User mods, screenshots & videos > Tracked vehicles

Panther G rigged!

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murkz:





Snorri's amazing skins really do look superb in Outerra



--- Code: ---
//vehicle script file
//see http://xtrac.outerra.com/index.fcgi/wiki/vehicle for example and documentation
var turret,mantlet,barrel;

const MaxTurretXSpeed = 10; //deg/s
const MaxTurretYSpeed = 20; //deg/s
const MaxTurretXAccel = 120;//deg/s^2
const MaxTurretYAccel = 160;//deg/s^2
const MinTurretAngle = -8;  //in deg  gun depression
const TurretAngleSpan = 18; //in deg  gun elevation
const TurningBoost = 0.4;   //boost coefficient to help with turning at speed
const TurnForceCoef = 0.8;  //portion of engine force for neutral turns
const RollingFriction = 1000;//force that needs to be overcome to get wheels turning
const EF = 25000.0;         //engine force
const BF = 20000.0;         //braking force
const EFr = 0.02;           //engine force reduction coef with speed
const maxkmh = 40;          //top speed


function radians(v){
  return v*Math.PI/180.0;
}


//invoked only the first time the model is loaded, or upon reload
function init_chassis(){
  var wheelparam = {
    radius: 0.50,
    width: 0.20,
    suspension_max: 0.25,
    suspension_min: -0.25,
    //ride height   
    suspension_stiffness: 3.9,

    damping_compression: 0.5,
    damping_relaxation: 0.4,
    slip: 4,
    slip_lateral_coef: 0.3,
    roll_influence: 0.1
  //rotation: -1
  };
  this.add_wheel('wheel1', wheelparam);
  this.add_wheel('wheel2', wheelparam);
  this.add_wheel('wheel3', wheelparam);
  this.add_wheel('wheel4', wheelparam);
  this.add_wheel('wheel5', wheelparam);
  this.add_wheel('wheel6', wheelparam);
  this.add_wheel('wheel7', wheelparam);
  this.add_wheel('wheel8', wheelparam); 
  this.add_wheel('wheel9', wheelparam);
  this.add_wheel('wheel10', wheelparam);
  this.add_wheel('wheel11', wheelparam);
  this.add_wheel('wheel12', wheelparam);
  this.add_wheel('wheel13', wheelparam);
  this.add_wheel('wheel14', wheelparam);
  this.add_wheel('wheel15', wheelparam);
  this.add_wheel('wheel16', wheelparam);
 
  this.load_sound("panther_eng_starter.ogg");
  this.load_sound("panther_trans_01.ogg");
  this.add_sound_emitter("turret");
 
  var geom = this.get_geomob(0);
  turret = geom.get_joint('turret');
  mantlet = geom.get_joint('Mantlet');
  barrel = geom.get_joint('barrel');
 
  return {mass:11500, com:{z:0.5,y:0.5}, steering:2.0, steering_ecf:60, centering: 100, centering_ecf:20,
    turretx_speed: radians(MaxTurretXSpeed),
    turrety_speed: MaxTurretYSpeed/TurretAngleSpan,
    turretx_accel: radians(MaxTurretXAccel),
    turrety_accel: MaxTurretYAccel/TurretAngleSpan,
  };
}

//invoked for each new instance of the vehicle
function init_vehicle(){
  this.set_fps_camera_pos({x:-0.5,y:0.00,z:3.40});
  this.snd = this.sound();
  this.geom = this.get_geomob(0);
  this.turx = this.tury = 0.0;
}

//invoked when engine starts or stops
function engine(start){
  if(start){
    this.snd.play(0, 0, false, false);
    this.snd.play(0, 1, true, true);
  }
  else
    this.snd.stop(0);
  this.started = start;
}

//handle extra actions
function action(k,v,dt)
{
  switch(k){
  case ATurretX: this.geom.rotate_joint_orig(turret, v, {x:0,y:0,z:-1}); break;
  case ATurretY: this.geom.rotate_joint_orig(mantlet, radians(TurretAngleSpan*0.5*(1+v)+MinTurretAngle), {x:1,y:0,z:0}); break;
  }
}

const forceloss = 1.0 / (EFr*maxkmh + 1);

//invoked each frame to handle the inputs and animate the model
function update_frame(dt, engine, brake, steering)
{
  var kmh = this.max_tire_speed()*3.6;
 
  //reduce engine force with speed (hack)
  var esign = engine<0 ? -1 : 1;
  engine = EF*Math.abs(engine);
  var force = (esign>0) == (kmh>=0)
        ? 1.0/(EFr*Math.abs(kmh) + 1)
        : 1.0;
  force -= forceloss;
  force = esign*Math.max(0.0, Math.min(force, 1.0));
  engine *= force;
   
  this.snd.set_pitch(0, 1+0.01*kmh);
   
  //if(steering!=0) engine *= 1.5;
  //var el = steering>0 ? 0 : engine;
  //var er = steering<0 ? 0 : engine;
  var df = EF*TurnForceCoef*force;
  var el=engine,er=engine;
  var spd = 1 + TurningBoost*this.speed();
  if(this.started){
    if(steering>0){
      el-=spd*df; er+=df;
    }
    else if(steering<0){
      er-=spd*df; el+=df;
    }
  }

  this.wheel_force(-2, el);
  this.wheel_force(-3, er);
   
  brake *= BF;
  brake += RollingFriction;

  this.wheel_brake(-1, brake);

  //this.log_inf("L:"+el+" R:"+er+"   B:"+brake+"  SPD:"+kmh);
 
  //this.geom.rotate_joint_orig(turret, this.turx, {x:0,y:0,z:-1});
  //this.geom.rotate_joint_orig(mantlet, this.tury, {x:1,y:0,z:0});

  this.animate_wheels();
}


--- End code ---

I would like to thank cameni for the code to make the turret turn, the gun elevate and the tank perform more realistically.

In the model in max, I have left roads wheels as odd numbers and right road wheels as even numbers. The barrel has to be a child of the mantlet and the mantlet a child of the turret.

The pivot for the barrel needs to be moved to the turret end, so it will raise up/down.



http://farm9.staticflickr.com/8545/8708330090_dd69a09077_o.jpg larger pic.



Tiger 1 model by Vexman and skin by Snorri.


Jeff

M7:
Super nice!!!!

Foxiol:
That looks incredible with those textures. Nice job.

ZeosPantera:
I will kill anyone you want for that Tiger 1 with a movable turret..

{anyone}

PytonPago:

--- Quote from: ZeosPantera on May 05, 2013, 12:54:29 am ---I will kill anyone you want for that Tiger 1 with a movable turret..

{anyone}

--- End quote ---


You're better start to train like Leon then. And buying a nice plant to moisture every day.   ;D  ... fine work ! ... will definitely take some of it for my work later.  ;)

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