PhysX Vehicle From DBpro Primatives?

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paul5147

18

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Joined: 11th Jan 2006

Location: Hot & Sunny

Posted: 23rd Nov 2009 11:16

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Has any body managed to build a simple vehicle from dbpro's primatives yet.Even something really simple like a box for the body and cylinders for wheels that they can get to work.No matter what order i add the wheels or dimensions i give them or even rotating them prior to adding them they always spin at 90 degrees to the direction of travel.I must be missing some thing but have a look at the code and see if you can spot what i'm doing wrong.Thanks.

sync on
sync rate 60
autocam off
color backdrop 0, 0
set text font "Arial"
set text size 12
set text transparent

position camera 50,400,-400
point camera 0,0,0

phy start

`floor
make object box 1000,5000,1,5000
position object 1000,0,-30,0
phy make rigid body static box 1000

`set up a basic car model
set_up_car(1,0,16,0)

do
	MouseControl(5.0)
	phy update
	sync
loop

function MouseControl(Speed as float)
	xrotate camera camera angle x()+mousemovey()
	yrotate camera camera angle y()+mousemovex()
	if mouseclick()=1 then move camera Speed
	if mouseclick()=2 then move camera (0-Speed)
	r=mousemovex()
	r=mousemovey()
endfunction

function set_up_car(obj,posx,posy,posz)
	width=30
	height=10
	depth=10
	wheel_size=15
	
	`body
	make object box obj,width,height,depth
	color object obj,rgb(255,0,255)
	
	`mesh for wheel limbs
	make object cube obj+1,wheel_size
	
	`yrotate object obj+1,90
	`fix object pivot obj+1
	
	make mesh from object 1,obj+1
	
	`create wheels along the x axis and offset the limbs to desired corner
	`br
	add limb obj,1,1:offset limb obj,1,-20,0,-20:color limb obj,1,rgb(255,0,0)
	`bl
	add limb obj,2,1:offset limb obj,2,-20,0,20:color limb obj,2,rgb(0,255,0)
	`fr
	add limb obj,3,1:offset limb obj,3,20,0,-20:color limb obj,3,rgb(0,0,255)
	`fl
	add limb obj,4,1:offset limb obj,4,20,0,20:color limb obj,4,rgb(255,255,0)
	
	delete mesh 1
	delete object obj+1
	
	phy create vehicle obj
	
	phy add vehicle body obj,width,height,depth,0,0,0
	`br
	phy add vehicle wheel obj,1,-20,0,-20,wheel_size,wheel_size/3.0,0,0
	`bl
	phy add vehicle wheel obj,2,-20,0,20,wheel_size,wheel_size/3.0,0,0
	`fr
	phy add vehicle wheel obj,3,20,0,-20,wheel_size,wheel_size/3.0,1,0
	`fl
	phy add vehicle wheel obj,4,20,0,20,wheel_size,wheel_size/3.0,1,0
	
	phy set vehicle static friction obj,5.0

phy set vehicle dynamic friction obj,0.5

phy set vehicle max motor obj,200.0

phy set vehicle steering delta obj,0.25
	
	phy set vehicle max steering angle obj,1.0

phy set vehicle auto obj,1

phy set vehicle suspension spring obj,100

phy build vehicle obj

endfunction

+ Code Snippet

sync on
sync rate 60
autocam off
color backdrop 0, 0
set text font "Arial"
set text size 12
set text transparent

position camera 50,400,-400
point camera 0,0,0

phy start

`floor
make object box 1000,5000,1,5000
position object 1000,0,-30,0
phy make rigid body static box 1000

`set up a basic car model
set_up_car(1,0,16,0)

do
	MouseControl(5.0)
	phy update
	sync
loop


function MouseControl(Speed as float)
	xrotate camera camera angle x()+mousemovey()
	yrotate camera camera angle y()+mousemovex()
	if mouseclick()=1 then move camera Speed
	if mouseclick()=2 then move camera (0-Speed)
	r=mousemovex()
	r=mousemovey()
endfunction

function set_up_car(obj,posx,posy,posz)
	width=30
	height=10
	depth=10
	wheel_size=15
	
	`body
	make object box obj,width,height,depth
	color object obj,rgb(255,0,255)
	
