In Cocos2D in iPhone often you may be using spritesheets which amy cause memory leaks because they are unused textures in memory even when you go from one scene to other. So make sure to remove all those unwanted textures from memory to save memory. Copy this following code to dealloc function in your class… Read More »
To check whether your body is in rest or not you need to check whether the body->IsAwake() function returns true.IF yes then your body is at rest. Take a look at the following snippet.
Follow these steps…. Select your particle system from the Particle Designer . The go to file-> save as “file.plist” Copy file.plist to your resources folder. Copy the following code to your Xcode.
Everyone will be fascinated how flash games are built on the web that implements the real world physics. Well for your information there are a lot of physics engines available. One of them is the Box2D. Box2D was written in C++. Then it was converted to flash. So now I am going to show you… Read More »
Here mybody is a body to which I am connecting a pinpoint. The pin joint is between the world and the body. So it will appear as hanging in the wall if the gravity is downwards. ‘The ground’ is the other body to which the my_body is connected. First you create a big ground body… Read More »
You can iterate through all bodies in the world and check whether you have touched a particular body. You can get all the userdata from the current body The userdata contains the width, height, sprite etc. Just Log the userdata in the current body to see all these. for (b2Body* b = world->GetBodyList(); b; b… Read More »
Below code is a simplest way to do that.
You can check it by using the TestPoint function available for the Fixtures.
write the below code in “ccTouchesBegan” function and you are done. Here the ballBody represents the bullet body. You can increase the power variable to increase bullet speed.
The below code helps you to rotate a body in Box2D manually. Here the body is named “rotating_body” which is going to rotate and a sprite named “rot_sprite” is it’s userData, please give your own image for it. Make sure that you have it in your resources otherwise your program will crash. Note: call this… Read More »
CCBitmapFontAtlas faster than CCLabel. Labels that update fast at the expense of more memory usage, like any other CCSprite,is the specialty of the CCBitmapFontAtlas class //Usage… CCBitmapFontAtlas scoreLabel = [CCBitmapFontAtlas bitmapFontAtlasWithString:@”0″ fntFile:@”bitmapfont.fnt”];
Basic file operations Assumes the existence of a file called “testfile” in the current working directory #import #import #import #import #import int main (int argc, char *argv[]) { NSAutoreleasePool * pool = [[NSAutoreleasePool alloc] init]; NSString *fName = @”testfile”; NSFileManager *fm; NSDictionary *attr; // Need to create an instance of the file manager fm =… Read More »