The update function for Inverse Universe will be similar to most other games where we update all the game elements and check for collisions. The code looks like this:
void GameWorld::update(float dt)
{
// don't process if player is dying
if(player_->is_dying_)
return;
// update each enemy
CCObject* object = NULL;
CCARRAY_FOREACH(enemies_, object)
{
Enemy* enemy = (Enemy*)object;
if(enemy)
{
enemy->Update(player_->getPosition(), player_->GetShield() == NULL);
}
}
// update each power-up
object = NULL;
CCARRAY_FOREACH(powerups_, object)
{
PowerUp* powerup = (PowerUp*)object;
if(powerup)
{
powerup->Update();
}
}
CheckCollisions();
CheckRemovals();
}We skip processing anything if the player's death animation is playing. We then iterate over the enemies_ and powerups_ arrays and update each object they contain. Finally, we check for collisions and for objects that must be removed. We will...