int tick() {
// Handle user input
Direction in = get_direction();
if (in != NO_DIRECTION) {
push_move(move_list, in);
}
// Handle snake movement
update_direction(snake, move_list);
move_snake(snake);
// Draw everything
draw_frame(snake, food_list);
Collision collision = find_collision(snake, food_list, screen);
switch(collision){
case SNAKE:
case SCREEN:
return 0;
case FOOD:
grow_snake();
new_food();
break;
case NONE:
break;
}
snake_sleep();
return 1;
}
game::Snake& common::GameWorld::new_snake(const std::string& name, unsigned level)
{
game::Snake* obj = new game::Snake(*this, level, name);
objects_.push_back(std::unique_ptr<game::Snake>(obj));
new_food();
return *obj;
}
int main(int argc, char * argv[]) {
struct coord snake[DISP_SIZE];
struct coord dir;
struct coord food;
struct controller_handle * ch;
struct command cmd;
struct bl_timer * timer;
struct snake_config conf;
int i;
int snake_length;
int cmd_queue[CMD_QUEUE_SIZE];
int cmdq_read = 0;
int cmdq_write = 0;
int cmdq_last = 0;
int n_cmdq = 0;
conf.delay = 100000;
conf.rotate_x = 0;
conf.rotate_y = 0;
// Read configuration
if (!read_config(config_handler, &conf, "snake")) {
fprintf(stderr, "Error reading configuration\n");
return 1;
}
srand (time(NULL));
memset(snake, 0, DISP_SIZE * sizeof(struct coord));
snake[0].x = WIDTH / 2;
snake[0].y = HEIGHT / 2;
snake[0].x = WIDTH / 2 + 1;
snake[0].y = HEIGHT / 2;
snake_length = 2;
dir.x = -1;
dir.y = 0;
food = new_food(snake, snake_length);
ch = open_controller(CONTROLLER_TYPE_JOYSTICK |
CONTROLLER_TYPE_STDIN);
if (!ch) {
fprintf(stderr, "No joysticks/controllers found.\n");
return -1;
}
timer = bl_timer_create();
while(1) {
int n_wait = conf.delay - bl_timer_elapsed(timer);
if (n_wait < 1)
n_wait = 1;
cmd = read_command(ch, n_wait);
if (((cmd.number >= 'a' && cmd.number <= 'w') ||
(cmd.number >= 8 && cmd.number <= 11)) &&
cmd.number != cmdq_last &&
(cmd.value == 1 || cmd.value > 10000) &&
!n_cmdq < CMD_QUEUE_SIZE) {
fprintf(stderr, "Cmd: %d\r\n", cmd.number);
cmd_queue[cmdq_write++ % CMD_QUEUE_SIZE] =
cmd.number;
n_cmdq++;
cmdq_last = cmd.number;
}
if (bl_timer_elapsed(timer) < conf.delay)
continue;
if (n_cmdq > 0) {
switch(cmd_queue[cmdq_read++ % CMD_QUEUE_SIZE]) {
case KEY_UP:
case KEY_UP_K1:
if (dir.y == 0) {
dir.x = 0;
dir.y = -1;
}
break;
case KEY_DOWN:
case KEY_DOWN_K1:
if (dir.y == 0) {
dir.x = 0;
dir.y = 1;
}
break;
case KEY_LEFT:
case KEY_LEFT_K1:
if (dir.x == 0) {
dir.x = -1;
dir.y = 0;
}
break;
case KEY_RIGHT:
case KEY_RIGHT_K1:
if (dir.x == 0) {
dir.x = 1;
dir.y = 0;
}
break;
case KEY_QUIT:
case KEY_QUIT_K:
goto exit;
default:
break;
}
n_cmdq--;
}
if (snake[0].x == food.x &&
snake[0].y == food.y) {
snake_length++;
snake[snake_length] = snake[snake_length-1];
food = new_food(snake, snake_length);
}
for (i=snake_length-1; i>=1; --i)
snake[i] = snake[i-1];
snake[0].x += dir.x;
snake[0].y += dir.y;
if (conf.rotate_x) {
if (snake[0].x < 0)
snake[0].x = WIDTH - 1;
else if (snake[0].x >= WIDTH)
snake[0].x = 0;
}
if (conf.rotate_y) {
if (snake[0].y < 0)
snake[0].y = HEIGHT - 1;
else if (snake[0].y >= HEIGHT)
snake[0].y = 0;
}
if (snake[0].x < 0 || snake[0].x >= WIDTH ||
snake[0].y < 0 || snake[0].y >= HEIGHT) {
fprintf(stderr, "Wand du trottel\n\r");
goto exit;
}
for (i=1; i<snake_length; ++i) {
if (snake[0].x == snake[i].x &&
snake[0].y == snake[i].y) {
fprintf(stderr, "Nom nom nom\n\r");
goto exit;
}
}
send_field(snake, snake_length, food);
paint_field(snake, snake_length, food);
bl_timer_start(timer);
}
exit:
bl_timer_free(timer);
close_controller(ch);
return 0;
}