	`mesh for wheel limbs
	make object cube obj+1,wheel_size
	
	`yrotate object obj+1,90
	`fix object pivot obj+1
	
	make mesh from object 1,obj+1
	
	`create wheels along the x axis and offset the limbs to desired corner
	`br
	add limb obj,1,1:offset limb obj,1,-20,0,-20:color limb obj,1,rgb(255,0,0)
	`bl
	add limb obj,2,1:offset limb obj,2,-20,0,20:color limb obj,2,rgb(0,255,0)
	`fr
	add limb obj,3,1:offset limb obj,3,20,0,-20:color limb obj,3,rgb(0,0,255)
	`fl
	add limb obj,4,1:offset limb obj,4,20,0,20:color limb obj,4,rgb(255,255,0)
	
	delete mesh 1
	delete object obj+1
	
	phy create vehicle obj
	
	phy add vehicle body obj,width,height,depth,0,0,0
	`br
	phy add vehicle wheel obj,1,-20,0,-20,wheel_size,wheel_size/3.0,0,0
	`bl
	phy add vehicle wheel obj,2,-20,0,20,wheel_size,wheel_size/3.0,0,0
	`fr
	phy add vehicle wheel obj,3,20,0,-20,wheel_size,wheel_size/3.0,1,0
	`fl
	phy add vehicle wheel obj,4,20,0,20,wheel_size,wheel_size/3.0,1,0
	
	phy set vehicle static friction obj,5.0

	phy set vehicle dynamic friction obj,0.5

	phy set vehicle max motor obj,200.0

	phy set vehicle steering delta obj,0.25
	
	phy set vehicle max steering angle obj,1.0

	phy set vehicle auto obj,1

	phy set vehicle suspension spring obj,100

	phy build vehicle obj


endfunction

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HowDo

21

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Joined: 28th Nov 2002

Location: United Kingdom

Posted: 23rd Nov 2009 20:14 Edited at: 23rd Nov 2009 23:02

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this might work, get you going so you can fine tune it.

+ Code Snippet

PHY ADD VEHICLE BODY obj, 28.28,0.00,20.00, 0,0.00,0
PHY ADD VEHICLE WHEEL obj,1, 20.00, 0.00, 20.00, 7.50, 0.00, 0, 0 :`new limb
PHY ADD VEHICLE WHEEL obj,2, 20.00, 0.00, -20.00, 7.50, 0.00, 0, 1 :`new limb
PHY ADD VEHICLE WHEEL obj,4, -20.00, 0.00, -20.00, 7.50, 0.00, 1, 0 :`new limb
PHY ADD VEHICLE WHEEL obj,3, -20.00, 0.00, 20.00, 7.50, 0.00, 1, 1 :`new limb

if you are following the chm doc, draw out the position that they give for the 4 wheels, place them in the order you read it, this will show which wheels go where, and can only be placed in that order.

edit
been trying to make it do it, however like last time I have still have not got it to work, like you are finding out.

the only quick way is to make the object in a 3D package then use that.

Dark Physics makes any hot drink go cold.

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HowDo

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Joined: 28th Nov 2002

Location: United Kingdom

Posted: 23rd Nov 2009 21:31 Edited at: 23rd Nov 2009 21:33

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yeah! found out how to do it. ok when building your model with primitives build it in the y direction.

meaning your vehicle is standing on its rear bumper like so. that way theres a rotate object in the vehicle demo.

Dark Physics makes any hot drink go cold.

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paul5147

18

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Joined: 11th Jan 2006

Location: Hot & Sunny

Posted: 24th Nov 2009 12:54

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Thanks for your sugestions but they dont seem to be working as i'd expect them to.I've been trying this off and on for a few days now and this is as far as ive got and i seem to be getting there except for one minor bug.
what i've ended up doing,because for some reason the wheels were always driven at 90 degrees to the vehicle and the rotate object commands,even when used with a fix object pivot command seem to be ignored by the physx engine is this.
1. make an object as a place holder for the vehicle
2. make a limb(1) to represent the vehicle body,it only seems to like it made onlong the z axis at present,though i will try others later.
3. add the wheel limbs,back right(2),back left(3),front right(4),front left(5),then link limbs to limb (1) the body
4. rotate limb(1) 90 degrees around its y axis
5. add the body to physx vehicle
6. add the wheels in this order back right,back left,front right,
front left
7. set up rest of vehicle properties and build it

now this seems to work,it points in the right direction,goes in the right direction,even the wheels spin in the right direction,it just doesnt turn properly.

