cocos2d running sequences in order on different targets - objective-c

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]];

Answer 2

You may need this code for running Multiple CCAction ( each action for a different CCNode/CCSprite/... ) ; But starting All in sequence !
CCMoveBy *moveUpAction = CCMoveBy::create(0.5,ccp(0,400));
CCMoveBy *moveRightAction = CCMoveBy::create(1,ccp(300,0));
CCMoveBy *moveDownAction = CCMoveBy::create(1,ccp(0,-400));
CCTargetedAction *mm = CCTargetedAction::create(someNode_1,moveUpAction);
CCTargetedAction *rr = CCTargetedAction::create(someNode_2,moveRightAction);
CCTargetedAction *dd = CCTargetedAction::create(someNode_3,moveDownAction);
// Here we first run 'moveUpAction' on someNode_1.
// After finishing that Action we start 'moveRightAction' on someNode_2
// After finishing the Action, we start ...
CCSequence *targetedSeq = CCSequence::create(mm,rr,dd,NULL);
whateverNode->runAction(targetedSeq );

Answer 3

Agreed with James. Plus you could add in a delay if there was some action you wanted to give a little more time to before the others are run...
[CCDelayTime actionWithDuration:0.5 ];

Answer 4

you can create an array of your actions, then scedule some method to call them one by one. For example
- (void) playManyActionsOneByOne
{
// create some actions and add them to the
// mutable array m_actionsContainer
[self runNextActionInArray];
}
- (void) runNexActionInArray
{
if( [m_actionsContainer count > 0] )
{
id nextAction = [m_actionsContainer objectAtIndex:0];
id callback = [CCCallFunc actionWithTarget: self selector: #selector(runNextActionInArray)];
id sequence = [CCSequence actionOne: nextActon two: callback];
[neededNode runAction: sequence];
[m_actionsContainer removeObjectAtIndex:0];
}
}
it will run actions one by one and you even can add actions to your array while other actions aren't done yet.