+void Entity::StartAnimation(app::State &ctrl) {
+ runner.Start(ctrl);
+}
+
+void Entity::StopAnimation() {
+ runner.Stop();
+}
+
+void Entity::AddFollower(Entity *f) {
+ if (follower) {
+ follower->AddFollower(f);
+ } else {
+ follower = f;
+ }
+}
+
+void Entity::RemoveFollower(Entity *f) {
+ if (follower == f) {
+ follower = follower->follower;
+ } else if (follower) {
+ follower->RemoveFollower(f);
+ }
+}
+
+void Entity::SetAnimation(const graphics::Animation *a) {
+ animation = a;
+ runner.ChangeAnimation(animation);
+}
+
+
+void Entity::UpdateVelocity() {
+ if (speed == 0.0f) {
+ velocity = Vector<float>();
+ return;
+ }
+ switch (orientation) {
+ case ORIENTATION_NORTH:
+ velocity = Vector<float>(0.0f, -speed);
+ break;
+ case ORIENTATION_EAST:
+ velocity = Vector<float>(speed, 0.0f);
+ break;
+ case ORIENTATION_SOUTH:
+ velocity = Vector<float>(0.0f, speed);
+ break;
+ case ORIENTATION_WEST:
+ velocity = Vector<float>(-speed, 0.0f);
+ break;
+ }
+}
+
+
+bool Entity::TileLock(const geometry::Vector<int> &tileSize) const {
+ // TODO: change position to point to the top-left corner of a tile
+ Vector<int> tilePosition(position);
+ return (tilePosition.X() % tileSize.X() == 0) && (tilePosition.Y() % tileSize.Y() == 0);