sync on
sync rate 60
autocam off
color backdrop 0, 0
set text font "Arial"
set text size 12
set text transparent

position camera 50,400,-400
point camera 0,0,0

phy start

`floor
make object box 1000,5000,1,5000
position object 1000,0,-30,0
phy make rigid body static box 1000
`make object box 1002,100,1.01,100
`position object 1002,0,-30,0
`phy make rigid body static box 1002
`color object 1002,rgb(0,255,255)
`
``pole
`make object box 1001,20,30,20
`position object 1001,40,-30,0
`phy make rigid body static box 1001
`color object 1001,rgb(0,0,0)

`set up a basic car model
set_up_car(1,0,16,0)

do
	MouseControl(5.0)
	phy update
	sync
loop

function MouseControl(Speed as float)
	xrotate camera camera angle x()+mousemovey()
	yrotate camera camera angle y()+mousemovex()
	if mouseclick()=1 then move camera Speed
	if mouseclick()=2 then move camera (0-Speed)
	r=mousemovex()
	r=mousemovey()
endfunction

function set_up_car(obj,posx,posy,posz)
	width=30
	height=10
	depth=10
	local wheel_size as float=15.0
	local r as float=2.0
	local h as float=12.0
	`body
	make object box obj,width,height,depth
	color object obj,rgb(255,0,255)
	position object obj,posx,posy,posz
	
	make object cube obj+1,1
	make mesh from object 1,obj+1
	add limb obj,1,1
	delete mesh 1
	delete object obj+1
	
	`mesh for wheel limbs
	make object cube obj+1,wheel_size
	make mesh from object 1,obj+1
	
	`create wheels along the x axis and offset the limbs to desired corner
	`br
	add limb obj,2,1:offset limb obj,2,-20,-2.99,20:color limb obj,2,rgb(255,0,0)
	link limb obj,1,2
	`bl
	add limb obj,3,1:offset limb obj,3,20,-2.99,20:color limb obj,3,rgb(0,255,0)
	link limb obj,1,3
	`fr
	add limb obj,4,1:offset limb obj,4,-20,-2.99,-20:color limb obj,4,rgb(0,0,255)
	link limb obj,1,4
	`fl
	add limb obj,5,1:offset limb obj,5,20,-2.99,-20:color limb obj,5,rgb(255,255,0)
	link limb obj,1,5

delete mesh 1
	delete object obj+1
	
	rotate limb obj,1,0,-90,0
	
	phy create vehicle obj
	
	phy add vehicle body obj,width,height,depth,0,0,0
	`br
	phy add vehicle wheel obj,2,-20,-2.99,-20,wheel_size/r,0.01,0,1
	`bl
	phy add vehicle wheel obj,3,-20,-2.99,20,wheel_size/r,0.01,0,1
	`fr
	phy add vehicle wheel obj,4,20,-2.99,-20,wheel_size/r,0.01,1,1
	`fl
	phy add vehicle wheel obj,5,20,-2.99,20,wheel_size/r,0.01,1,1
	
	phy set vehicle static friction obj,5.0

phy set vehicle dynamic friction obj,0.5

phy set vehicle max motor obj,400.0

phy set vehicle steering delta obj,0.25

phy set vehicle max steering angle obj,1.0

phy set vehicle auto obj,1

`phy set vehicle mass obj,500

phy set vehicle suspension spring obj,100

phy build vehicle obj
endfunction

+ Code Snippet

sync on
sync rate 60
autocam off
color backdrop 0, 0
set text font "Arial"
set text size 12
set text transparent

position camera 50,400,-400
point camera 0,0,0

phy start

`floor
make object box 1000,5000,1,5000
position object 1000,0,-30,0
phy make rigid body static box 1000
`make object box 1002,100,1.01,100
`position object 1002,0,-30,0
`phy make rigid body static box 1002
`color object 1002,rgb(0,255,255)
`
``pole
`make object box 1001,20,30,20
`position object 1001,40,-30,0
`phy make rigid body static box 1001
`color object 1001,rgb(0,0,0)

