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feat: implemented enemy wretched patrol and chase states

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This commit is contained in:
Sara 2025-07-21 15:05:02 +02:00
parent 1b0e4384b9
commit 9517588415
12 changed files with 224 additions and 17 deletions
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57
modules/wave_survival/enemies/enemy_wretched.cpp
View file

@ -10,6 +10,8 @@ void EnemyWretched::_bind_methods() {
void EnemyWretched::ready() {
if (StateMachine * fsm{ cast_to<StateMachine>(get_node(NodePath("%StateMachine"))) }) {
fsm->add_state(memnew(WretchedPatrolState));
fsm->add_state(memnew(WretchedChaseState));
fsm->add_state(memnew(WretchedAttackState));
}
}
@ -28,28 +30,69 @@ void EnemyWretched::_notification(int what) {
void WretchedState::set_target(Node *node) {
this->target = cast_to<EnemyWretched>(node);
this->nav = this->target->get_nav();
this->unit = this->target->get_unit();
}
EnemyWretched *WretchedState::get_target() const {
return this->target;
}
NpcUnit *WretchedState::get_unit() const {
return this->unit;
}
NavigationAgent3D *WretchedState::get_nav() const {
return this->nav;
}
void WretchedPatrolState::enter_state() {
this->nav = get_target()->get_nav();
this->path = get_target()->get_unit()->get_patrol_path();
float const max_speed{ get_target()->get_unit()->get_patrol_speed() };
float const max_speed{ get_unit()->get_patrol_speed() };
get_target()->set_movement_speed(max_speed);
this->nav->set_max_speed(max_speed);
get_nav()->set_max_speed(max_speed);
this->path_point = this->path->get_closest_point(get_target()->get_global_position());
this->nav->set_target_position(this->path->point_at(this->path_point));
get_nav()->set_target_position(this->path->point_at(this->path_point));
}
void WretchedPatrolState::process(double delta) {
if (this->nav->is_navigation_finished()) {
if (get_nav()->is_navigation_finished()) {
this->path_point += 1;
this->nav->set_target_position(this->path->point_at(this->path_point));
get_nav()->set_target_position(this->path->point_at(this->path_point));
}
Vector3 const direction{ get_target()->get_global_position().direction_to(this->nav->get_next_path_position()) };
Vector3 const direction{ get_target()->get_global_position().direction_to(get_nav()->get_next_path_position()) };
get_target()->set_movement_direction(Vector2{ direction.x, direction.z }.normalized());
}
String WretchedPatrolState::get_next_state() const {
if (get_target()->get_unit()->is_aware_of_player()) {
return WretchedChaseState::get_class_static();
}
return get_class();
}
void WretchedChaseState::enter_state() {
// TODO: replace this with a setting somewhere
get_target()->set_movement_speed(get_unit()->get_patrol_speed() * 2.f);
get_nav()->set_max_speed(get_unit()->get_patrol_speed() * 2.f);
get_nav()->set_target_position(PlayerBody::get_singleton()->get_global_position());
}
void WretchedChaseState::process(double delta) {
// TODO: optimize this with some checks to avoid re-pathing every frame
get_nav()->set_target_position(PlayerBody::get_singleton()->get_global_position());
Vector3 const direction{ get_target()->get_global_position().direction_to(get_nav()->get_next_path_position()) };
get_target()->set_movement_direction(Vector2{ direction.x, direction.z }.normalized());
}
String WretchedChaseState::get_next_state() const {
if (get_target()->get_global_position().distance_to(PlayerBody::get_singleton()->get_global_position()) < 2.f) {
return WretchedAttackState::get_class_static();
}
return get_class();
}
String WretchedAttackState::get_next_state() const {
return WretchedChaseState::get_class_static();
}

25
modules/wave_survival/enemies/enemy_wretched.h
View file

@ -4,6 +4,7 @@
#include "wave_survival/enemy_body.h"
#include "wave_survival/state.h"
class PatrolPath;
class NpcUnit;
class EnemyWretched : public EnemyBody {
GDCLASS(EnemyWretched, EnemyBody);
@ -23,9 +24,13 @@ class WretchedState : public State {
public:
virtual void set_target(Node *node) override;
EnemyWretched *get_target() const;
NpcUnit *get_unit() const;
NavigationAgent3D *get_nav() const;
private:
NpcUnit *unit{ nullptr };
EnemyWretched *target{ nullptr };
NavigationAgent3D *nav{ nullptr };
};
class WretchedPatrolState : public WretchedState {
@ -35,11 +40,29 @@ class WretchedPatrolState : public WretchedState {
public:
virtual void enter_state() override;
virtual void process(double delta) override;
virtual String get_next_state() const override;
private:
NavigationAgent3D *nav{ nullptr };
int path_point{ 0 };
PatrolPath *path{ nullptr };
};
class WretchedChaseState : public WretchedState {
GDCLASS(WretchedChaseState, WretchedState);
static void _bind_methods() {}
public:
virtual void enter_state() override;
virtual void process(double delta) override;
virtual String get_next_state() const override;
};
class WretchedAttackState : public WretchedState {
GDCLASS(WretchedAttackState, WretchedState);
static void _bind_methods() {}
public:
virtual String get_next_state() const override;
};
#endif // !ENEMY_WRETCHED_H