amountBought = $game_party.gain_item(item.id, number)
            when RPG::Weapon
                amountBought = $game_party.gain_weapon(item.id, number)
            when RPG::Armor
                amountBought = $game_party.gain_armor(item.id, number)
            end

            if amountBought != nil
                number = amountBought - 1
            end

            $game_party.lose_gold(number * @item.price)
            $game_system.se_play($data_system.shop_se)
        else
            $game_system.se_play($data_system.buzzer_se)
            @buy_window.gridFull
        end
    end

    # Edit to use buy_item instead of the default way
    def update_number
        if Input.trigger?(Input::B)
            $game_system.se_play($data_system.cancel_se)
            @number_window.active = false
            @number_window.visible = false
            case @command_window.index
            when 0  # Buy
                @buy_window.active = true
                @buy_window.visible = true
            when 1  # Sell
                @sell_window.active = true
                @sell_window.visible = true
                @status_window.visible = false
            end
            return
        end
        if Input.trigger?(Input::C)
            @number_window.active = false
            @number_window.visible = false
            case @command_window.index
            when 0  # Buy
                buy_item(@item, @number_window.number)
                @gold_window.refresh
                @status_window.refresh
                @buy_window.active = true
                @buy_window.visible = true
            when 1  # Sell
                $game_system.se_play($data_system.shop_se)
                $game_party.gain_gold(@number_window.number * (@item.price / 2))
                case @item
                when RPG::Item
                    $game_party.lose_item(@item.id, @number_window.number)
                when RPG::Weapon
                    $game_party.lose_weapon(@item.id, @number_window.number)
                when RPG::Armor
                    $game_party.lose_armor(@item.id, @number_window.number)
                end
                @gold_window.refresh
                @sell_window.refresh
                @status_window.refresh
                @sell_window.active = true
                @sell_window.visible = true
                @status_window.visible = false
            end
            return
        end
    end
end

#===============================================================================#
# This edit is to show "Inventory is full!" on the shop help window
#===============================================================================#
class Window_ShopBuy < Window_Selectable
    def update_help
        # Removing the message if player presses up or down
        if @gridIsFull
            if Input.trigger?(Input::UP) || Input.trigger?(Input::DOWN)
                @gridIsFull = false
            end
        end

        @help_window.set_text(self.item == nil ? "" : self.item.description)
        @help_window.set_text("Inventory is full!") if @gridIsFull
    end

    # Setting this for remote access later
    def gridFull
        @gridIsFull = true
    end
end

#===============================================================================#
# This edit is to show "Inventory is full!" on the equip help window
#===============================================================================#
class Scene_Equip
    def update_item
        # Se o botão B for pressionado
        if Input.trigger?(Input::B)
            # Reproduzir SE de cancelamento
            $game_system.se_play($data_system.cancel_se)
            # Ativar janela da direita
            @right_window.active = true
            @item_window.active = false
            @item_window.index = -1
            return
        end
        # Se o botão C for pressionado
        if Input.trigger?(Input::C)
            # Reproduzir SE de Equipamento
            $game_system.se_play($data_system.equip_se)
            # Selecionar dados escolhidos na janela de Item
            item = @item_window.item
            # Mudar Equipamento
            equip = @actor.equip(@right_window.index, item == nil ? 0 : item.id)
            @right_window.gridFull if equip == nil
            # Ativar janela da direita
            @right_window.active = true
            @item_window.active = false
            @item_window.index = -1
            # Recriar os conteúdos da janela de Itens e da direita
            @right_window.refresh
            @item_window.refresh
            return
        end
    end
end

#===============================================================================#
# Same as above
#===============================================================================#
class Window_EquipRight < Window_Selectable
    def update_help
        if @gridIsFull
            if Input.trigger?(Input::UP) || Input.trigger?(Input::DOWN)
                @gridIsFull = false
            end
        end
        @help_window.set_text(self.item == nil ? "" : self.item.description)
        @help_window.set_text("Inventory is full!") if @gridIsFull
    end

    def gridFull
        @gridIsFull = true
    end
end

#===============================================================================#
# This is an edit to enable a command window item after it has been disabled. As
# far as I know there is no default way to do this.
#===============================================================================#
class Window_Command < Window_Selectable
    def enable_item(index)
        draw_item(index, normal_color)
    end
end

#===============================================================================#
# This edit changes the behavior of Window_Selectable if the grid is active
#===============================================================================#
class Window_Selectable < Window_Base
    alias old_initialize initialize
    def initialize(x, y, width, height)
        old_initialize(x, y, width, height)
        if self.is_a?(Window_Grid)
            @x = 0
            @y = 0
        end
    end

    alias old_update update
    def update
        if !self.is_a?(Window_Grid)
            old_update
            return
        end
        super

        item = $game_party.actors[@actor_index].item_grid

        # If cursor is movable
        if self.active and @x >= 0
            # Using special directional commands if the user is moving an item. Without
            # this sometimes you might get crashes when moving items, since the script
            # can "teleport" your cursor to a coordinate that doesn't exists.
            if self.movingItem?
                if Input.repeat?(Input::DOWN)
                    if @y == item.size - @itemHeight
                        @y = 0
                    else
                        @y += 1
                    end

                    $game_system.se_play($data_system.cursor_se)
                end
                if Input.repeat?(Input::UP)
                    if @y == 0
                        @y = item.size - @itemHeight
                    else
                        @y -= 1
                    end