`set up a basic car model
set_up_car(1,0,16,0)

do
	MouseControl(5.0)
	phy update
	sync
loop


function MouseControl(Speed as float)
	xrotate camera camera angle x()+mousemovey()
	yrotate camera camera angle y()+mousemovex()
	if mouseclick()=1 then move camera Speed
	if mouseclick()=2 then move camera (0-Speed)
	r=mousemovex()
	r=mousemovey()
endfunction

function set_up_car(obj,posx,posy,posz)
	width=30
	height=10
	depth=10
	local wheel_size as float=15.0
	local r as float=2.0
	local h as float=12.0
	`body
	make object box obj,width,height,depth
	color object obj,rgb(255,0,255)
	position object obj,posx,posy,posz
	
	make object cube obj+1,1
	make mesh from object 1,obj+1
	add limb obj,1,1
	delete mesh 1
	delete object obj+1
	
	`mesh for wheel limbs
	make object cube obj+1,wheel_size
	make mesh from object 1,obj+1
	
	`create wheels along the x axis and offset the limbs to desired corner
	`br
	add limb obj,2,1:offset limb obj,2,-20,-2.99,20:color limb obj,2,rgb(255,0,0)
	link limb obj,1,2
	`bl
	add limb obj,3,1:offset limb obj,3,20,-2.99,20:color limb obj,3,rgb(0,255,0)
	link limb obj,1,3
	`fr
	add limb obj,4,1:offset limb obj,4,-20,-2.99,-20:color limb obj,4,rgb(0,0,255)
	link limb obj,1,4
	`fl
	add limb obj,5,1:offset limb obj,5,20,-2.99,-20:color limb obj,5,rgb(255,255,0)
	link limb obj,1,5

	delete mesh 1
	delete object obj+1
	
	rotate limb obj,1,0,-90,0
	
	phy create vehicle obj
	
	phy add vehicle body obj,width,height,depth,0,0,0
	`br
	phy add vehicle wheel obj,2,-20,-2.99,-20,wheel_size/r,0.01,0,1
	`bl
	phy add vehicle wheel obj,3,-20,-2.99,20,wheel_size/r,0.01,0,1
	`fr
	phy add vehicle wheel obj,4,20,-2.99,-20,wheel_size/r,0.01,1,1
	`fl
	phy add vehicle wheel obj,5,20,-2.99,20,wheel_size/r,0.01,1,1
	
	phy set vehicle static friction obj,5.0

	phy set vehicle dynamic friction obj,0.5

	phy set vehicle max motor obj,400.0

	phy set vehicle steering delta obj,0.25

	phy set vehicle max steering angle obj,1.0

	phy set vehicle auto obj,1

	`phy set vehicle mass obj,500

	phy set vehicle suspension spring obj,100

	phy build vehicle obj
endfunction

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HowDo

21

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Joined: 28th Nov 2002

Location: United Kingdom

Posted: 24th Nov 2009 14:28

Link

found this, might help or explain how to go about doing a vehicle.

Written by Tatts.

http://forum.thegamecreators.com/?m=forum_view&t=146920&b=30

Dark Physics makes any hot drink go cold.

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paul5147

18

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Joined: 11th Jan 2006

Location: Hot & Sunny

Posted: 24th Nov 2009 16:48

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Thanks howdo,read that a couple of times,i dont have a problem riging the vehicles i create outside of dbpro,its just some of the primatives that dbpro creates dont seem to be set up in the correct orientation to use directly in dark physics,and the fix object pivot seems to get over ridden by physx thats why i had to use the rotate limb commands instead to get it to almost work. Latest version is ok except for steering is back to front,though i did find how to make a rear wheel steering vehicle,an almost a motorcycle if you hide 2 of the wheel limbs!If physx is allowed in the coding challenges thread id ask for this as the next idea to see if any one can get a vehicle working using just dbpro's own make object commands.

sync on
sync rate 60
autocam off
color backdrop 0, 0
set text font "Arial"
set text size 12
set text transparent

position camera 5,40,-40
point camera 0,0,0

phy start

`floor
make object box 1000,500,1,500
position object 1000,0,0,0
phy make rigid body static box 1000

`debris
for l=1001 to 1200
	make object cube l,0.7
	color object l,rgb(0,0,0)
	position object l,rnd(200)-100,3,rnd(200)-100
	phy make rigid body dynamic box l
next l

