问题描述
我想拖，并采用触摸它的精灵掉落身上。我不知道如何拖放精灵，但是当我试图移动身体吧...不工作，身体保持不动。当我触摸身体整个应用程序崩溃更重要的是，有时：X
谁能告诉我如何拖放物理机构，手指的运动过程中与其他机构的碰撞？我一直在寻找3天，IM德pressed：
I want to drag and drop body with its sprite using touch. I do know how to drag and drop sprite, but when I try to move body it... doesn't work, body stays still. What's more, sometimes when I touch body the whole app crashes :xCan anyone tell me how to drag and drop physic body that collides with other bodies during movement of finger? I've been searching for 3 days and im depressed :[
我创建了3类似机构。一个是动态的（球的弹跳模拟像曲棍球比赛），他们两个都是运动（将由玩家移动）。我会告诉你身体我想移动的声明。
我不知道是否需要任何code给你看，但我实施了非常糟糕的教程中发现了一些接口。 ：■
I've created 3 similar bodies. One is dynamic(simulation of ball bouncing like in Hockey Game), two of them are kinematic(Will be moveable by players). I will show you declaration of the body I want to move.I don't know if any code is needed to show you but I implemented some interfaces found in really bad tutorial. :s
public class MainActivity extends SimpleBaseGameActivity implements IOnSceneTouchListener, IOnAreaTouchListener
声明：
//Declaration:
final Sprite face = new Sprite(CAMERA_WIDTH/2+200f, centerY, this.mFaceTextureRegion, this.getVertexBufferObjectManager()) {
@Override
public boolean onAreaTouched(final TouchEvent pSceneTouchEvent, final float pTouchAreaLocalX, final float pTouchAreaLocalY) {
this.setPosition(pSceneTouchEvent.getX() - this.getWidth() / 2, pSceneTouchEvent.getY() - this.getHeight() / 2);
return true;
}
};
final FixtureDef MyFixtureDef = PhysicsFactory.createFixtureDef(0.2f,0.4f,0.6f);
this.scene.registerUpdateHandler(this.mPhysicsWorld);
face.setScale(3);
正文：
final Body facebody = PhysicsFactory.createCircleBody(
this.mPhysicsWorld, face, BodyType.KinematicBody,
CIRCLE_FIXTURE_DEF);
this.mPhysicsWorld.registerPhysicsConnector(new PhysicsConnector(face,
facebody, true, true));
facebody.setUserData("player1");
方法：
我试过MouseJoint
I tried MouseJoint
public MouseJoint createMouseJoint(IAreaShape face, float x, float y) {
final Body boxBody = this.mPhysicsWorld.getPhysicsConnectorManager()
.findBodyByShape(face);
Vector2 v = boxBody.getWorldPoint(new Vector2(x / 32, y / 32));
MouseJointDef mjd = new MouseJointDef();
// mjd.bodyA = ballbody;
mjd.bodyB = boxBody;
mjd.dampingRatio = 0.2f;
mjd.frequencyHz = 30;
mjd.maxForce = (float) (200.0f * boxBody.getMass());
mjd.collideConnected = true;
mjd.target.set(v);
return (MouseJoint) this.mPhysicsWorld.createJoint(mjd);
}
也onAreaTouched？
nor onAreaTouched?
@Override
public boolean onAreaTouched(final TouchEvent pSceneTouchEvent, final ITouchArea pTouchArea, final float pTouchAreaLocalX, final float pTouchAreaLocalY) {
if(pSceneTouchEvent.isActionDown()) {
final IAreaShape face = (IAreaShape) pTouchArea;
if(this.mMouseJointActive == null) {
//this.mEngine.vibrate(100);
this.mMouseJointActive = this.createMouseJoint(face, pTouchAreaLocalX, pTouchAreaLocalY);
}
return true;
}
return false;
}
在这里只是猜测
@Override
public boolean onSceneTouchEvent(Scene pScene, TouchEvent pSceneTouchEvent) {
// TODO Auto-generated method stub
if(pSceneTouchEvent.isActionDown()) {
Debug.d("here!");
return true;
}
return false;
}
}
有关类问题：
如果我宣布里面MainActivity类别播放器：
If I declare class player inside MainActivity:
class Player {
final Body facebody;
final Sprite face = new Sprite(MainActivity.CAMERA_WIDTH / 2+200f,240, MainActivity.mFaceTextureRegion ,getVertexBufferObjectManager()) {
@Override
public boolean onAreaTouched(final TouchEvent pSceneTouchEvent,
final float pTouchAreaLocalX, final float pTouchAreaLocalY) {
switch (pSceneTouchEvent.getAction()) {
case TouchEvent.ACTION_MOVE:
// Here 'body' refers to the Body object associated with
// this sprite
facebody.setTransform(pSceneTouchEvent.getX(),
pSceneTouchEvent.getY(), facebody.getAngle());
break;
default:
break;
}
return true;
}
};
Player(Body f) {
facebody = f;
}
}
一切都是完美的，但它是破口大骂 player.face 不能声明
OnCreateScene在此声明：
Everything is perfect but,it yells that player.face can't be declared inOnCreateScene in this declaration:
final Player player= new Player( PhysicsFactory.createCircleBody( this.mPhysicsWorld, player.face, BodyType.KinematicBody,CIRCLE_FIXTURE_DEF));
我该如何解决这个问题？
How shall I solve this?
推荐答案
OK终于让我找到很好的解决办法
把它带到onCreateScene：
ok finally I found good solutiontake it to onCreateScene:
final AnimatedSprite face;
final Body body;
final FixtureDef objectFixtureDef = PhysicsFactory.createFixtureDef(1, 0.5f, 0.5f);
face = new AnimatedSprite(CAMERA_WIDTH/2+200, CAMERA_HEIGHT/2, this.mCircleFaceTextureRegion, this.getVertexBufferObjectManager());
face.setScale(3);
body = PhysicsFactory.createCircleBody(this.mPhysicsWorld, face, BodyType.DynamicBody, objectFixtureDef);
this.mPhysicsWorld.registerPhysicsConnector(new PhysicsConnector(face, body, true, true));
face.animate(new long[]{200,200}, 0, 1, true);
face.setUserData(body);
body.setUserData("player");
this.mScene.registerTouchArea(face);
this.mScene.attachChild(face);
在AreaTouched：
on AreaTouched:
@Override
public boolean onAreaTouched( final TouchEvent pSceneTouchEvent, final ITouchArea pTouchArea,final float pTouchAreaLocalX, final float pTouchAreaLocalY) {
if(pSceneTouchEvent.isActionMove()) {
final AnimatedSprite face = (AnimatedSprite) pTouchArea;
final Body faceBody = (Body)face.getUserData();
faceBody.setTransform(pSceneTouchEvent.getX() / PhysicsConstants.PIXEL_TO_METER_RATIO_DEFAULT, pSceneTouchEvent.getY() / PhysicsConstants.PIXEL_TO_METER_RATIO_DEFAULT, faceBody.getAngle());
return true;
}
return false;
}
我没有级的球员，我把它onCreateScene。和拖放的重要组成部分，是 PhysicsConstants.PIXEL_TO_METER_RATIO_DEFAULT 来devide X和Y
I didn't make class player, I took it to onCreateScene. And important part of drag and drop is to devide X and Y by PhysicsConstants.PIXEL_TO_METER_RATIO_DEFAULT.
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