gui_terraform_helper.lua

-- configuration, value 0 must be first
local howMuchItems = { 0, 50, 100, 150, 200 }


function widget:GetInfo()
  return {
        name        = "zzz terraform helper",
        desc        = "build terraformed defenses",
        author      = "Svatopluk",
        date        = "7/20/2015",
        license     = "Hail Svatopluk 3x",
        layer       = 100,
        enabled   = true  --  loaded by default?
  }
end


local windows = {}
local Window
local ScrollPanel
local Chili
local lab
local scrollpanelContent

local function tableToStr(t)
    local res = "{ "
    for key,value in pairs(t) do
        local valStr = value
        if type(valStr) == "boolean" then
            if valStr == true then
                valStr = "true"
            else
                valStr = "false"
            end
        end
        --res = res .. type(value) .. "; "
        res = res .. key .. "=" .. valStr .. "; "
    end
    res = res .. " }"
    return res
end

local myLogFile
function openLogFile()
    -- myLogFile = io.open("gui_terraform_helper.log", "w")
end
function writeLog(msg)
    -- local currentTime = os.date("*t")
    -- myLogFile:write("" .. currentTime.hour  .. ":" .. currentTime.min  .. ":" .. currentTime.sec  .. ": ")
    -- myLogFile:write(msg .. "\n")
    -- myLogFile:flush()
end
function closeLogFile()
    -- myLogFile:close()
end

local currentTerraformSelectedIndex = 1
local currentTerraformSelectedValue = 0

function widget:Shutdown()
    writeLog("widget:Shutdown()")
    closeLogFile()
    for i=1,#windows do
        (windows[i]):Dispose()
    end
end

local function buttonHighlight(btn)
    btn.font.color = {1.0, 0.0, 0.0, 1.0} -- RGBA
    btn:Invalidate()
end
local function buttonNormal(btn)
    btn.font.color = {1.0, 1.0, 1.0, 1.0} -- RGBA
    btn:Invalidate()
end

function widget:Initialize()
    openLogFile()
    writeLog("widget:Initialize()")
    if (not WG.Chili) then
        widgetHandler:RemoveWidget()
        return
    end

    Chili = WG.Chili
    Window = Chili.Window
    ScrollPanel = Chili.ScrollPanel

    local screen0 = Chili.Screen0

    local buttons = {}
    for i = 1, #howMuchItems do
        local txt = "" .. howMuchItems[i]
        buttons[i] = Chili.Button:New{
            x = 5,
            y = 5+(i-1)*20,
            width = 150,
            height = 15,
            caption = txt,
            fontsize = 13,
            autosize = false,
            --textColor = {1.0, 0.0, 0.0, 1.0},
            anchors = {left=true,bottom=true,right=true},
            OnClick = { function()
                --buttons[i]:SetCaption("selected")
                writeLog("clicked " .. txt .. ", prev value = " .. buttons[currentTerraformSelectedIndex].caption)
                buttonNormal(buttons[currentTerraformSelectedIndex])
                currentTerraformSelectedIndex = i
                buttonHighlight(buttons[currentTerraformSelectedIndex])
                currentTerraformSelectedValue = 0 + txt
            end },
        }
        buttonNormal(buttons[i])
    end
    buttonHighlight(buttons[currentTerraformSelectedIndex])


    windowMain = Chili.Window:New{
        dockable = true,
        parent = screen0,
        caption = "Terraform",
        draggable = true,
        resizable = true,
        dragUseGrip = true,
        clientWidth = 200,
        clientHeight = 50,
        backgroundColor = {0.8,0.8,0.8,0.9},

        children =  buttons,
    }
    windows[#windows+1] = windowMain

end


local CMD_RAMP = 39734
local CMD_LEVEL = 39736
local CMD_RAISE = 39737
local CMD_SMOOTH = 39738
local CMD_RESTORE = 39739
local CMD_BUMPY = 39740
local CMD_TERRAFORM_INTERNAL = 39801

local function GetTerraParameters(terraType ,points, constructors, teamID, volumeSelection)
    local insParams = {}
    --insParams[1] = terraform_type -- 1 = level, 2 = raise, 3 = smooth, 4 = ramp, 5 = restore
    insParams[1] = terraType
    --insParams[2] = team -- teamID of the team doing the terraform
    insParams[2] = teamID
    --insParams[3] = loop -- true or false
    insParams[3] = 1 --need to be closed

    insParams[4] = points[1].y --height

    insParams[5] = #points -- how many points there are in the lasso (2 for ramp)
    insParams[6] = #constructors -- how many constructors are working on it

    --insParams[7] = volumeSelection -- 0 = none, 1 = only raise, 2 = only lower
    insParams[7] = volumeSelection


    local i = 8
    for j = 1, #points do
        insParams[i] = points[j].x
        insParams[i + 1] = points[j].z
        i = i + 2
    end

