I have create a game in glut. It was flickering so I used GLUT_DOUBLE and then it was showing the transparent window then I used glutSwapBuffers(); then it was showing game without flickering but there was no movement in game i.e. the keystrokes are not working. What should I do now??
Could you paste the relevant code here?
void display(void)
{
glClear (GL_COLOR_BUFFER_BIT);
arena();
start(); //start the game
comments();
next_level();
glutSwapBuffers();
}
void init() {
glClearColor (0.0, 0.0, 0.0, 0.0);
// glEnable(GL_DEPTH_TEST);
glMatrixMode(GL_PROJECTION);
glLoadIdentity();
glShadeModel(GL_SMOOTH);
glOrtho(-1000.0, 1000.0, -1000.0, 1000.0, -1000.0, 1000.0);
glutDisplayFunc(display);
glutKeyboardFunc(processNormalKeys);
glutSpecialFunc(pressKey);
}
int main(int argc, char** argv)
{
glutInit(&argc, argv);
glutInitDisplayMode(GLUT_DOUBLE | GLUT_RGBA | GLUT_DEPTH);
// glutInitDisplayMode (GLUT_SINGLE | GLUT_RGB);
glutInitWindowSize (700,700);
glutInitWindowPosition (100,-100);
glutCreateWindow ("BLASTERBALL 1.0");
init ();
glutMainLoop();
return 0;
}
please help someone!!!
glutDisplayFunc(display);
glutKeyboardFunc(processNormalKeys);
glutSpecialFunc(pressKey);
for a start, all of the above functions should be in your main function (before glutMainLoop();), NOT your init function.
also, why are you using glLoadIdentity(); in your init function?
I am new to this. I saw this on some site. What should I do here instead?
did moving the mouse and key functions to the main function resolve the issue.
from what i can see i your code, the glLoadIdentity() call isnt needed, thats all.
no its still same. The keystrokes are not working with GLUT_DOUBLE and glutSwapBuffer()
keep the functions mentioned in the main function, but remove the glLoadIdentity(); call
see if that helps.
dale
i did all those thing but still the issue is same.
I am stuck please help me out someone.
Ok, Number 1, im trying to be patient with you, but you have absolutely no patience whatsoever. I am finding you a little rude. People will help you out as and when they can, begging will get you no where.
Number 2, please post all of your code.
I didn’t mean it that way. I am really sorry for that.
#define GLUT_DISABLE_ATEXIT_HACK
#include<string>
#include<vector>
#include <stdlib.h>
#include <GL/glut.h>
#include <math.h>
#include <GL/gl.h>
#include<stack>
#define RESUME 1
#define PAUSE 2
#define INCREASE 3
#define DECREASE 4
#define REVERSE 5
#define RESTART 6
#define NORMAL1 7
#define POWER 8
#define NEXT 9
#define QUIT 10
using namespace std;
int flag=0;
int flag1=0;
int flag2=0;
int flag3=0;
int x1=0;
int y3=-835;
int x2=-925;
int y2=100;
int xc=0;
int yc=0;
int TIMER_MS = 10;
const float root=1/1.4142;
int a=-150;
int b=-900;
int c=150;
int d=-850;
int r=50;
const float PI = 3.1415926535f;
float NORMAL;
float ANGLE=0.75*PI;
int rad=10;
int temp2=rad;
int score1=-500;
int bricks;
int bricks1;
int level=1;
int life=3;
int s=-1;
int count=0;
int font=(int)GLUT_BITMAP_TIMES_ROMAN_24 ;
int font1=(int)GLUT_BITMAP_TIMES_ROMAN_10 ;
int font2=(int)GLUT_BITMAP_HELVETICA_18 ;
bool m=true;
