2d Archer Game Using Opengl With Collision

#include <windows.h>
#include <stdlib.h>
#include <GL/glut.h>
#include<string.h>
#include<iostream>


GLfloat rotation = 90.0;
int posX = 70, posY = -120, posZ = 0;
int goal = 0;

int dartX = -150, dartY = 30;
int width = 120, height = 130;
int mousewidth = 25, mouseheight = 25;

int dartX1 = -130, dartY1 = 50;
int width1 = 80, height1 = 90;

int dartX2 = -110, dartY2 = 70;
int width2 = 40, height2 = 50;


void renderBitmapString(float x, float y, char *string) {
int len;
glColor4f(1.0, 1.0, 1.0, 1.0);
glRasterPos2i(x, y);

//glDisable(GL_TEXTURE);
//glDisable(GL_TEXTURE_2D);
for (int i = 0, len = strlen(string); i < len; i++) {
glutBitmapCharacter(GLUT_BITMAP_9_BY_15, (int)string[i]);
}
//glEnable(GL_TEXTURE);
//glEnable(GL_TEXTURE_2D);
}

bool collision(int x1, int y1, int w1, int h1, int x2, int y2, int w2, int h2) {
if (y1 + h1<y2) return false;
if (y1>y2 + h2) return false;
if (x1 + w1<x2) return false;
if (x1>x2 + w2) return false;

return true;


}

void dartBoard() {



//int dartX=-185,dartY=60;
glBegin(GL_POLYGON);
glColor3f(1.0, 0.0, 0.0);
glVertex2f(dartX, dartY);
glVertex2f(dartX + width, dartY);
glVertex2f(dartX + width, dartY + height);
glVertex2f(dartX, dartY + height);
glEnd();


glBegin(GL_POLYGON);
glColor3f(0.0, 1.0, 0.0);
glVertex2f(dartX1, dartY1);
glVertex2f(dartX1 + width1, dartY1);
glVertex2f(dartX1 + width1, dartY1 + height1);
glVertex2f(dartX1, dartY1 + height1);
glEnd();


glBegin(GL_POLYGON);
glColor3f(0.0, 0.0, 1.0);
glVertex2f(dartX2, dartY2);
glVertex2f(dartX2 + width2, dartY2);
glVertex2f(dartX2 + width2, dartY2 + height2);
glVertex2f(dartX2, dartY2 + height2);
glEnd();

/*glVertex2f(posX, posY);//a
glVertex2f(posX + mousewidth - 10, posY + 10);

glVertex2f(posX - 35, posY + mouseheight + 20);*/


glBegin(GL_TRIANGLES);
glColor3f(1.0, 1.0, 1.0);
glVertex2f(posX, posY);//a
glVertex2f(posX + mousewidth, posY);//b
//glVertex2f(posX + mousewidth, posY + mouseheight);
glVertex2f(posX, posY + mouseheight);//c
glEnd();


if (collision(dartX, dartY, width, height, posX, posY, mousewidth, mouseheight)) {
renderBitmapString(0, 0, "Point 5");
if (collision(dartX1, dartY1, width1, height1, posX, posY, mousewidth, mouseheight)) {
renderBitmapString(0, 10, "Point 10");
if (collision(dartX2, dartY2, width2, height2, posX, posY, mousewidth, mouseheight)) {
renderBitmapString(0, 20, "Point 15");
}
}
}
}

/*void rectangle() {
glBegin(GL_POLYGON);
glColor3f(0.0, 0.0, 1.0);
glVertex2f(85, -90);
glVertex2f(155, -90);
glVertex2f(155, -10);
glVertex2f(85, -10);
glEnd();
}*/


/*void dart() {

}*/

void display() {
//Clear Window
glClear(GL_COLOR_BUFFER_BIT);


dartBoard();
//rectangle();
glMatrixMode(GL_MODELVIEW);
glLoadIdentity();
glPushMatrix();

//dart();
glPopMatrix();
glFlush();
}

void Circle(float X, float Y, float Radius)
{
#define PI 3.1415926535898
float DEG2RAD = 2 * PI / 180;
glBegin(GL_POLYGON);
for (float i = 0; i<360; i++)
{
float DEGINRAD = i*DEG2RAD;
glVertex2f((X + cos(DEGINRAD)*Radius) - 85, (Y + sin(DEGINRAD)*Radius) + 85);
}
glEnd();
}


void init() {
// set clear color to black
glClearColor(0.0, 0.0, 0.0, 0.0);

// set fill color to white
glColor3f(1.0, 1.0, 1.0);
glMatrixMode(GL_PROJECTION);
glLoadIdentity();
gluOrtho2D(-200.0, 200.0, -200.0, 200.0);

}
float move_unit = 130.5f;
void keyboardown(int key, int x, int y)
{
switch (key) {
case GLUT_KEY_RIGHT:
posX += move_unit / 10;
break;
case GLUT_KEY_LEFT:
//posY+=move_unit;
posX -= move_unit / 10;
break;

case GLUT_KEY_UP:
posY += move_unit / 10;
break;
case GLUT_KEY_DOWN:
posY -= move_unit / 10;
break;
/*case GLUT_KEY=="x":
posY+=move_unit;
posX-=move_unit;
break;*/
default:
break;
}
glutPostRedisplay();
}
void Normalkey(unsigned char key, int x, int y)
{
switch (key)
{
case 's':
while (goal <= move_unit) {
posY += 1;
posX -= 1;
goal++;
for (long i = 0; i < 1600000; i++)
{

}
display();
}
break;
case 'c':
goal = 0;
break;
case '0':
exit(0);

}
glutPostRedisplay();
}

int main(int argc, char** argv) {

glutInit(&argc, argv);
glutInitDisplayMode(GLUT_SINGLE | GLUT_RGB);
glutInitWindowSize(650, 600);
glutInitWindowPosition(250, 250);
glutCreateWindow("DART_BOARD");
glutDisplayFunc(display);
init();
glutSpecialFunc(keyboardown);
glutKeyboardFunc(Normalkey);
glutMainLoop();

}