精灵及其身体对力的作用方式不同

发布于 2025-01-01 21:42:36 字数 726 浏览 0 评论 0原文

所以我创建了一个身体并用精灵填充它。问题是，如果我对主体施加力，精灵就会高于主体（我可以从 debug_draw 中看到）。知道为什么会发生这种情况吗？

更新

- (void)tick:(ccTime) dt {

    _world->Step(dt, 10, 10);

    for(b2Body *b = _world->GetBodyList(); b; b=b->GetNext()) {    
        if (b->GetUserData() != NULL) {
            CCSprite *playerData = (CCSprite *)b->GetUserData();
            playerData.position = ccp(b->GetPosition().x * PTM_RATIO,
                                    b->GetPosition().y * PTM_RATIO);
            playerData.rotation = -1 * CC_RADIANS_TO_DEGREES(b->GetAngle());
        }        
    }

}

以下是我在 init 方法中的调用方式：

[self schedule:@selector(tick:)];

原文

So I created a body and filled it with a sprite. The problem is that if I apply a force on the body, the sprite goes higher than the body (which I can see from debug_draw). Any idea why this is happening?

UPDATE

- (void)tick:(ccTime) dt {

    _world->Step(dt, 10, 10);

    for(b2Body *b = _world->GetBodyList(); b; b=b->GetNext()) {    
        if (b->GetUserData() != NULL) {
            CCSprite *playerData = (CCSprite *)b->GetUserData();
            playerData.position = ccp(b->GetPosition().x * PTM_RATIO,
                                    b->GetPosition().y * PTM_RATIO);
            playerData.rotation = -1 * CC_RADIANS_TO_DEGREES(b->GetAngle());
        }        
    }

}

And here's how I call this in my init method:

[self schedule:@selector(tick:)];

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_失温 2025-01-08 21:42:36

获取 User_Data 的 for 循环时不时地重复，因此更新生物的位置会很困难..请在 tick 方法中移动精灵位置....

-(void) moveCreature
{
    // Please use the position to set the directions. This is used to fall from upside down in Portrait mode
    [spriteCreature setPosition:ccp(spriteCreature.position.x,spriteCreature.position.y-5)];

}

现在在 init 方法中安排精灵

-(id) init
{
    if((self = [super init])) 
    {
        // Create your World and other stuffs 
        [self schedule:@selector(moveCreature)];

    }
return self;
}

上面东西会带着精灵进入体内然后掉下来......

The for loop which gets the User_Data is kept on repeating now and then so to update the position of the creature would be difficult.. Please move the sprites position in the tick method....

-(void) moveCreature
{
    // Please use the position to set the directions. This is used to fall from upside down in Portrait mode
    [spriteCreature setPosition:ccp(spriteCreature.position.x,spriteCreature.position.y-5)];

}

Now in the init method schedule the sprite

-(id) init
{
    if((self = [super init])) 
    {
        // Create your World and other stuffs 
        [self schedule:@selector(moveCreature)];

    }
return self;
}

The above stuff would carry the sprite in the body n fall down...

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