OpenGL texturing level - c++

Question

I'm trying to learn OpenGL, and I want to start texturing but I got stuck. I've created a level with two rooms and a corridor, so I want diferent textures for different parts (that is, a texture for the floor, texture for the walls and so on) but after looking at the NeHe tutorial I'm still stuck, where do I need to put it in my code?
#include <windows.h>
#include <gl\gl.h>
#include <gl\glut.h>
#include <gl\glu.h>
void init(void);
void display(void);
void keyboard(unsigned char, int, int);
void resize(int, int);
int is_depth; /* depth testing flag */
int main (int argc, char **argv)
{
glutInit(&argc, argv);
glutInitDisplayMode(GLUT_DOUBLE | GLUT_RGB);
glutInitWindowSize(600, 600);
glutInitWindowPosition(40, 40);
glutCreateWindow("The Cube World");
init();
glutDisplayFunc(display);
glutKeyboardFunc(keyboard);
/* This time we're going to keep the aspect ratio
constant by trapping the window resizes. */
glutReshapeFunc(resize);
glutMainLoop();
return 0;
}
void init(void)
{
glClearColor(0.0, 0.0, 0.0, 0.0);
glEnable(GL_DEPTH_TEST);
is_depth = 1;
glMatrixMode(GL_MODELVIEW);
}
void display(void)
{
if (is_depth)
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
else
glClear(GL_COLOR_BUFFER_BIT);
glBegin(GL_QUADS);
//floor
glColor3f(0.2f, 0.2f, 0.2f);
glVertex3f(-50.0, 0.0, -25.0);
glColor3f(0.4f, 0.4f, 0.4f);
glVertex3f(-50.0, 0.0, 25.0);
glColor3f(0.6f, 0.6f, 0.6f);
glVertex3f(50.0, 0.0, 25.0);
glColor3f(0.8f, 0.8f, 0.8f);
glVertex3f(50.0, 0.0, -25.0);
//left wall
glColor3f(0.2f, 0.2f, 0.2f);
glVertex3f(-50.0, 0.0, -25.0);
glColor3f(0.4f, 0.4f, 0.4f);
glVertex3f(-50.0, 00.0, 25.0);
glColor3f(0.6f, 0.6f, 0.6f);
glVertex3f(-50.0, 25.0, 25.0);
glColor3f(0.8f, 0.8f, 0.8f);
glVertex3f(-50.0, 25.0, -25.0);
//right wall
glColor3f(0.2f, 0.2f, 0.2f);
glVertex3f(50.0, 0.0, -25.0);
glColor3f(0.4f, 0.4f, 0.4f);
glVertex3f(50.0, 00.0, 25.0);
glColor3f(0.6f, 0.6f, 0.6f);
glVertex3f(50.0, 25.0, 25.0);
glColor3f(0.8f, 0.8f, 0.8f);
glVertex3f(50.0, 25.0, -25.0);
//roof
glColor3f(0.2f, 0.2f, 0.2f);
glVertex3f(-50.0, 25.0, -25.0);
glColor3f(0.4f, 0.4f, 0.4f);
glVertex3f(-50.0, 25.0, 25.0);
glColor3f(0.6f, 0.6f, 0.6f);
glVertex3f(50.0, 25.0, 25.0);
glColor3f(0.8f, 0.8f, 0.8f);
glVertex3f(50.0, 25.0, -25.0);
//right panel
glColor3f(0.2f, 0.2f, 0.2f);
glVertex3f(10.0, 0.0, -25.0);
glColor3f(0.4f, 0.4f, 0.4f);
glVertex3f(10.0, 15.0, -25.0);
glColor3f(0.6f, 0.6f, 0.6f);
glVertex3f(50.0, 15.0, -25.0);
glColor3f(0.8f, 0.8f, 0.8f);