bool enter=false;
bool power=false;
bool start1=true;
int condition=0;
int when=0;
int xy=1;
double boundry=(rad/1.4142)+1;
int specialKey;
int sensitivity=100;
char gameModeString[40] = "640x480";
char currentMode[80];
float rBall=0.0,gBall=1.0,bBall=1.0;
float rBar=0.0,gBar=0.0,bBar=1.0;
float rBrick=0.0,gBrick=0.0,bBrick=0.0;
float rButton=1.0,gButton=1.0,bButton=0.0;
float rBackground=1,gBackground=1,bBackground=1;
float rComments=1,gComments=0,bComments=0;
float rScore=1,gScore=1,bScore=1;
float rSelected=0,gSelected=1,bSelected=1;
float rTouched=0,gTouched=0,bTouched=1;
void renderBitmapCharacher(float x, float y, void *font,char *string);
void processNormalKeys(unsigned char key, int , int );
void print_score(int );
void init();
vector< pair < pair <int ,int >,pair<int ,int > > > temp,temp1;
vector < vector< pair < pair <int ,int >,pair<int ,int > > > > input(5);
stack < pair < pair <int ,int >,pair<int ,int > > > touch_finder;
pair < pair <int ,int >,pair<int ,int > > ptouch;
void print(int xl,int yl,int xh,int yh){
glBegin(GL_POLYGON); //create the background
glVertex2f(xl,yl);
glVertex2f(xh,yl);
glVertex2f(xh,yh);
glVertex2f(xl,yh);
glEnd();
glFlush();
glColor3f(rBackground,gBackground,bBackground); // Background color
glBegin(GL_LINE_LOOP); // create the bricks boundary
glVertex2f(xl,yl);
glVertex2f(xh,yl);
glVertex2f(xh,yh);
glVertex2f(xl,yh);
glEnd();
glFlush();
}
void make(int xl,int yl,int xh,int yh){ // create the control panel
glBegin(GL_POLYGON);
glVertex2f(xl,yl);
glVertex2f(xh,yl);
glVertex2f(xh,yh);
glVertex2f(xl,yh);
glEnd();
glFlush();
}
void make_boundry(int xl,int yl,int xh,int yh){ // create the boundary in control panel
glBegin(GL_LINE_LOOP);
glVertex2f(xl,yl);
glVertex2f(xh,yl);
glVertex2f(xh,yh);
glVertex2f(xl,yh);
glEnd();
glFlush();
}
void make_bricks(void){ // create the bricks
for(int i=0;i<temp.size();i++){
glColor3f(rBrick,gBrick,bBrick);
print(temp[i].first.first,temp[i].first.second,temp[i].second.first,temp[i].second.second);
}
}
float reflect(float angle, float normal) {
angle = 2 * normal - PI - angle;
while (angle < 0) {
angle += 2 * PI;
}
while (angle > 2 * PI) {
angle -= 2 * PI;
}
return angle;
}
void start(void){
if(start1==true){ //this is due to restart either through keyboard or menu function
score1=-500;
s=-1;
life=3;
level=1;
glColor3f (rBar,gBar,bBar);
print(a,b,c,d);
power=false;
rad=10;
ANGLE=0.75*PI;
boundry=(rad/1.4142)+1;
}
else{ //this is due to change of resolution
rad=temp2;
s=-1;
score1-=500;
}
int i,j;
input[0].clear();
for(i=-5;i<=5;i++){
for(j=0;j<i+1;j++){
input[0].push_back(make_pair(make_pair(-600+i*100,0+75*j),make_pair(-600+i*100+100,75+75*j)));
}
}
temp=input[0];
if(level>=4){
temp1.clear();
temp.clear();
}
if((condition==1||condition==2||condition==3||condition==4||condition==6)&&(start1==false))
temp=temp1;
make_bricks();
bricks=temp.size();
print_score(bricks);
}
void print_score(int remaining){
string score;
int t=bricks-remaining;
if(t!=s){
score1+=500;
int printer;
int i=0,abc[20];
char a[20];
printer=score1;
if(printer==0){
for(int j=0;j<1;j++)
a[j]=char(48);
}
else{
