#include "hitscan_muzzle.hpp"
#include "damageable_entity.hpp"
#include "godot_cpp/variant/callable.hpp"
#include "utils/godot_macros.hpp"
#include <godot_cpp/classes/physics_direct_space_state3d.hpp>
#include <godot_cpp/classes/physics_ray_query_parameters3d.hpp>
#include <godot_cpp/classes/world3d.hpp>
#include <godot_cpp/variant/utility_functions.hpp>

void HitscanMuzzle::_bind_methods() {
#define CLASSNAME HitscanMuzzle
    GDFUNCTION(fire); // allow fire() to be called from animation tracks
}

void HitscanMuzzle::_ready() {
    this->set_enabled(false);
    this->set_physics_process(false);
}

void HitscanMuzzle::_physics_process(double) {
    this->fire_physics_check();
    this->set_physics_process(false); // since _physics_process is only used for fire_physics_check, just disable it immediately
}

void HitscanMuzzle::fire() {
    this->set_physics_process(true); // offload physics checks to physics process to avoid multithreading issues
}

void HitscanMuzzle::fire_physics_check() {
    this->force_raycast_update(); // since we disabled automatic updating (set_enabled(false) in _ready), we'll have to force update here.
    gd::Object *hit{this->get_collider()};
    if(hit == nullptr) return; // nothing was hit
    // see if the hit object can be damaged, damage if so
    DamageableEntity *damage_iface{dynamic_cast<DamageableEntity*>(hit)};
    if(damage_iface == nullptr) return; // hit object can't be damaged.
    damage_iface->damage();
}