Game Development Reference
In-Depth Information
The
_hasFloated
property will ensure the player can only open the umbrella
once while in the air. And when we set
_floating
to
true
, we give the
_player.y
vector a boost.
3. We begin the update method of
_player
with:
void Player::update (float dt) {
if (_speed + P_ACCELERATION <= _maxSpeed) {
_speed += P_ACCELERATION;
} else {
_speed = _maxSpeed;
}
_vector.x = _speed;
The game will increase
_maxSpeed
of the
_player
object as time goes on,
making the game more difficult. These first lines make the change from the
_players
current
_speed
up to
_maxSpeed
a bit smoother and not an imme-
diate change.
Note
Victorian Rush Hour has no levels, so it's important to figure out a way to make it
incrementally harder to play, and yet not impossible. Finding that sweet spot in
your logic may take some time and it's one more reason to test game ideas as soon
as possible. Here we make the game harder by increasing the player's speed and
the size of the gaps between buildings. These are updated inside a countdown in
the main loop.
4. Next, we update the
_player
object based on its
_state
of movement:
switch (_state) {
case kPlayerMoving:
_vector.y -= FORCE_GRAVITY;
if (_hasFloated) _hasFloated = false;
break;
case kPlayerFalling:
if (_floating ) {
