smasnoturnback-v1.2.lua

--smasnoturnback.lua (v1.2)
--By Spencer Everly
--This script provides a remake of the noTurnBack option, but with additional things like going left but not turning back right, and other things!

--This is also compatible with customCamera, and supports zooming and area stretching with it. You don't have to use customCamera to use this library, but just a reminder that it works with it.

local smasnoturnback = {}

local customCamera
pcall(function() customCamera = require("customCamera") end)
local autoscroll = require("autoscroll")

smasnoturnback.enabled = false --Enable this to activate everything here, make sure this is enabled BEFORE you set the turn back option!
smasnoturnback.overrideSection = false --Set to true to prevent the turn back on a certain area, useful for onLoadSection(number)
smasnoturnback.turnBack = "left" --Set to 'right' for a no right turn back, or 'up' for a no top turn back, or even 'down' for a no bottom turn back. Anything else accidentally set will be automatically set to 'left'.

function smasnoturnback.setSectionBounds(section, left, top, bottom, right)
    local sectionObj = Section(section)
    local bounds = sectionObj.boundary
    bounds.left = left
    bounds.top = top
    bounds.bottom = bottom
    bounds.right = right
    sectionObj.boundary = bounds
end

function smasnoturnback.onInitAPI()
    registerEvent(smasnoturnback,"onStart")
    registerEvent(smasnoturnback,"onCameraDraw")
    registerEvent(smasnoturnback,"onCameraUpdate")
    registerEvent(smasnoturnback,"onDraw")
    registerEvent(smasnoturnback,"onTick")
end

smasnoturnback.originalBoundariesTop = {}
smasnoturnback.originalBoundariesBottom = {}
smasnoturnback.originalBoundariesLeft = {}
smasnoturnback.originalBoundariesRight = {}

smasnoturnback.failsafeTable = {
    "left",
    "right",
    "up",
    "down",
}

function smasnoturnback.onStart()
    for i = 0,20 do
        table.insert(smasnoturnback.originalBoundariesTop, Section(i).origBoundary.top)
        table.insert(smasnoturnback.originalBoundariesBottom, Section(i).origBoundary.bottom)
        table.insert(smasnoturnback.originalBoundariesLeft, Section(i).origBoundary.left)
        table.insert(smasnoturnback.originalBoundariesRight, Section(i).origBoundary.right)
    end
end

