Spring RTS Engine

Code: Select all

function gadget:GetInfo()
    return {
        name = "River Freeze and break",
        desc = " freezes all water (teraforms it up) and breaks it on bullet impact",
        author = "Picasso",
        date = "3rd of May 2010",
        license = "GPL3",
        layer = 3,
        version = 1,
        enabled = true
    }
end

if (gadgetHandler:IsSyncedCode()) then
    local resolutionStep= 10
    local iceCrackTresholdDamage = 999 
    local terrainDamageMap = makeTable(0, Game.mapSizeX/resolutionStep, Game.mapSizeZ/resolutionStep)
    local spGetUnitPosition = Spring.GetUnitPosition

    -- > Creates a Table and initializes it with default value
    function makeTable(default, xDimension, yDimension, zDimension,
                       boolNegativeMirror)
        boolNegativeMirror = boolNegativeMirror or false

        xStartIndex = 1
        yStartIndex = 1
        zStartIndex = 1

        if boolNegativeMirror == true then
            xStartIndex = -xDimension
            yStartIndex = -yDimension
            zStartIndex = -zDimension
        end

        local RetTable = {}
        if not xDimension then return default end

        for x = xStartIndex, xDimension, 1 do
            if yDimension then
                RetTable[x] = {}
            elseif xDimension then
                RetTable[x] = default
            else
                return default
            end

            if yDimension then
                for y = yStartIndex, yDimension, 1 do
                    if zDimension then
                        RetTable[x][y] = {}
                    else
                        RetTable[x][y] = default
                    end

                    if zDimension then
                        for z = zStartIndex, zDimension, 1 do
                            RetTable[x][y][z] = default
                        end
                    end
                end
            end
        end
        return RetTable
    end

    function transformToMapCoord(x,z)
        return math.ceil(x/resolutionStep), math.ceil(z/resolutionStep)
    end

    function gadget:GameFrame(frame)
        callDistributedTerraformer(frame)
    end

    function callDistributedTerraformer(frame)
        x = (frame % #terrainDamageMap) + 1
        for i=1, #terrainDamageMap[frame] do
            --we only care about water
            if  Spring.GetGroundOrigHeight (  x*resolutionStep,  z* resolutionStep ) < 0 then
                if terrainDamageMap[x][z] > 0 and terrainDamageMap[x] >  iceCrackTresholdDamage + math.random(50, 500) and then
                    --Terraformcode down - the water kills the unit
                    terrainDamageMap[x][z] = 0
                else
                    --terraform slowly up (freeze) 
                end
            end
        end
    end

    function gadget:Explosion(weaponDefID, x, y, z, AttackerID)
         mx,mz = transformToMapCoord(x,z)
         terrainDamageMap[mx][mz] =terrainDamageMap[mx][mz] + WeaponDefs[weaponDefID].damage
    end

    function gadget:UnitDestroyed(unitID, unitDefID, teamID, attackerID)
        x,y,z= spGetUnitPosition(unitID)
        mx,mz = transformToMapCoord(x,z)
        _,maxHp = Spring.GetUnitHealth(unitID)
        terrainDamageMap[mx][mz] =terrainDamageMap[mx][mz] + maxHp
    end

    function gadget:Initialize()  
        terrainDamageMap = makeTable(0, Game.mapSizeX/resolutionStep, Game.mapSizeZ/resolutionStep)   
    end

end