MEMBUAT PAPAN CATUR DENGAN CODE BLOCK

#include <windows.h>
#include <iostream>
#include <stdlib.h> //Needed for "exit" function
#include <GL/glut.h>

void myinit()
{
    glClearColor(0.0, 0.0, 0.0, 1.0);
    glColor3f(0.0, 0.0, 1.0);
    glMatrixMode(GL_PROJECTION);
    glLoadIdentity();
    gluOrtho2D(0.0, 90.0, 0.0, 90.0);
    glMatrixMode(GL_MODELVIEW);

}
void display()
{
    glClear(GL_COLOR_BUFFER_BIT);
    int k = 0;
    for(int i=0;i<9;i++)
    {
        for(int j=0;j<9;j++)
        {
            if ((i+j)%2==0)
                glColor3f(1.0, 0.6, 0.6);
            else
                glColor3f(1.0, 1.0, 1.0);
            glRecti((i*10),(j*10),(i*10)+10,(j*10)+10);
            glColor3f(1.0, 1.0, 0.0);

            if (k % 4 == 0) {
                glColor3f(0.0, 0.0, 0.0);
                for(int l=0;l<7;l+=4)
                {
                    for(int m=0;m<7;m+=4)
                    {
                glLineWidth(2);
                glBegin(GL_LINE_LOOP);
                glColor3f(0.0, 0.6, 1.0);
                   glVertex2f(1+l+i*10, 1+m+j*10);
                   glVertex2f(3+l+i*10, 5+m+j*10);
                   glVertex2f(5+l+i*10, 1+m+j*10);
                   glVertex2f(1+l+i*10, 3.5+m+j*10);
                   glVertex2f(5+l+i*10, 3.5+m+j*10);
                glEnd();

                    }
                }
            }
            if (k%4==1){
                glColor3f(1,0,0);
                  glLineWidth(2);
                glBegin(GL_LINE_LOOP);
                    glVertex2f(i*10+8,j*10+2);
                    glVertex2f(i*10+8,j*10+8);
                    glVertex2f(i*10+3,j*10+8);
                    glVertex2f(i*10+3,j*10+2);
                glEnd();
                glColor3f(1,0,0);
                  glLineWidth(2);
                glBegin(GL_LINE_LOOP);

                    glVertex2f(i*10+7,j*10+3);
                    glVertex2f(i*10+7,j*10+7);
                    glVertex2f(i*10+4,j*10+7);
                    glVertex2f(i*10+4,j*10+3);
                    glEnd();


            }

           if (k%4==2){
               glColor3f(1,0,0);
                  glLineWidth(2);
                glBegin(GL_LINE_LOOP);
                    glVertex2f(i*10+7,j*10+1);
                    glVertex2f(i*10+7,j*10+8);
                    glVertex2f(i*10+2,j*10+8);
                    glVertex2f(i*10+2,j*10+1);
                glEnd();
                glColor3f(1,0,0);
                  glLineWidth(2);
                glBegin(GL_LINE_LOOP);
                    glVertex2f(i*10+6,j*10+2);
                    glVertex2f(i*10+6,j*10+4);
                    glVertex2f(i*10+3,j*10+4);
                    glVertex2f(i*10+3,j*10+2);
                    glEnd();
                    glColor3f(1,0,0);
                  glLineWidth(2);
                glBegin(GL_LINE_LOOP);
                    glVertex2f(i*10+6,j*10+5);
                    glVertex2f(i*10+6,j*10+7);
                    glVertex2f(i*10+3,j*10+7);
                    glVertex2f(i*10+3,j*10+5);
                    glEnd();

            }

            if (k%4==3){

                glColor3f(1,0,0);
                glLineWidth(2);
                glBegin(GL_LINE_LOOP);
                    glVertex2f(i*10+7,j*10+2);
                    glVertex2f(i*10+7,j*10+8);
                    glVertex2f(i*10+6,j*10+8);
                    glVertex2f(i*10+6,j*10+5);
                    glVertex2f(i*10+3,j*10+5);
                    glVertex2f(i*10+3,j*10+8);
                    glVertex2f(i*10+2,j*10+8);
                    glVertex2f(i*10+2,j*10+4);
                    glVertex2f(i*10+6,j*10+4);
                    glVertex2f(i*10+6,j*10+2);

                glEnd();


            }
            k++;
        }
    }
    glFlush();
}
void key(unsigned char key, int mouseX, int mouseY)
{
    if (key=='q' || key=='Q') exit(-1);
}
int main(int argc, char* argv[])
{

    glutInitWindowSize(800,700);
    glutInitWindowPosition(100,100);
    glutInitDisplayMode(GLUT_SINGLE | GLUT_RGB);
    glutCreateWindow("Papan Catur NRP ");
    glutDisplayFunc(display);
    glutKeyboardFunc(key);
    myinit();
    glutMainLoop();
    return 0;
}