function smasnoturnback.onCameraUpdate()
    if not SaveData.disableX2char then
        for k,v in ipairs(Section.getActiveIndices()) do
            if not autoscroll.isSectionScrolling(v) then
                if smasnoturnback.enabled and not smasnoturnback.overrideSection then
                    for itwo = 1,4 do
                        if smasnoturnback.turnBack ~= smasnoturnback.failsafeTable[itwo] then --Failsafe if the turnBack argument is anything else but the things in this script
                            smasnoturnback.turnBack = "left"
                        end
                    end
                    if smasnoturnback.turnBack == "left" then
                        if customCamera then
                            local fullX,fullY,fullWidth,fullHeight = customCamera.getFullCameraPos()
                            if fullX >= player.sectionObj.boundary.left then
                                local x1 = fullX
                                smasnoturnback.setSectionBounds(player.section, x1, player.sectionObj.boundary.top, player.sectionObj.boundary.bottom, player.sectionObj.boundary.right)
                            end
                        else
                            local fullX = camera.x
                            if camera.x >= player.sectionObj.boundary.left then
                                local x1 = fullX
                                smasnoturnback.setSectionBounds(player.section, x1, player.sectionObj.boundary.top, player.sectionObj.boundary.bottom, player.sectionObj.boundary.right)
                            end
                        end
                    elseif smasnoturnback.turnBack == "right" then
                        if customCamera then
                            local fullX,fullY,fullWidth,fullHeight = customCamera.getFullCameraPos()
                            if fullX <= player.sectionObj.boundary.right then
                                local x1 = fullX + 800
                                smasnoturnback.setSectionBounds(player.section, player.sectionObj.boundary.left, player.sectionObj.boundary.top, player.sectionObj.boundary.bottom, x1)
                            end
                        else
                            local fullX = camera.x
                            if camera.x <= player.sectionObj.boundary.right then
                                local x1 = fullX + 800
                                smasnoturnback.setSectionBounds(player.section, player.sectionObj.boundary.left, player.sectionObj.boundary.top, player.sectionObj.boundary.bottom, x1)
                            end
                        end
                    elseif smasnoturnback.turnBack == "up" then
                        if customCamera then
                            local fullX,fullY,fullWidth,fullHeight = customCamera.getFullCameraPos()
                            if fullY >= player.sectionObj.boundary.top then
                                local x1 = fullY
                                smasnoturnback.setSectionBounds(player.section, player.sectionObj.boundary.left, x1, player.sectionObj.boundary.bottom, player.sectionObj.boundary.right)
                            end
                        else
                            local fullY = camera.y
                            if camera.y >= player.sectionObj.boundary.top then
                                local x1 = fullY
                                smasnoturnback.setSectionBounds(player.section, player.sectionObj.boundary.left, x1, player.sectionObj.boundary.bottom, player.sectionObj.boundary.right)
                            end
                        end
                    elseif smasnoturnback.turnBack == "down" then
                        if customCamera then
                            local fullX,fullY,fullWidth,fullHeight = customCamera.getFullCameraPos()
                            if fullY <= player.sectionObj.boundary.bottom then
                                local x1 = fullY + 600
                                smasnoturnback.setSectionBounds(player.section, player.sectionObj.boundary.left, player.sectionObj.boundary.top, x1, player.sectionObj.boundary.right)
                            end
                        else
                            local fullY = camera.y
                            if camera.y <= player.sectionObj.boundary.bottom then
                                local x1 = fullY + 600
                                smasnoturnback.setSectionBounds(player.section, player.sectionObj.boundary.left, player.sectionObj.boundary.top, x1, player.sectionObj.boundary.right)
                            end
                        end
                    end
                end
            else
                smasnoturnback.enabled = false
                smasnoturnback.overrideSection = true
            end
        end
    end
end

local levelTablesWithNoTurnbacks = {
    "levelsGoHere.lvlx",
    "youCanPutAnything.lvlx",
    "inThisTable.lvlx",
    "thatCanHaveANoTurnBack.lvlx",
}

function smasnoturnback.onTick() --If you want a certain level or more, make a table with level filenames on it. A sample table is included above.

    --This is a sample table used for applying no-turn-backs on levels.
    if table.icontains(levelTablesWithNoTurnbacks,Level.filename()) and not smasnoturnback.overrideSection then
        smasnoturnback.enabled = true
    end



    if smasnoturnback.overrideSection then
        smasnoturnback.enabled = false
    end
end

function smasnoturnback.sectionsWithNoPlayers() --Returns sections with no players in them.
    local nonPlayeredSections = {}
    local playeredSections = Section.getActiveIndices()
    for i = 0,20 do
        if playeredSections[i] ~= i then
            table.insert(nonPlayeredSections, i)
        end
    end
    return nonPlayeredSections
end

function smasnoturnback.onDraw()
    for k,v in ipairs(smasnoturnback.sectionsWithNoPlayers()) do --When using the sections with no players code, revert any sections with no players in them to their original boundaries.
        if not autoscroll.isSectionScrolling(v) then
            if smasnoturnback.enabled and not smasnoturnback.overrideSection then
                for _,p in ipairs(Player.get()) do
                    if p.sectionObj.idx ~= v then
                        local sectionObj = Section(v)
                        local bounds = sectionObj.boundary
                        bounds.left = smasnoturnback.originalBoundariesLeft[v + 1]
                        bounds.top = smasnoturnback.originalBoundariesTop[v + 1]
                        bounds.bottom = smasnoturnback.originalBoundariesBottom[v + 1]
                        bounds.right = smasnoturnback.originalBoundariesRight[v + 1]
                        sectionObj.boundary = bounds
                    end
                end
            end
        end
    end
end

return smasnoturnback