Spring RTS Engine

Code: Select all

local mX, mY, mBtnL, mBtnM, mBtnR = Spring.GetMouseState ()
local cPos = GetMouseWorldCoors (mX, mY)
local x, y, z, h = cPos [1], cPos [2], cPos [3], cmd.params [4]
gl.BeginEnd (GL.LINE_STRIP, DrawOutline,-cmd.id, x, y, z, h)

x, y, z = Spring.Pos2BuildPos (-cmd.id, x, y, z)
gl.DepthTest (true)
gl.PushMatrix ()
gl.Translate (x, y, z)
gl.Rotate (degrees, 0, 1.0, 0)
gl.UnitShape (-cmd.id, Spring.GetMyPlayerID ())

function DrawOutline (cmd, x, y, z, h)
local ud = UnitDefs [cmd]
local baseX = ud.xsize * 4 - ud.buildingDecalSizeX
local baseZ = ud.zsize * 4 - ud.buildingDecalSizeY
if (h == 1 or h == 3) then
baseX, baseZ = baseZ, baseX
end
gl.Vertex (x-baseX, y, z-baseZ)
gl.Vertex (x-baseX, y, z + baseZ)
gl.Vertex (x + baseX, y, z + baseZ)
gl.Vertex (x + baseX, y, z-baseZ)
gl.Vertex (x-baseX, y, z-baseZ)
end

Code: Select all

function Pos2BuildPos(DefID, x, y, z, h)
	--	Grid step	
	local Step = 16

	--	1/2 size of Building
	local ud = UnitDefs[DefID]
	local baseX = ud.xsize * 4
	local baseZ = ud.zsize * 4

	if (h == 1 or h==3) then
		baseX,baseZ = baseZ,baseX
	end

	local rx = math.floor(( x - baseX + 8 ) / Step ) * Step + baseX
	local rz = math.floor(( z - baseZ + 8 ) / Step ) * Step + baseZ

	return rx, Spring.GetGroundHeight(rx, rz), rz
end