Esenthel
Administrator
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RE: New SimpleVehicle class
(04-12-2013 10:25 PM)Ezequel Wrote: Will there be a tutorial for this?
This will be in next release:
Code:
/******************************************************************************/
Memc<Actor> actors;
SimpleVehicle vehicle;
/******************************************************************************/
void InitPre()
{
EE_INIT();
App.flag=APP_RESIZABLE|APP_MINIMIZABLE|APP_MAXIMIZABLE|APP_WORK_IN_BACKGROUND|APP_FULL_TOGGLE;
#ifdef DEBUG
App.flag|=APP_MEM_LEAKS|APP_BREAKPOINT_ON_ERROR;
#endif
Cam.dist=10;
Cam.pitch=-0.4;
D.viewFov(DegToRad(60)).mode(App.desktopW()*0.8, App.desktopH()*0.8);
}
/******************************************************************************/
bool Init()
{
Physics.create(EE_PHYSX_DLL_PATH);
actors.New().create(Plane(Vec(0, -1, 0), Vec(0, 1, 0))); // create ground
SimpleVehicle.Params params; // setup vehicle params
flt x=0.9, y=-0.5, z=1.8;
params.wheel[WHEEL_LEFT_FRONT ].pos.set(-x, y, z);
params.wheel[WHEEL_RIGHT_FRONT].pos.set( x, y, z);
params.wheel[WHEEL_LEFT_REAR ].pos.set(-x, y, -z);
params.wheel[WHEEL_RIGHT_REAR ].pos.set( x, y, -z);
PhysBody body; body.parts.New().create(Box(2, 1, 4)); body.setBox(); // create vehicle body
vehicle.create(body, params, 1, 1); // create vehicle
return true;
}
/******************************************************************************/
void Shut()
{
}
/******************************************************************************/
bool Update()
{
if(Kb.bp(KB_ESC))return false;
Physics.startSimulation().stopSimulation(); // update physics
// set vehicle input
flt forward=Kb.b(KB_W),
back =Kb.b(KB_S),
angle =Kb.b(KB_D)-Kb.b(KB_A);
flt accel, brake;
if(vehicle.speed()<=1 && back>forward) // if moving at slow speed and want to go backward
{
accel=-back ; // set negative acceleration
brake= forward; // set braking
}else
{
accel=forward;
brake=back;
}
vehicle.angle(angle).accel(accel).brake(brake);
// setup camera
Cam.at =vehicle.pos();
Cam.yaw=Angle(vehicle.matrix().z.xz())-PI_2;
Cam.setSpherical().updateVelocities(CAM_ATTACH_ACTOR).set();
return true;
}
/******************************************************************************/
void Draw()
{
D.clear(TURQ);
Physics.draw();
// draw wheels
SetMatrix();
REP(WHEEL_NUM)
{
WHEEL_TYPE wheel =WHEEL_TYPE(i);
Matrix matrix=vehicle.wheelMatrix(wheel); matrix.draw();
Tube(vehicle.wheelRadius(wheel), 0.2, matrix.pos, matrix.x).draw();
}
}
/******************************************************************************/
Quote:When the vehicle flips over, will it always flip back on its wheels like in the video?
That's not guaranteed.
Quote:I'm already playing with this, but i'm not able to push other physical bodies around
Please insert into above tutorial code this line to the Init function
Code:
actors.New().create(Box(1, 1, 1, Vec(0, 0, 2)));
for me it works fine.
Quote:if I just use vehicle.mass() and set it to some non 0 value the vehicle simulation breaks.
I recommend controlling vehicle mass through density parameter in the 'create' method.
However I've tried changing its mass during the simulation with
Code:
if(Kb.bp(KB_LCTRL))vehicle.mass(vehicle.mass()*2);
and it works fine, perhaps you've set the mass too big or too small somehow.
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| 04-13-2013 12:09 PM |
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candam
Member
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RE: New SimpleVehicle class
It's so impressive nice physics that you got over there 
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| 04-13-2013 12:11 PM |
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para
Member
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RE: New SimpleVehicle class
My issue was related to the actor body, it was a convex hull translated at min y = 0, possibly even scaled..for some reason it worked ok with regular vehicle class.. I made a new convex body and now all is working fine.
Quote:It's so impressive nice physics that you got over there
I agree, the driving is very satisfactory and a nice addition to the engine.
Looking forward to the new game!
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| 04-16-2013 01:45 AM |
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SamerK
Member
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RE: New SimpleVehicle class
very smooth physics, another great addition to EE.
in the video (0.38) I liked how smoothly the vehicle drifted and entered the gate .
Many Thanks..
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| 10-09-2013 03:12 PM |
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