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Fixed light culling

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This commit is contained in:
Felipe Alfonso 2018-01-30 22:27:11 -03:00
parent 0648161ca5
commit f294a17a79
1 changed files with 15 additions and 3 deletions
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18
src/gameobjects/LightsManager.js
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@ -32,6 +32,13 @@ var Light = new Class({
this.scrollFactorY = 1.0;
},
setScrollFactor: function (x, y)
{
this.scrollFactorX = x;
this.scrollFactorY = (y === undefined) ? x : y;
return this;
},
setColor: function (rgb)
{
var color = Utils.getFloatsFromUintRGB(rgb);
@ -90,7 +97,7 @@ var LightsManager = new Class({
disable: function ()
{
this.active = false;
return this;
},
@ -121,6 +128,9 @@ var LightsManager = new Class({
var cameraCenterX = camera.x + camera.width / 2.0;
var cameraCenterY = camera.y + camera.height / 2.0;
var cameraRadius = (camera.width + camera.height) / 2.0;
var point = { x: 0, y: 0 };
var cameraMatrix = camera.matrix;
var viewportHeight = this.systems.game.config.height;
culledLights.length = 0;
@ -129,10 +139,12 @@ var LightsManager = new Class({
{
var light = lights[index];
cameraMatrix.transformPoint(light.x, light.y, point);
// We'll just use bounding spheres to test
// if lights should be rendered
var dx = cameraCenterX - light.x;
var dy = cameraCenterY - light.y;
var dx = cameraCenterX - (point.x - (camera.scrollX * light.scrollFactorX * camera.zoom));
var dy = cameraCenterY - (viewportHeight - (point.y - (camera.scrollY * light.scrollFactorY) * camera.zoom));
var distance = Math.sqrt(dx * dx + dy * dy);
if (distance < light.radius + cameraRadius)