while(printer>0){
abc[i]=printer%10;
printer/=10;
i++;
}
}
for(int j=0;j<i;j++){
a[j]=char(abc[i-j-1]+'0');
}
glColor3f(0.2,0.1,0.1);
make(600,590,900,700);
glColor3f(rComments,gComments,bComments);
renderBitmapCharacher(600,700,(void *)font2,"SCORE: ");
glColor3f(rScore,gScore,bScore);
renderBitmapCharacher(600,600,(void *)font2,a);
}
char lvl[1];
for(int k=0;k<1;k++)
lvl[k]=char(level+48);
glColor3f(0.2,0.1,0.1);
make(750,375,820,500);
glColor3f(rComments,gComments,bComments);
renderBitmapCharacher(600,400,(void *)font2,"LEVEL: ");
glColor3f(rScore,gScore,bScore);
renderBitmapCharacher(800,400,(void *)font2,lvl);
glColor3f(0.2,0.1,0.1);
make(820,375,900,500);
char lyf[4];
for(int k2=0;k2<1;k2++)
lyf[k2]=char(life+48);;
glColor3f(0.2,0.1,0.1);
make(775,175,825,300);
glColor3f(rComments,gComments,bComments);
renderBitmapCharacher(600,200,(void *)font2,"LIFE: ");
glColor3f(rScore,gScore,bScore);
renderBitmapCharacher(800,200,(void *)font2,lyf);
s=t;
}
void comments(void){
glColor3f(rButton,gButton,bButton); //BUTTON COLORS
make_boundry(580,-225,920,-125); //M
make_boundry(580,-125,920,-25); //P
make_boundry(-1000,900,-715,1000); //R
make_boundry(-715,900,-520,1000); //ESC
make_boundry(-520,900,-225,1000); //N
make_boundry(-225,900,125,1000); //SPACEBAR
make_boundry(125,900,450,1000); //UP
make_boundry(450,900,1000,1000); //DOWN
glColor3f(rComments,gComments,bComments); //COMMENT COLOR
renderBitmapCharacher(-900,910,(void *)font1,"R:Restart");
renderBitmapCharacher(-700,910,(void *)font1,"ESC:Quit");
renderBitmapCharacher(-500,910,(void *)font1,"N:Next level");
renderBitmapCharacher(-200,910,(void *)font1,"SPACEBAR:Pause");
renderBitmapCharacher(200,910,(void *)font1,"UP:Inc. Speed");
renderBitmapCharacher(500,910,(void *)font1,"DOWN:Dec. Speed");
renderBitmapCharacher(600,-100,(void *)font1,"P:PowerBall");
renderBitmapCharacher(600,-200,(void *)font1,"M:Normal Ball");
}
void next_level(void){
int i,j;
input[1].clear();
for(i=-2;i<=2;i++) //level two
{
for(j=-2;j<=2;j++)
{
input[1].push_back(make_pair(make_pair(-250+i*100,j*75),make_pair(-250+i*100+100,75*j+75)));
input[1].push_back(make_pair(make_pair(-750+i*100,550+j*75),make_pair(-750+i*100+100,75*j+550+75)));
input[1].push_back(make_pair(make_pair(150+i*100,550+j*75),make_pair(150+i*100+100,75*j+550+75)));
input[1].push_back(make_pair(make_pair(150+i*100,-350+j*75),make_pair(150+i*100+100,75*j-350+75)));
}
}
// level 3
input[2].clear();
for(i=0;i<15;i++) //vertical line
input[2].push_back(make_pair(make_pair(-200,-600+i*100),make_pair(-200+75,-600+i*100+100)));
for(i=0;i<6;i++){ //in right bottommost
input[2].push_back(make_pair(make_pair(-50+i*100,-250),make_pair(-50+i*100+100,-250+75)));
}
for(i=0;i<3;i++){
input[2].push_back(make_pair(make_pair(50+i*150,-325),make_pair(50+i*150+150,-325+75)));
}
for(i=0;i<2;i++){
input[2].push_back(make_pair(make_pair(100+i*175,-400),make_pair(100+i*175+175,-400+75)));
}
for(i=0;i<1;i++){
input[2].push_back(make_pair(make_pair(175+i*200,-475),make_pair(175+i*200+200,-475+75)));
}
for(i=0;i<5;i++){ //in left uppermost
for(j=0;j<4;j++){
