Download OU BE (B-Tech) CSE Mini Projects Code Create a simple walk through program using even

/* Create a simple walk through program using event handling mechanism */

#include<GL/glut.h>

int a=2,b=0,ww=600,wh=600,movd;

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void polygon()

{

glColor3f(1.0,0.0,0.0);//red polygon

glBegin(GL_POLYGON);

glVertex2f(a-45,b);

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glVertex2f(a-15,b);

glVertex2f(a-15,b+30);

glVertex2f(a-45,b+30);

glEnd();

}

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void drawRoad()

{

glBegin(GL_QUADS);

glColor3f(0.5,0.5,0.5);

glVertex2f(-60, -600);

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glVertex2f(60, -600);

glVertex2f(60, 600);

glVertex2f(-60, 600);

glEnd();

}

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void drawDivider()//white patch drawn in middle of road

{

glLoadIdentity();

glTranslatef(0, movd, 0);

for(int i = -600; i <= 600; i++)

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{

glColor3f(1, 1, 1);

glBegin(GL_QUADS);

glVertex2f(-8, 10 * 15 * i + 20);

glVertex2f(-8, 10 * 15 * i - 20);

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glVertex2f(8, 10 * 15 * i - 20);

glVertex2f(8, 10 * 15 * i + 20);

glEnd();

}

glLoadIdentity();

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}

void display()

{

glClearColor(0.0,1.0,0.3,1.0);

glClear(GL_COLOR_BUFFER_BIT);

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drawRoad(); //for road

drawDivider(); //for divider

polygon(); //for object

glutSwapBuffers();

}

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void keyboard(unsigned char button, int x, int y)

{

a=2;

if(button==GLUT_KEY_LEFT)

if(button==GLUT_KEY_RIGHT)

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a=60;

if(button==GLUT_KEY_DOWN)

movd=movd+20;

if(button==GLUT_KEY_UP)

movd=movd-20;

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}

glutPostRedisplay();

}

void reshape (int w, int h)

{

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glViewport(0, 0, (GLsizei) w, (GLsizei) h);

glMatrixMode (GL_PROJECTION);

glLoadIdentity ();

gluOrtho2D(-ww,ww,-wh,wh);

glMatrixMode(GL_MODELVIEW);

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glLoadIdentity();

}

int main(int argc, char **argv)

{

glutInit(&argc, argv);

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glutInitDisplayMode(GLUT_DEPTH|GLUT_RGB|GLUT_DOUBLE);

glutInitWindowSize(ww,wh);

glutInitWindowPosition(100,100);

glutCreateWindow("Walk Game");

glutSpecialFunc(keyboard);

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glutDisplayFunc(display);

glutReshapeFunc(reshape);

glutMainLoop();

}

Output Screen

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