box2d

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change image angle by touch in cocos2d

i am using cocos2d box2d in xcode, and i have 2 simple related issues that i am not sure about them. -first and easy, whats the best way to change a sprite angle according to touch?[详细]

2023-03-18 19:57 分类：问答
Box2d - Dynamic Sensors?

开发者_开发问答so I have this dynamic body, that I just want to know when an object collides with it, but even if this object collides with it, the dynamic body will always move at the same time and w[详细]

2023-03-18 12:13 分类：问答
How to get a fixture's Shape's points from a Body* in box2D?

Hey i\'m trying to integrate Box2D and SFML, and my class takes in a Body pointer, which i need to use to get all the points of a fixture so i can form a gr开发者_开发问答aphical representation of the[详细]

2023-03-18 08:19 分类：问答
Farseer span between objects

There is situation: object \"A\" falls down on static object \"B\", but when \"A\" lands on \"B\" there is spa开发者_Python百科n between \"A\" and \"B\". How to solve the issues?Box2d is using iterati[详细]

2023-03-18 06:17 分类：问答
How to destroy a b2Body in Box2D (cocos2d)? After checking the traveld distance

I have bullets in box2d/cocos2d-for-iphone. They are flying fine...but I want to destroy these bullets after they traveld a certain distance. for example after a bullet \"flew\" 480px it should be rem[详细]

2023-03-18 04:04 分类：问答
How to know which body collide?

i am using cocos2d and box2d, with contact listener, and lets say i have a body that can hit a number of other bodies, BUT each one of them is turn on the contact listener.[详细]

2023-03-17 17:23 分类：问答
sound is freezing the cocos2d/box2d scene

my contact listener should play a sound when it feels hit, but if i开发者_运维知识库 put this line on the detection part of the listener in my tick method like this:[详细]

2023-03-17 14:52 分类：问答
Help with design issue

Here is my problem. I\'m using a physics library called Box2D. I\'m able to hook up a listener that will tell me when 2 fixtures collide.[详细]

2023-03-17 11:40 分类：问答
applying gravity of zero to only one sprite in the world

i have a world in cocos2d with box2d, that has a gravity. now in order to add a body for each sprite, i am calling a function and send her the sprite.[详细]

2023-03-17 08:13 分类：问答
what physical properties for balls should be set?

following physical properties of the balls is being used: golfball // Create circle shape b2Circl开发者_如何学运维eShape circle;[详细]

2023-03-17 07:25 分类：问答