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Help with meshes
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Rigs Offline
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Post: #1
Help with meshes
Hi, well, I am trying to figure out meshes, parts, groups and the like, especially selecting them. I can do this with Phys_Hit easily enough, but I am planning a lot of meshes with simple physics if any, but need to gain the hit object and pos of the hit. Sweep seems like the answer, but I'm a bit lost. I edited lesson 14 - Mesh - Armor Rendering as below...with comments where I edited. Thanks, Rigs.

Code:
/******************************************************************************/
class Player
{
   Ball      bounding_ball(0); // bounding ball covering the character
   MeshPtr   body            , // main body mesh
             armor           , // armor     mesh
             pants           , // pants     mesh
             boots           , // boots     mesh
             gauntlets       ; // gauntlets mesh
   CSkeleton cskel           ; // controlled skeleton

   // update
   void update()
   {
      // set skeleton animation
      cskel.clear()
           .animate(UID(3342756396, 1285211226, 524185523, 499551746)  , Time.time()) // animate with "left fist" animation
           .animate(UID(2565101787, 1333856922, 4140992683, 1310585985), Time.time()) // animate with "right fist" animation
           .animate(UID(1746491013, 1251372253, 3930150308, 1129258799), Time.time()) // animate with "walk" animation
           .updateMatrix(MatrixIdentity)
           .updateVelocities();

      // set bounding ball
      if(body)bounding_ball.setAnimated(body->box, cskel);else bounding_ball.set(2, cskel.pos());
   }

   // draw
   void drawPrepare()
   {
      if(Frustum(bounding_ball)) // if player is visible in frustum
      {
         // add the meshes to the draw list
         if(armor    )armor    ->draw(cskel);
         if(pants    )pants    ->draw(cskel);
         if(boots    )boots    ->draw(cskel);
         if(gauntlets)gauntlets->draw(cskel);
         if(body     )body     ->draw(cskel);
      }
   }
   void drawShadow()
   {
      if(Frustum(bounding_ball)) // if player is visible in current shadow frustum
      {
         // add the meshes to the shadow draw list
         if(armor    )armor    ->drawShadow(cskel);
         if(pants    )pants    ->drawShadow(cskel);
         if(boots    )boots    ->drawShadow(cskel);
         if(gauntlets)gauntlets->drawShadow(cskel);
         if(body     )body     ->drawShadow(cskel);
      }
   }

   void createDefault()
   {
      // set meshes
      body     =Game.ObjParamsPtr(UID(2919624831, 1261075521, 753053852, 3651670215))->mesh();
      armor    =Game.ObjParamsPtr(UID(2031909702, 1196392633, 2341974683, 615558807))->mesh();
      pants    =Game.ObjParamsPtr(UID(4099872651, 1316584110, 3048579493, 1166951837))->mesh();
      boots    =Game.ObjParamsPtr(UID(3279260457, 1135538771, 751762862, 1888362313))->mesh();
      gauntlets=Game.ObjParamsPtr(UID(3702527436, 1166112370, 2441684388, 556763633))->mesh();

      // create skeleton and set initial matrixes
      cskel.create(body->skeleton());
   }
}
Player player;

// sweep variables - I added
MeshGroup GR; // not sure how to use ?                                                            
MeshPart  MP; // not sure which to use ?
Mesh      MH; //
Matrix    M;                                                                  
flt       FRAC;                                                                
Vec       POS;                                                                  
int       FACE;                                                                
int       PRT;
int       MSH;          
bool      wasHIT;                                                              

/******************************************************************************/
void InitPre()
{
   EE_INIT();
   //App.flag=APP_MS_EXCLUSIVE;                                               // I commented out to show mouse

   D.ambientPower(0.3).hpRt(true)
    .shadowJitter(true).shadowSoft(1).shadowMapSize(2048)
    .viewFrom(0.005).viewRange(5);

   Cam.yaw  = 2.7;
   Cam.pitch=-0.3;
   Cam.dist = 1.2;
}
/******************************************************************************/
bool Init()
{
   // initialize sky & sun
   Sky.atmospheric();
   Sun.image=UID(1275694243, 1199742097, 1108828586, 1055787228);
   Sun.pos=!Vec(1, 1, 1);
   Sun.light_color=1-D.ambientColor();

   // setup player data
   player.createDefault();
D.full(true);
   if(player.body)Cam.at=player.body->box.center(); // adjust camera to mesh center
   return true;
}
/******************************************************************************/
void Shut()
{
}
/******************************************************************************/
bool Update()
{
   if(Kb.bp(KB_ESC))return false;
   CamHandle(0.01, 100, CAMH_ZOOM|(Ms.b(1)?CAMH_MOVE:CAMH_ROT));

   player.update();
  
   // sweeping - I added
   Vec start(ScreenToPos(Ms.pos(), 0.0));                                        
   Vec end(ScreenToPos(Ms.pos(), 200.0));                                        
   //Vec start(ScreenToPos((0, 0), 0.0));                                            
   //Vec end(ScreenToPos((0, 0), 200.0));                                            
   //if(Sweep(start, end-start, GR, &M, &FRAC, &POS, &FACE, &PRT, &MSH)) wasHIT=true;
   if(Sweep(start, end-start, MP, &M, &FRAC, &POS, &FACE)) wasHIT=true;

   return true;
}
/******************************************************************************/
void Render()
{
   switch(Renderer())
   {
      case RM_PREPARE:
      {
         player.drawPrepare();
        
         // highlighting - I added
         if(wasHIT && Ms.b(0))
         {
            SetHighlight(Color(200, 0, 0, 128));
            MP.draw(player.cskel);
            SetHighlight();
         }
        
      }break;
      case RM_SHADOW : player.drawShadow (); break;
   }
}
void Draw()
{
   Renderer(Render);
  
   // I added text
   D.text(0, 0.9, S+"wasHIT="+wasHIT);                                          
   D.text(0, 0.8, S+"meshPart Name="+MP.name);                                        
   D.text(0, 0.7, S+"hitPOS="+POS);                                              

}
/******************************************************************************/
11-03-2013 10:56 PM
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Rubeus Offline
Member

Post: #2
RE: Help with meshes
Did you look at the Physics\08 - Sweeping tutorial? Its a little different than what you have, but it should shed some light on what you are attempting.
11-03-2013 11:15 PM
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Rigs Offline
Member

Post: #3
RE: Help with meshes
I will/am taking a look at that thanks. I was also looking at PosPointMeshZ, it will make sense before too long. Little kicks in the right direction do help smile
11-03-2013 11:45 PM
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