Hi,
yesterday i was testing the Phyiscs Engine, i read the help file and practice it and i just want to see how its really work for cars.
so i took the car and tires from Newton Engine because i dont have other models and i was try to make stuff work and this thing drive me crazy!!!

i have two main problems:

1) Wheels problems like in this picture:



2) i have motoraized my wheels and when the wheel is spinning there is no friction and the body dont move....
here is my code:
Code:

---

 


//Physics demo test
//Non-Public
//Writed by Matan Golan

//Starting Var's:
string level_str = <test.WMB>; 
var video_mode = 8;
var video_screen = 2;
var d3d_lightres = on;

//Panel Fonts:
font digit_font = "arial",1,20;

//Information Panel:
panel video_memory
{
 	pos_x = 0; pos_y = 0;
 	digits = 0, 0, 5, digit_font, 1,d3d_texskins; //Level models
 	digits = 0,20, 5, digit_font, 1,d3d_texsurfs; //Surface
 	digits = 0,40, 5, digit_font, 1,d3d_texsmaps; //shadows
 	digits = 0,60, 5, digit_font, 1,d3d_texbmaps; //bmaps
 	flags =  VISIBLE;
} 

//Vars:
var bodymass = 800;
var tiremass = 30;
var gravity[3] = 0,0,-10;
entity* cbody;
entity* ctire;
entity* floor;
var conID;

function	main_quit()
{
	exit;
}


function camera_control()
{	
	var force[3];
	while(1)
	{
		if(!mouse_right)
		{
			camera.pan-=20*mouse_force.x*time;
			camera.tilt+=20*mouse_force.y*time;
		}
		
		vec_set(force,nullvector);
		if(key_a)
		{
			force.x-=1;
		}
		if(key_d)
		{
			force.x+=1;
		}
		if(key_w)
		{
			force.y+=1;
		}
		if(key_s)
		{
			force.y-=1;
		}
		
			if(key_a & key_shift)
		{
			force.x-=3;
		}
		if(key_d & key_shift)
		{
			force.x+=3;
		}
		if(key_w & key_shift)
		{
			force.y+=3;
		}
		if(key_s & key_shift)
		{
			force.y-=3;
		}
		
		camera.x+=20*cos(camera.pan)*cos(camera.tilt)*force.y*time;
		camera.y+=20*sin(camera.pan)*cos(camera.tilt)*force.y*time;
		camera.z+=20*sin(camera.tilt)*force.y*time;
		camera.x-=20*cos(camera.pan+90)*force.x*time;
		camera.y-=20*sin(camera.pan+90)*force.x*time;
		wait(1);
	}
}

function setcon()
{
	conID = phcon_add(ph_wheel,cbody,ctire);
	phcon_getposition(conID, temp);
   vec_set(cbody.x, temp);
	//phcon_setmotor(conID,vector(10, 50,0),nullvector,nullvector);
	phcon_setparams1 (conID, ctire.x, vector(0,0,1), vector(1,0,0));
	phcon_setparams2 (conID, vector(-45, 90, 0) ,nullvector,vector(90000,100,0));
	

   
   while(1)
   {
   	if(key_k)
   	{
   	phcon_setmotor(conID,nullvector,vector(50, 50,0),nullvector);
      }
      
      
wait(1);
}
}



Action Body
{
	cbody = my;
	phent_settype(cbody,ph_rigid,ph_poly);
	phent_setmass(cbody,bodymass,ph_box);
	phent_setdamping(cbody,20,20);
	phent_setfriction(cbody,40);	
}

Action Tire
{
	ctire = my;
	phent_settype(ctire,ph_rigid,PH_CYLINDER);
	phent_setmass(ctire,tiremass,ph_sphere);
	phent_setdamping(ctire,50,50);
	phent_setfriction(ctire,40);
	setcon();
}

//Main Starting Function:
function main()
{
level_load(level_str);
wait(3);
clip_size = 1;
d3d_anisotropy = 5;
d3d_mipmapping = 3;
d3d_shadowdepth = 24;

camera_control();	// get camera control by WASD
//All engine pre-setes are defined
//Call further function here:
ph_setgravity(gravity);
}


on_F9 = _sshot;
 

---

Dude you're gonna get flamed because there is no [Newton] in your post title. I have various problems like this. Can't help sorry , I wish I could. Just be prepared for Newton haters!!

I didnt use Newton Phyiscs i just use thier car model...

tnx any way

Easy part first. Raise the position of the car and let it fall to the ground. Otherwise it may be starting in the ground.

If that doesn't work then download the source from the buggy game on the download page and go from there.