Asteroids like movement for the player in 3d top down.

News & General Discussion
1

as the title says.
I just cant seem to get it right.

as of right now I got it like this:

transform.Translate(Vector3.forward * Time.deltaTime * Speed);

if ((Input.GetKey(KeyCode.W)) && (Speed < MaxSpeed))
{
Speed = Speed + Acceleration * Time.deltaTime;
}
else if ((Input.GetKey(KeyCode.S)) && (Speed > -MaxSpeed))
{
Speed = Speed - Deceleration * Time.deltaTime;
}

(players looks at the mouse btw)
but the player keeps moving at the same speed even when turning around.
I want it so the player keeps moving in the same direction when it turns to keep looking at the mouse.

any help?

2

I think you need to determine the vector of the direction of travel and move the player in that direction instead of “Vector3.forward”

3

stain2319 has it right. You are always moving “forward” even if you rotate your ship around. What you need to do instead of have a separate vector that is your “movement” vector. Then when you thrust, you can still use the forward vector to add to that vector. Finally, you should use that vector’s size/distance as the speed as well so you can just add it to the transform each update. You can still put a speed limiter on it.

That said…when I was making this exact thing in the past, I used the physics system. You just add force in the direction you are thrusting(still using that forward vector as a basis in the case of thrusting forward). And you can still add a speed limit as well. Then it’s just about tweaking values for force, friction, etc… And if you wanted to add a feature that slows the ship down you just turn friction on and it happens.

1 Like
4

An asteroids game is simplified physics implementation.

Your ship has “velocity” which is its current speed. It is a vector. Meaning it is 2 dimensional. It never decreases on its own, meaning if you accelerate and stop engines, the ship will continue flying in a straight line (newton’s laws say hi)

The ship accelerates in direction pointed by ship’s nose and can rotate while moving.

That’s entire asteroids, pretty much.

1 Like
5

You just need to have the turning input code before the movement input code then the forward movement will always be towards the mouse.