input[2].push_back(make_pair(make_pair(-800+i*100,250+75*j),make_pair(-800+i*100+100,250+75+75*j)));
}
}
for(i=0;i<3;i++) //in left bottommost
input[2].push_back(make_pair(make_pair(-850+i*100,-500),make_pair(-850+i*100+100,-500+75)));
for(i=0;i<3;i++)
input[2].push_back(make_pair(make_pair(-850+i*100,-100),make_pair(-850+i*100+100,-100+75)));
for(i=0;i<3;i++)
input[2].push_back(make_pair(make_pair(-600+i*100,-300),make_pair(-600+i*100+100,-300+75)));
for(i=0;i<4;i++) // in right uppermost
input[2].push_back(make_pair(make_pair(0+i*100,650),make_pair(0+i*100+100,650+75)));
for(i=0;i<5;i++)
input[2].push_back(make_pair(make_pair(180,650-i*100),make_pair(180+75,650-100-i*100)));
for(i=0;i<4;i++)
input[2].push_back(make_pair(make_pair(0+i*100,75),make_pair(0+i*100+100,75+75)));
// level 4
input[3].clear();
for(i=0;i<17;i++)
input[3].push_back(make_pair(make_pair(-250,-450+i*75),make_pair(-250+100,-450+i*75+75)));
for(i=0;i<15;i++){
///input[3].push_back(make_pair(make_pair(-350,-375+i*75),make_pair(-350+100,-375+i*75+75)));
if(i==12)
continue;
input[3].push_back(make_pair(make_pair(-350,-375+i*75),make_pair(-350+100,-375+i*75+75)));
input[3].push_back(make_pair(make_pair(-150,-375+i*75),make_pair(-150+100,-375+i*75+75)));
}
for(i=0;i<10;i++){
input[3].push_back(make_pair(make_pair(-450,-300+i*75),make_pair(-450+100,-300+i*75+75)));
input[3].push_back(make_pair(make_pair(-50,-300+i*75),make_pair(-50+100,-300+i*75+75)));
}
for(i=0;i<12;i++){
if(i==2 || i==9)
continue;
input[3].push_back(make_pair(make_pair(-550,-375+i*75),make_pair(-550+100,-375+i*75+75)));
input[3].push_back(make_pair(make_pair(50,-375+i*75),make_pair(50+100,-375+i*75+75)));
}
for(i=0;i<3;i++){
input[3].push_back(make_pair(make_pair(-650,-450+i*75),make_pair(-650+100,-450+i*75+75)));
input[3].push_back(make_pair(make_pair(150,-450+i*75),make_pair(150+100,-450+i*75+75)));
}
for(i=0;i<6;i++){
if(i==3 || i==2 || i==4)
continue;
input[3].push_back(make_pair(make_pair(-650,375+i*75),make_pair(-650+100,375+i*75+75)));
input[3].push_back(make_pair(make_pair(150,375+i*75),make_pair(150+100,375+i*75+75)));
}
for(i=0;i<1;i++){
input[3].push_back(make_pair(make_pair(-750,750+i*75),make_pair(-750+100,750+i*75+75)));
input[3].push_back(make_pair(make_pair(250,750+i*750),make_pair(250+100,750+i*75+75)));
}
for(i=0;i<2;i++){
input[3].push_back(make_pair(make_pair(-850+i*100,675),make_pair(-850+i*100+100,675+75)));
input[3].push_back(make_pair(make_pair(250+i*100,675),make_pair(250+100+i*100,675+75)));
}
for(i=0;i<10;i++){
if(i==4 || i==5 || i==6 || i==7 || i==8 )
continue;
input[3].push_back(make_pair(make_pair(-950,-75+i*75),make_pair(-950+100,-75+i*75+75)));
input[3].push_back(make_pair(make_pair(450,-75+i*75),make_pair(450+100,-75+i*75+75)));
}
// level 5
input[4].clear();
for(i=0;i<15;i++) //horozontal line
input[4].push_back(make_pair(make_pair(-950+i*100,-675),make_pair(-950+i*100+100,-675+75)));
for(i=0;i<14;i++)
input[4].push_back(make_pair(make_pair(-895+i*100,-600),make_pair(-895+i*100+100,-600+75)));
for(i=0;i<13;i++)
input[4].push_back(make_pair(make_pair(-840+i*100,-525),make_pair(-840+i*100+100,-525+75)));
