Path: chuka.playstation.co.uk!scea!greg_labrec@interactive.sony.com
From: "Benjamen Siroshton" <ben@triax.com>
Newsgroups: scea.yaroze.programming.3d_graphics
Subject: Multiple 3D Objects with 1 Model
Date: 26 Oct 1997 03:26:15 GMT
Organization: SCEA News Server
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Message-ID: <01bce1bf$6e7fbe80$99b664ce@jack-shit>
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How can I have multiple objects with the same model. Heres some code.
Please tell me what I am doing wrong.. Thanks in Advance.

Some of this code I pulled from a demo or somewhere, so if it looks
familiar .. thanks for the code. =)

This code only will show me ONE object.. ???

Benjamen Siroshton


/* SOME INFO ON VARIABLES */

typedef struct{
	GsDOBJ2 object; // Object Handler
	int x, y ,z;	// Translation
	int rx, ry, rz; // Rotation
	long sx, sy, sz;// Scale
	int RotSpeed;	// Rotation Speed
	int Visible;	// Is Visible?
} Object;

#define NumOfPlanes 10
Object Plane[NumOfPlanes];

/* INITIALIZE THE MODEL(s) */

u_long *dop;
GsDOBJ2 *objp;

   dop = (u_long *) _1P2TRI_ADDRESS; /* the top address of modeling data */
   dop++;                                           /* header skip */

   GsMapModelingData(dop); /* map the modeling data to real address */
   dop++;

   Objnum = *dop;                      /* get the number of objects */
   dop++;                 /* inc the address to link to the handler */

   for(lp=0;lp<NumOfPlanes;lp++){
	   Plane[lp].x = 0;
	   Plane[lp].y = 0;
	   Plane[lp].z = 0;
	   Plane[lp].rx = 3796;
	   Plane[lp].ry = 0;
	   Plane[lp].rz = 2496;
               // --- increasingly make the next object smaller
	   Plane[lp].sx = 3310-(lp*30);
	   Plane[lp].sy = 3760-(lp*30);
	   Plane[lp].sz = 3850-(lp*30);
	   // ---
	   Plane[lp].RotSpeed = 30-lp;
	   Plane[lp].Visible = TRUE;
   
	   /* Link TMD data and Object Handler */
	   GsLinkObject4((u_long)dop, &Plane[lp].object, 0);

	   Plane[lp].object.coord2 = &DWorld;
	   Plane[lp].object.attribute = 0;
   } // end of FOR loop



/* IN THE MAIN HERE IS HOW I INSERT IT INTO THE ORDERING TABLE */

for(lp=0;lp<NumOfPlanes;lp++){
	if (Plane[lp].Visible){
		transformMatrix = GsIDMATRIX;
		setVector(&rotate, Plane[lp].rx, Plane[lp].ry, Plane[lp].rz);
		RotMatrix(&rotate, &transformMatrix);
		setVector(&scale, Plane[lp].sx,Plane[lp].sy,Plane[lp].sz);
		ScaleMatrix(&transformMatrix, &scale);
	  
		Plane[lp].object.coord2->coord = transformMatrix;	// set transformation
on object 
		Plane[lp].object.coord2->flg = 0;                  // flag object as
moved
	  
		GsSortObject4(&Plane[lp].object, &ot[activeBuf], 14 - OTLENGTH,
getScratchAddr(0));
	} // end of if (IsVisible)
} // end of FOR loop