gistfile1.as

// render light circles
for (i = 0; i < lights.length; i ++)
{
	l = lights[i];
	
	var isSet:Object = new Object();
	
	for (j = 0; j < l.distance * 2; j++)
	{
		isSet[j] = new Object();
	}
	
	for (j = 0; j < 360; j += 1)
	{
		var depth:int = 1;
		var maxDepth:int = 1;
		
		for (k = 1; k < l.distance; k++)
		{
			// get the grid point
			var t_x:int = l.distance + k * Math.cos(j * Math.PI / 180);
			var t_y:int = l.distance + k * Math.sin(j * Math.PI / 180);
			
			if (isSet[t_x][t_y])
				continue;
				
			isSet[t_x][t_y] = true;
			
			t_x += l.x - l.distance;
			t_y += l.y - l.distance;
			
			if (t_x < 0 || t_x > Global.width || t_y < 0 || t_y > Global.height)
				continue;
			
			if (Global.terrain.getBlock(t_x, t_y) != Terrain.BLOCK_AIR)
				depth --;
			
			if (depth <= 0)
				break;
			
			var percent:int = k / l.distance;
			var strength:Number = strength * percent * (depth / maxDepth);

			map[t_x][t_y] = 0;
		}
	}