Question

我创建了矩形

var options = { 
    isStatic: true,
    angle: Math.PI * 0.15
}
elastic = Bodies.rectangle(300, 245, 75, 75, options),

将此添加到场景

World.add(_world, [elastic]);

我想在onClick上更改此obj选项。

   Events.on(_engine, 'tick', function(event) {
        if(_mouseConstraint.mouse.button == 0){
                var options2 = { 
                    isStatic: false,
                    angle: Math.PI * 0.35,
                    friction: 0.0001
                elastic2 = Bodies.rectangle(300, 245, 75, 75, options2);
                World.add(_engine.world, elastic2);
            }
        }
    });

这就是我的尝试，如何在不使用新选项创建new的情况下在对象上设置新属性？

Answer 1

解决方案我的对象跳转：）

var rect = Bodies.rectangle(300, 300, 40, 40, {id: "jumper", isStatic: false, friction: 0.001 });
    World.add(_world, rect);
    var jumper = Composite.get(_world, "jumper", "body");
    _sceneEvents.push(

        Events.on(_engine, 'mousedown', function(event) {
            var mousePosition = event.mouse.position;
            jumper.force = {
                x: 0.001,
                y: -0.01
            };

            console.log('mousedown at ' + mousePosition.x + ' ' + mousePosition.y);
        })

    );

Matter.js在onClick上更改对象属性

1 个答案: