Position Player::GetNextPosition(double dt) const {
const double speed = 7;
const Position pos = GetPosition();
const Direction dir = GetDirection();
return Position(pos.x + dir.x() * dt * speed,
pos.y + dir.y() * dt * speed);
}
static double signed_distance_on_direction(
const Point &point0,
const Point &point1,
const Direction &direction) {
return
((point1.x() - point0.x()) * direction.x()
+
(point1.y() - point0.y()) * direction.y());
}
void Snake::game_loop()
{
update_positions();
intersect();
render();
if (finished())
{
gameover();
return;
}
Timers::oneshot(
std::chrono::milliseconds(_head_dir.x() == 0 ? 120 : 70),
[this](auto) { this->game_loop(); }
);
}
