implementing a car

[diedir]

Hi all

 

i am trying to make a car working like the monstertruck (for the moment)

 

but i don't know exactly how i can show up tires

because, i copied the monstertruck script with no luck

 

thanks for helping

[DaDonik]

As the physical tires of the car are just invisible raycasts you have to position the tire mesh at the same position and roatation as the tires.

 

Try something like:

SetEntityMatrix(VisibleTireMesh, GetEntityMatrix (RaycastTire));

[diedir]

thank you but where can i put that in the lua script ?

an error occurs when i put the line in."Exception violation...." and editor shuts down.

 

anyway an error occured when i "play" the monstertruck script even if the model shows up fine in editor....

 

"table index is nil"

and the line :

"classtable[modelreference]=class" is pointed

 

weird code there, loose my mind in it...

 

my car has no physic hull (for the moment), perhaps it is the problem...

[macklebee]

You cannot "play" object scripts... you can only play gamescripts in the editor (like fpscontroller.lua or driver.lua). Object scripts will return those errors any time you press the play button.

[diedir]

ok thanks macklebee for that precision.

i didn't made a difference before that.

 

if someone could describe the complete method for implementing

a simple car :

naming convention ?

dummy pivot placing ?

 

if it has something special to see...

because just giving the gmf created is not very formative...

[macklebee]

np, as long as you are using the code from the monstertruck script, you just need to fix the line that uses the lowercase "clamp" function... it should be "Clamp"... and also just make sure you have all of your models being loaded in the script for the tires... then just use a modified version of the driver.lua that loads your vehicle gmf... you might have to change which tires control the steering though in the driver.lua... the monstertruck script has the tires in a different order than the viperscout script...

[Marleys Ghost]

Have a look through these two threads:

 

http://leadwerks.com/werkspace/index.php?/topic/881-vehicle-monstertruck-lua-tireorder/page__view__findpost__p__7793

 

http://leadwerks.com/werkspace/index.php?/topic/1020-vehicle-implementation/page__view__findpost__p__9259

[diedir]

thanks both for answers

 

since i'am at job now

 

i can't try all that but i will this evening, thanks for the leads

[Marleys Ghost]

No problems diedir hope something is of help to you.

[diedir]

well, i created hull phy files with my car and the 4 wheels apart,

 

did mycar.lua and put the modified code found in the 1st link => no luck

 

tried with the monster_truck modified lua => with no luck too

 

tried modified driver_truck.lua in scripts/game and => crashed "Window access violation" when ctrl+g

 

will retry tomorrow, tired now...

 

EDIT:

 

still not working at the moment...

Edited March 17, 2010 by diedir

[diedir]

last news

 

i think that all my trouble is due to car hierarchy

that is not well transfered via object to gmf,

i must pass via fbx or dae file to keep the hierarchy or the pivot car.

well, i must digg in all that....

 

EDIT:

 

Great news : it works

thanks to macklebee and marley ghost for their code help

 

the problem was the model in obj which don't keep hierarchy with it to gmf !

 

trying the max to gmf export after parenting in max, worked !

we need a LE tool to do this outside max, please !

i can't afford a max license

Edited March 19, 2010 by diedir