Сама ошибка.
...\speedprogramming-master\snake>g++ main.cpp field.cpp game.cpp painter.cpp snake.cpp -o bch.exe
main.cpp:3:10: error: #include expects "FILENAME" or <FILENAME>
#include glut.h
^~~~
main.cpp: In function 'void display()':
main.cpp:9:11: error: 'GL_COLOR_BUFFER_BIT' was not declared in this scope
glClear(GL_COLOR_BUFFER_BIT);
^~~~~~~~~~~~~~~~~~~
main.cpp:9:3: error: 'glClear' was not declared in this scope
glClear(GL_COLOR_BUFFER_BIT);
^~~~~~~
main.cpp:12:3: error: 'glutSwapBuffers' was not declared in this scope
glutSwapBuffers();
^~~~~~~~~~~~~~~
main.cpp: In function 'void timer(int)':
main.cpp:19:3: error: 'glutTimerFunc' was not declared in this scope
glutTimerFunc(300, timer, 0);
^~~~~~~~~~~~~
main.cpp: In function 'void keyEvent(int, int, int)':
main.cpp:26:8: error: 'GLUT_KEY_LEFT' was not declared in this scope
case GLUT_KEY_LEFT:
^~~~~~~~~~~~~
main.cpp:29:8: error: 'GLUT_KEY_UP' was not declared in this scope
case GLUT_KEY_UP:
^~~~~~~~~~~
main.cpp:32:8: error: 'GLUT_KEY_RIGHT' was not declared in this scope
case GLUT_KEY_RIGHT:
^~~~~~~~~~~~~~
main.cpp:35:8: error: 'GLUT_KEY_DOWN' was not declared in this scope
case GLUT_KEY_DOWN:
^~~~~~~~~~~~~
main.cpp: In function 'int main(int, char**)':
main.cpp:43:3: error: 'glutInit' was not declared in this scope
glutInit(&argc, argv);
^~~~~~~~
main.cpp:44:23: error: 'GLUT_DOUBLE' was not declared in this scope
glutInitDisplayMode(GLUT_DOUBLE | GLUT_RGB);
^~~~~~~~~~~
main.cpp:44:37: error: 'GLUT_RGB' was not declared in this scope
glutInitDisplayMode(GLUT_DOUBLE | GLUT_RGB);
^~~~~~~~
main.cpp:44:3: error: 'glutInitDisplayMode' was not declared in this scope
glutInitDisplayMode(GLUT_DOUBLE | GLUT_RGB);
^~~~~~~~~~~~~~~~~~~
main.cpp:45:3: error: 'glutInitWindowSize' was not declared in this scope
glutInitWindowSize(Field::WIDTH * Field::BLOCK_WIDTH,
^~~~~~~~~~~~~~~~~~
main.cpp:47:3: error: 'glutInitWindowPosition' was not declared in this scope
glutInitWindowPosition(100, 780);
^~~~~~~~~~~~~~~~~~~~~~
main.cpp:48:3: error: 'glutCreateWindow' was not declared in this scope
glutCreateWindow("Snake");
^~~~~~~~~~~~~~~~
main.cpp:49:3: error: 'glClearColor' was not declared in this scope
glClearColor(0, 0, 0, 1.0);
^~~~~~~~~~~~
main.cpp:50:16: error: 'GL_PROJECTION' was not declared in this scope
glMatrixMode(GL_PROJECTION);
^~~~~~~~~~~~~
main.cpp:50:3: error: 'glMatrixMode' was not declared in this scope
glMatrixMode(GL_PROJECTION);
^~~~~~~~~~~~
main.cpp:51:3: error: 'glLoadIdentity' was not declared in this scope
glLoadIdentity();
^~~~~~~~~~~~~~
main.cpp:52:3: error: 'glOrtho' was not declared in this scope
glOrtho(0, Field::WIDTH * Field::BLOCK_WIDTH,
^~~~~~~
main.cpp:55:3: error: 'glutDisplayFunc' was not declared in this scope
glutDisplayFunc(display);
^~~~~~~~~~~~~~~
main.cpp:56:3: error: 'glutSpecialFunc' was not declared in this scope
glutSpecialFunc(keyEvent);
^~~~~~~~~~~~~~~
main.cpp:59:3: error: 'glutMainLoop' was not declared in this scope
glutMainLoop();
^~~~~~~~~~~~
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