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 Strafing 3d  (Read 1500 times) 0 Members and 1 Guest are viewing this topic.
MickeyB

Senior Devvie

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:

 1  2 `            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! )

MickeyB

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

JGO Ninja

Medals: 75
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Exp: 21 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! )

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

 1  2  3  4  5  6  7  8  9  10  11  12 `/** *  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

Check out the TyphonRT Video Suite:
http://www.typhonvideo.com/

Founder & Principal Architect; TyphonRT, Inc.
http://www.typhonrt.org/
http://www.egrsoftware.com/
MickeyB

Senior Devvie

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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