int refresh_game()
{
char key;
fd_set set;
FD_ZERO(&set);
FD_SET(0, &set);
struct timeval timeout;
timeout.tv_sec = 0;
timeout.tv_usec= 4* 100*1000;
if (select(1, &set, NULL, NULL, &timeout) < 0)
return -1;
if(FD_ISSET(0,&set)){
while((key=getch())==-1);
if(key==' '||key== 'w'||key == 'W')
bird.y -=1;
else if(key=='q'||key=='Q')
return -1;
}
else
bird.y +=1;
move_wall();
draw_bird();
if(wether_crash()==1)
return -2;
return 1;
}
// Main loop.
void main_app_loop()
{
if (current_screen == SCREEN_GAMEPLAY)
{
// Find out how long the processor has been active (since boot or since sleep)
time_now_ms = pulse_get_millis();
// Check if it's been at least 10 ms since the box was last drawn
if (time_now_ms - time_last_box_drawn_ms >= game_speed)
{
score++;
// Change the color and speed up the walls when certain scores are reached
switch(score)
{
case 800:
wall_color = teal;
game_speed-=2;
break;
case 1600:
wall_color = blue;
game_speed-=2;
break;
case 2400:
wall_color = purple;
game_speed-=2;
break;
case 3200:
wall_color = pink;
game_speed-=2;
break;
case 4000:
wall_color = orange;
game_speed-=2;
break;
case 4800:
wall_color = red;
game_speed-=2;
break;
}
// Erase the old ball and walls by drawing over them
draw_ball(ball_x,ball_y, COLOR_BLACK24);
for (int i = 0; i < NUM_WALLS; i++)
draw_wall(wall_y[i],wall_gap_x[i], COLOR_BLACK24);
// Move the ball based on user input
if(press && ball_x < SCREEN_WIDTH - BALL_SIZE)
ball_x++;
else if (!press && ball_x > 0)
ball_x--;
// Move the walls up
for (int i = 0; i < NUM_WALLS; i++)
move_wall(i);
// Check for collisions between the ball and the wall
bool collision = false;
for (int i = 0; i < NUM_WALLS; i++)
{
if ((ball_y == wall_y[i] - BALL_SIZE + 1 || ball_y == wall_y[i] - BALL_SIZE)&& (ball_x < wall_gap_x[i] || ball_x > wall_gap_x[i] + GAP_WIDTH - BALL_SIZE))
{
ball_y = wall_y[i] - BALL_SIZE;
collision = true;
}
}
// check if ball reached the top
if (ball_y == start_y)
game_over();
else
{
if (!collision && ball_y < SCREEN_HEIGHT-BALL_SIZE-1)
ball_y = (ball_y + 1);
// Draw the new box and walls
draw_game_elements();
// update the time_last_box_draw_ms variable
time_last_box_drawn_ms = time_now_ms;
}
}
}
else if (current_screen == SCREEN_CLOCK)
pulse_get_time_date(¤t_time);
}