`set up a basic car model
set_up_car(1,0,16,0)

do
	MouseControl(1.0)
	phy update
	sync
loop

function MouseControl(Speed as float)
	xrotate camera camera angle x()+mousemovey()
	yrotate camera camera angle y()+mousemovex()
	if mouseclick()=1 then move camera Speed
	if mouseclick()=2 then move camera (0-Speed)
	r=mousemovex()
	r=mousemovey()
endfunction

function set_up_car(obj,posx,posy,posz)
	width=3.0
	height=1.0
	depth=1.0
	local wheel_size as float=1.5
	local r as float=2.0
	local h as float=2.0
	`body
	make object box obj,width,height,depth
	color object obj,rgb(255,0,255)
	position object obj,posx,posy,posz
	
	make object cube obj+1,1
	make mesh from object 1,obj+1
	add limb obj,1,1
	delete mesh 1
	delete object obj+1
	
	`mesh for wheel limbs
	make object cube obj+1,wheel_size
	make mesh from object 1,obj+1
	
	rotate limb obj,1,0,90,180
	
	`create wheels along the x axis and offset the limbs to desired corner
	`br
	add limb obj,2,1:offset limb obj,2,-2.0,0,2.0:color limb obj,2,rgb(255,0,0)
	link limb obj,1,2
	`bl
	add limb obj,3,1:offset limb obj,3,2.0,0,2.0:color limb obj,3,rgb(0,255,0)
	link limb obj,1,3
	`fr
	add limb obj,4,1:offset limb obj,4,-2.0,0,-2.0:color limb obj,4,rgb(0,0,255)
	link limb obj,1,4
	`fl
	add limb obj,5,1:offset limb obj,5,2.0,0,-2.0:color limb obj,5,rgb(255,255,0)
	link limb obj,1,5

delete mesh 1
	delete object obj+1
	
	phy create vehicle obj
	
	phy add vehicle body obj,width,height,depth,0,0,0
	`br
	phy add vehicle wheel obj,2,-2.0,0,-2.0,wheel_size/r,(wheel_size/r)/h,0,0
	`bl
	phy add vehicle wheel obj,3,-2.0,0,2.0,wheel_size/r,(wheel_size/r)/h,0,0
	`fr
	phy add vehicle wheel obj,4,2.0,0,-2.0,wheel_size/r,(wheel_size/r)/h,1,0
	`fl
	phy add vehicle wheel obj,5,2.0,0,2.0,wheel_size/r,(wheel_size/r)/h,1,0
	
	phy set vehicle static friction obj,5.0

phy set vehicle dynamic friction obj,1.0

phy set vehicle max motor obj,800.0

phy set vehicle steering delta obj,0.25

phy set vehicle max steering angle obj,1.0

phy set vehicle auto obj,1

phy set vehicle mass obj,80

phy set vehicle suspension spring obj,100

phy build vehicle obj
endfunction

+ Code Snippet

sync on
sync rate 60
autocam off
color backdrop 0, 0
set text font "Arial"
set text size 12
set text transparent

position camera 5,40,-40
point camera 0,0,0

phy start

`floor
make object box 1000,500,1,500
position object 1000,0,0,0
phy make rigid body static box 1000

`debris
for l=1001 to 1200
	make object cube l,0.7
	color object l,rgb(0,0,0)
	position object l,rnd(200)-100,3,rnd(200)-100
	phy make rigid body dynamic box l
next l

`set up a basic car model
set_up_car(1,0,16,0)

do
	MouseControl(1.0)
	phy update
	sync
loop


function MouseControl(Speed as float)
	xrotate camera camera angle x()+mousemovey()
	yrotate camera camera angle y()+mousemovex()
	if mouseclick()=1 then move camera Speed
	if mouseclick()=2 then move camera (0-Speed)
	r=mousemovex()
	r=mousemovey()
endfunction

function set_up_car(obj,posx,posy,posz)
	width=3.0
	height=1.0
	depth=1.0
	local wheel_size as float=1.5
	local r as float=2.0
	local h as float=2.0
	`body
	make object box obj,width,height,depth
	color object obj,rgb(255,0,255)
	position object obj,posx,posy,posz
	
	make object cube obj+1,1
	make mesh from object 1,obj+1
	add limb obj,1,1
	delete mesh 1
	delete object obj+1
	
	`mesh for wheel limbs
	make object cube obj+1,wheel_size
	make mesh from object 1,obj+1
	
	rotate limb obj,1,0,90,180
	
	`create wheels along the x axis and offset the limbs to desired corner
	`br
	add limb obj,2,1:offset limb obj,2,-2.0,0,2.0:color limb obj,2,rgb(255,0,0)
	link limb obj,1,2
	`bl
	add limb obj,3,1:offset limb obj,3,2.0,0,2.0:color limb obj,3,rgb(0,255,0)
	link limb obj,1,3
	`fr
	add limb obj,4,1:offset limb obj,4,-2.0,0,-2.0:color limb obj,4,rgb(0,0,255)
	link limb obj,1,4
	`fl
	add limb obj,5,1:offset limb obj,5,2.0,0,-2.0:color limb obj,5,rgb(255,255,0)
	link limb obj,1,5

	delete mesh 1
	delete object obj+1
	
	phy create vehicle obj
	
	phy add vehicle body obj,width,height,depth,0,0,0
	`br
	phy add vehicle wheel obj,2,-2.0,0,-2.0,wheel_size/r,(wheel_size/r)/h,0,0
	`bl
	phy add vehicle wheel obj,3,-2.0,0,2.0,wheel_size/r,(wheel_size/r)/h,0,0
	`fr
	phy add vehicle wheel obj,4,2.0,0,-2.0,wheel_size/r,(wheel_size/r)/h,1,0
	`fl
	phy add vehicle wheel obj,5,2.0,0,2.0,wheel_size/r,(wheel_size/r)/h,1,0
	
	phy set vehicle static friction obj,5.0

	phy set vehicle dynamic friction obj,1.0

	phy set vehicle max motor obj,800.0

	phy set vehicle steering delta obj,0.25

	phy set vehicle max steering angle obj,1.0

	phy set vehicle auto obj,1

	phy set vehicle mass obj,80

	phy set vehicle suspension spring obj,100

	phy build vehicle obj
endfunction

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HowDo

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Joined: 28th Nov 2002

Location: United Kingdom

Posted: 24th Nov 2009 17:17

Link

do you use the Nvidia visual debugger to see what is going on?
if not you can get the latest one here.

http://developer.nvidia.com/object/pvd_home.html

Also if you not done so download the Nvidia SDK and look at the code they use to make vehicles to work.

Keep going you must be very close to cracking how this is done, will be very usefully later on for others to use.

Dark Physics makes any hot drink go cold.

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paul5147

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Joined: 11th Jan 2006

Location: Hot & Sunny

Posted: 27th Nov 2009 15:08

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At last!
Finally got this to work

sync on
sync rate 60
autocam off
color backdrop 0, 0
set text font "Arial"
set text size 12
set text transparent

position camera 5,40,-40
point camera 0,0,0

phy start

`floor
make object box 1,5000,1,5000
phy make rigid body static box 1

`car

`body
make object box 2,1.0,0.5,3.0

`wheel mesh
make object cube 3,1.0
make mesh from object 1,3

`add wheel limbs
`br
add limb 2,1,1:color limb 2,1,rgb(255,0,0)
`bl
add limb 2,2,1:color limb 2,2,rgb(0,255,0)
`fr
add limb 2,3,1:color limb 2,3,rgb(0,0,255)
`fl
add limb 2,4,1:color limb 2,4,rgb(255,255,0)

`delete unwanted objects/mesh
delete object 3
delete mesh 1

`position wheels
`br
offset limb 2,1,-1.0,0.0,1.5:link limb 2,0,1
`bl
offset limb 2,2,1.0,0.0,1.5:link limb 2,0,2
`fr
offset limb 2,3,-1.0,0.0,-1.5:link limb 2,0,3
`fl
offset limb 2,4,1.0,0.0,-1.5:link limb 2,0,4

`y rotate object to face to the right
rotate limb 2,0,0.0,-90.0,0

`position object
position object 2,0,5,0

`make the car
phy create vehicle 2
phy add vehicle body 2,3.0,1.0,1.0,0.0,0.0,0.0
phy add vehicle wheel 2,1,1.0,-0.40,1.5,0.7,0.2,0,1
phy add vehicle wheel 2,2,1.0,-0.40,-1.5,0.7,0.2,0,1
phy add vehicle wheel 2,3,-1.0,-0.40,-1.5,0.7,0.2,1,1
phy add vehicle wheel 2,4,-1.0,-0.40,1.5,0.7,0.2,1,1
`car properties
phy set vehicle static friction 2,5.0
phy set vehicle dynamic friction 2,1.0
phy set vehicle max motor 2,400.0
phy set vehicle steering delta 2,0.1
phy set vehicle max steering angle 2,0.3
phy set vehicle auto 2,1
`build the car
phy build vehicle 2

