add Rigidbody.is_enabled, .set_enabled

src/logic/scripting/lua/libentity.cpp

@@ -47,14 +47,14 @@ static int l_set_pos(lua::State* L) {
 
 static int l_get_vel(lua::State* L) {
     if (auto entity = get_entity(L, 1)) {
-        return lua::pushvec3_arr(L, entity->getHitbox().velocity);
+        return lua::pushvec3_arr(L, entity->getRigidbody().hitbox.velocity);
     }
     return 0;
 }
 
 static int l_set_vel(lua::State* L) {
     if (auto entity = get_entity(L, 1)) {
-        entity->getHitbox().velocity = lua::tovec3(L, 2);
+        entity->getRigidbody().hitbox.velocity = lua::tovec3(L, 2);
     }
     return 0;
 }
@@ -73,6 +73,20 @@ static int l_set_rot(lua::State* L) {
     return 0;
 }
 
+static int l_is_enabled(lua::State* L) {
+    if (auto entity = get_entity(L, 1)) {
+        lua::pushboolean(L, entity->getRigidbody().enabled);
+    }
+    return 0;
+}
+
+static int l_set_enabled(lua::State* L) {
+    if (auto entity = get_entity(L, 1)) {
+        entity->getRigidbody().enabled = lua::toboolean(L, 2);
+    }
+    return 0;
+}
+
 const luaL_Reg entitylib [] = {
     {"spawn", lua::wrap<l_spawn>},
     {NULL, NULL}
@@ -87,6 +101,8 @@ const luaL_Reg entitylib [] = {
  };
 
 const luaL_Reg rigidbodylib [] = {
+    {"is_enabled", lua::wrap<l_is_enabled>},
+    {"set_enabled", lua::wrap<l_set_enabled>},
     {"get_vel", lua::wrap<l_get_vel>},
     {"set_vel", lua::wrap<l_set_vel>},
     {NULL, NULL}

src/objects/Entities.cpp

@@ -28,15 +28,19 @@ entityid_t Entities::spawn(EntityDef& def, glm::vec3 pos) {
     auto id = nextID++;
     registry.emplace<EntityId>(entity, static_cast<entityid_t>(id));
     registry.emplace<Transform>(entity, pos, size/4.0f, glm::mat3(1.0f));
-    registry.emplace<Hitbox>(entity, pos, def.hitbox);
+    registry.emplace<Rigidbody>(entity, true, Hitbox {pos, def.hitbox});
     entities[id] = entity;
     return id;
 }
 
 void Entities::updatePhysics(float delta){
-    auto view = registry.view<Transform, Hitbox>();
+    auto view = registry.view<Transform, Rigidbody>();
     auto physics = level->physics.get();
-    for (auto [entity, transform, hitbox] : view.each()) {
+    for (auto [entity, transform, rigidbody] : view.each()) {
+        if (!rigidbody.enabled) {
+            continue;
+        }
+        auto& hitbox = rigidbody.hitbox;
         physics->step(
             level->chunks.get(),
             &hitbox,

src/objects/Entities.hpp

@@ -22,6 +22,11 @@ struct Transform {
     void refresh();
 };
 
+struct Rigidbody {
+    bool enabled = true;
+    Hitbox hitbox;
+};
+
 class Level;
 class Assets;
 class LineBatch;
@@ -45,8 +50,8 @@ public:
         return registry.get<Transform>(entity);
     }
 
-    Hitbox& getHitbox() const {
-        return registry.get<Hitbox>(entity);
+    Rigidbody& getRigidbody() const {
+        return registry.get<Rigidbody>(entity);
     }
 
     entityid_t getUID() const {