Cocos2d is a popular 2d framework for developing iphone games, including physics and particle support. Here’s a quick introduction to getting cocos2d for the iphone up and running for your next project.
Download the latest source from:
http://code.google.com/p/cocos2d-iphone/downloads/list
I recommend you stick with the stable releases, unless there is a specific feature your require from a new version.
Unzip the folder and the template installation script:
$ ./install_template.sh
This will make a series of cocos-2d templates available from XCode. Launch/restart xcode and choose File->New Project->cocos2d Application build and run the new application in the simulator and it should look something like this:
Were going to build on this template to add a main menu
First download the test image and add it to the new xcode project (Make sure it is copied into the application directory)
Create a new class name MenuScene and add the following code to the header file:
#import #import "cocos2d.h" @interface MenuScene : Scene { } @end @interface MenuLayer : Layer { } -(void)startGame: (id)sender; -(void)help: (id)sender; @end
The add the following to the .m file:
#import "MenuScene" @implementation MenuScene - (id) init { self = [super init]; if (self != nil) { Sprite * bg = [Sprite spriteWithFile:@"MainMenuBackground.png"]; [bg setPosition:ccp(160, 240)]; [self addChild:bg z:0]; [self addChild:[MenuLayer node] z:1]; } return self; } @end @implementation MenuLayer - (id) init { self = [super init]; if (self != nil) { [MenuItemFont setFontSize:24]; [MenuItemFont setFontName:@"Helvetica"]; MenuItem *start = [MenuItemFont itemFromString:@"Start Game" target:self selector:@selector(startGame:)]; MenuItem *help = [MenuItemFont itemFromString:@"Help" target:self selector:@selector(help:)]; Menu *menu = [Menu menuWithItems:start, help, nil]; menu.color = ccc3(0, 0, 0); [menu alignItemsVertically]; [self addChild:menu]; } return self; } -(void)startGame: (id)sender { NSLog(@"start game"); } -(void)help: (id)sender { NSLog(@"help"); } @end
Finally modify the app delegate (CocosTestAppDelegate.m) to include MenuScene.h
#import "MainMenuScene.h"and replace the line:
[[Director sharedDirector] runWithScene: [HelloWorld scene]];
with:
[[Director sharedDirector] runWithScene: [MenuScene node]];
also remove the line:
[[Director sharedDirector] setDeviceOrientation:CCDeviceOrientationLandscapeLeft];
Compile and run the project and you should end up with a menu and two clickable buttons:
