Hello,

I am a first time game creator who is making an Asteroids game for a school project. Everything is going well, but I'm trying to implement a mechanic in which there are two different colors for asteroids, and two different colors for the ship's bullets. Bullets can only affect like-colored Asteroids, but not different colored ones.

My problem is that I've set up my code so that every time the player presses "S", a counter increases by one. If the counter is divisible by 2, then the bullets should be white. If not, they should be black.

The bullets do change color, but there are many times when I press the S button, but the bullets don't change color.

Code: (I'm not very good at this, but I tried my best)

using UnityEngine; using System.Collections;

public class ShipMovement : MonoBehaviour {

public float RotationSpeed;
public float Thrust;
public ParticleSystem Particle;
public GameObject BulletW;
public GameObject BulletB;
public float ShipColor;

// Use this for initialization
void Start() 
{
    ShipColor = 2;
}

// Update is called once per frame
void Update() 
{


    if (Input.GetKeyDown (KeyCode.Space)) {
        if (ShipColor % 2 == 0)
            Instantiate (BulletW, transform.position, transform.rotation);
        else
            Instantiate (BulletB, transform.position, transform.rotation);
    }


}

void FixedUpdate()
{
    if (Input.GetKey (KeyCode.S))
        ShipColor  = 1;
    if (Input.GetKey (KeyCode.A)) {
        rigidbody2D.angularVelocity = RotationSpeed;
    } else if (Input.GetKey (KeyCode.D)) {
        rigidbody2D.angularVelocity = -RotationSpeed;
    } else {
        rigidbody2D.angularVelocity = 0;
    }


    if (Input.GetKey (KeyCode.W)) {
        rigidbody2D.AddForce (transform.up * Thrust);
        Particle.Play ();
    } else {
        Particle.Stop ();
    }




}

}

BulletW = White bullets and BulletB = black bullets

I originally intended the ship to change color as well (hence the name of the variable) but I have since moved away from that idea.

The Particle is an exhaust-like system that emanates from the back of the ship.

Thrust and Rotation affect the ship's speed and which it rotates.

Hopefully, some one can help me figure this out, and soon, since if I can't figure out what's wrong, I'll have to switch projects.

Thank you!