for(i=0;i<12;i++)
input[4].push_back(make_pair(make_pair(-785+i*100,-450),make_pair(-785+i*100+100,-450+75)));
for(i=0;i<11;i++)
input[4].push_back(make_pair(make_pair(-730+i*100,-375),make_pair(-730+i*100+100,-375+75)));
for(i=0;i<10;i++)
input[4].push_back(make_pair(make_pair(-675+i*100,-300),make_pair(-675+i*100+100,-300+75)));
for(i=0;i<9;i++)
input[4].push_back(make_pair(make_pair(-620+i*100,-225),make_pair(-620+i*100+100,-225+75)));
for(i=0;i<8;i++)
input[4].push_back(make_pair(make_pair(-565+i*100,-150),make_pair(-565+i*100+100,-150+75)));
for(i=0;i<7;i++)
input[4].push_back(make_pair(make_pair(-510+i*100,-75),make_pair(-510+i*100+100,-75+75)));
for(i=0;i<6;i++)
input[4].push_back(make_pair(make_pair(-455+i*100,0),make_pair(-455+i*100+100,0+75)));// lower part
for(i=0;i<5;i++)
input[4].push_back(make_pair(make_pair(-400+i*100,75),make_pair(-400+i*100+100,75+75)));
for(i=0;i<6;i++)
input[4].push_back(make_pair(make_pair(-455+i*100,150),make_pair(-455+i*100+100,150+75)));
for(i=0;i<7;i++)
input[4].push_back(make_pair(make_pair(-510+i*100,225),make_pair(-510+i*100+100,225+75)));
for(i=0;i<8;i++)
input[4].push_back(make_pair(make_pair(-565+i*100,300),make_pair(-565+i*100+100,300+75)));
for(i=0;i<9;i++)
input[4].push_back(make_pair(make_pair(-620+i*100,375),make_pair(-620+i*100+100,375+75)));
for(i=0;i<10;i++)
input[4].push_back(make_pair(make_pair(-675+i*100,450),make_pair(-675+i*100+100,450+75)));
for(i=0;i<11;i++)
input[4].push_back(make_pair(make_pair(-730+i*100,525),make_pair(-730+i*100+100,525+75)));
for(i=0;i<12;i++)
input[4].push_back(make_pair(make_pair(-785+i*100,600),make_pair(-785+i*100+100,600+75)));
for(i=0;i<13;i++)
input[4].push_back(make_pair(make_pair(-840+i*100,675),make_pair(-840+i*100+100,675+75)));
for(i=0;i<14;i++)
input[4].push_back(make_pair(make_pair(-895+i*100,750),make_pair(-895+i*100+100,750+75)));
for(i=0;i<15;i++) //horozontal line
input[4].push_back(make_pair(make_pair(-950+i*100,825),make_pair(-950+i*100+100,825+75)));
print_score(temp.size());
}
void erase_block(int a,int b,int c,int d,float e,int f){
glColor3f(rBackground,gBackground,bBackground);
make(a,b,c,d);
temp.erase(temp.begin()+f);
NORMAL=e*PI;
ANGLE=reflect(ANGLE,NORMAL);
}
void erase_block_power(int a,int b,int c,int d,float e,int f){
glColor3f(rBackground,gBackground,bBackground);
make(a,b,c,d);
temp.erase(temp.begin()+f);
}
void pause1(){
flag=0;
flag1=0;
flag3++;
}
void update(int value) {
glColor3f (rBackground,gBackground,bBackground); // update the color of background when ball leaves bar
draw(0,-835,r);
glColor3f (rBackground,gBackground,bBackground); // update the color of background when ball moves
draw(x1,y3,r);
float x,y;
x=x1+rad*cos(ANGLE);
y=y3+rad*sin(ANGLE);
glColor3f (rBall,gBall,bBall); // color of the ball when moving
draw((int)x,(int)y,(int)r);
int i;
// conditions for erasing the bricks
for(i=0;i <temp.size();i++){
if(abs((int)(x+r)-(int)temp[i].first.first)<abs((int)boundry)&&y>=(int)temp[i].first.second&&y<=(int)temp[i].second.second){
if(power==false)
erase_block(temp[i].first.first,temp[i].first.second,temp[i].second.first,temp[i].second.second,0,i);