                    $game_system.se_play($data_system.cursor_se)
                end
                if Input.repeat?(Input::RIGHT)
                    if @x == item[@y].size - @itemWidth
                        @x = 0
                    else
                        @x += 1
                    end
                    $game_system.se_play($data_system.cursor_se)
                end
                if Input.repeat?(Input::LEFT)
                    if @x == 0
                        @x = item[@y].size - @itemWidth
                    else
                        @x -= 1
                    end

                    $game_system.se_play($data_system.cursor_se)
                end
            else
                # This makes the cursor select the entire item, no matter which slot it
                # is in
                if item[@y][@x][1][0,1] == "["
                    itemSplit = item[@y][@x][1].gsub(/[\[\]]/, "").split('x')
                    iH = itemSplit[0].to_i
                    iW = itemSplit[1].to_i
                    @x -= iW
                    @y -= iH
                end

                if Input.repeat?(Input::DOWN)
                    # if @y is at the last tile or above an item that is covering the last
                    # tile (and this item exists)
                    if @y == item.size - 1 || (@y == item.size - @itemHeight && item[@y][@x][1] != "")
                        @y = 0
                    else
                        @y += item[@y][@x][1] != "" ? @itemHeight : 1 #if the current slot is an item, add the item height, else add 1
                    end

                    $game_system.se_play($data_system.cursor_se)
                end

                if Input.repeat?(Input::UP)
                    # since whenever the item is selected the @y goes to the top tile,
                    # there's no need for special checks
                    if @y == 0
                        @y = item.size - 1
                    else
                        @y -= 1
                    end

                    $game_system.se_play($data_system.cursor_se)
                end

                if Input.repeat?(Input::RIGHT)
                    # if @x is at the last tile or above an item that is covering the last
                    # tile (and this item exists)
                    if @x == item[@y].size - 1 || (@x == item[@y].size - @itemWidth && item[@y][@x][1] != "")
                        @x = 0
                    else
                        @x += item[@y][@x][1] != "" ? @itemWidth : 1 #if the current slot is an item, add the item height, else add 1
                    end

                    $game_system.se_play($data_system.cursor_se)
                end

                if Input.repeat?(Input::LEFT)
                    # since whenever the item is selected the @x goes to the top-left tile,
                    # there's no need for special checks
                    if @x == 0
                        @x = item[@y].size - 1
                    else
                        @x -= 1
                    end

                    $game_system.se_play($data_system.cursor_se)
                end
            end
        end
        # Update help text (update_help is defined by the subclasses)
        if self.active and @help_window != nil
            update_help
        end
        # Update cursor rectangle
        update_cursor_rect
    end

    def hide_cursor
        self.cursor_rect.empty
    end
end

#===============================================================================#
# The main grid window
#===============================================================================#
class Window_Grid < Window_Selectable

    attr_accessor :mode
    attr_reader :itemWidth
    attr_reader :itemHeight
    attr_reader :item_saved
    attr_reader :item_saved2

    def initialize(actor_index)
        # This will center the grid. Feel free to edit it if you don't want that
        super((640/2)-(((Grid_Variables::GRID_WIDTH * 32) + 32) / 2), # x
            32 + (480 / 2) - (((Grid_Variables::GRID_HEIGHT * 32) + 32) / 2), # y
            (Grid_Variables::GRID_WIDTH * 32)+33, # width
            (Grid_Variables::GRID_HEIGHT * 32)+33) # height

        self.contents = Bitmap.new(width - 32, height - 32)
        self.opacity = 0
        # This window does nothing, it's there just to replace the otherwise black
        # background.
        @dummy_window = Window_Base.new(0, 64, 640, 480 - 64)
        @dummy_window.z = 0
        @window = Window_Base.new(x , y , width, height)
        @window.contents = Bitmap.new(width - 32, height - 32)
        @window.z = self.z - 4
        @window.opacity = 0
        @grid_color = Sprite.new
        @grid_color.bitmap = Bitmap.new(width - 32, height - 32)
        @grid_color.x = self.x + 16
        @grid_color.y = self.y + 16
        @grid_color.z = @window.z + 2
        @actor_index = actor_index
        @mode = 0
        @mini_help = Mini_Help.new
        self.set = -1
        n = self.contents.width / 32
        m = self.contents.height / 32
        @column_max = n
        draw_grid
        @itemWidth = 1
        @itemHeight = 1
        @movingItem = false
        refresh
    end

    def draw_grid
        gridHeight = Grid_Variables::GRID_HEIGHT * 32
        gridWidth = Grid_Variables::GRID_WIDTH * 32
        # Creates the window bg
        @window.contents.blt(0, 0, Grid_Variables::GRID_BG_LOCATION, Rect.new(0, 0, gridWidth, gridHeight))
        i = 0
        color = Color.new(150,150,150)
        while i <= gridHeight
            draw_line(-1, i, gridWidth + 1, i, color)
            i += 32
        end
        i = 0
        while i <= gridWidth
            draw_line(i, 0, i, gridHeight, color)
            i += 32
        end
    end

    def draw_line(sx, sy, ex, ey, color)
        rad = Math.atan2(ey-sy, ex-sx)
        dx = Math.cos(rad)
        dy = Math.sin(rad)
        while (sx - ex).abs > 1 || (sy - ey).abs > 1
            sx += dx
            sy += dy
            @window.contents.set_pixel(sx, sy, color)
        end
    end

    def refresh
        @item_max = 0
        item = $game_party.actors[@actor_index].item_grid
        for i in 0..item.size - 1
            for j in 0..item[i].size - 1
                if item[i][j][0] == 0 and (item[i][j][1] == "i" or item[i][j][1] == "w" or item[i][j][1] == "a")
                    @item_max += 1
                end
            end
        end

        for i in 0..item.size - 1
            for j in 0..item[i].size - 1
                draw_item(item[i][j][0], item[i][j][1], i , j)
            end
        end
    end

