Hello fellow OpenGL programmers! I have quite a dilemma...I am trying to enact the game of life onto a cube. It has no problem displaying the first state of the game of life, however when i tries to process the next state, it freezes up and doesn't display the next state. Yes, I have checked for infinite loops and tested the algorithm outside of opengl. Have I reached some limit for openGL to handle a 3-dimensional array of integers? What can cause this type of freeze? Here's part of the code: int DrawGLScene(GLvoid) { glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT); glLoadIdentity(); glLoadIdentity(); glTranslatef(x,y,z); int counta, countb, countc, state; GLfloat xheight = 0.0f, yheight = 0.0f; glRotatef(xrot,1.0f,0.0f,0.0f); glRotatef(yrot,0.0f,1.0f,0.0f); for(countb = 0; countb < 10; countb++) { yheight = 0.0f; for(countc = 0; countc < 10; countc++) { state = DisplayCube[0][countb][countc]; glBindTexture(GL_TEXTURE_2D, texture[state]); glBegin(GL_QUADS); glTexCoord2f(0.0f, 0.0f); glVertex3f((xheight-5.0f), (5.0f - yheight), 0.0f); glTexCoord2f(1.0f, 0.0f); glVertex3f((xheight-4.0f), (5.0f - yheight), 0.0f); glTexCoord2f(1.0f, 1.0f); glVertex3f((xheight-4.0f), (4.0f - yheight), 0.0f); glTexCoord2f(0.0f, 1.0f); glVertex3f((xheight-5.0f), (4.0f - yheight), 0.0f); glEnd(); yheight = yheight + 1.0f; } xheight = xheight + 1.0f; } xrot+=xspeed; yrot+=yspeed; for(int delay = 0; delay < 1000000000; delay++); getnextState(); return TRUE; } void clearcubes() { int counta, countb, countc; for(counta = 0; counta < 6; counta++) for(countb = 0; countb < 10; countb++) for(countc = 0; countc < 10; countc++) DisplayCube[counta][countb][countc] = 0; for(counta = 0; counta < 6; counta++) for(countb = 0; countb < 12; countb++) for(countc = 0; countc < 12; countc++) statecube[counta][countb][countc] = 0; return; } void seedcube() { int counta, countb, countc; srand(time(NULL)); // clearcubes(); for(counta = 0; counta < 6; counta++) for(countb = 0; countb < 10; countb++) for(countc = 0; countc < 10; countc++) DisplayCube[counta][countb][countc] = rulesseed(); transfer(); return; } int rulesseed() { if(rand()%5 ==1 || rand()%5 == 2) { if(rand()%5==1) if(rand()%5==1) return 3; //seeds sick(3) neighbors else return 2; //seeds infected(2) neighbors return 1; //seeds live(1) neighbors } return 0; //seeds empty(0) neighbor } void transfer() { int counta, countb, countc; for(counta = 0; counta < 6; counta++) for(countb = 0; countb < 10; countb++) for(countc = 0; countc < 10; countc++) { statecube[counta][countb + 1][countc+1] = DisplayCube[counta][countb][countc]; } seedpadding(); } void seedpadding() { padfrontback(0); padfrontback(5); padtopbottom(1); padtopbottom(4); padleftright(2); padleftright(3); } void padfrontback(int side) { int count, num; if(side == 0) num = 11; else if(side == 5) num = 0; else return; for(count = 0; count < 11; count++) { statecube[1][count][num] = statecube[side][count][1]; statecube[2][count][num] = statecube[side][1][count]; statecube[3][count][num] = statecube[side][10][count]; statecube[4][count][num] = statecube[side][count][10]; } } void padtopbottom(int side) { int count, numa, numb; if(side == 1) { numa = 0; numb = 11; } else if(side == 4) { numa = 11; numb = 0; } else return; for(count = 0; count < 11; count++) { statecube[0][count][numa] = statecube[side][count][10]; statecube[2][numb][count] = statecube[side][1][count]; statecube[3][numb][count] = statecube[side][10][count]; statecube[5][count][numa] = statecube[side][count][1]; } } void padleftright(int side) { int count, num; if(side == 2) num = 0; else if(side == 3) num = 11; else return; for(count = 0; count < 11; count++) { statecube[0][num][count] = statecube[side][count][10]; statecube[1][num][count] = statecube[side][10][count]; statecube[4][num][count] = statecube[side][1][count]; statecube[5][num][count] = statecube[side][count][1]; } } void getnextState() { int counta, countb, countc; for(counta = 0; counta < 6; counta++) for(countb = 1; countb < 12; countb++) for(countc = 1; countc < 12; countc++) { DisplayCube[counta][countb - 1][countc - 1] = nextstate(counta,countb, countc); } transfer(); return; } int nextstate(int side, int column, int row) { int counta, countb, state, live = 0, sick = 0; for(counta = column -1; counta <= column+1; counta++) { for(countb = row -1; countb <= row + 1; countb++) { state = statecube[side][counta][countb]; if(state != 0 && state != 5 && state != 6) live++; if(state == 3 || state == 4) sick++; } } state = statecube[side][column][row]; switch(state) { case 0: if(live == 3) return 1; //have 3 neighbor, new life is born return 0; case 1: live--; //can't count yourself as neighbor if(live < 2 || live >=4) return 5; //dies from either loniless or crowding if(sick >= 2 || rand()%20 ==1) return 2; //live becomes infected from 2 sick neighbor or pop-up return 1; //no change case 2: return 3; //if cell infected, becomes sick despite neightbors case 3: live--; sick--; if(live >= 3 && sick == 0) return 1; //the village cures the sick return 4; //not cured and remains case 4: live--; sick--; if(live >= 3 && sick == 0) return 1; return 5; //if not cured, then the cell dies case 5: if(live >= 4) return 0; //grave is plowed for land due to crowding return 6; //remains a grave case 6: return 0; //becomes a land no matter what }; } [Edited by - jackalman on April 26, 2005 6:40:46 PM]

Not a cube but a 10X10 MATRIX?

Also where are your 1440 textures loaded? maybe I'm missing the point here?

Trager

Well, right now im just testing ONE side of the cube to see if it works.
As for textures, they work just fine with the cube face.

The point is I want to know if my algorithm is causing the openGL window to freeze, because the source is apprantly coming from my getnextState() function and would like some advice from the experience openGL programmers on the forum.

I haven't read through it, but I'm so often put off when people paste large chunks of code like that & give you unspecific problems.
It sounds to me like it's time you learnt how to debug.
You need to debug & find the exact point that the program fails or you need to locate the loop by means of placed breakpoints & frequent checking.
Output to a console or other developer window of important info like program location should also help you locate the cause of your problem. I can't be specific without knowing the ide you are using, but then I'm not upto date with most popular ides anyway.
Once you learn to help yourself it will be a great weight off your shoulders

Secondly I would check your nextstate function. Its best you rewrite it.