if(power==true)
erase_block_power(temp[i].first.first,temp[i].first.second,temp[i].second.first,temp[i].second.second,0,i);
enter=true;
break;
}
if(abs((int)(x-r)-(int)temp[i].second.first)<abs((int)boundry)&&y>=(int)temp[i].first.second&&y<=(int)temp[i].second.second){
if(power==false)
erase_block(temp[i].first.first,temp[i].first.second,temp[i].second.first,temp[i].second.second,1,i);
if(power==true)
erase_block_power(temp[i].first.first,temp[i].first.second,temp[i].second.first,temp[i].second.second,1,i);
enter=true;
break;
}
if(abs((int)(y+r)-(int)temp[i].first.second)<abs((int)boundry)&&x>=(int)temp[i].first.first&&x<=(int)temp[i].second.first){
if(power==false)
erase_block(temp[i].first.first,temp[i].first.second,temp[i].second.first,temp[i].second.second,1.5,i);
if(power==true)
erase_block_power(temp[i].first.first,temp[i].first.second,temp[i].second.first,temp[i].second.second,1.5,i);
enter=true;
break;
}
if(abs((int)(y-r)-(int)temp[i].second.second)<abs((int)boundry)&&x>=(int)temp[i].first.first&&x<=(int)temp[i].second.first){
if(power==false)
erase_block(temp[i].first.first,temp[i].first.second,temp[i].second.first,temp[i].second.second,0.5,i);
if(power==true)
erase_block_power(temp[i].first.first,temp[i].first.second,temp[i].second.first,temp[i].second.second,0.5,i);
enter=true;
break;
}
if(sqrt(pow(x+r*cos(ANGLE)-temp[i].first.first,2)+pow(y+r*sin(ANGLE)-temp[i].first.second,2))<rad){
if(power==false)
erase_block(temp[i].first.first,temp[i].first.second,temp[i].second.first,temp[i].second.second,ANGLE/PI,i);
if(power==true)
erase_block_power(temp[i].first.first,temp[i].first.second,temp[i].second.first,temp[i].second.second,ANGLE/PI,i);
enter=true;
break;
}
if(sqrt(pow(x-r*cos(ANGLE)-temp[i].second.first,2)+pow(y+r*sin(ANGLE)-temp[i].first.second,2))<rad){
if(power==false)
erase_block(temp[i].first.first,temp[i].first.second,temp[i].second.first,temp[i].second.second,ANGLE/PI,i);
if(power==true)
erase_block_power(temp[i].first.first,temp[i].first.second,temp[i].second.first,temp[i].second.second,ANGLE/PI,i);
enter=true;
break;
}
if(sqrt(pow(x+r*cos(ANGLE)-temp[i].first.first,2)+pow(y-r*sin(ANGLE)-temp[i].second.second,2))<rad){
if(power==false)
erase_block(temp[i].first.first,temp[i].first.second,temp[i].second.first,temp[i].second.second,ANGLE/PI,i);
if(power==true)
erase_block_power(temp[i].first.first,temp[i].first.second,temp[i].second.first,temp[i].second.second,ANGLE/PI,i);
enter=true;
break;
}
if(sqrt(pow(x-r*cos(ANGLE)-temp[i].second.first,2)+pow(y-r*sin(ANGLE)-temp[i].second.second,2))<rad){
if(power==false)
erase_block(temp[i].first.first,temp[i].first.second,temp[i].second.first,temp[i].second.second,ANGLE/PI,i);
if(power==true)
erase_block_power(temp[i].first.first,temp[i].first.second,temp[i].second.first,temp[i].second.second,ANGLE/PI,i);
enter=true;
break;
}
}
if(enter==true)
when++;
if(when==5){
make_bricks();
enter=false;;
when=0;
}
print_score(temp.size());
if((int)(x-r+950)<abs((int)boundry)){
NORMAL=0;
ANGLE=reflect(ANGLE,NORMAL);
}
if(-y-r+900<abs((int)boundry))
{
