Initial commit

lib/impact/entity-pool.js

@@ -0,0 +1,60 @@
+ig.module(
+	'impact.entity-pool'
+)
+.requires(
+	'impact.game'
+)
+.defines(function(){ "use strict";
+
+ig.EntityPool = {
+	pools: {},
+		
+	mixin: { 
+		staticInstantiate: function( x, y, settings ) {
+			return ig.EntityPool.getFromPool( this.classId, x, y, settings );
+		},
+		
+		erase: function() {
+			ig.EntityPool.putInPool( this );
+		}
+	},
+	
+	enableFor: function( Class ) {
+		Class.inject(this.mixin);
+	},
+	
+	getFromPool: function( classId, x, y, settings ) {
+		var pool = this.pools[classId];
+		if( !pool || !pool.length ) { return null; }
+		
+		var instance = pool.pop();
+		instance.reset(x, y, settings);
+		return instance;
+	},
+	
+	putInPool: function( instance ) {
+		if( !this.pools[instance.classId] ) {
+			this.pools[instance.classId] = [instance];
+		}
+		else {
+			this.pools[instance.classId].push(instance);
+		}
+	},
+	
+	drainPool: function( classId ) {
+		delete this.pools[classId];
+	},
+	
+	drainAllPools: function() {
+		this.pools = {};
+	}
+};
+
+ig.Game.inject({
+	loadLevel: function( data ) {
+		ig.EntityPool.drainAllPools();
+		this.parent(data);
+	}
+});
+
+});