How do you add a motorbike in SDL?

Does anyone know how to add a motorbike to SDL source Code? I tried to add it and I got errors. I need someone to explain how to add a motorbike to SDL in easy step by step instructions. The original source code tutorial is hard to follow.

Ask Brian if he knows Max' email address. Max is in Germany and made a motorbike for some of the episodes of Sensenman or Reaperman. However, I doubt if that's a SDL mod.

EDIT: It took me over 20 minutes to find his email, but I sent it to you.

I know, that you know adding motorbike for SDL:

WL_DEF.H:

gamestate structure

Code:

   boolean mbike;   // is the player riding on the mbike
    short motospeed;   // what's the bike's speed
    boolean left;    // are you turning left
    boolean right;   // are you turning right

WL_AGENT.CPP:

ControlMovement (replace this):

Code:

void ControlMovement (objtype *ob)
{
    int32_t oldx,oldy;
    int     angle;
    int     angleunits;

    thrustspeed = 0;

    oldx = player->x;
    oldy = player->y;

    if(buttonstate[bt_strafeleft])
    {
        angle = ob->angle + ANGLES/4;
        if(angle >= ANGLES)
            angle -= ANGLES;
        if(buttonstate[bt_run])
            Thrust(angle, RUNMOVE * MOVESCALE * tics);
        else
            Thrust(angle, BASEMOVE * MOVESCALE * tics);
    }

    if(buttonstate[bt_straferight])
    {
        angle = ob->angle - ANGLES/4;
        if(angle < 0)
            angle += ANGLES;
        if(buttonstate[bt_run])
            Thrust(angle, RUNMOVE * MOVESCALE * tics );
        else
            Thrust(angle, BASEMOVE * MOVESCALE * tics);
    }

    //
    // side to side move
    //
    if (gamestate.mbike!=true)      // no strafe on a mbike
    {
    if (buttonstate[bt_strafe])
    {
        //
        // strafing
        //
        //
        if (controlx > 0)
        {
            angle = ob->angle - ANGLES/4;
            if (angle < 0)
                angle += ANGLES;
            Thrust (angle,controlx*MOVESCALE);      // move to left
        }
        else if (controlx < 0)
        {
            angle = ob->angle + ANGLES/4;
            if (angle >= ANGLES)
                angle -= ANGLES;
            Thrust (angle,-controlx*MOVESCALE);     // move to right
        }
    }
    else
    {
        //
        // not strafing
        //
        anglefrac += controlx;
        angleunits = anglefrac/ANGLESCALE;
        anglefrac -= angleunits*ANGLESCALE;
        ob->angle -= angleunits;

        if (ob->angle >= ANGLES)
            ob->angle -= ANGLES;
        if (ob->angle < 0)
            ob->angle += ANGLES;

    }

    //
    // forward/backwards move
    //
    if (controly < 0)
    {
        Thrust (ob->angle,-controly*MOVESCALE); // move forwards
    }
    else if (controly > 0)
    {
        angle = ob->angle + ANGLES/2;
        if (angle >= ANGLES)
            angle -= ANGLES;
        Thrust (angle,controly*BACKMOVESCALE);          // move backwards
    }

}
   else
   {
      if (controlx > 0)      // this section sets left & rigth to true/false depending on the keys that player presses
      {
      gamestate.left=true;
      gamestate.right=false;
      }
      else if (controlx < 0)
      {
      gamestate.left=false;
      gamestate.right=true;
      }
      else
      {
      gamestate.left=false;
      gamestate.right=false;
      }

      anglefrac += controlx*.5;      // turning - you may adjust this line and/or add some gamestate.motospeed dependencies
      angleunits = anglefrac/ANGLESCALE;
      anglefrac -= angleunits*ANGLESCALE;
      ob->angle -= angleunits;

      if (ob->angle >= ANGLES)
         ob->angle -= ANGLES;
      if (ob->angle < 0)
         ob->angle += ANGLES;

    if (controly > 0 )               // brakes
   {
   if (gamestate.motospeed>controly)
   gamestate.motospeed-=controly*2;
   else if (gamestate.motospeed>=0-controly)
   gamestate.motospeed=0;
   else
   gamestate.motospeed+=controly*2;    
//   SD_PlaySound (DIESND); //use some BRAKESND instead, this may cause problems, not well tested!!!
   }
    else if (controly < 0)            // accelerate
   {
    if (gamestate.motospeed<30000)
    gamestate.motospeed-=controly*.5;
    else
    gamestate.motospeed=30000;
    SD_PlaySound (HITWALLSND); //use some ENGINESND instead, this may cause problems, not well tested!!!
   }
    else   // no keys pressed - bike slowly reduces it's speed
   {
   if (gamestate.motospeed<0)
   gamestate.motospeed+=10;
   else if (gamestate.motospeed>0)
   gamestate.motospeed-=1;
   }
   Thrust (ob->angle,gamestate.motospeed);
    }

    if (gamestate.victoryflag)              // watching the BJ actor
        return;
}

TryMove

Code:

  if (gamestate.mbike==true)
   {
      if (gamestate.motospeed<=200)      // very slow or backwards movement - just set the speed to 0
      gamestate.motospeed=0;
      else      // if we're riding faster... (you should add crash sound here, probably something like the sound stuff just below this "+" section. I didn't add it cause I have some problems with sound in Wolf and can't test it)
      {
         if (gamestate.motospeed>=5000) // take damage if you're driving really fast, damage depends on the speed
    {
         TakeDamage (gamestate.motospeed/500, NULL);
      SD_PlaySound (EVASND); // use some CRASHSND of your creation instead
    }
      gamestate.motospeed=-0.3*gamestate.motospeed; // bounce
      }      // so that you won't get into a wall
      ob->x=basex;
      ob->y=basey;
      return;
    }

T_Player

Code:

if (gamestate.mbike!=true) {

WL_DRAW.CPP:

DrawPlayerWeapon

Code:

    if (gamestate.mbike == true)
   {
   if (gamestate.left == true)
   {
    SimpleScaleShape(viewwidth/2,SPR_CHAINATK1,viewheight+1); // change SPR_* here and below to your own ones
    return;
   }
   else if (gamestate.right == true)
   {
    SimpleScaleShape(viewwidth/2,SPR_KNIFEATK2,viewheight+1);
    return;
   }
    SimpleScaleShape(viewwidth/2,SPR_PISTOLATK3,viewheight+1);
    return;
   }

I test and work for Me. If not work then you write for Me.

Enjoy!