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keyboard.h
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#define TIMER_ID 0
#define TIMER_INTERVAL 20
static void on_timer(int id);
static void on_keyboard(unsigned char key, int x, int y){
switch(key){
//oslobanjamo memoriju i prekidamo program
case 27:
glDeleteTextures(10, names);
exit(0);
break;
case 'r':
//restartujemo igru i sve parametre postavljamo na pocetne
animation_ongoing = 0;
srand(time(NULL));
k_x = -(polje/2-k_size/2) + (polje-k_size)*rand()/(float) RAND_MAX;
k_y = -(polje/2-k_size/2) + (polje-k_size)*rand()/(float) RAND_MAX;
k_vx = k_size*0.01;
k_vy = k_size*0.01;
srand(time(NULL));
p_x = -(polje-p_size/2) + (2*polje-p_size)*rand()/(float) RAND_MAX;
p_y = -(polje-p_size/2) + (2*polje-p_size)*rand()/(float) RAND_MAX;
p_vx = -p_size/2 + p_size*rand()/(float)RAND_MAX;
p_vy = -p_size/2 + p_size*rand()/(float)RAND_MAX;
glutPostRedisplay();
break;
case 'g':
case 'G':
//pokrecemo animaciju
if(!animation_ongoing){
animation_ongoing = 1;
glutTimerFunc(TIMER_INTERVAL, on_timer, TIMER_ID);
}
break;
//zaustavljamo animaciju
case 's':
case 'S':
animation_ongoing = 0;
break;
//uvecavamo brzinu dva puta
case 'f':
case 'F':
k_vx*=2;
k_vy*=2;
break;
//usporavamo duplo
case 'd':
case 'D':
k_vx/=2;
k_vy/=2;
break;
//pomeramo levo gornjeg i donjeg cuvara ako imamo gde
case '4':
if(lgornji_x > -polje){
lgornji_x-=l_size;
ldonji_x-=l_size;
glutPostRedisplay();
}
break;
//pomeramo desno gornjeg i donjeg cuvara ako ima mesta desno
case '6':
if(lgornji_x <polje){
lgornji_x+=l_size;
ldonji_x+=l_size;
glutPostRedisplay();
}
break;
//levi i desni cuvar idu gore ako vec nisu na vrhu
case '8':
if(llevi_y<polje){
llevi_y+=l_size;
ldesni_y+=l_size;
glutPostRedisplay();
}
break;
//levi i desni cuvar idu dole ako nisu na dnu
case '2':
if(llevi_y>-polje){
llevi_y-=l_size;
ldesni_y-=l_size;
glutPostRedisplay();
}
break;
case '7':
visina+=0.1;
glutPostRedisplay();
break;
case '1':
visina-=0.1;
glutPostRedisplay();
break;
case '0':
sirina-=0.1;
glutPostRedisplay();
break;
case '.':
sirina+=0.1;
glutPostRedisplay();
break;
case '/':
parametar-=0.1;
parametar2 = visina-1;
glutPostRedisplay();
break;
case '*':
parametar+=0.1;
parametar2 = visina-1;
glutPostRedisplay();
break;
}
}