void pong(void)
{
enable_computer = 1;
paddle_touch_id[L] = -1;
paddle_touch_id[R] = -1;
// middle line
fb_add_rect(0, fb_height/2 - 1, fb_width, 1, WHITE);
score[L] = fb_add_text(0, fb_height/2 - SIZE_EXTRA*16 - 20, WHITE, SIZE_EXTRA, "0");
score[R] = fb_add_text(0, fb_height/2 + 20, WHITE, SIZE_EXTRA, "0");
paddles[L] = fb_add_rect(100, PADDLE_Y, PADDLE_W, PADDLE_H, WHITE);
paddles[R] = fb_add_rect(100, fb_height-PADDLE_Y-PADDLE_H, PADDLE_W, PADDLE_H, WHITE);
ball = fb_add_rect(0, 0, BALL_W, BALL_W, WHITE);
pong_spawn_ball(rand()%2);
pong_calc_movement();
add_touch_handler(&pong_touch_handler, NULL);
int step = 0;
volatile int run = 1;
while(run)
{
switch(get_last_key())
{
case KEY_POWER:
run = 0;
break;
case KEY_VOLUMEUP:
ball_speed += 5;
pong_spawn_ball(rand()%2);
pong_calc_movement();
step = 0;
break;
case KEY_VOLUMEDOWN:
if(ball_speed > 5)
ball_speed -= 5;
pong_spawn_ball(rand()%2);
pong_calc_movement();
step = 0;
break;
}
step = pong_do_movement(step);
fb_draw();
usleep(1000);
}
rm_touch_handler(&pong_touch_handler, NULL);
list_clear(&movement_steps, &free);
}
int pong_do_movement(int step)
{
if(!movement_steps[step])
{
pong_calc_movement();
return 0;
}
int col = movement_steps[step]->collision;
if(col == COL_NONE || col == COL_LEFT || col == COL_RIGHT)
{
ball->x = movement_steps[step]->x;
ball->y = movement_steps[step]->y;
if(enable_computer)
pong_handle_ai();
}
switch(col)
{
case COL_NONE:
return step+1;
case COL_TOP:
case COL_BOTTOM:
ball_speed_x = -ball_speed_x;
break;
case COL_LEFT:
case COL_RIGHT:
{
int s = col - 1;
if(ball->x+BALL_W >= paddles[s]->x && ball->x <= paddles[s]->x+PADDLE_W)
{
// Increase X speed according to distance from center of paddle.
ball_speed_x = (float)((ball->x + BALL_W/2) - (paddles[s]->x + PADDLE_W/2))/BALL_SPEED_MOD;
ball_speed_y = -ball_speed_y;
}
else
{
pong_add_score(!s);
for(col = 0; col < 1000; col += 16)
{
fb_request_draw();
usleep(16000);
}
pong_spawn_ball(s);
}
break;
}
}
pong_calc_movement();
return 0;
}
void pong(void)
{
enable_computer = 1;
paddle_touch_id[L] = -1;
paddle_touch_id[R] = -1;
score_val[L] = 0;
score_val[R] = 0;
fb_set_background(BLACK);
fb_text_proto *p = fb_text_create(0, 0, GRAYISH, SIZE_SMALL, "Press power button to go back");
p->style = STYLE_ITALIC;
fb_text *help = fb_text_finalize(p);
help->y = fb_height/2 - help->h*1.5;
center_text(help, 0, -1, fb_width, -1);
// middle line
fb_add_rect(0, fb_height/2 - 1, fb_width, 1, WHITE);
score[L] = fb_add_text(0, 0, WHITE, SIZE_EXTRA, "0");
score[L]->y = fb_height/2 - score[L]->h - 20*DPI_MUL;
score[R] = fb_add_text(0, fb_height/2 + 20*DPI_MUL, WHITE, SIZE_EXTRA, "0");
paddles[L] = fb_add_rect(100, PADDLE_Y, PADDLE_W, PADDLE_H, WHITE);
paddles[R] = fb_add_rect(100, fb_height-PADDLE_Y-PADDLE_H, PADDLE_W, PADDLE_H, WHITE);
ball = fb_add_rect(0, 0, BALL_W, BALL_W, WHITE);
pong_spawn_ball(rand()%2);
pong_calc_movement();
add_touch_handler(&pong_touch_handler, NULL);
int step = 0;
volatile int run = 1;
while(run)
{
switch(get_last_key())
{
case KEY_POWER:
run = 0;
break;
case KEY_VOLUMEUP:
ball_speed += 5;
pong_spawn_ball(rand()%2);
pong_calc_movement();
step = 0;
break;
case KEY_VOLUMEDOWN:
if(ball_speed > 5)
ball_speed -= 5;
pong_spawn_ball(rand()%2);
pong_calc_movement();
step = 0;
break;
}
step = pong_do_movement(step);
fb_request_draw();
usleep(16000);
}
rm_touch_handler(&pong_touch_handler, NULL);
list_clear(&movement_steps, &free);
}
