修复demo 空格项目无法运行问题

demo/src/Scenes/NinjaAdventure/CameraBounds.ts

@@ -0,0 +1,37 @@
+module samples {
+    import Component = es.Component;
+    import Vector2 = es.Vector2;
+
+    export class CameraBounds extends Component {
+        public min: Vector2;
+        public max: Vector2;
+
+        constructor(min: Vector2 = Vector2.zero, max: Vector2 = Vector2.zero){
+            super();
+
+            this.min = min;
+            this.max = max;
+            this.setUpdateOrder(Number.MAX_VALUE);
+        }
+
+        public onAddedToEntity(): void {
+            this.entity.updateOrder = Number.MAX_VALUE;
+        }
+
+        public update(): void {
+            let cameraBounds = this.entity.scene.camera.bounds;
+
+            if (cameraBounds.top < this.min.y)
+                this.entity.scene.camera.position.add(new Vector2(0, this.min.y - cameraBounds.top));
+
+            if (cameraBounds.left < this.min.x)
+                this.entity.scene.camera.position.add(new Vector2(this.min.x - cameraBounds.left, 0));
+
+            if (cameraBounds.bottom > this.max.y)
+                this.entity.scene.camera.position.add(new Vector2(0, this.max.y - cameraBounds.bottom));
+
+            if (cameraBounds.right > this.max.x)
+                this.entity.scene.camera.position.add(new Vector2(this.max.x - cameraBounds.right, 0));
+        }
+    }
+}