Merge pull request #866 from MihailRis/new-entity-event

add on_player_set entity component event

doc/en/scripting/ecs.md

@@ -264,3 +264,9 @@ function on_used(playerid: int)
 ```
 
 Called when an entity is used (RMB by entity). The player ID is passed as an argument.
+
+```lua
+function on_player_set(playerid: int)
+```
+
+Called when an entity is attached to a player.

doc/ru/scripting/ecs.md

@@ -265,3 +265,8 @@ function on_used(playerid: int)
 
 Вызывается при использовании сущности (ПКМ по сущности). ID игрока передается в качестве аргумента.
 
+```lua
+function on_player_set(playerid: int)
+```
+
+Вызывается при прикреплении сущности к игроку.

res/scripts/components/mob.lua

@@ -142,14 +142,16 @@ end
 
 function is_flight() return flight end
 
-function set_flight(flag) flight = flag end
+function set_flight(flag)
+    flight = flag
+    body:set_gravity_scale(flight and 0.0 or props.gravity_scale)
+end
 
 local prev_angle = (vec2.angle({dir[3], dir[1]})) % 360
 
 function on_physics_update(delta)
     local grounded = body:is_grounded()
     body:set_vdamping(flight)
-    body:set_gravity_scale(flight and 0.0 or props.gravity_scale)
     body:set_linear_damping(
         (flight or not grounded) and props.air_damping or props.ground_damping
     )

res/scripts/components/player.lua

@@ -58,16 +58,12 @@ local function process_player_inputs(pid, rot, delta)
     end
 end
 
-local prepared = false
-body:set_enabled(false)
-mob.set_flight(true)
+function on_player_set(pid)
+    mob.set_flight(player.is_flight(pid))
+    body:set_body_type(player.is_noclip(pid) and "kinematic" or "dynamic")
+end
 
 function on_physics_update(delta)
-    if not prepared then
-        prepared = true
-        body:set_enabled(true)
-    end
-
     local pid = entity:get_player()
     if pid == -1 then
         return

src/logic/LevelController.cpp

@@ -82,7 +82,6 @@ void LevelController::update(float delta, bool pause) {
             continue;
         }
         player->rotationInterpolation.updateTimer(delta);
-        player->updateEntity();
         glm::vec3 position = player->getPosition();
         player->chunks->configure(
             glm::floor(position.x),
@@ -96,9 +95,9 @@ void LevelController::update(float delta, bool pause) {
             *player,
             player.get() == clientPlayer
         );
+        player->updateEntity();
     }
     if (!pause) {
-        // update all objects that needed
         blocks->update(delta, settings.chunks.padding.get());
         level->entities->update(delta);
         for (const auto& [_, player] : *level->players) {

src/logic/scripting/scripting.hpp

@@ -142,6 +142,7 @@ namespace scripting {
     void on_entity_grounded(const Entity& entity, float force);
     void on_entity_fall(const Entity& entity);
     void on_entity_save(const Entity& entity);
+    void on_entity_player_set(const Entity& entity, int64_t pid);
     void on_entities_update(int tps, int parts, int part);
     void on_entities_physics_update(float delta);
     void on_entities_render(float delta);

src/logic/scripting/scripting_entities.cpp

@@ -71,6 +71,7 @@ static void init_component_events(
     funcsset.on_aim_off = lua::hasfield(L, "on_aim_off");
     funcsset.on_attacked = lua::hasfield(L, "on_attacked");
     funcsset.on_used = lua::hasfield(L, "on_used");
+    funcsset.on_player_set = lua::hasfield(L, "on_player_set");
     lua::pop(L);
 }
 
@@ -238,6 +239,15 @@ void scripting::on_entity_save(const Entity& entity) {
     );
 }
 
+void scripting::on_entity_player_set(const Entity& entity, int64_t pid) {
+    process_entity_callback(
+        entity,
+        "on_player_set",
+        &EntityFuncsSet::on_player_set,
+        [pid](auto L) { return lua::pushinteger(L, pid); }
+    );
+}
+
 void scripting::on_sensor_enter(
     const Entity& entity, size_t index, entityid_t oid
 ) {

src/objects/Entity.cpp

@@ -113,6 +113,11 @@ int64_t Entity::getPlayer() const {
 }
 
 void Entity::setPlayer(int64_t id) {
-    registry.get<EntityId>(entity).player = id;
+    auto& eid = registry.get<EntityId>(entity);
+    if (eid.player == id) {
+        return;
+    }
+    eid.player = id;
+    scripting::on_entity_player_set(*this, id);
 }
 

src/objects/Player.cpp

@@ -81,7 +81,7 @@ void Player::updateEntity() {
     }
 }
 
-Hitbox* Player::getHitbox() {
+Hitbox* Player::getHitbox() const {
     if (auto entity = level.entities->get(eid)) {
         return &entity->getRigidbody().hitbox;
     }

src/objects/Player.hpp

@@ -135,7 +135,7 @@ public:
 
     bool isCurrentCameraBuiltin() const;
 
-    Hitbox* getHitbox();
+    Hitbox* getHitbox() const;
 
     void setSpawnPoint(glm::vec3 point);
     glm::vec3 getSpawnPoint() const;

src/objects/ScriptComponents.hpp

@@ -17,6 +17,7 @@ struct EntityFuncsSet {
     bool on_aim_off;
     bool on_attacked;
     bool on_used;
+    bool on_player_set;
 };
 
 struct UserComponent {