获取碰撞的总冲量值--chipmunk spacemanager cocos2d

发布于 2024-11-09 18:16:25 字数 637 浏览 0 评论 0原文

我正在使用 spacemanager，我想计算物体碰撞的力，以便我可以根据损坏情况调整声音和适当的精灵。谁能告诉我如何计算力。这是我在这个网站上得到的代码。

if(!cpArbiterIsFirstContact(arb)) return;

cpFloat 脉冲 = cpvlength(cpArbiterTotalImpulse(arb));

浮子体积 = MIN(脉冲/500.0f, 1.0f); NSLog(@"脉冲是:%f",音量);

NSLog(@" 脉冲 x:%fy:%f", cpArbiterTotalImpulse(arb).x , cpArbiterTotalImpulse(arb).y); if(体积>0.05f){ [SimpleSound playSoundWithVolume:音量]; 我在 POSTSOLVE 方法中有这个。

我也在 BEGIN 中尝试过它，它打印的所有内容都是 0。我浏览了这个网站，发现我需要这样做。 smgr.space->elasticIterations = smgr.space->iterations;

即使完成上述操作后，有时我会得到 1，有时它会显示“nan”。有什么我需要知道的基本知识吗？

谢谢

原文

i am using spacemanager and i want to calculate the force with which the objects collide so that i can adjust the sounds and appropirate spirtes depending on the damage. can some one tell me how to calculate the forces. here is the code i got on this site.

if(!cpArbiterIsFirstContact(arb)) return;

cpFloat impulse = cpvlength(cpArbiterTotalImpulse(arb));

float volume = MIN(impulse/500.0f, 1.0f);
NSLog(@"impulse is :%f",volume);

NSLog(@" impluse x:%f y:%f", cpArbiterTotalImpulse(arb).x , cpArbiterTotalImpulse(arb).y);
if(volume > 0.05f){
[SimpleSound playSoundWithVolume:volume];
}

i have this in my POSTSOLVE method.i tried it in BEGIN aswell and all it prints is 0. i went through this site and found that i needs to do this.
smgr.space->elasticIterations = smgr.space->iterations;

even after doing the above , sometimes i get 1 and some times it says "nan". is there something basic i need to know?

Thanks

分享到QQ

分享到微博