I just cannot figure out how to get the game to alternate turns. it is designed
ID: 3634712 • Letter: I
Question
I just cannot figure out how to get the game to alternate turns. it is designed to be a 2 player game. the problem is once either an x or an o is placed it will only continue to place the x or the o.please show me how to do the rest here is my code://#include <windows.h> // This header file will be needed for some windows compilers
//#include <GL/gl.h> // gl.h and glu.h also maybe needed for some compilers
//#include <GL/glu.h>
#include <GL/glut.h> // glut (gl utility toolkit) basic windows functions, keyboard, mouse.
#include <stdio.h> // standard (I/O library)
#include <stdlib.h> // standard library (set of standard C functions
#include <math.h> // Math library (Higher math functions )
#include <string.h>
// lighting
GLfloat LightAmbient[]= { 0.5f, 0.5f, 0.5f, 1.0f };
GLfloat LightDiffuse[]= { 0.5f, 0.5f, 0.5f, 1.0f };
GLfloat LightPosition[]= { 5.0f, 25.0f, 5.0f, 1.0f };
GLfloat mat_specular[] = { 1.0, 1.0, 1.0, 1.0 };
// mouse variables: Win = windows size, mouse = mouse position
int mouse_x, mouse_y, Win_x, Win_y, object_select;
// state variables for Orho/Perspective view, lighting on/off
static int view_state = 0, light_state = 0;
// Use to spin X's and O's
int spin, spinboxes;
// Win = 1 player wins, -1 player2 wins, 2 tie.
// player or player2; 1 = X, -1 = O
// start_game indicates that game is in play.
int player, player2, win, start_game;
// alingment of boxes in which one can win
// We have 8 posiblities, 3 accross, 3 down and 2 diagnally
//
// 0 | 1 | 2
// 3 | 4 | 5
// 6 | 7 | 8
//
// row, colunm, diagnal information
static int box[8][3] = {{0, 1, 2}, {3, 4, 5}, {6, 7, 8}, {0, 3, 6},
{1, 4, 7}, {2, 5, 8}, {0, 4, 8}, {2, 4, 6}};
// Storage for our game board
// 1 = X's, -1 = O's, 0 = open space
int box_map[9];
// center x,y location for each box
int object_map[9][2] = {{-6,6},{0,6},{6,6},{-6,0},{0,0},{6,0},{-6,-6},{0,-6},{6,-6}};
// quadric pointer for build our X
GLUquadricObj *Cylinder;
// Begin game routine
void init_game(void)
{
int i;
// Clear map for new game
for( i = 0; i < 9; i++)
{
box_map[i] = 0;
}
// Set 0 for no winner
win = 0;
start_game = 1;
}
// Check for three in a row/colunm/diagnal
// returns 1 if there is a winner
int check_move( void )
{
int i, t = 0;
//Check for three in a row
for( i = 0; i < 8; i++)
{
t = box_map[box[i][0]] + box_map[box[i][1]] + box_map[box[i][2]];
if ( (t == 3) || ( t == -3) )
{
spinboxes = i;
return( 1 );
}
}
t = 0;
// check for tie
for( i = 0; i < 8; i++)
{
t = t + abs(box_map[box[i][0]]) + abs( box_map[box[i][1]]) + abs( box_map[box[i][2]]);
}
if ( t == 24 ) return( 2 );
return( 0 );
}
// I use this to put text on the screen
void Sprint( int x, int y, char *st)
{
int l,i;
l=strlen( st ); // see how many characters are in text string.
glRasterPos2i( x, y); // location to start printing text
for( i=0; i < l; i++) // loop until i is greater then l
{
glutBitmapCharacter(GLUT_BITMAP_TIMES_ROMAN_24, st[i]); // Print a character on the screen
}
}
// This creates the spinning of the cube.
static void TimeEvent(int te)
{
spin++; // increase cube rotation by 1
if (spin > 360) spin = 0; // if over 360 degress, start back at zero.
glutPostRedisplay(); // Update screen with new rotation data
glutTimerFunc( 10, TimeEvent, 1); // Reset our timmer.
