Exemplo n.º 1
0
 public double distance(Units otherUnit) {
   return position.distance(otherUnit.position);
 }
Exemplo n.º 2
0
  /** Movement given no collision */
  public synchronized void moveNoCollision(double time) {
    if (time <= 0) {
      throw new InvalidParameterException("Cannot move the unit, time <= 0!");
    }

    if (Double.isNaN(time)) {
      throw new RuntimeException(
          "time is NaN. speed is " + speed + "  moving angle is " + movingAngle);
    }

    // Check if the unit is facing the required direction
    if (movingAngle == finalAngle) { // Already facing that direction
      if (this.destination != null) {
        if (speed * time >= position.distance(destination)) {
          xVelocity = 0;
          yVelocity = 0;
          position = destination;
          return;
        }
      }

      xVelocity = speed * Math.cos(movingAngle);
      yVelocity = speed * Math.sin(movingAngle);

      position.setX(Geometry.fixX(position.getX() + xVelocity * time));
      position.setY(Geometry.fixY(position.getY() + yVelocity * time));

    } else { // Need to turn to that direction
      double distance = finalAngle - movingAngle;
      double alternative = -(2 * Math.PI - finalAngle + movingAngle);

      if (distance < 0) {
        while (alternative <= -Math.PI) {
          alternative += 2 * Math.PI;
        }
      } else {
        while (alternative >= Math.PI) {
          alternative -= 2 * Math.PI;
        }
      }

      double angularDisplacement;
      if (Math.abs(distance) < Math.abs(alternative)) {
        angularDisplacement = distance;
      } else {
        angularDisplacement = alternative;
      }

      if (angularSpeed * time < Math.abs(angularDisplacement)) { // Does not finish turning
        movingAngle +=
            ((angularDisplacement) / Math.abs(angularDisplacement)) * angularSpeed * time;
        xVelocity = 0;
        yVelocity = 0;
      } else { // Finish turning with extra or no time left
        movingAngle = finalAngle;

        if (Double.isNaN(angularSpeed)) {
          throw new RuntimeException(
              "Angular speed is NaN. angulardisplacement is " + angularDisplacement);
        }

        if (Double.isInfinite(angularSpeed)) {
          throw new RuntimeException(
              "Angular speed is isInfinite. angulardisplacement is " + angularDisplacement);
        }

        if (Double.isNaN(angularDisplacement)) {
          throw new RuntimeException("angularDisplacement is NaN. angularSpeed is " + angularSpeed);
        }

        if (Double.isNaN(time - Math.abs(angularDisplacement) / angularSpeed)) {
          throw new RuntimeException(
              "Next input is NaN. angularSpeed is "
                  + angularSpeed
                  + " angularDisplacement is "
                  + angularDisplacement
                  + "time is "
                  + time);
        }

        moveNoCollision(time - Math.abs(angularDisplacement) / angularSpeed);
      }
    }
  }