Game Design

Re: Spaceship sight

Skygaz — Sun, 05 Jul 2009 20:01:34 GMT

Dave Carlile:
This may not be the best way, but this seems like a reasonable solution...

// get a rotation matrix from the quaternion
Matrix matrix = Matrix.CreateFromQuaternion(shipOrientation);

// use the forward vector from the matrix to determine the direction the ship is facing
// this vector should already be normalized
Vector3 shipDirection = matrix.Forward;

// if you want to draw something 100 units out from the ship you can find the point using the direction vector
aimPosition = shipDirection * 100.0f;

Now draw your aiming sight at aimPosition.

Thanks for the answer :D

Re: Spaceship sight

Dave Carlile — Thu, 02 Jul 2009 20:59:38 GMT

This may not be the best way, but this seems like a reasonable solution...

// get a rotation matrix from the quaternion
Matrix matrix = Matrix.CreateFromQuaternion(shipOrientation);

// use the forward vector from the matrix to determine the direction the ship is facing
// this vector should already be normalized
Vector3 shipDirection = matrix.Forward;

// if you want to draw something 100 units out from the ship you can find the point using the direction vector
aimPosition = shipDirection * 100.0f;

Now draw your aiming sight at aimPosition.

Spaceship sight

Skygaz — Mon, 29 Jun 2009 23:41:04 GMT

Hi all, I'm trying to develop a small spaceship game. I have a third person camera. To help the player to aim I need to put a sight in front of it. How can I do? Where I have to put the sight? Because if I take the orientation of the spaceship (a quaternion) and transform the Vector3.UnitZ it seem to me to be wrong... (where I shoot is not where I'm aiming).

ps: the projectile is created on the spaceship position and take the ship direction.

Thanks