Phaser 2 确定哪个单元处于活动状态

问题描述

我有 3 个可点击的对象。当一个被点击时，这将成为“选定单位”。我正在尝试为单位创建一些通用操作，例如移动到一个点。

在我的创建函数中，我初始化了单位，当一个单位被点击时 - 这应该成为“选定单位”，以便我的移动和方向功能适用于这个单位。但是，脚本无法识别哪个单位打算，例如我收到此错误：

未捕获的类型错误：无法读取未定义的属性“速度”。

有没有办法使用变量来指示选定的用户并将其传递给函数？

@H_502_8@

window.onload = function() {
    
    var block_count   = 0;
    var block         = '';
    var selected_unit = '';
    var unit_clicked = 0;
    var tank1 = null;
    
    var game = new Phaser.Game(800,600,Phaser.AUTO,'',{ preload: preload,create: create,update: update,render: render});

    function preload () {
        game.load.image('block','block.png');
        game.load.image('tank1','tank.png');
        game.load.image('baddie','tank.png');
        game.load.image('mouse_btn','block.png');
        game.input.mouse.capture = true;
    }
            
    function create () {
        game.physics.startSystem(Phaser.Physics.ARCADE);
        
        mouse_btn = game.add.sprite(30,30,'mouse_btn');
        mouse_btn.anchor.setTo(0.5,0.5);
        
        
        //T1
        tank1 = game.add.sprite(30,'tank1');
        initialise_player(tank1);
        game.physics.enable(tank1,Phaser.Physics.ARCADE);
        
        //T2
        tank2 = game.add.sprite(30,60,'tank1');
        initialise_player(tank2);
        game.physics.enable(tank2,Phaser.Physics.ARCADE);
        
        game.world.setBounds(0,2000,2000);
        game.camera.follow(tank1);
    }


            
    function update () {
    
        if(selected_unit == '') {
            mouse_btn.x = game.input.mousePointer.worldX
            mouse_btn.y = game.input.mousePointer.worldY
        }           
        
        if(game.input.activePointer.leftButton.isDown && block_count == 0 && unit_clicked == 0) {
            game.input.activePointer.leftButton.stop(event);
            block_count =1;
            block = game.add.sprite(game.input.mousePointer.worldX,game.input.mousePointer.worldY,'block');
            game.physics.enable(block,Phaser.Physics.ARCADE);
            block.anchor.setTo(0.5,0.5)
            lookAtObject(selected_unit,block,0.005);
        }
        
        
        if(block.alive){
            game.physics.arcade.movetoObject(selected_unit,260,0)
        } else {
            console.log(selected_unit)
            selected_unit.body.veLocity.x = 0;
            selected_unit.body.veLocity.y = 0;
        }
        
        if(game.physics.arcade.collide(selected_unit,block)) {
            block_count--;
            block.kill();
        }
    }

    function render(){
        //console.log(game.physics.arcade.collide(tank1,block))
    }
    
    function lookAtObject(obj,target,rotspeed){
        var angle = Math.atan2(block.y - tank1.y,block.x - tank1.body.x);
        tank1.rotation = angle + game.math.degToRad(90);
    }

    function initialise_player(tank1){
      tank1.anchor.setTo(0.5,0.5);
      tank1.inputEnabled = true;
      tank1.input.useHandCursor = true;
      tank1.events.onInputDown.add(t1_clicked,this);
      tank1.events.onInputOver.add(t1_over,this)
      tank1.events.onInputOut.add(t1_out,this)
   }
    
  function t1_clicked() { 
    selected_unit = tank1;
}

function t1_over() { 
    unit_clicked = 1
}

function t1_out () { 
    unit_clicked = 0
}
    
};

解决方法

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