    # Updates the @movingItem variable. Mostly used on remote access
    def movingItemUpdate(moving_item)
        @movingItem = moving_item
    end

    # Returns true or false, depending on @movingItem. Mostly used on remote access
    def movingItem?
        movingItemUpdate(@movingItem)
        return @movingItem
    end


    def update_cursor_rect
        # @x is the cursor's x
        if @x < 0
            self.cursor_rect.empty
            return
        end

        # Assign the parameters in the item's name to the cursor
        if item != nil
            updateItemSize if !@movingItem
            cursor_width = @itemWidth * 32
            cursor_height = @itemHeight * 32
        else
            # Default values in case the item name has no parameters
            case $game_party.actors[@actor_index].item_grid[@y][@x][1]
            when "i" # Item, uses 1x1
                cursor_width = 32
                cursor_height = 32
            when "w" # Weapon, uses 1x3
                cursor_width = 32
                cursor_height = 96
            when "a" # Armor, uses 2x3
                cursor_width = 64
                cursor_height = 96
            else
                cursor_width = 32
                cursor_height = 32
            end
        end


        # Calculate cursor coordinates
        x = @x * 32
        y = @y * 32

        # Update cursor rectangle
        self.cursor_rect.set(x, y, cursor_width, cursor_height)
    end

    # Deletes the item from the grid. If removeData is true, also removes the item
    # from inventory.
    def delete_item(removeData = false)
        type = $game_party.actors[@actor_index].item_grid[@y][@x][1]
        item_id = $game_party.actors[@actor_index].item_grid[@y][@x][0]
        if type != ""   || type[0,1] != "["
            iH, iW = 0, 0
            @grid_color.bitmap.fill_rect(@x*32+1, @y*32+1, (@itemWidth * 32) - 1, (@itemHeight * 32) - 1, Color.new(0,0,0,0))
            self.contents.fill_rect(@x*32, @y*32, @itemWidth*32, @itemHeight*32, Color.new(0,0,0,0))

            for iH in 0...@itemHeight.to_i
                for iW in 0...@itemWidth.to_i
                    $game_party.actors[@actor_index].item_grid[@y + iH][@x + iW][0] = 0
                    $game_party.actors[@actor_index].item_grid[@y + iH][@x + iW][1] = ""
                    #iW = 0
                end
            end
        end

        if removeData
            $game_party.eraseData(type, item_id, 1)
        end
    end

    # This is a special delete_item, using the @item_saved array as parameters
    def delete_item_replace
        item_id = @item_saved2[0]
        type = @item_saved2[1]
        itemX = @item_saved2[2]
        itemY = @item_saved2[3]
        if type != ""
            updateItemSizeFirstDraw(item_id, type)
            @grid_color.bitmap.fill_rect((itemX)*32+1, (itemY)*32+1, (@itemWidth * 32) - 1, (@itemHeight * 32) - 1, Color.new(0,0,0,0))
            self.contents.fill_rect((itemX)*32, (itemY)*32, @itemWidth*32, @itemHeight*32, Color.new(0,0,0,0))

            for iH in 0...@itemHeight.to_i
                for iW in 0...@itemWidth.to_i
                    $game_party.actors[@actor_index].item_grid[itemY + iH][itemX + iW][0] = 0
                    $game_party.actors[@actor_index].item_grid[itemY + iH][itemX + iW][1] = ""
                end
            end
        end
    end

    # This iis a method for the grid equip feature. It "pretends" to delete the
    # item to see if there is enough space to unequip the equipped item.
    def checkWithoutDeleting(item_id, type, equip_id)
        for iH in 0...@itemHeight.to_i
            for iW in 0...@itemWidth.to_i
                $game_party.actors[@actor_index].item_grid[@y + iH][@x + iW][0] = 0
                $game_party.actors[@actor_index].item_grid[@y + iH][@x + iW][1] = ""
            end
        end

        flag = $game_party.isGridFull?(equip_id, type)

        for iH in 0...@itemHeight.to_i
            for iW in 0...@itemWidth.to_i
                if iH == 0 && iW == 0
                    $game_party.actors[@actor_index].item_grid[@y + iH][@x + iW][0] = item_id
                    $game_party.actors[@actor_index].item_grid[@y + iH][@x + iW][1] = type
                else
                    $game_party.actors[@actor_index].item_grid[@y + iH][@x + iW][0] = item_id
                    $game_party.actors[@actor_index].item_grid[@y + iH][@x + iW][1] = "[#{iH}x#{iW}]"
                end
            end
        end
        return flag
    end

    # Updating the @itemWidth and @itemHeight variables
    def updateItemSize
        if item != nil && itemSize != nil
            gridValues = itemSize.split('x')
            @itemWidth = gridValues[0].to_i
            @itemHeight = gridValues[1].to_i
        else
            @itemWidth = 0
            @itemHeight = 0
        end
    end