NORMAL=1.5*PI;
ANGLE=reflect(ANGLE,NORMAL);
}
if(-x-r+950-400<abs((int)boundry))
{
NORMAL=PI;
ANGLE=reflect(ANGLE,NORMAL);
}
if(y-r+850<abs((int)boundry) && a<=x&&c>=x) //the ball touches the bar
{
NORMAL=0.5*PI;
ANGLE=reflect(ANGLE,NORMAL);
}
if(sqrt(pow(c-x,2)+pow(y-d,2))<=r){ //the ball touches the right part of the bar
rad=(-1)*rad;
temp2=rad;
}
if(sqrt(pow(a-x,2)+pow(y-d,2))<=r){ //the ball touches the left part of the bar
rad=(-1)*rad;
temp2=rad;
}
if(y-r+875<abs((int)boundry) ) //the ball misses the bar
{
life--;
if(life<0)
return;
if(life==0){
print_score(temp.size());
glColor3f(rComments,gComments,bComments);
renderBitmapCharacher(0,800,(void *)font,"GAME OVER");
pause1();
return;
}
glColor3f (rBackground,gBackground,bBackground);
print(-950,-900,550,-800);
print(a,b,c,d);
glColor3f (rBall,gBall,bBall); // the ball is re-created
draw(0,-835,r);
ANGLE=.75*PI;
x=0;
y=-825;
a=-150;
b=-900;
c=150;
d=-850;
glColor3f (0.0, 1.0,0.0); // bar is created again after miss
print(a,b,c,d);
flag=0;
flag1=0;
flag2=0;
print_score(temp.size());
}
if(temp.size()==0){
level++;
if(level>6){
level=6;
return;
}
if(level==6){
glColor3f(rComments,gComments,bComments);
renderBitmapCharacher(-700,0,(void *)font,"YOU HAVE WON THE MATCH");
return;
temp1.clear();
}
temp=input[level-1];
bricks=temp.size();
glColor3f (rBackground,gBackground,bBackground);
draw((int)x,(int)y,(int)r);
make_bricks();
glColor3f (rBackground,gBackground,bBackground);
print(-950,-900,550,-700);
print(a,b,c,d);
glColor3f (rBall,gBall,bBall);
draw(0,-835,r);
ANGLE=.75*PI;
x=0;
y=-835;
a=-150;
b=-900;
c=150;
d=-850;
glColor3f (0.0, 1.0,0.0);
print(a,b,c,d);
flag=0;
flag1=0;
flag2=0;
flag3=0;
print_score(temp.size());
//increase_speed();
}
x1=(int)x;
y3=(int)y;
temp1=temp;
if(flag!=0)
glutTimerFunc(TIMER_MS, update, 0);
}
void move_left(void)
{
if(a<=-950){
glColor3f (rBar,gBar,bBar);
print(-950,-900,-650,-850);
}
else
{
glColor3f (rBackground,gBackground,bBackground);
print(a,b,c,d);
a-=sensitivity;
c-=sensitivity;
glColor3f (rBar,gBar,bBar);
print(a,b,c,d);
}
}
void move_right(void)
{
if(c>=550){
glColor3f (rBar,gBar,bBar);
print(650-400,-900,950-400,-850);}
else
{
glColor3f (rBackground,gBackground,bBackground);
print(a,b,c,d);
a+=sensitivity;
c+=sensitivity;
glColor3f (rBar,gBar,bBar);
print(a,b,c,d);
}
}
void increase_speed(void){
if(rad>0)
rad+=10;
if(rad<0)
rad-=10;
boundry=abs((int)(rad/1.4142))+1;
temp2=rad;
}
void decrease_speed(void){
if(rad>0){
rad-=10;
if(rad==0)
rad+=10;
}
if(rad<0){
rad+=10;
if(rad==0)
rad-=10;
}
boundry=abs((int)(rad/1.4142))+1;
temp2=rad;
}
void restart(void){
start1=true;
glutPostRedisplay();
pause1();
}
void next(void){
glColor3f(1,1,1);
for(int f=0;f<temp.size();f++)
make(temp[f].first.first,temp[f].first.second,temp[f].second.first,temp[f].second.second);
temp.clear();
condition=0;
}
void touch_stack(int txl,int tyl,int txh,int tyh){
if(!touch_finder.empty()){
ptouch=touch_finder.top();
glColor3f(rButton,gButton,bButton);
make_boundry(ptouch.first.first,ptouch.first.second,ptouch.second.first,ptouch.second.second);
touch_finder.pop();
}
