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  • 限制移动速度

    processEvent:function (event) {
    
            if (this._bStop == true) return;
    
            if (this._state == STATE_PLAYING) {
                var delta = event.getDelta();
                var curPos = this._ship.getPosition();
                var pos = null;
                var limitSpeed = 15+MW.LEVEL;
                if (delta.x > limitSpeed) {
                    delta.x = limitSpeed;
                }
                else if (delta.x < -limitSpeed) {
                    delta.x = -limitSpeed;
                }
                if (delta.y > limitSpeed) {
                    delta.y = limitSpeed;
                }
    
                else if (delta.y < -limitSpeed) {
                    delta.y = -limitSpeed;
                }
                curPos = cc.pAdd(curPos, delta);
                // curPos = cc.pClamp(curPos, cc.POINT_ZERO, cc.p(winSize.width, winSize.height));
                pos = this.checkInScreen(this._ship, curPos, 0, 0);
                this._ship.setPosition(pos[0], pos[1]);

    ctor:function () {
            this._super();
    this.scheduleUpdate();
        },
        update:function (dt) {
            var realSpeed = dt * this.speed;
            var limitSpeed = 2+0.2*MW.LEVEL;
            if (realSpeed > limitSpeed) {
                realSpeed = limitSpeed;
            }
            // Keys are only enabled on the browser
            if (sys.platform == 'browser') {
                var pos = this.getPosition();
                if ((MW.KEYS[cc.KEY.w] || MW.KEYS[cc.KEY.up]) && pos.y <= winSize.height) {
                    pos.y += realSpeed;
                }
                if ((MW.KEYS[cc.KEY.s] || MW.KEYS[cc.KEY.down]) && pos.y >= 0) {
                    pos.y -= realSpeed;
                }
                if ((MW.KEYS[cc.KEY.a] || MW.KEYS[cc.KEY.left]) && pos.x >= 0) {
                    pos.x -= realSpeed;
                }
                if ((MW.KEYS[cc.KEY.d] || MW.KEYS[cc.KEY.right]) && pos.x <= winSize.width) {
                    pos.x += realSpeed;
                }
                this.setPosition(pos);
            }
        },
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  • 原文地址:https://www.cnblogs.com/linn/p/3493075.html
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