    # Manually updating the @itemWidth and @itemHeight variables.
    def updateItemSizeFirstDraw(item_id, type)
        item = itemSize(item_id, type)

        if item != nil
            gridValues = item.split('x')
            @itemWidth = gridValues[0].to_i
            @itemHeight = gridValues[1].to_i
        end
    end

    # Checking the item type and returning the correct $data
    def item(type = nil, id = nil)
        if type == nil && id == nil
            id = $game_party.actors[@actor_index].item_grid[@y][@x][0]
            type = $game_party.actors[@actor_index].item_grid[@y][@x][1]
        end

        case type
        when "i"
            return $data_items[id]
        when "w"
            return $data_weapons[id]
        when "a"
            return $data_armors[id]
        else
            return nil
        end
    end

    # Returns the item size from the $data_grid variables
    def itemSize(id = nil, type = nil)
        if type == nil && id == nil
            id = $game_party.actors[@actor_index].item_grid[@y][@x][0]
            type = $game_party.actors[@actor_index].item_grid[@y][@x][1]
        end

        case type
        when "i"
            return $data_grid[0][id]
        when "w"
            return $data_grid[1][id]
        when "a"
            return $data_grid[2][id]
        else return nil
        end
    end

    # Checking if the item is unusable or not, I guess. This was here on the
    # original script
    def item_del?
        if $game_party.actors[@actor_index].item_grid[@y][@x][0] == 0
            # Unusable
            return true
        else
            return false
        end
    end

    def dispose
        super
        @window.dispose
        @dummy_window.dispose
        @grid_color.dispose
        @mini_help.dispose
    end

    # Updating the help window (with item description) and the mini_help (with
    # item name)
    def update_help
        @mini_help.contents.font.color = (($game_party.item_can_use?(item.id) || !item.is_a?(RPG::Item))? normal_color : disabled_color)
        @help_window.set_text((item == nil || movingItem? == true) ? "" : item.description)
        @mini_help.set_text(item == nil ? "" : item.name)
        @mini_help.visible = false if item == nil || movingItem?

        @mini_help.x = self.x + (self.cursor_rect.x + 16) - (@mini_help.width / 2) + (self.cursor_rect.width / 2)
        @mini_help.y = self.y + (self.cursor_rect.y + 16) + (self.cursor_rect.height)

        if !Grid_Variables::MINIHELP_CAN_BE_OUTSIDE_GRID
            @mini_help.x += (@mini_help.x - self.x - 16) * -1 if @mini_help.x < self.x + 16 # -16 to make it look good even if you hide the windowskin
            @mini_help.x -= (@mini_help.x + @mini_help.width) - (self.x + self.width - 16) if @mini_help.x + @mini_help.width >= self.x + self.width - 16
            @mini_help.y -= self.cursor_rect.height + @mini_help.height - 1 if @mini_help.y + @mini_help.height >= self.y + self.height - 16
        end
    end

    # Stores the item data on an array, and keeps them safe while moving the item.
    def get_item
        @item_saved = [$game_party.actors[@actor_index].item_grid[@y][@x][0],
            $game_party.actors[@actor_index].item_grid[@y][@x][1], @x, @y]
    end

    # Same thing as above, but with some added precautions to make sure it gets
    # the   right @x and @y. Used for the replace item method.
    def get_item2
        updateItemSizeFirstDraw(@item_saved[0], @item_saved[1])

        iH, iW = 0, 0
        if $game_party.actors[@actor_index].item_grid[@y][@x][0] == 0
            for iW in 0...@itemWidth.to_i
                for iH in 0...@itemHeight.to_i
                    if $game_party.actors[@actor_index].item_grid[@y + iH][@x + iW][0] != 0
                        break
                    end
                end
                break if $game_party.actors[@actor_index].item_grid[@y + iH][@x + iW][0] != 0
            end
        end

        if $game_party.actors[@actor_index].item_grid[@y + iH][@x + iW][1][0,1] == "["
            itemSplit = $game_party.actors[@actor_index].item_grid[@y + iH][@x + iW][1].gsub(/[\[\]]/, "").split('x')
            minusH = itemSplit[0].to_i
            minusW = itemSplit[1].to_i
        else
            minusH = 0
            minusW = 0
        end

        item_id = $game_party.actors[@actor_index].item_grid[@y + iH - minusH][@x + iW - minusW][0]
        type = $game_party.actors[@actor_index].item_grid[@y + iH - minusH][@x + iW - minusW][1]
        @item_saved2 = [item_id, type, @x + iW - minusW, @y + iH - minusH]
    end

    # Clears the @item_saved and transfers the data on @item_saved2 to it
    def transfer_get
        @item_saved = []
        @item_saved2.each{|i| @item_saved.push(i)}
    end

    # Redrawing used for moving items. Using @item_saved parameters if moving was
    # canceled (f = false)
    def redraw_item(f = true)
        if f
            x = 4 + (@x * 32)
            y = @y * 32
        else # the moving has been canceled
            x = 4 + (@item_saved[2] * 32)
            y = @item_saved[3] * 32
            tx = @x
            ty = @y
            @x = @item_saved[2]
            @y = @item_saved[3]
        end

        draw_item(@item_saved[0], @item_saved[1], @y, @x)
        for iH in 0...@itemHeight.to_i
            for iW in 0...@itemWidth.to_i
                if iH == 0 && iW == 0
                    $game_party.actors[@actor_index].item_grid[@y + iH][@x + iW][0] = @item_saved[0]
                    $game_party.actors[@actor_index].item_grid[@y + iH][@x + iW][1] = @item_saved[1]
                else
                    $game_party.actors[@actor_index].item_grid[@y + iH][@x + iW][0] = @item_saved[0]
                    $game_party.actors[@actor_index].item_grid[@y + iH][@x + iW][1] = "[#{iH}x#{iW}]"
                end
            end
        end

