Wierd problem (well the way i see it...) with floats

[Ghoti]

Hi folks,

here is the problem: I have this struct:

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typedef struct { float			u, v; 
					 int			color;
					 float			x, y, z; } ObjVertexB;

typedef struct { float u, v;	} ObjTexCoord;	// texture coordinates
	

then i have this function: (not important code is left out to save space)

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ObjTexCoord		TexCoords[ iNumberOfTexCoords ];

....some code


for &#40;j=0;j<iNumberOfFaces-1; j++&#41;&#123;
				if &#40;FacesDone&#91;j&#93; == TRUE&#41; &#123;&#125;
				else &#123;
					if &#40;CompareFaces&#40;&ComparedFace, &Faces&#91; j &#93;&#41; == 2&#41; &#123;
						FacesDone&#91;j&#93; = TRUE;
						ComparedFace = Faces&#91; j &#93;;
						tmpObj->Strips&#91;iStripNr&#93;.Vertices&#91;j&#93;.u = TexCoords&#91;0&#93;.u;
						tmpObj->Strips&#91;iStripNr&#93;.Vertices&#91;j&#93;.v = TexCoords&#91;0&#93;.v;
						
						tmpObj->Strips&#91;iStripNr&#93;.Vertices&#91;j&#93;.color = 0xffff0000;
						tmpObj->Strips&#91;iStripNr&#93;.Vertices&#91;j&#93;.x = Vertices&#91;iNewCoord&#93;.x;
						tmpObj->Strips&#91;iStripNr&#93;.Vertices&#91;j&#93;.y = Vertices&#91;iNewCoord&#93;.y;
						tmpObj->Strips&#91;iStripNr&#93;.Vertices&#91;j&#93;.z = Vertices&#91;iNewCoord&#93;.z;
						
						VerticesCount++;
						j = 0;
					&#125;
				&#125;
			&#125;

The first u value of the vertices is filled and no crash occurs, however the .v crashes. If i comment it out so that only the u is filled and the program doesn't crash.

now the TexCoords is filled with this code:

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if ((fp = fopen(filename, "rb")) == NULL) { iNumberOfGroups = -1; return; }
		while(!feof(fp))
		{
			fgets(ReadBuffer, 256, fp);
			if (strncmp("g default", ReadBuffer, 9) == 0 )
			{
				if (iNumberOfGroups == 0) {

				}
				else {
					iNumberOfGroups++;
				}
			}
			else if (strncmp("v ", ReadBuffer, 2) == 0 )
			{
				sscanf((ReadBuffer+2), "%f%f%f",&Vertices[ vc ].x, &Vertices[ vc ].y, &Vertices[ vc ].z); 
				vc++;
			}
			else if (strncmp("vt ", ReadBuffer, 3) == 0 )
			{
				sscanf((ReadBuffer+3), "%f%f",&TexCoords[ tc ].u, &TexCoords[ tc ].v); 
				tc++;
			}

			else if (strncmp("f ", ReadBuffer, 2) == 0 )
			{
				
				char *pSplitString = NULL;
				int Waste;
				i=0;
				pSplitString = strtok((ReadBuffer+2)," \t\n");

				do {

					sscanf((pSplitString), "%d/%d/%d",&Faces[ fc ].vertices[ i ], &Faces[ fc ].textc[ i ],&Waste); 
					Faces[ fc ].textc[ i ] -= 1;		// 1 down because the obj file objects start at 1 and arrays start at 0
					Faces[ fc ].vertices[ i ] -= 1;
					pSplitString = strtok(NULL," \t\n");
					i += 1;
				}
				while( pSplitString );
				
				
				
				
				fc++;
			}
		}
		fclose(fp);

why does it crash when i fill the v value and not the u value?

i hope i gave enough info otherwise please ask so i can provide

thanks in advance

[ReKleSS]

Could you use psplink or something to check what the error is? I'm guessing bus error, but better not to waste time on the wrong problem...

Anyway, how is tmpObj declared?

[Raphael]

Anyway, how is tmpObj declared?

Plus, how is it allocated.

[Ghoti]

Hi,

first of all in psplink i get no error. It doesn't crash and renders the object. (all wrong but thats another thing to fix later on.)

however when i run it on my psp it crashes... why is this?

anyway for your questions:

i declare:

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MeshB Level;
sprintf(sBuffer, "Objects/DesertHouse1.obj");
		LoadObject(sBuffer, &Level);

as you can see i pass it to the function in which the error occurs

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void LoadObject(const char *filename, MeshB *tmpObj);

meshb struct:

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typedef struct { float			u, v; 
					 int			color;
					 float			x, y, z; } ObjVertexB;	// vertex to render

	typedef struct { unsigned int	iNumberOfVertices;
					 ObjVertexB		*Vertices; } ObjStrip;

	typedef struct _MeshB {	unsigned int	iNumberOfStrips;
							ObjStrip		*Strips; } MeshB;

As for the last question i don't know