    --i = i + 2
    for j = 1, #constructors do
        insParams[i] = constructors[j]
        i = i + 1
    end

    return insParams
end

-- [21:26]  ivand bx1 is x, bz1 is z, bh1, bw1 are "xsize" and "zsize" normalized to unitheading (S/W/E/N)
-- [21:27]  ivand woff, hoff are mostly irrelevant and used only to cover buildings
-- [21:27]  ivand woff, hoff are mostly irrelevant and used only to cover buildings with terrawall
-- [21:27]  ivand so assume 0
-- [21:27]  ivand liftHeight is absolute (not relative) height if I recall it right
-- [21:28]  ivand notice "-1"'s in the code, this was the tricky part to figure out
function math.round(a)
    return math.floor(a+0.5)
end
local function GetTerraRectByParams(bx1, bz1, bw1, bh1, liftHeight, woff, hoff)
        local rect={
            {x=bx1-bw1-woff, y=math.round(liftHeight), z=bz1-bh1-hoff},
            {x=bx1-bw1-woff, y=math.round(liftHeight), z=bz1+bh1+hoff-1},
            {x=bx1+bw1+woff-1, y=math.round(liftHeight), z=bz1+bh1+hoff-1},
            {x=bx1+bw1+woff-1, y=math.round(liftHeight), z=bz1-bh1-hoff}
        }
        rect[5]=rect[1]

        return rect
end


local buildOrdersLater = {}

function widget:GameFrame(f)
    -- works, no need to log: writeLog("widget:GameFrame")
    local i = 1
    while i <=  #buildOrdersLater do
        local item = buildOrdersLater[i]
        local pos = item[1]
        local targetTerraform = item[2]
        -- Spring.GetGroundHeight( number x, number z ) -> number y
        local currentHeight = Spring.GetGroundHeight(pos.x, pos.z)
        -- writeLog("current height = " .. currentHeight .. ", expecting " .. targetTerraform)
        if targetTerraform == currentHeight then
            writeLog("giving command and removing")
            local orderParams = item[3]
            Spring.GiveOrderToUnitArray(orderParams[1], orderParams[2], orderParams[3], orderParams[4])
            table.remove(buildOrdersLater, i)
        else
            i = i + 1
        end
    end
    if #buildOrdersLater == 0 then
        --widgetHandler:RemoveWidgetCallIn("GameFrame", self)
        --writeLog("widget:GameFrame - removing myself")
    end
end

-- return: bool removeCmd
-- Called when a command is issued. Returning true deletes the command and does not send it through the network.
function widget:CommandNotify(cmdId, cmdParams, cmdOptions)
    if currentTerraformSelectedIndex > 1 then
        -- check if command issued is to make building (hardcoded acceptable - stardust, ddm)
        if cmdId < 0 then
            local unitDefId = -cmdId
            writeLog("notified about build command for unitDefId id " .. unitDefId)
            -- 37 = stardust
            -- 275 = ddm
            if unitDefId == 37 or unitDefId == 275 then
                -- TODO: if yes, insert terraform command before it
                writeLog("inserting terraform command")
                --writeLog("cmdParams = " .. tableToStr(cmdParams))
                --writeLog("cmdOptions = " .. tableToStr(cmdOptions))


                -- zero-k XZ map and Y height
                -- cmdParams = { X / horizontal map pos, Y / height of position, Z / map vertical pos }
                local commandPos = {}
                commandPos.x = cmdParams[1]
                commandPos.y = cmdParams[2]
                commandPos.z = cmdParams[3]

                local terraformHowMuch = 0 + currentTerraformSelectedValue

                -- hardcoded values, seems to work, grid width x height on map
                local unitWidth = 10
                local unitHeight = 10


                local rect = GetTerraRectByParams(commandPos.x, commandPos.z, unitWidth, unitHeight, commandPos.y + terraformHowMuch, 0, 0)

                local selectedUnits = Spring.GetSelectedUnits()
                local myTeamId = Spring.GetMyTeamID()
                local volumeSelection = 0
                local terraformParams = GetTerraParameters(1, rect, selectedUnits, myTeamId, volumeSelection)

                -- this works - replaces build command with terraform command
                -- Spring.GiveOrderToUnit(number unitID,   number cmdID,  params = {number, etc...},  options = {"alt", "ctrl", "shift", "right"}))
                Spring.GiveOrderToUnit(selectedUnits[1], CMD_TERRAFORM_INTERNAL, terraformParams, {"shift"})
                --Spring.GiveOrderToUnit(selectedUnits[1], cmdId, cmdParams, cmdOptions)
                buildOrdersLater[#buildOrdersLater+1] = { commandPos, rect[1].y, { selectedUnits, cmdId, cmdParams, cmdOptions } }
                --widgetHandler:UpdateWidgetCallIn("GameFrame", self)
                return true

                -- trying to insert .... DOESN'T WORK
                --options.ALT     -> treat param0 as a position instead of a tag
                --options.CONTROL -> use the build queue for factories
                --params[0] = command tag or position (negative numbers to reference
                --the back of the queue and 0 the first)
                --params[1] = insertCmd id
                --params[2] = insertCmd options (shift,alt,right click,etc.)
                --params[3 ... N+2] = insertCmd params[0 ... N-1]
                --local insertParams = {-1, CMD_TERRAFORM_INTERNAL, CMD.OPT_SHIFT }
                --for key,value in pairs(terraformParams) do
                --  insertParams[#insertParams+1] = value
                --end
                --Spring.GiveOrderToUnit(selectedUnits[1], CMD.INSERT, insertParams, {"alt"});
            end
        end
    end
    return false
end