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Ford Mustang Bullet

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Atrax:

--- Quote from: ZeosPantera on June 10, 2013, 12:34:27 am ---OK.. My game is working JUST ENOUGH to tweek physics on cars.

Here is what I got for the mustang after 20 minutes.


--- Code: ---//vehicle script file
//see http://xtrac.outerra.com/index.fcgi/wiki/vehicle for example and documentation

//invoked only the first time the model is loaded, or upon reload
function init_chassis()
{
    var wheelparam = {
    radius: 0.35,
    width: 0.15,
    suspension_max: 0.10,
    suspension_min: -0.15,
    suspension_stiffness: 25.1,
    damping_compression: 0.15,
    damping_relaxation: 0.09,
    slip: 0.60,
    slip_lateral_coef: 1.5,
    roll_influence: 0.1
  };
     
    var wheelparam_Rear = {
    radius: 0.34,
    width: 0.2,
    suspension_max: 0.10,
    suspension_min: -0.12,
    suspension_stiffness: 18.4,
    damping_compression: 0.12,
    damping_relaxation: 0.08,
    slip: 0.65,
    slip_lateral_coef: 1.2,
    roll_influence: 0.1
  };
   
    this.add_wheel('wheel_FR',wheelparam);
    this.add_wheel('wheel_FL',wheelparam);
    this.add_wheel('wheel_RR',wheelparam_Rear);
    this.add_wheel('wheel_RL',wheelparam_Rear);
 
    this.load_sound("Mustang start.ogg"); //startup
    this.load_sound("Mustang idle.ogg"); //idle
    this.load_sound("Mustang shutdown.ogg");    //off
    this.add_sound_emitter("wheel_FL");
 
    return {mass:1109, steering:2.0, steering_ecf:10000, centering: 1.5, centering_ecf: 10, com:{y:-0.10, x:0.0, z:-0.1}};
}
//invoked for each new instance of the vehicle
function init_vehicle(){
  this.set_fps_camera_pos({y:-0.8, x:-0.32, z:0.8});
  this.geom = this.get_geomob(0)
  this.swheel = this.geom.get_joint("steering_wheel");

//invoked when engine starts or stops
  this.snd = this.sound();
  this.snd.set_ref_distance(0, 9.0);

  this.started = 0;
}

function engine(start)
{
  if(start) {
    this.started=1;
    this.snd.play(0, 0, false, false);
  }
  else {
    this.started=0;
    this.snd.play_sound(0, 2);
  }
}

const EF = 12000.0;
const BF = 5000.0;
const maxkmh = 343; 
const forceloss = EF / (0.2*maxkmh + 1);



//invoked each frame to handle the inputs and animate the model
function update_frame(dt, engine, brake, steering)
{
  var kmh = this.speed()*3.6;
  var redux = engine>=0 ? 0.2 : 0.6;
  var esign = engine<0 ? -1 : 1;
  engine = EF*Math.abs(engine);
  var force = (esign>0) == (kmh>=0)
        ? engine/(redux*Math.abs(kmh) + 1)
        : engine;
  force -= forceloss;
  force = Math.max(0.0, Math.min(force, engine));
  engine = esign*force;
  brake *= BF;
 
  steering *= 0.75;
    this.steer(-2, steering);

var steerAngle = steering *= 10.05;
this.geom.rotate_joint_orig(this.swheel, steerAngle, {x:0,y:-1,z:0});
 
 
  this.wheel_force(-1, engine);
  this.wheel_brake(-1, brake);
 
  if(this.started==1 && !this.snd.is_playing(0)) {
    this.started=2;
    this.snd.play(0, 1, true, false);
  }
  else if(this.started==2) {
    var pitch = Math.abs(kmh)/20.0;
    var g = kmh>0 ? Math.floor(pitch) : 0;
    var f = pitch - g;
    f += 0.5*g;
    this.snd.set_pitch(0, 0.75*f + 1.25);
  }
  this.animate_wheels();
}

--- End code ---

Also forgot to mention. The wheels are animated backward.

--- End quote ---


Zeos, could you do this for EvoIX too? I mean manual tranny. I've tried copy pasting it, but it makes my game crash for some reason. lol, yea I'm a noob with these kinda things.

bugsblake:
thanks zeos! handles much better! yh i did see the steering wheel was turning the wrong way! didnt notice the wheel them selfs! i still have to fix the steering wheel pivot anyway! and add the 2 bits that just float there! lol

ZeosPantera:

--- Quote from: Atrax on June 10, 2013, 04:05:48 am ---

Zeos, could you do this for EvoIX too? I mean manual tranny. I've tried copy pasting it, but it makes my game crash for some reason. lol, yea I'm a noob with these kinda things.

--- End quote ---

Tweaking I can do, adding a full manual transmission conversion would be quite a bit harder.

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