do
	mousecontrol(0.2)
	phy update
	sync
loop

function MouseControl(Speed as float)
	xrotate camera camera angle x()+mousemovey()
	yrotate camera camera angle y()+mousemovex()
	if mouseclick()=1 then move camera Speed
	if mouseclick()=2 then move camera (0-Speed)
	r=mousemovex()
	r=mousemovey()
endfunction

+ Code Snippet

`%ProjectTitle%
`======================
`©%Author%
`======================
`Main Source File


sync on
sync rate 60
autocam off
color backdrop 0, 0
set text font "Arial"
set text size 12
set text transparent

position camera 5,40,-40
point camera 0,0,0

phy start

`floor
make object box 1,5000,1,5000
phy make rigid body static box 1

`car

`body
make object box 2,1.0,0.5,3.0

`wheel mesh
make object cube 3,1.0
make mesh from object 1,3

`add wheel limbs
`br
add limb 2,1,1:color limb 2,1,rgb(255,0,0)
`bl
add limb 2,2,1:color limb 2,2,rgb(0,255,0)
`fr
add limb 2,3,1:color limb 2,3,rgb(0,0,255)
`fl
add limb 2,4,1:color limb 2,4,rgb(255,255,0)

`delete unwanted objects/mesh
delete object 3
delete mesh 1

`position wheels
`br
offset limb 2,1,-1.0,0.0,1.5:link limb 2,0,1
`bl
offset limb 2,2,1.0,0.0,1.5:link limb 2,0,2
`fr
offset limb 2,3,-1.0,0.0,-1.5:link limb 2,0,3
`fl
offset limb 2,4,1.0,0.0,-1.5:link limb 2,0,4

`y rotate object to face to the right
rotate limb 2,0,0.0,-90.0,0

`position object
position object 2,0,5,0

`make the car
phy create vehicle 2
phy add vehicle body 2,3.0,1.0,1.0,0.0,0.0,0.0
phy add vehicle wheel 2,1,1.0,-0.40,1.5,0.7,0.2,0,1
phy add vehicle wheel 2,2,1.0,-0.40,-1.5,0.7,0.2,0,1
phy add vehicle wheel 2,3,-1.0,-0.40,-1.5,0.7,0.2,1,1
phy add vehicle wheel 2,4,-1.0,-0.40,1.5,0.7,0.2,1,1
`car properties
phy set vehicle static friction 2,5.0
phy set vehicle dynamic friction 2,1.0
phy set vehicle max motor 2,400.0
phy set vehicle steering delta 2,0.1
phy set vehicle max steering angle 2,0.3
phy set vehicle auto 2,1
`build the car
phy build vehicle 2


do
	mousecontrol(0.2)
	phy update
	sync
loop


function MouseControl(Speed as float)
	xrotate camera camera angle x()+mousemovey()
	yrotate camera camera angle y()+mousemovex()
	if mouseclick()=1 then move camera Speed
	if mouseclick()=2 then move camera (0-Speed)
	r=mousemovex()
	r=mousemovey()
endfunction

But still not sure why or even how,because the values you have to put into the phy add wheel commands have no relevance to the objects you make the model from,or even the positions and sizes of them.For a comercial add on thats suposed to make this sort of thing easier the documentation needs some serious work.Or at least explain how to get these values from what you start with in the model.Why does it need positions for the wheels and there limb numbers,surely if you have the limb number it should now where they are in relation to the body limb because it always assumes limb 0 is the body of the vehicle.The positions you then have to give it to make it work all then seem to be mirrored or inverted from what you would expect having just made them.
Well theres my little rant for week,time for the weekend and bit of relaxing coding time!!!!!

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Southside Games

14

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Joined: 1st Jan 2010

Location: Don\'t tell me what to do!

Posted: 2nd Jan 2010 03:57

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I can make the vihicle fine. but the modol is sideways. I just need to know how to fix it. when I run it in the debuger it says that the car is facing the right way.

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Dark Physics & Dark A.I. & Dark Dynamix / PhysX Vehicle From DBpro Primatives?

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