glColor3f(rTouched,gTouched,bTouched);
make_boundry(txl,tyl,txh,tyh);
touch_finder.push(make_pair(make_pair(txl,tyl),make_pair(txh,tyh)));
}
void processNormalKeys(unsigned char key, int x, int y) {
specialKey = glutGetModifiers();
if (specialKey == GLUT_ACTIVE_ALT) {
if (key == 114)
rBrick=1.0,gBrick=0.0,bBrick=0.0;
if (key == 103)
rBrick=0.0,gBrick=1.0,bBrick=0.0;
if(key == 98)
rBrick=0.0,gBrick=0.0,bBrick=1.0;
make_bricks();
}
else{
if (key == 27) //esc
exit(0);
if(key==32){ //spacebar
if(m==true){
pause1();
m=false;
}
else{
glutTimerFunc(TIMER_MS, update, 0);
flag++;
flag1++;
flag2++;
flag3=0;
m=true;
}
}
if(key==110){ //NEXT LEVEL==n
next();
}
if(key==114){ //start the game
restart();
}
if(key==113) //QUIT ==q
return;
if(key==112){ //POWERBALL=p
power=true;
rBall=1.0;
gBall=0.0;
bBall=0.0;
}
if(key==109){ //MODE NORMAL=m
power=false;
rBall=0.0;
gBall=1.0;
bBall=1.0;
}
}
}
void renderBitmapCharacher(float x, float y, void *font,char *string)
{
char *c;
glRasterPos2f(x, y);
for (c=string; *c != '\0'; c++) {
glutBitmapCharacter(font, *c);
}
}
void pressKey(int key, int x, int y) {
if(flag==0){
glutTimerFunc(TIMER_MS, update, 0);
flag++;
flag1++;
flag2++;
flag3=0;
m=true;
}
if(key==GLUT_KEY_LEFT)
move_left();
if(key==GLUT_KEY_RIGHT)
move_right();
if(key==GLUT_KEY_UP){ //increase speed
if(rad>0)
rad+=10;
if(rad<0)
rad-=10;
boundry=abs((int)(rad/1.4142))+1;
temp2=rad;
}
if(key==GLUT_KEY_DOWN){ //decrease speed
if(rad>0){
rad-=10;
if(rad==0)
rad+=10;
}
if(rad<0){
rad+=10;
if(rad==0)
rad-=10;
}
boundry=abs((int)(rad/1.4142))+1;
temp2=rad;
}
}
void display(void)
{
glClear (GL_COLOR_BUFFER_BIT);
arena();
start(); //start the game
comments();
next_level();
glutSwapBuffers();
}
void init() {
glClearColor (0.0, 0.0, 0.0, 0.0);
// glEnable(GL_DEPTH_TEST);
glMatrixMode(GL_PROJECTION);
// glLoadIdentity();
// glShadeModel(GL_SMOOTH);
glOrtho(-1000.0, 1000.0, -1000.0, 1000.0, -1000.0, 1000.0);
}
int main(int argc, char** argv)
{
glutInit(&argc, argv);
glutInitDisplayMode(GLUT_DOUBLE | GLUT_RGBA | GLUT_DEPTH);
glutInitDisplayMode (GLUT_SINGLE | GLUT_RGB);
glutInitWindowSize (700,700);
glutInitWindowPosition (100,-100);
glutCreateWindow ("BLASTERBALL 1.1");
init ();
glutDisplayFunc(display);
glutKeyboardFunc(processNormalKeys);
glutSpecialFunc(pressKey);
glutMainLoop();
return 0;
}
Well you have 2 glutInitDisplayMode() calls and the second one specifies a GLUT_SINGLE color buffer, you need to specify GLUT_DOUBLE and delete one of the calls. If you use the depth buffer, be sure to clear it along with the color buffer.
I commented the 2nd glutDisplayMode() call with GLUT_SINGLE then the output screen is like pause there is no effect of keystrokes.
and yeah along with this there is one problem when I minimize the game window and open other one then the whole game is again from starting stage.
glutPostRedisplay() is your friend, check the docs.
where should I use it ??
Check the docs, call it when you want to redraw.
I have used glutPostRedisplay() in all functions like where I am using left arrow key and others. But still the output is just picture there is no animation.