}
// Setup our Opengl world, called once at startup.
void init(void)
{
glClearColor (1.0, 1.0, 1.0, 0.0); // When screen cleared, use black.
glShadeModel (GL_SMOOTH); // How the object color will be rendered smooth or flat
glEnable(GL_DEPTH_TEST); // Check depth when rendering
// Lighting is added to scene
glLightfv(GL_LIGHT1 ,GL_AMBIENT, LightAmbient);
glLightfv(GL_LIGHT1 ,GL_DIFFUSE, LightDiffuse);
glLightfv(GL_LIGHT1 ,GL_POSITION, LightPosition);
glEnable(GL_LIGHTING); // Turn on lighting
glEnable(GL_LIGHT1); // Turn on light 1
start_game = 0;
win = 0;
// Create a new quadric
Cylinder = gluNewQuadric();
gluQuadricDrawStyle( Cylinder, GLU_FILL );
gluQuadricNormals( Cylinder, GLU_SMOOTH );
gluQuadricOrientation( Cylinder, GLU_OUTSIDE );
}
void Draw_O(int x, int y, int z, int a)
{
glPushMatrix();
glTranslatef(x, y, z);
glRotatef(a, 1, 0, 0);
glutSolidTorus(0.5, 2.0, 8, 16);
glPopMatrix();
}
void Draw_X(int x, int y, int z, int a)
{
glPushMatrix();
glTranslatef(x, y, z);
glPushMatrix();
glRotatef(a, 1, 0, 0);
glRotatef(90, 0, 1, 0);
glRotatef(45, 1, 0, 0);
glTranslatef( 0, 0, -3);
gluCylinder( Cylinder, 0.5, 0.5, 6, 16, 16);
//glutSolidCone( 2.5, 3.0, 16, 8 );
glPopMatrix();
glPushMatrix();
glRotatef(a, 1, 0, 0);
glRotatef(90, 0, 1, 0);
glRotatef(315, 1, 0, 0);
glTranslatef( 0, 0, -3);
gluCylinder( Cylinder, 0.5, 0.5, 6, 16, 16);
//glutSolidCone( 2.5, 3.0, 16, 8 );
glPopMatrix();
glPopMatrix();
}
// Draw our world
void display(void)
{
char txt[30];
int ix, iy;
int i;
int j;
glClear (GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT); //Clear the screen
glMatrixMode (GL_PROJECTION); // Tell opengl that we are doing project matrix work
glLoadIdentity(); // Clear the matrix
glOrtho(-9.0, 9.0, -9.0, 9.0, 0.0, 30.0); // Setup an Ortho view
glMatrixMode(GL_MODELVIEW); // Tell opengl that we are doing model matrix work. (drawing)
glLoadIdentity(); // Clear the model matrix
glDisable(GL_COLOR_MATERIAL);
glDisable(GL_LIGHTING);
glColor3f(0.0, 0.0, 1.0);
if ( start_game == 0 )
{
Sprint(-2, 0, "Tic Tac Toe");
Sprint(-3, -1, "To Start press");
Sprint(-3, -2, "right button for X's");
Sprint(-3, -3, "and left for O's");
}
if (win == 1) Sprint( -2, 1, "Player 1 Wins");
if (win == -1) Sprint( -2, 1, "Player 2 Wins");
if (win == 2) Sprint( -2, 1, "Tie");
// Setup view, and print view state on screen
if (view_state == 1)
{
glColor3f( 0.0, 0.0, 1.0);
Sprint(-3, 8, "Perspective view");
glMatrixMode (GL_PROJECTION);
glLoadIdentity();
gluPerspective(60, 1, 1, 30);
glMatrixMode(GL_MODELVIEW);
glLoadIdentity();
}else
{
glColor3f( 0.0, 0.0, 1.0);
Sprint(-2, 8, "Ortho view");
}
// Lighting on/off
if (light_state == 1)
{
glDisable(GL_LIGHTING);
glDisable(GL_COLOR_MATERIAL);
}else
{
glEnable(GL_LIGHTING);
glEnable(GL_COLOR_MATERIAL);
}
gluLookAt( 0, 0, 20, 0, 0, 0, 0, 1, 0);
// Draw Grid
for( ix = 0; ix < 4; ix++)
{
glPushMatrix();
