做一个机构，它连续移动 [英] make a body which moves continuously

问题描述

我是箱-2D ＆放工作; AndEngine 。我有动感的车身可以说一个平面。我想用一个给定的速度连续移动这一点。所以，我设置了线速度吧。我有屏幕边界（地面，屋顶，左，放大器;右墙）为好。这些都是静态的身体。当我的面与边界碰撞一至两次，这成为停止。我申请没有重力飞机。为什么飞机停尽管它有固定的速度？
问题：
我该如何与移动的速度连续以及相应方向的飞机后发生冲突？从那以后，我想去的地方的用户触摸屏幕上移动？

I am working with Box-2d & AndEngine. I have dynamic body lets say a Plane. I want to moves this continuously with a given velocity. So, I set a linear Velocity to it. I have screen boundary(ground,roof,left & Right Wall) as well. Those are static body. When my plane collides with boundaries one or two times, it's becomes stopped. I apply no gravity to plane. Why plane stopped though it has fixed velocity? Problem: How I move the plane with continuous speed as well as corresponding direction after collide ? After that I want to move it where the user touches on the screen?

code ：创建平面

FixtureDef FIXTURE_DEF = PhysicsFactory
                .createFixtureDef(1, .5f, 0.5f);

        aPlane = new Plane(222, 333, pilotTexures, vbom) {
            @Override
            protected void onManagedUpdate(float pSecondsElapsed) {
                super.onManagedUpdate(pSecondsElapsed);
            }
        };
        planeBody = PhysicsFactory.createBoxBody(this.mPhysicsWorld, aPlane,
                BodyType.DynamicBody, FIXTURE_DEF);
        mPhysicsWorld.registerPhysicsConnector(new PhysicsConnector(
                aPlane, planeBody, true, true));
        planeBody.setLinearVelocity(DEMO_VELOCITY_X, DEMO_VELOCITY_Y);
        attachChild(aPlane);
        planeBody.setGravityScale(0);
        planeBody.setUserData(PLANE);

code ：建立界墙

final Rectangle ground = new Rectangle(0, camera_Height - 2,
        camera_Width, 2, vbom);
final Rectangle roof = new Rectangle(0, 0, camera_Width, 2, vbom);
final Rectangle left = new Rectangle(0, 0, 2, camera_Height, vbom);
final Rectangle right = new Rectangle(camera_Width - 2, 0, 2,
        camera_Height, vbom);

final FixtureDef wallFixtureDef = PhysicsFactory.createFixtureDef(0,
        0.5f, 0.5f);
PhysicsFactory.createBoxBody(this.mPhysicsWorld, ground,
        BodyType.StaticBody, wallFixtureDef);

Body roofBody = PhysicsFactory.createBoxBody(this.mPhysicsWorld, roof,
        BodyType.StaticBody, wallFixtureDef);
roofBody.setUserData(ROOF);

PhysicsFactory.createBoxBody(this.mPhysicsWorld, left,
        BodyType.StaticBody, wallFixtureDef);
PhysicsFactory.createBoxBody(this.mPhysicsWorld, right,
        BodyType.StaticBody, wallFixtureDef);

attachChild(ground);
attachChild(roof);
attachChild(left);
attachChild(right);

我也创建 ContactListener ，可当他们碰撞听。要移动手指触摸的点我也农具的 IOnSceneTouchListener

I also create ContactListener, can listen when they collide . To move on finger touched point I also implements IOnSceneTouchListener

感谢在前进。

推荐答案

你能尽你壁的弹性设置为1.0F，并定期删除联系人的摩擦，

Could you try setting the elasticity of your walls to 1.0f and for regular contact remove the friction,

final FixtureDef wallFixtureDef = PhysicsFactory.createFixtureDef(0,
    0.5f, 0.0f);

要

final FixtureDef wallFixtureDef = PhysicsFactory.createFixtureDef(0,
    1.0f, 0.0f);

合这有助于。

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