Cocos2d for iPhone 1 Game Development Cookbook

Firing projectiles at moving targets

For AI actors to interact with their environment realistically, they must make calculations that human players make naturally. One common interaction involves firing a projectile at a moving target.

Getting ready

Please refer to the project RecipeCollection03 for full working code of this recipe.

How to do it...

Execute the following code:

@implementation Ch7_ProjectileAiming -(void) step: (ccTime) dt { [super step:dt]; /* CODE OMITTED */ //Firing projectiles fireCount += dt; if(fireCount > 1.0f){ fireCount = 0; [self fireMissiles]; } } /* Each enemy fires a missile object */ -(void) fireMissiles { for(int i=0; i<enemies.count; ...