glColor3f(1,1,1);
glBegin(GL_LINES);
glVertex2i(-9 , -9 + ix * 6);
glVertex2i(9 , -9 + ix * 6 );
glEnd();
glPopMatrix();
}
for( iy = 0; iy < 4; iy++ )
{
glPushMatrix();
glColor3f(1,1,1);
glBegin(GL_LINES);
glVertex2i(-9 + iy * 6, 9 );
glVertex2i(-9 + iy * 6, -9 );
glEnd();
glPopMatrix();
}
glColorMaterial(GL_FRONT, GL_AMBIENT);
glColor4f(0.5, 0.5, 0.5, 1.0);
glColorMaterial(GL_FRONT, GL_EMISSION);
glColor4f(0.0, 0.0, 0.0, 1.0 );
glColorMaterial(GL_FRONT, GL_SPECULAR);
glColor4f(0.35, 0.35, 0.35, 1.0);
glColorMaterial(GL_FRONT, GL_DIFFUSE);
glColor4f(0.69, 0.69, 0.69, 1.0);
//glDisable(GL_COLOR_MATERIAL);
glColor3f( 1.0, 0.0, 1.0); // Cube color
//glEnable(GL_COLOR_MATERIAL);
// Draw object in box's
for( i = 0; i < 9; i++)
{
j = 0;
if (abs( win ) == 1 )
{
if ( (i == box[spinboxes][0]) || (i == box[spinboxes][1]) || (i == box[spinboxes][2]))
{
j = spin;
}else j = 0;
}
if(box_map[i] == 1) Draw_X( object_map[i][0], object_map[i][1], -1, j);
if(box_map[i] == -1) Draw_O( object_map[i][0], object_map[i][1], -1, j);
}
//glDisable(GL_COLOR_MATERIAL);
glutSwapBuffers();
}
// This is called when the window has been resized.
void reshape (int w, int h)
{
Win_x = w;
Win_y = h;
glViewport (0, 0, (GLsizei) w, (GLsizei) h);
glMatrixMode (GL_PROJECTION);
glLoadIdentity ();
}
// Read the keyboard
void keyboard (unsigned char key, int x, int y)
{
switch (key)
{
case 'v':
case 'V':
view_state = abs(view_state -1);
break;
case 'l':
case 'L':
light_state = abs(light_state -1);
break;
case 27:
exit(0); // exit program when [ESC] key presseed
break;
default:
break;
}
}
void mouse(int button, int state, int x, int y)
{
// We convert windows mouse coords to out openGL coords
mouse_x = (18 * (float) ((float)x/(float)Win_x))/6;
mouse_y = (18 * (float) ((float)y/(float)Win_y))/6;
// What square have they clicked in?
object_select = mouse_x + mouse_y * 3;
if ( start_game == 0)
{
if ((button == GLUT_RIGHT_BUTTON) && (state == GLUT_DOWN))
{
player = 1;
player2 = -1;
init_game();
return;
}
if ((button == GLUT_LEFT_BUTTON) && (state == GLUT_DOWN))
{
player = -1;
player2 = 1;
init_game();
return;
}
}
if ( start_game == 1)
{
if ((button == GLUT_LEFT_BUTTON) && (state == GLUT_DOWN))
{
if (win == 0)
{
if (box_map[ object_select ] == 0)
{
box_map[ object_select ] = player;
win = check_move();
if (win == 1)
{
start_game = 0;
return;
}
win = check_move();
if (win == 1)
{
win = -1;
start_game = 0;
}
}
}
}
}
if ( win == 2 )start_game = 0;
}
// Main program
int main(int argc, char** argv)
{
glutInit(&argc, argv);
glutInitDisplayMode (GLUT_DOUBLE | GLUT_RGB | GLUT_DEPTH);
glutInitWindowSize (500, 500);
glutInitWindowPosition (10, 10);
glutCreateWindow ("X's and O's 3D");
init ();
glutDisplayFunc(display);
glutReshapeFunc(reshape);
glutKeyboardFunc(keyboard);
glutMouseFunc(mouse);
glutTimerFunc( 10, TimeEvent, 1);
glutMainLoop();
return 0;
}