Cocos Creator 隨筆（2）-- 不規則碰撞組件polygonCollider

監測鼠標點擊不規則區域

/**
 * 多邊形點擊響應區域
 */
private collider: cc.PolygonCollider; //不規則碰撞組件

let monitor = this.node.getChildByName("monitor"); //圖片
this.collider = monitor.getComponent(cc.PolygonCollider); //獲去碰撞組件
if (this.collider) {
     monitor.on(cc.Node.EventType.TOUCH_START, this.onAreaClick, this);
}
        
onAreaClick(event: any): void {
        let touchLoc = event.getLocation();
        let target = event.getCurrentTarget();
        let pos = target.convertToNodeSpaceAR(touchLoc);

        if (cc.Intersection.pointInPolygon(pos, this.collider.points)) {
            Debugger.Log("ok 在點擊區域內");
        } 
        else {
            Debugger.Log("抱歉 超出點擊區域");
        }
    }