        # Making the cursor go to the replaced item
        if f == "replace"
            @x = @item_saved2[2]
            @y = @item_saved2[3]
        end

        # Uncomment these lines if you don't want the cursor to go back with the
        # item when the player cancels moving.
        #@x = tx if @x != tx and tx != nil
        #@y = ty if @y != ty and ty != nil
    end

    # Checks if the cursor area is empty, and if there is more than one item on it
    def empty?
        n = 0
        arr = []
        for iH in 0...@itemHeight.to_i
            for iW in 0...@itemWidth.to_i
                type = $game_party.actors[@actor_index].item_grid[@y + iH][@x + iW][1]
                id = $game_party.actors[@actor_index].item_grid[@y + iH][@x + iW][0]
                cond = (type == "")
                replaceable = true if !cond

                if !cond && (type == "i" || type == "w" || type == "a") && arr[n-1] != "#{@y + iH},#{@x + iW}"
                    n += 1
                    arr.push("#{@y + iH},#{@x + iW}")
                end
                if type[0,1] == "["
                    itemSplit = type.gsub(/[\[\]]/, "").split('x')
                    minusH = itemSplit[0].to_i
                    minusW = itemSplit[1].to_i

                    if arr[n-1] != "#{@y + iH - minusH},#{@x + iW - minusW}"
                        n += 1
                        arr.push("#{@y + iH - minusH},#{@x + iW - minusW}")
                    end
                end
                break if n >= 2
            end
            break if n >= 2
        end
        return "replace" if replaceable && n < 2
        return (n < 2 && !replaceable)
    end

    def set=(set)
        @x = set
        @y = set
        @mini_help.visible = (set == 0 ? true : false)
    end

    # Draws item graphics
    def draw_item(item_id, type, i , j)
        #~ if type == "i" and
        #~ $game_party.item_can_use?($data_items[item_id].id)
        opacity = 255
        #~ else
        #~ opacity = 128
        #~ end

        if item_id != 0
            x = 4 + (j * 32)
            y = i * 32
            itemWeaponArmor = item(type, item_id)

            case type
            when "i"
                color = Grid_Variables::COLOR_ITEMS
            when "w"
                color = Grid_Variables::COLOR_WEAPONS
            when "a"
                color = Grid_Variables::COLOR_ARMORS
            end

            if type != "" && type[0,1] != "["
                x = j * 32
                y = i * 32
                updateItemSizeFirstDraw(item_id, type)
                bitmap = RPG::Cache.icon(Grid_Variables::BIG_ICONS_PREFIX + itemWeaponArmor.icon_name)

                if Grid_Variables::USE_BIG_ICONS && (bitmap.width != 24 && bitmap.height != 24)
                    self.contents.blt(x, y, bitmap, Rect.new(0, 0, @itemWidth * 32, @itemHeight * 32), opacity)
                else
                    x += ((@itemWidth * 32) / 2) - 16
                    y += ((@itemHeight * 32) / 2) - 16
                    self.contents.blt(x + 4, y + 4, bitmap, Rect.new(0, 0, 48, 24), opacity)
                end

                @grid_color.bitmap.fill_rect(j*32+1, i*32+1, (@itemWidth * 32) - 1, (@itemHeight * 32) - 1, color)
            end
        end
    end
end

#==============================================================================
# This is Window_Target, edited to darken actors that can't equip the item.
# Since there is no way to change the normal color on Window_Base, I had to
# rewrite most draw functions here.
#==============================================================================
class Window_Target_Equip < Window_Selectable

    def initialize
        super(0, 0, 336, 480)
        self.contents = Bitmap.new(width - 32, height - 32)
        self.contents.font.name = $fontface
        self.contents.font.size = $fontsize
        self.z += 10
        @item_max = $game_party.actors.size
        @disabled_actor = []
        refresh
    end

    def refresh
        self.contents.clear
        for i in 0...$game_party.actors.size
            disabled = @disabled_actor[i]
            if disabled
                self.contents.font.color = disabled_color
            else
                self.contents.font.color = normal_color
            end

            x = 4
            y = i * 116
            actor = $game_party.actors[i]

            # actor name
            self.contents.draw_text(x, y, 120, 32, actor.name)

            # actor class
            self.contents.draw_text(x + 144, y, 236, 32, actor.class_name)

            # actor level
            self.contents.font.color = system_color if !disabled
            self.contents.draw_text(x + 8, y + 32, 32, 32, "Lv")
            self.contents.font.color = normal_color if !disabled
            self.contents.draw_text(x + 8 + 32, y + 32, 24, 32, actor.level.to_s, 2)

            # actor state
            text = make_battler_state_text(actor, width, true)
            self.contents.font.color = knockout_color if actor.hp == 0 && !disabled
            self.contents.draw_text(x + 8, y + 64, width, 32, text)
            self.contents.font.color = normal_color if actor.hp == 0 && !disabled

