mmmmmm, now I understand what you told me before. Accuracy is still a problem in some cases but I guess its a great suggestion. I will implement them as soon as I can work on the project again. I will post the results later.

I will joing the 3 methods, EGon, Pauls and creating Threads for moving the bullets, but instead of doing on thread for each  bullet I will create 3 Threads for that and distribute the amount of living bullets into those 3 Threads.

mmm, do you mean having a relation between the whole bullets moving time and the movement distance for each bullet? Then when they are few bullets I will need to move then and lower speeds to have the same behavior than moving faster when they take a larger time to move all the bullets???

The problem on that is the precision and collision detection, doing the bullets jumping large distances will make them look bad on the game and will avoid doing a correct collision detection. I am talking about 350 ms for moving 40 bullets, so I guess that a normal game may have more that a hundred alive bullets on the fly, so having 1 sec for moving all the bullets will make that bullets moves at huge speeds. Anyway I will try it to see is it helps.

Hi, I checked JBars but it uses a servlet to generate the label and then just send it. Is not what I needed. I already checked the mail, and thanks a lot for that piece of code, I will use it later becausse the project is delayed by the customer so the emergency passed.

I was reading but had no luck finding a good doc.  Now I downloaded a code 39 font and I am trying to get the images for each char and pass it to paint, but I am afraid it wont result. :S

Any recomended tutorial for it?

Thanks.

And Yes, it may happens when the bullet or the ships moves  at great speeds, especially when they move one to each other, it may happen that. I should consider doing on that way having a max speed for a bullet considering the ship size/speed and the bullet size/speed!

If the ship moves into a bullet during the ship-move-phase, it doesn't matter, because in the next bullet iteration, the collision will be detected anyway

Yes, I was thinking on that too, but the problem is that it requires 2 movements to detectc the collision and that may result on a no detection on cases in which the bullet speed is too high. For example. (This can always happens but detecting on every movement reduces the posibilities)

Ok, I could add the listener to the ship too, but it wont change anything in that problem becausse I wont be able to know if the ship collided with an own bullet or with another one becausse Iwont be able to recognize the target. Of course that from one collision, one is the source and the another one is the target, but I cant relationate on event with the another one. Or does the Collision event has a unique numer to match??

in my Thread. I first move all the ships, one to one, and then I move the bullets, ont to one.

But lets imagine this:

case1: Listener on the ship
Ship 1: moves and collides with Bullet 1 (I know there were a collision so I can remove the bullet from the world, and reduce the life of that ship, but as I dont know the target I cant know the kind of bullet to know: how much life to reduce and who shoted??? and I cannot do the check for not colliding with its owner) Source: Ship1

or this another one case:

case2: Listener on the bullet
Bullet 1 moves and collides with Ship 1 (I know there were a collision so I can remove the bullet from the world and I know how much life to reduce from the target if it was a ship, but as I dont know the target I cant know the ship so I cant reduce the life to anybody and I cannot do the check for not colliding with its owner) Source: Bullet1

case3: Listener on Both, all ships and all bullet
Bullet1 moves and collide ship1 (Cant know which ship was afected becausse I cant know the target) Source Bullet 1.

I have a BulletListener class that is the collisionListener for all the Bullets, Maybe I would have to use a new CollisionCHecking class for each ship on both CLIENT and SEVER sides.  On that way I can solve the problem on case 3. I guess the only way to do it is to have exclusive Collision Checking instances for each bullet and ship in the world.
That class will hava a reference to the object, so when a collision happens I can know the objects involved. (I dont care about who was source or target, I just care about the objects involved).

Wouldnt this increase the resources needed or maybe generate a bit of lag, having a new class for each object3d?