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Re: newton
[Re: ventilator]
#113122
11/04/07 17:55
11/04/07 17:55
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Joined: Aug 2004
Posts: 1,345
Kyiv, Ukraine
VeT
Serious User
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Serious User
Joined: Aug 2004
Posts: 1,345
Kyiv, Ukraine
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Quote:
with moving characters
i can say, l'm just moving simple objects, called character ;-)))
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Re: newton
[Re: VeT]
#113123
11/04/07 18:17
11/04/07 18:17
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Joined: Aug 2004
Posts: 1,345
Kyiv, Ukraine
VeT
Serious User
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Serious User
Joined: Aug 2004
Posts: 1,345
Kyiv, Ukraine
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okay, here it is Code:
void MHonforceandtorque(NewtonBody* body)
{
float mass, ixx, iyy, izz;
NewtonBodyGetMassMatrix(body, &mass, &ixx, &iyy, &izz);
NewtonBodySetAutoFreeze (MH.NewtonChar, 0);
vec_set(temp_vec,vector(MH.keyX*100, MH.keyY*100,-mass*5));
vec_rotate(temp_vec,MH.model.pan);
NewtonBodySetForce(MH.NewtonChar,vectorf(temp_vec.x,temp_vec.y,temp_vec.z));
// damping
NewtonBodySetLinearDamping (MH.NewtonChar, 0.9);
// rotating
NewtonBodySetOmega(MH.NewtonChar, vectorf(0,0,-MH.mouseX*5));
// // speed limit
NewtonBodyGetVelocity(MH.NewtonChar, velocity);
temp_vec2.x = velocity[0];
temp_vec2.y = velocity[1];
temp_vec2.z = velocity[2];
// NewtonBodySetVelocity(MH.NewtonChar,vectorf(temp_vec2.x,temp_vec2.y,temp_vec2.z));
}
function player_init()
{
// MH.model = me;
MH.handler = handle(MH.model);
MH.NewtonChar = newton_addentity(MH.model, 10, NEWTON_SPHERE, MHonforceandtorque);
NewtonBodySetMassMatrix (MH.NewtonChar, 10.0, 10.0, 10.0, 10.0);
NewtonBodySetAngularDamping (MH.NewtonChar, vector(100,100,100));
}
PS:i use omega to move entity exactly as mouse moves ;-)
Last edited by VeT; 11/04/07 18:24.
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Re: newton
[Re: VeT]
#113124
11/04/07 18:36
11/04/07 18:36
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Joined: May 2002
Posts: 7,441
ventilator
OP
Senior Expert
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OP
Senior Expert
Joined: May 2002
Posts: 7,441
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some things i noticed: - the mass matrix already gets set in newton_addentity(). - be careful with vector()/vectorf(). newton doesn't work with vars. - i think if your "character" is a rolling sphere then it doesn't really make sense to rotate your steering force like that. or does setomega block all rotation? it's hard to say... maybe someone else has ideas. 
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Re: newton
[Re: VeT]
#113126
11/04/07 19:40
11/04/07 19:40
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Joined: Aug 2004
Posts: 1,345
Kyiv, Ukraine
VeT
Serious User
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Serious User
Joined: Aug 2004
Posts: 1,345
Kyiv, Ukraine
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debug shows that sphere looks in right position... red line is looking straight ahead, so problem isnt here so, i'd try to explain problem more exactly: - i press W, body moves forward... - if i allow body to stop, and then press A, body strafes normal - BUT if i dont allow it(for example, press W, press A, unperss W), body moves forvard-left... it's looks like forward force still working, but Code:
vec_set(temp_vec,vector(MH.keyX*100, MH.keyY*100,-mass*5));
and MH.keyX = (key_pressed(17) - key_pressed(31)); so, force =0, if W isnt pushed... thats main trouble :-( anyway, ventilator, thank you very much for help... i'd add you to credits :-D
Last edited by VeT; 11/04/07 20:09.
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