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  Strafing 3d  (Read 786 times)
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Offline MickeyB

Senior Member




my game will work, my game will work!


« Posted 2004-10-21 15:50:37 »

There is no movement on the Y plane except rotation, which is 'heading' below.  

to strafe right I am trying:

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            xpos += (float) Math.cos(heading * CubeWars.piover180) * speed;
            zpos += (float) Math.sin(heading * CubeWars.piover180) * speed;


At game launch, strfing right works, but the moment I rotate on the Y axis, strafing no longer works.
Where is my math wrong?  (I was a Bio major who only took calculus in 1985, so laugh it up! Smiley )

MickeyB

Current Project: http://www22.brinkster.com/mbowles/
Offline Catharsis

Senior Member


Medals: 4
Exp: 18 years


TyphonRT rocks!


« Reply #1 - Posted 2004-10-21 19:04:46 »

Quote
At game launch, strfing right works, but the moment I rotate on the Y axis, strafing no longer works. Where is my math wrong?  (I was a Bio major who only took calculus in 1985, so laugh it up! Smiley )


I'm just copying in the code to strafe right in Auriga3D, so you can work it take a stab at converting it for your purposes.  +Z is up in Auriga3D / Quake3

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/**
 *  Move the camera's position in our world.
 * The direction of movement is based on the current viewing direction.
 * moves the camera 90 degress to the right;
 *
 * @param  step  Amount to move.
 */

public final void strafeRight(float step)
{
   origin.x -= step * (float) Math.sin(yaw + STRAFERIGHT);
   origin.y += step * (float) Math.cos(yaw + STRAFERIGHT);
}


STRAFERIGHT = -90 * PIDIV180;
yaw is rotation about the Z axis

Offline MickeyB

Senior Member




my game will work, my game will work!


« Reply #2 - Posted 2004-10-22 11:18:00 »

Thanks.  After some tinkering, I think I have it.  

M

MickeyB

Current Project: http://www22.brinkster.com/mbowles/
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