/**
* \brief Returns whether a jumper is considered as an obstacle in this state.
* \param jumper a jumper
* \return true if the sensor is an obstacle in this state
*/
bool Hero::State::is_jumper_obstacle(Jumper& jumper) {
if (hero.overlaps(jumper)) {
// The hero may overlap the jumper if he arrived by another direction
// and thus did not activate it.
// This is allowed and can be used to leave water pools for example.
return false;
}
if (!can_take_jumper()) {
// If jumpers cannot be used in this state, consider them as obstacles.
return true;
}
// At this point, we know that the jumper can be activated.
if (jumper.is_in_jump_position(hero)) {
// If the hero is correctly placed (ready to jump), make the jumper
// obstacle so that the player has to move in the jumper's direction
// during a small delay before jumping.
// This also prevents the hero to be partially inside the jumper when
// starting the jump.
return true;
}
// But if the hero is not placed correctly, make the jumper traversable so
// that the smooth movement can slide to it.
return false;
}
/**
* \brief Returns whether a jumper is considered as an obstacle in this state
* for the hero at the specified position.
* \param jumper A jumper.
* \param candidate_position Position of the hero to test.
* \return \c true if the jumper is an obstacle in this state with this
* hero position.
*/
bool Hero::BaseState::is_jumper_obstacle(
const Jumper& jumper, const Rectangle& candidate_position) const {
const Hero& hero = get_entity();
if (jumper.overlaps_jumping_region(hero.get_bounding_box(), false)) {
// The hero already overlaps the active part of the jumper.
// This is authorized if he arrived from another direction
// and thus did not activate it.
// This can be used to leave water pools for example.
return false;
}
if (!jumper.overlaps_jumping_region(candidate_position, false)) {
// The candidate position is in the inactive region: always accept that.
return false;
}
if (!can_take_jumper()) {
// If jumpers cannot be used in this state, consider their active region
// as obstacles and their inactive region as traversable.
// The active region should be an obstacle.
return true;
}
// At this point, we know that the jumper can be activated.
const bool hero_in_jump_position =
jumper.is_in_jump_position(hero, hero.get_bounding_box(), false);
const bool candidate_in_jump_position =
jumper.is_in_jump_position(hero, candidate_position, false);
if (candidate_in_jump_position) {
// Wants to move to a valid jump position: accept.
return false;
}
if (hero_in_jump_position) {
// If the hero is already correctly placed (ready to jump),
// make the jumper obstacle so that the player has to move in the
// jumper's direction during a small delay before jumping.
// This also prevents the hero to get inside the jumper's active region.
return true;
}
const bool candidate_in_extended_jump_position =
jumper.is_in_jump_position(hero, candidate_position, true);
if (candidate_in_extended_jump_position) {
// Wants to get inside the active region from an end of the jumper:
// don't accept this.
return true;
}
if (!jumper.is_jump_diagonal() &&
hero.is_moving_towards(jumper.get_direction() / 2)) {
// Special case: make the jumper traversable so
// that the smooth movement can slide to it.
return false;
}
if (!jumper.is_jump_diagonal() &&
get_name() == "swimming" && // TODO use inheritance instead
hero.is_moving_towards(((jumper.get_direction() / 2) + 2) % 4)
) {
// Other special case: trying to enter the jumper the reverse way while
// swimming: we accept this to allow the hero to leave water pools.
// TODO I'm not sure this behavior is really a good idea.
// This may change in a future version.
return false;
}
return true;
}