            # actor hp
            self.contents.font.color = system_color if !disabled
            self.contents.draw_text(x + 152, y + 32, 32, 32, $data_system.words.hp)
            # Checking if there is enough space for max HP
            if 144 - 32 >= 108
                hp_x = x + 152 + 144 - 108
                flag = true
            elsif 144 - 32 >= 48
                hp_x = x + 152 + 144 - 48
                flag = false
            end
            # Draw HP
            if !disabled
                if actor.hp == 0
                    self.contents.font.color = knockout_color
                elsif actor.hp <= actor.maxhp / 4
                    self.contents.font.color = crisis_color
                else
                    self.contents.font.color = normal_color
                end
            end
            self.contents.draw_text(hp_x, y + 32, 48, 32, actor.hp.to_s, 2)
            # Draw max HP
            if flag
                self.contents.font.color = normal_color if !disabled
                self.contents.draw_text(hp_x + 48, y + 32, 12, 32, "/", 1)
                self.contents.draw_text(hp_x + 60, y + 32, 48, 32, actor.maxhp.to_s)
            end

            # actor sp
            self.contents.font.color = system_color if !disabled
            self.contents.draw_text(x + 152, y + 64, 32, 32, $data_system.words.sp)
            # Check if there is enough space for max SP
            if 144 - 32 >= 108
                sp_x = x + 152+ 144 - 108
                flag = true
            elsif 144 - 32 >= 48
                sp_x = x + 152+ 144 - 48
                flag = false
            end
            # Draw SP
            if !disabled
                if actor.sp == 0
                    self.contents.font.color = knockout_color
                elsif actor.sp <= actor.maxsp / 4
                    self.contents.font.color = crisis_color
                else
                    self.contents.font.color = normal_color
                end
            end
            self.contents.draw_text(sp_x, y + 64, 48, 32, actor.sp.to_s, 2)
            # Draw max SP
            if flag
                self.contents.font.color = normal_color if !disabled
                self.contents.draw_text(sp_x + 48, y + 64, 12, 32, "/", 1)
                self.contents.draw_text(sp_x + 60, y + 64, 48, 32, actor.maxsp.to_s)
            end
        end
    end

    def update_cursor_rect
        # Se define a posição atual -1
        if @index < 0
            self.cursor_rect.set(0, 0, self.width - 32, @item_max * 116 - 20)
        else
            self.cursor_rect.set(0, @index * 116, self.width - 32, 96)
        end
    end

    def disable_actor(actor_id)
        @disabled_actor[actor_id] = true
    end

    def enable_actor(actor_id)
        @disabled_actor[actor_id] = false
    end

    def disabled?(id)
        return @disabled_actor[id]
    end
end

#==============================================================================
# The mini help window shows the item name below the selection cursor
#==============================================================================
class Mini_Help < Window_Base
    alias old_initialize initialize
    def initialize
        super(0, 0, 180, 43)
        self.contents = Bitmap.new(width - 32, height - 32)
        self.contents.font.size = 14
        self.back_opacity = 170
        self.z = 102
        self.visible = false
    end

    def set_text(text, align = 1)
        # If at least one part of text and alignment differ from last time
        if text != @text or align != @align
            # Redraw text
            self.contents.clear
            #self.contents.font.color = normal_color
            self.contents.draw_text(4, -12, self.width - 40, 32, text, align)
            #self.width = self.contents.text_size(text).width
            @text = text
            @align = align
            @actor = nil
        end
        self.visible = true
    end
end

#==============================================================================
# Changes the way the game handles item creation
#==============================================================================
class Game_Actor < Game_Battler
    attr_accessor :item_grid
    alias old_initialize initialize
    def initialize(actor_id)
        old_initialize(actor_id)
        @item_grid = Array.new(Grid_Variables::GRID_HEIGHT)
        for i in 0..@item_grid.size - 1
            @item_grid[i] = Array.new(Grid_Variables::GRID_WIDTH)
            for k in 0..@item_grid[i].size - 1
                @item_grid[i][k] = Array.new(2)
                @item_grid[i][k][0] = 0
                @item_grid[i][k][1] = ""
            end
        end
    end

    # This edit is to avoid losing the item if your inventory is already full.
    def equip(equip_type, id)
        case equip_type
        when 0  # Weapons
            if id == 0 or $game_party.weapon_number(id) > 0
                $game_party.lose_weapon(id, 1)
                if !$game_party.isGridFull?(@weapon_id, "w") || @weapon_id == 0
                    $game_party.gain_weapon(@weapon_id, 1)
                    @weapon_id = id
                else
                    $game_party.gain_weapon(id, 1)
                    $game_system.se_play($data_system.buzzer_se)
                    return nil
                end
            end
        when 1  # Shield
            if id == 0 or $game_party.armor_number(id) > 0
                $game_party.lose_armor(id, 1)
                if !$game_party.isGridFull?(@armor1_id, "a") || @armor1_id == 0
                    update_auto_state($data_armors[@armor1_id], $data_armors[id])
                    $game_party.gain_armor(@armor1_id, 1)
                    @armor1_id = id
                else
                    $game_party.gain_armor(id, 1)
                    return nil
                end
            end
        when 2  # Headgear
            if id == 0 or $game_party.armor_number(id) > 0
                $game_party.lose_armor(id, 1)
                if !$game_party.isGridFull?(@armor2_id, "a") || @armor2_id == 0
                    update_auto_state($data_armors[@armor2_id], $data_armors[id])
                    $game_party.gain_armor(@armor2_id, 1)
                    @armor2_id = id
                else
                    $game_party.gain_armor(id, 1)
                    return nil
                end
            end
        when 3  # Armor
            if id == 0 or $game_party.armor_number(id) > 0
                $game_party.lose_armor(id, 1)
                if !$game_party.isGridFull?(@armor3_id, "a") || @armor3_id == 0
                    update_auto_state($data_armors[@armor3_id], $data_armors[id])
                    $game_party.gain_armor(@armor3_id, 1)
                    @armor3_id = id
                else
                    $game_party.gain_armor(id, 1)
                    return nil
                end
            end
        when 4  # Accessory
            if id == 0 or $game_party.armor_number(id) > 0
                $game_party.lose_armor(id, 1)
                if !$game_party.isGridFull?(@armor4_id, "a") || @armor4_id == 0
                    update_auto_state($data_armors[@armor4_id], $data_armors[id])
                    $game_party.gain_armor(@armor4_id, 1)
                    @armor4_id = id
                else
                    $game_party.gain_armor(id, 1)
                    return nil
                end
            end
        end
    end

