Game Development Community

Forward Jump

by Paul Clarke · in Torque Game Engine · 06/21/2009 (6:27 am) · 4 replies

I've been trying to modify jumping so that the player will move forward aswell vertical.

In Player::updateMove I found

// If we are facing into the surface jump up, otherwise
// jump away from surface.
F32 dot = mDot(pv,mJumpSurfaceNormal);
F32 impulse = mDataBlock->jumpForce / mMass;
if (dot <= 0.0f)

acc.z += mJumpSurfaceNormal.z * scaleZ * impulse * zSpeedScale;

else
{
acc.x += pv.x * impulse * dot;
acc.y += pv.y * impulse * dot;
acc.z += mJumpSurfaceNormal.z * scaleZ * impulse * zSpeedScale;
}

I tried adding acc.y += mJumpSurfaceNormal.z * scaleZ * impulse * zSpeedScale;, which makes the player move forward but only in one direction. I want to be able to jump forward in the direction that the player is facing.
I hope that makes sense I didn't really know how to explain it, I'm still kind of a noob at this so any help is appreciated.
NextNext Thread
PrevPrevious Thread
More from Torque Game Engine


Torque 3D Owner Aleksander Elvemo
#1
06/21/2009 (3:20 pm)
I would also like to know more about directional jumping =)

Torque Owner Infinitum3D
#2
06/22/2009 (7:35 am)
Don't know if this will work, but my first thought is to try something like %player.getRotation to get which way the player is facing.

Update: It might be %player.getTransform

This thread may help;
www.garagegames.com/community/forums/viewthread/34470

Torque Owner Daniel Buckmaster
T3D Steering Committee
#3
06/22/2009 (11:53 am)
We're in code, not script, so the %player syntax doesn't apply. But Tony has the right idea, you'll probably want to get the player's forward vector and add it to the jump direction. When you get a MatrixF from the getTransform method, I think column 0 is the forward vector. Try it out - call getTransform, getColumn, and add the vector you get. Experiment with the effect that adding different columns of the matrix gives you.

Torque Owner Paul Clarke
#4
06/23/2009 (4:15 am)
Thanks for the help guys.

Daniel, I just quickly tried your suggestion and it works almost perfectly, the only problem I have is that the player only jumps forward a small distance. I'll look into this later when I've got some spare time and hopefully I'll be able to sort it out.
Thanks again for the help.