Android Open Source - Station42 Bullet

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Back to project page Station42.

License

The source code is released under:

Apache License Version 2.0, January 2004 http://www.apache.org/licenses/ TERMS AND CONDITIONS FOR USE, REPRODUC...

Java Source Code

package com.station42.bullet;
//  www . j ava  2 s .c  o  m
import com.badlogic.gdx.math.Intersector;
import com.badlogic.gdx.math.Vector2;
import com.badlogic.gdx.math.Vector3;
import com.station42.base.Entity;

public class Bullet {
  private static Vector2 temp = new Vector2();
  private Vector2 startingLocation;
  private Vector2 nextLocation;
  private Vector2 velocity;
  private Entity shooter;
  private float lifetime;
  public Bullet(Vector2 origin, Vector2 velocity, Entity shooter) {
    this(origin, velocity, shooter, 1);
  }
  public Bullet(Vector2 origin, Vector2 velocity, Entity shooter, float lifetime) {
    this.startingLocation = origin.cpy();
    this.velocity = velocity.cpy();
    nextLocation = startingLocation.cpy().add(velocity);
    this.shooter = shooter;
    this.lifetime = lifetime;
  }
  public float intersectDurationLine(Vector2 segmentStart, Vector2 segmentEnd) {
    if (Intersector.intersectSegments(startingLocation,  nextLocation, 
        segmentStart, segmentEnd, temp))
    {
      return temp.dst(startingLocation) / velocity.len();
    } else {
      return -1;
    }
  }
  public float intersectDurationCircle(Vector2 center, float radius) {
    float displacement = Intersector.intersectSegmentCircleDisplace(startingLocation, nextLocation, center, radius, temp);
    if (displacement != Float.POSITIVE_INFINITY) {
      return temp.scl(-displacement).add(center).dst(startingLocation) / velocity.len();
    } else {
      return -1;
    }
  }
  public boolean isShooter(Entity testedEntity) {
    return testedEntity == shooter;
  }
  public boolean isAlive() {
    return lifetime > 0;
  }
  public void update(float delta) {
    temp.set(velocity);
    temp.scl(delta);
    startingLocation.add(temp);
    nextLocation.add(temp);
    lifetime -= delta;
  }
  public Vector2 getCurrentLocation() {
    return startingLocation;
  }
  public Vector2 getNextLocation() {
    return nextLocation;
  }
  public Vector2 getNextLocation(float f) {
    return temp.set(velocity).scl(f).add(startingLocation);
  }
  public Entity getShooter() {
    return shooter;
  }
}

Java Source Code List

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