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  Auto turrets  (Read 1317 times)
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Offline cubemaster21
« Posted 2012-04-20 01:31:19 »

I want to add a sort of turret to my game, that, if an enemy is close enough, the turret will begin to shoot it. but while it's shooting that one and another comes within range, i want it to stay on the same target. Is there any easy way to do this?

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Offline UprightPath
« Reply #1 - Posted 2012-04-20 01:39:15 »

Well, it depends on how your target selection really works, but something like...
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newTarget = getClosestTarget();
if(currentTarget == null) {
currentTarget = newTarget;
}

Should work.

Offline Geemili

Senior Member


Medals: 9
Projects: 1
Exp: 2 years


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« Reply #2 - Posted 2012-04-20 01:40:14 »

Make it check to see if its target is still in range and still exists. If not, find the next target.

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if(target==null||getDistance(x, y, target.x, target.y)>range) {
    target = getNextTarget()
}


[EDIT] It needs to be greater than, not less than.  Roll Eyes
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Offline DavidW

Junior Member


Medals: 3
Exp: 7 years



« Reply #3 - Posted 2012-04-20 01:51:49 »

How I would do this is have a boolean lookingForTarget which is set to false when the turret is shooting at some thing already.  So something like:

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public class Turret {

  private float radius = 15;   // Set this to whatever your radius is

  private boolean lookingForTarget = true;
  private Guy target = null;

  ... // Other vars

  public update(ArrayList<Guy> guys) {

    if(lookingForTarget) {
      for(Guy g: guys) {
        if(distanceFromMeToAGuy(g) < raduis) {
          target = g;
        lookingForTarget = false;
          break;          // In case more than one guy entered the raduis this update
                           // just select the first one, you could also
                           // prioritize by HP remaining, or whatever you like
      }
      }

    if(!lookingForTarget) {
      attack(target);
      if(target.isDead()) {
        target = null;
        lookingForTarget = true;
      }
    }
  }

... // more methods here

}

}


Okay so I see that while I was typing all this out others have replied, but I figured I'd post it anyway because whatever!  Tongue

Hello!
Offline ReBirth
« Reply #4 - Posted 2012-04-20 12:55:03 »

There're many way to do this, as sugessted above. How about your searching method, it works every loop or just when enemy comes or what?

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