    # Same as above, but without deleting item. This one is used for the grid equip
    def grid_equip(equip_type, id)
        case equip_type
        when 0  # Armas
            if id == 0 or $game_party.weapon_number(id) > 0
                $game_party.gain_weapon(@weapon_id, 1)
                @weapon_id = id
            end
        when 1  # Escudo
            if id == 0 or $game_party.armor_number(id) > 0
                update_auto_state($data_armors[@armor1_id], $data_armors[id])
                $game_party.gain_armor(@armor1_id, 1)
                @armor1_id = id
            end
        when 2  # Elmo
            if id == 0 or $game_party.armor_number(id) > 0
                update_auto_state($data_armors[@armor2_id], $data_armors[id])
                $game_party.gain_armor(@armor2_id, 1)
                @armor2_id = id
            end
        when 3  # Armadura
            if id == 0 or $game_party.armor_number(id) > 0
                update_auto_state($data_armors[@armor3_id], $data_armors[id])
                $game_party.gain_armor(@armor3_id, 1)
                @armor3_id = id
            end
        when 4  # Acessório
            if id == 0 or $game_party.armor_number(id) > 0
                update_auto_state($data_armors[@armor4_id], $data_armors[id])
                $game_party.gain_armor(@armor4_id, 1)
                @armor4_id = id
            end
        end
    end
end

#==============================================================================
# Handles most of the grid inventory functions
#==============================================================================
class Game_Party
    # These have been edited for the Scene_Shop. If it returns something, that
    # means the grid is full and it couldn't add more items, so we use that number
    # to charge for the items bought

    def gain_item(item_id, n)
        if item_id > 0
            if n.abs == n # if the number is a positive value, add the items
                for k in 1..n
                    break if set_item(item_id, "i") == nil
                end
                return k unless k == n
            else # if the number is a negative value, remove the items
                lose_item(item_id, n.abs)
            end
        end
    end

    def gain_weapon(weapon_id, n)
        if weapon_id > 0
            if n.abs == n # if the number is a positive value, add the items
                for k in 1..n
                    break if set_item(weapon_id, "w") == nil
                end
                return k unless k == n
            else # if the number is a negative value, remove the items
                lose_weapon(weapon_id, n.abs)
            end
        end
    end

    def gain_armor(armor_id, n)
        if armor_id > 0
            if n.abs == n # if the number is a positive value, add the items
                for k in 1..n
                    break if set_item(armor_id, "a") == nil
                end
                return k unless k == n
            else # if the number is a negative value, remove the items
                lose_armor(armor_id, n.abs)
            end
        end
    end

    def lose_item(item_id, n)
        if item_id > 0
            for k in 1..n
                del_item(item_id, "i")
            end
        end
        @items[item_id] = [[item_number(item_id) + -n, 0].max, 99].min
    end

    def lose_weapon(weapon_id, n)
        if weapon_id > 0
            for k in 1..n
                del_item(weapon_id, "w")
            end
        end
        @weapons[weapon_id] = [[weapon_number(weapon_id) + -n, 0].max, 99].min
    end

    def lose_armor(armor_id, n)
        if armor_id > 0
            for k in 1..n
                del_item(armor_id, "a")
            end
        end
        @armors[armor_id] = [[armor_number(armor_id) + -n, 0].max, 99].min
    end

    # Mostly used for the delete_item method. This removes the item from the inventory.
    def eraseData(type, item_id, n)
        case type
        when "i"
            @items[item_id] = [[item_number(item_id) + -n, 0].max, 99].min
        when "w"
            @weapons[item_id] = [[weapon_number(item_id) + -n, 0].max, 99].min
        when "a"
            @armors[item_id] = [[armor_number(item_id) + -n, 0].max, 99].min
        end
    end

    # Update item properties
    def updateItemProp(type, item_id)
        case type
        when "i"
            name = $data_grid[0][item_id]
        when "w"
            name = $data_grid[1][item_id]
        when "a"
            name = $data_grid[2][item_id]
        else
            name = nil
        end

        if name != nil
            gridValues = name.split('x')
            @itemWidth = gridValues[0].to_i
            @itemHeight = gridValues[1].to_i
        end
    end

    # Checks if x and y are empty
    def isEmpty?(x, y)
        for iH in 0...@itemHeight.to_i
            for iW in 0...@itemWidth.to_i
                cond = (self.actors[0].item_grid[x + iH][y + iW][0] == 0)
                break if !cond
            end
            break if !cond
        end
        return cond
    end

