//this file manages the tilemap-related utilities
import standard;
import node;

var camX: float = 0;
var camY: float = 0;

//TODO: reference these from a global source (root?)
var tileWidth: int const = 64;
var tileHeight: int const = 64;

var roomWidth: int const = 10;
var roomHeight: int const = 10;

var levelXCount: int const = 9;
var levelYCount: int const = 9;

var screenWidth: int const = 1080;
var screenHeight: int const = 720;


//util to generate and init a child node of a given parent
fn makeChild(parent: opaque, fname: string) {
	var child: opaque = loadNode(fname);
	parent.pushNode(child);
	child.initNode();
	return child;
}

fn loadLayer(node: opaque, layerName: string) {
	//load the given layer as a child
	var layerNode = node.makeChild("scripts:/tilemap/" + layerName);
}

var stepCounter = 0;
fn onStep(node: opaque) {
	stepCounter++;

	camX--;
	camY--;
}

fn onDraw(node: opaque) {
	print stepCounter;
	stepCounter = 0;

	//iterate over each layer, passing in the screen dimensions
	for (var c = 0; c < node.getChildNodeCount(); c++) {
		node.getChildNode(c).callNodeFn("drawLayer", camX, camY, screenWidth, screenHeight, c * 4.0);
	}
}