glVertex3f(50.0, 0.0, -25.0);
//left panel
glColor3f(0.2f, 0.2f, 0.2f);
glVertex3f(-10.0, 0.0, -25.0);
glColor3f(0.4f, 0.4f, 0.4f);
glVertex3f(-10.0, 15.0, -25.0);
glColor3f(0.6f, 0.6f, 0.6f);
glVertex3f(-50.0, 15.0, -25.0);
glColor3f(0.8f, 0.8f, 0.8f);
glVertex3f(-50.0, 0.0, -25.0);
//top panel
glColor3f(0.2f, 0.2f, 0.2f);
//bottom right
glVertex3f(50.0, 15.0, -25.0);
glColor3f(0.4f, 0.4f, 0.4f);
//top right
glVertex3f(50.0, 25.0, -25.0);
glColor3f(0.6f, 0.6f, 0.6f);
//top left
glVertex3f(-50.0, 25.0, -25.0);
glColor3f(0.8f, 0.8f, 0.8f);
//bottom left
glVertex3f(-50.0, 15.0, -25.0);
// corridor floor
glColor3f(0.2f, 0.2f, 0.2f);
glVertex3f(-10.0, 0.0, -25.0);
glColor3f(0.4f, 0.4f, 0.4f);
glVertex3f(-10.0, 0.0, -275.0);
glColor3f(0.6f, 0.6f, 0.6f);
glVertex3f(10.0, 0.0, -275.0);
glColor3f(0.8f, 0.8f, 0.8f);
glVertex3f(10.0, 0.0, -25.0);
// corridor left wall
glColor3f(0.2f, 0.2f, 0.2f);
glVertex3f(-10.0, 0.0, -25.0);
glColor3f(0.4f, 0.4f, 0.4f);
glVertex3f(-10.0, 00.0, -275.0);
glColor3f(0.6f, 0.6f, 0.6f);
glVertex3f(-10.0, 15.0, -275.0);
glColor3f(0.8f, 0.8f, 0.8f);
glVertex3f(-10.0, 15.0, -25.0);
// corridor right wall
glColor3f(0.2f, 0.2f, 0.2f);
glVertex3f(10.0, 0.0, -25.0);
glColor3f(0.4f, 0.4f, 0.4f);
glVertex3f(10.0, 00.0, -275.0);
glColor3f(0.6f, 0.6f, 0.6f);
glVertex3f(10.0, 15.0, -275.0);
glColor3f(0.8f, 0.8f, 0.8f);
glVertex3f(10.0, 15.0, -25.0);
//corridor roof
glColor3f(0.2f, 0.2f, 0.2f);
glVertex3f(-10.0, 15.0, -25.0);
glColor3f(0.4f, 0.4f, 0.4f);
glVertex3f(-10.0, 15.0, -275.0);
glColor3f(0.6f, 0.6f, 0.6f);
glVertex3f(10.0, 15.0, -275.0);
glColor3f(0.8f, 0.8f, 0.8f);
glVertex3f(10.0, 15.0, -25.0);
//right panel room 2
glColor3f(0.2f, 0.2f, 0.2f);
glVertex3f(10.0, 0.0, -275.0);
glColor3f(0.4f, 0.4f, 0.4f);
glVertex3f(10.0, 15.0, -275.0);
glColor3f(0.6f, 0.6f, 0.6f);
glVertex3f(50.0, 15.0, -275.0);
glColor3f(0.8f, 0.8f, 0.8f);
glVertex3f(50.0, 0.0, -275.0);
//left panel room 2
glColor3f(0.2f, 0.2f, 0.2f);
glVertex3f(-10.0, 0.0, -275.0);
glColor3f(0.4f, 0.4f, 0.4f);
glVertex3f(-10.0, 15.0, -275.0);
glColor3f(0.6f, 0.6f, 0.6f);
glVertex3f(-50.0, 15.0, -275.0);
glColor3f(0.8f, 0.8f, 0.8f);
glVertex3f(-50.0, 0.0, -275.0);
//top panel room 2
glColor3f(0.2f, 0.2f, 0.2f);
glVertex3f(50.0, 15.0, -275.0);
glColor3f(0.4f, 0.4f, 0.4f);
glVertex3f(50.0, 25.0, -275.0);
glColor3f(0.6f, 0.6f, 0.6f);
glVertex3f(-50.0, 25.0, -275.0);
glColor3f(0.8f, 0.8f, 0.8f);
glVertex3f(-50.0, 15.0, -275.0);
//right wall room 2
glColor3f(0.2f, 0.2f, 0.2f);
