yichael_sandbagalgorithm/assets/Script/SnakeInput/SnakeKeyboardArrowkeyInput.js

var o0 = require('o0');
var o0CC = require('o0CC');


cc.Class({
    extends: require('SnakeDirectionInput'),
    properties: {
        keyDirection:null,
        key:null,
        speedingKey:0,
    },
    onLoad: function () {
        this._super();

        cc.systemEvent.on(cc.SystemEvent.EventType.KEY_DOWN, this.onKeyDown, this);
        cc.systemEvent.on(cc.SystemEvent.EventType.KEY_UP, this.onKeyUp, this);

        this.keyDirection = new Array();
        this.keyDirection[cc.macro.KEY.right] = new o0.Vector2(1,0);
        this.keyDirection[cc.macro.KEY.left] = new o0.Vector2(-1,0);
        this.keyDirection[cc.macro.KEY.up] = new o0.Vector2(0,1);
        this.keyDirection[cc.macro.KEY.down] = new o0.Vector2(0,-1);
        this.keyDirection[cc.macro.KEY.d] = new o0.Vector2(1,0);
        this.keyDirection[cc.macro.KEY.a] = new o0.Vector2(-1,0);
        this.keyDirection[cc.macro.KEY.w] = new o0.Vector2(0,1);
        this.keyDirection[cc.macro.KEY.s] = new o0.Vector2(0,-1);
        this.key = new Array();
        this.speedingKey = cc.macro.KEY.space;
    },
    onDestroy () {
        cc.systemEvent.off(cc.SystemEvent.EventType.KEY_DOWN, this.onKeyDown, this);
        cc.systemEvent.off(cc.SystemEvent.EventType.KEY_UP, this.onKeyUp, this);      
    },
    update: function (dt) {
        var targetVector = new o0.Vector2(0,0);
        for(var _key in this.keyDirection){
            if(this.key[_key] == true){
                targetVector = targetVector.plus(this.keyDirection[_key]);
            }
        }
        if(this.keyDirection.length != 0 && targetVector.length != 0){
            this.setTargetVector(targetVector.mod);
        }else{
            this.removeTargetVector();
        }
        
        this._super();
    },

    onKeyDown: function (event) {
        if(this.keyDirection[event.keyCode] != null){
            this.key[event.keyCode] = true;
        }
        if(event.keyCode == this.speedingKey){
            this.setTargetSpeeding(true);   
        }
    },
    onKeyUp: function (event) {
        if(this.keyDirection[event.keyCode] != null){
            this.key[event.keyCode] = false;
        }
        if(event.keyCode == this.speedingKey){
            this.setTargetSpeeding(false);  
        }
    }
});