var jumpDown = cc.moveTo(this.jumpDuration,this.node.x,this.game.groundY).easing(cc.easeCubicActionIn());
this.node.x是变化的,但是下落时总是复位到0;
完整代码如下：
cc.Class({
extends: cc.Component,
properties: {
// 主角跳跃高度
jumpHeight: 0,
// 主角跳跃持续时间
jumpDuration: 0,
// 最大移动速度
maxMoveSpeed: 0,
// 加速度
accel: 0,
jumpAudio: {
default: null,
type: cc.AudioClip
},
// foo: {
// // ATTRIBUTES:
// default: null, // The default value will be used only when the component attaching
// // to a node for the first time
// type: cc.SpriteFrame, // optional, default is typeof default
// serializable: true, // optional, default is true
// },
// bar: {
// get () {
// return this._bar;
// },
// set (value) {
// this._bar = value;
// }
// },
},
setJumpAction: function () {
// 跳跃上升
var jumpUp = cc.moveBy(this.jumpDuration, cc.v2(0, this.jumpHeight)).easing(cc.easeCubicActionOut());
// 下落
//cc.log('this.game.groundY='+this.game.groundY);
//cc.p(this.node.x, this.game.groundY)
var jumpDown = cc.moveTo(this.jumpDuration,this.node.x,this.game.groundY).easing(cc.easeCubicActionIn());
// 添加一个回调函数，用于在动作结束时调用我们定义的其他方法
var callback = cc.callFunc(this.playJumpSound, this);
// 不断重复，而且每次完成落地动作后调用回调来播放声音
return cc.sequence(jumpUp, jumpDown,callback);
//return cc.repeatForever(cc.sequence(jumpUp, jumpDown,callback));
},
playJumpSound: function () {
// 调用声音引擎播放声音
cc.audioEngine.playEffect(this.jumpAudio, false);
},
onKeyDown (event) {
// set a flag when key pressed
switch(event.keyCode) {
case cc.macro.KEY.a:
// this.accLeft = true;
this.xSpeed=-300;
break;
case cc.macro.KEY.d:
// this.accRight = true;
this.xSpeed=300;
break;
case cc.macro.KEY.space:
cc.log('this.node.x='+this.node.x);
cc.log('this.node.getPosition()='+this.node.getPosition());
// xx=this.node.x;
this.node.runAction(this.jumpAction);
// cc.log('this.game.groundY='+this.game.groundY);
break;
case cc.macro.KEY.q:
this.node.runAction(this.jumpDown);
}
},
onKeyUp (event) {
// unset a flag when key released
switch(event.keyCode) {
case cc.macro.KEY.a:
//this.accLeft = false;
this.xSpeed=0;
break;
case cc.macro.KEY.d:
//this.accRight = false;
this.xSpeed=0;
break;
}
},
// LIFE-CYCLE CALLBACKS:
// onLoad () {},
// Player.js
onLoad: function () {
// 初始化跳跃动作
//var xx=0;
this.jumpAction = this.setJumpAction();
//this.node.runAction(this.jumpAction);
// 加速度方向开关
this.accLeft = false;
this.accRight = false;
// 主角当前水平方向速度
this.xSpeed = 0;
// 初始化键盘输入监听
cc.systemEvent.on(cc.SystemEvent.EventType.KEY_DOWN, this.onKeyDown, this);
cc.systemEvent.on(cc.SystemEvent.EventType.KEY_UP, this.onKeyUp, this);
},
onDestroy () {
// 取消键盘输入监听
cc.systemEvent.off(cc.SystemEvent.EventType.KEY_DOWN, this.onKeyDown, this);
cc.systemEvent.off(cc.SystemEvent.EventType.KEY_UP, this.onKeyUp, this);
},
start () {
},
// update (dt) {},
update: function (dt) {
// 根据当前加速度方向每帧更新速度
if (this.accLeft) {
this.xSpeed -= this.accel * dt;
} else if (this.accRight) {
this.xSpeed += this.accel * dt;
}
// 限制主角的速度不能超过最大值
if ( Math.abs(this.xSpeed) > this.maxMoveSpeed ) {
// if speed reach limit, use max speed with current direction
this.xSpeed = this.maxMoveSpeed * this.xSpeed / Math.abs(this.xSpeed);
}
// 根据当前速度更新主角的位置
this.node.x += this.xSpeed * dt;
},
});
