Question

So, i have a basic game scenerario:

Some unit moves close to an enemy unit, shoots projectile and then enemy unit’s life is adjusted. My problem is that I am not sure how to schedule these three events to run one after another. If all these actions were done on the same target, then this would be super easy, but there are two different targets.

What would be best approach to do this?

Code looks like this:

Unit* unit = [self getActiveUnit];
Unit* enemy = [self getEnemyInRange:unit];

CGpoint A = unit.sprite.position;
CGPoint B = [self getPositionClose:enemy for:unit];

CCSequence* unitMove = [self generateUnitMoveFrom:A to:B];

Projectile* proj = [self generateProjectile];
CCSequence* projMove = [self generateProjMoveFrom:A to:B];

CCSequence* attackDone = [self generateAttackDoneFor:unit enemy:enemy];

// This is the part that i don't know how to do
// Execute these in order and sequentially, not at the same time
[unit.sprite runAction:unitMove];
[proj.sprite runAction:projMove];
[proj.sprite runAction:removeSprite];
[self runAction:attackDone];

What is the best approach to do this? Even using CCActionManager it still seems fairly complicated because i think i would have to add an extra call back between all these actions to resume scheduled actions for the next target.

Any ideas?

Thanks!

Answer 1

I would attempt to use CCSequence

[self runAction:[CCSequence actions:
  [CCCallFuncO actionWithTarget:unit.sprite selector:@selector(runAction:) object:unitMove],
  [CCCallFuncO actionWithTarget:proj.sprite selector:@selector(runAction:) object:projMove],
  [CCCallFuncO actionWithTarget:proj.sprite selector:@selector(runAction:) object:removeSprite],
  [CCCallFunc actionWithTarget:self selector:@selector(attackDone)],
                     nil]];