glVertex3f(50.0, 0.0, -275.0);
glColor3f(0.4f, 0.4f, 0.4f);
glVertex3f(50.0, 00.0, -325.0);
glColor3f(0.6f, 0.6f, 0.6f);
glVertex3f(50.0, 25.0, -325.0);
glColor3f(0.8f, 0.8f, 0.8f);
glVertex3f(50.0, 25.0, -275.0);
//left wall room 2
glColor3f(0.2f, 0.2f, 0.2f);
glVertex3f(-50.0, 0.0, -275.0);
glColor3f(0.4f, 0.4f, 0.4f);
glVertex3f(-50.0, 00.0, -325.0);
glColor3f(0.6f, 0.6f, 0.6f);
glVertex3f(-50.0, 25.0, -325.0);
glColor3f(0.8f, 0.8f, 0.8f);
glVertex3f(-50.0, 25.0, -275.0);
//roof room 2
glColor3f(0.2f, 0.2f, 0.2f);
glVertex3f(-50.0, 25.0, -275.0);
glColor3f(0.4f, 0.4f, 0.4f);
glVertex3f(-50.0, 25.0, -325.0);
glColor3f(0.6f, 0.6f, 0.6f);
glVertex3f(50.0, 25.0, -325.0);
glColor3f(0.8f, 0.8f, 0.8f);
glVertex3f(50.0, 25.0, -275.0);
//back wall room 2
glColor3f(0.2f, 0.2f, 0.2f);
glVertex3f(50.0, 0.0, -325.0);
glColor3f(0.4f, 0.4f, 0.4f);
glVertex3f(50.0, 25.0, -325.0);
glColor3f(0.6f, 0.6f, 0.6f);
glVertex3f(-50.0, 25.0, -325.0);
glColor3f(0.8f, 0.8f, 0.8f);
glVertex3f(-50.0, 0.0, -325.0);
//floor room 2
glColor3f(0.2f, 0.2f, 0.2f);
glVertex3f(-50.0, 0.0, -275.0);
glColor3f(0.4f, 0.4f, 0.4f);
glVertex3f(-50.0, 0.0, -325.0);
glColor3f(0.6f, 0.6f, 0.6f);
glVertex3f(50.0, 0.0, -325.0);
glColor3f(0.8f, 0.8f, 0.8f);
glVertex3f(50.0, 0.0, -275.0);
glEnd();
glutSwapBuffers();
}
void keyboard(unsigned char key, int x, int y)
{
switch (key)
{
case 'a':
case 'A':
glTranslatef(5.0, 0.0, 0.0);
break;
case 'd':
case 'D':
glTranslatef(-5.0, 0.0, 0.0);
break;
case 'w':
case 'W':
glTranslatef(0.0, 0.0, 5.0);
break;
case 's':
case 'S':
glTranslatef(0.0, 0.0, -5.0);
break;
case 't':
case 'T':
if (is_depth)
{
is_depth = 0;
glDisable(GL_DEPTH_TEST);
}
else
{
is_depth = 1;
glEnable(GL_DEPTH_TEST);
}
}
display();
}
void resize(int width, int height)
{
if (height == 0)
height = 1;
glMatrixMode(GL_PROJECTION);
glLoadIdentity();
/* Note we divide our width by our height to get the aspect ratio. */
gluPerspective(45.0, width / height, 1.0, 400.0);
/* Set initial position */
glTranslatef(0.0, -5.0, -150.0);
glMatrixMode(GL_MODELVIEW);
}

Answer 1

You don't seem to have any code for texture loading. I'd suggest you head back to NeHe and read this tutorial http://nehe.gamedev.net/tutorial/texture_mapping/12038/
It feels like you are getting too far ahead of yourself, and you should be going through most (if not all) of the tutorials in order. If you're trying to make a first person shooter, I'd also suggest loading the level from a model file (there are articles about this on NeHe too)