    # Checking if there is enough space for the item on the grid
    def isGridFull?(item_id, type, item = false)
        if type == "" && item != false
            case item
            when RPG::Item
                type = "i"
            when RPG::Weapon
                type = "w"
            when RPG::Armor
                type = "a"
            end
        end

        if item == false
            updateItemProp(type, item_id)
        else
            case type
            when "i"
                name = $data_grid[0][item_id]
            when "w"
                name = $data_grid[1][item_id]
            when "a"
                name = $data_grid[2][item_id]
            else
                name = nil
            end

            if name != nil
                gridValues = name.split('x')
                @itemWidth = gridValues[0].to_i
                @itemHeight = gridValues[1].to_i
            end
        end


        for a in 0..self.actors[0].item_grid.size - 1
            for b in 0..self.actors[0].item_grid[a].size - 1
                if b < self.actors[0].item_grid[a].size - (@itemWidth.to_i - 1) and a < self.actors[0].item_grid.size - (@itemHeight.to_i - 1)
                    cond = isEmpty?(a, b)
                    break if cond
                end
            end
            break if cond
        end
        return !cond #!cond to make it return true if the grid is really full, just to avoid confusion with the method name
    end

    # Checking if the grid is full for multiple items
    def isGridFullMultipleItems?(arrayOfIds, types)
        # Just a little precaution, in case the user forgets the square brackets
        arrayOfIds = [arrayOfIds] if !arrayOfIds.kind_of?(Array)

        for i in 0..arrayOfIds.length - 1
            item_id = arrayOfIds[i]
            if types.length == 1
                type = types
            else
                type = types[i]
            end

            case type
            when "i"
                name = $data_grid[0][item_id]
            when "w"
                name = $data_grid[1][item_id]
            when "a"
                name = $data_grid[2][item_id]
            else
                name = nil
            end

            if name != nil
                gridValues = name.split('x')
                @itemWidth = gridValues[0].to_i
                @itemHeight = gridValues[1].to_i
            end

            for a in 0..self.actors[0].item_grid.size - 1
                for b in 0..self.actors[0].item_grid[a].size - 1
                    if b < self.actors[0].item_grid[a].size - (@itemWidth.to_i - 1) and a < self.actors[0].item_grid.size - (@itemHeight.to_i - 1)
                        cond = isEmpty?(a, b)
                        break if cond
                    end
                end
                break if cond
            end
            break if !cond
        end
        return !cond
    end

    # Adds the item values to the grid
    def set_item(item_id, type, returnPos = false)
        for a in 0..self.actors[0].item_grid.size - 1
            for b in 0..self.actors[0].item_grid[a].size - 1
                updateItemProp(type, item_id)
                iW = 0; iH = 0
                if b < self.actors[0].item_grid[a].size - (@itemWidth.to_i - 1) and a < self.actors[0].item_grid.size - (@itemHeight.to_i - 1)
                    if isEmpty?(a, b)
                        for iH in 0...@itemHeight.to_i
                            for iW in 0...@itemWidth.to_i
                                if iH == 0 && iW == 0
                                    self.actors[0].item_grid[a][b][0] = item_id
                                    self.actors[0].item_grid[a][b][1] = type
                                else
                                    self.actors[0].item_grid[a + iH][b + iW][0] = item_id
                                    self.actors[0].item_grid[a + iH][b + iW][1] = "[#{iH}x#{iW}]"
                                end
                            end
                        end
                        whatToReturn = ""
                        case type
                        when "i"
                            @items[item_id] = [[item_number(item_id) + 1, 0].max, 99].min
                        when "w"
                            @weapons[item_id] = [[weapon_number(item_id) + 1, 0].max, 99].min
                        when "a"
                            @armors[item_id] = [[armor_number(item_id) + 1, 0].max, 99].min
                        end
                        break
                    else
                        whatToReturn = nil
                    end
                end
            end
            break if whatToReturn != nil
        end

        return [a, b] if returnPos
        return whatToReturn
    end

    # Deletes the item values from the grid
    def del_item(item_id, type)
        updateItemProp(type, item_id)
        for a in 0..self.actors[0].item_grid.size - 1
            for b in 0..self.actors[0].item_grid[a].size - 1
                if self.actors[0].item_grid[a][b][0] == item_id and self.actors[0].item_grid[a][b][1] == type
                    for iH in 0...@itemHeight.to_i
                        for iW in 0...@itemWidth.to_i
                            self.actors[0].item_grid[a + iH][b + iW][0] = 0
                            self.actors[0].item_grid[a + iH][b + iW][1] = ""
                        end
                    end
                    return
                end
            end
        end
    end
end

#==============================================================================
# This is the cursor used when moving the item.
#==============================================================================
class Cursor_Icon < RPG::Sprite
    def initialize
        super
        @color = Color.new(255,255,0,50)
        @rect = Rect.new(0, 0, 24, 24)
    end

    def refresh(bitmap, iW, iH)
        if Grid_Variables::USE_BIG_ICONS
            x = 0
            y = 0
            @rect = Rect.new(0, 0, iW*32, iH*32)
        else
            x = 4 + ((iW * 32) / 2) - 16
            y = 4 + ((iH * 32) / 2) - 16
        end

        width = iW * 32
        height = iH * 32

        if self.bitmap == nil or (self.bitmap.width != width or self.bitmap.height != height)
            self.bitmap = Bitmap.new(width, height)
        else
            self.bitmap.clear
        end
        self.bitmap.fill_rect(0,0,width,height, @color)
        self.bitmap.blt(x, y, bitmap, @rect)
        self.z = 9999
    end
end