add component ARGS variable

res/content/base/entities/drop.json

@@ -1,5 +1,5 @@
 {
-    "hitbox": [0.2, 0.2, 0.2],
+    "hitbox": [0.2, 0.125, 0.2],
     "triggers": [
         [-0.2, -0.2, -0.2, 0.2, 0.2, 0.2]
     ]

src/logic/scripting/lua/libentity.cpp

@@ -31,7 +31,11 @@ static int l_spawn(lua::State* L) {
     auto defname = lua::tostring(L, 1);
     auto& def = content->entities.require(defname);
     auto pos = lua::tovec3(L, 2);
-    level->entities->spawn(def, pos);
+    dynamic::Value args = dynamic::NONE;
+    if (lua::gettop(L) > 2) {
+        args = lua::tovalue(L, 3);
+    }
+    level->entities->spawn(def, pos, args);
     return 1;
 }
 

src/logic/scripting/scripting.cpp

@@ -256,7 +256,12 @@ bool scripting::on_item_break_block(Player* player, const ItemDef* item, int x,
     });
 }
 
-scriptenv scripting::on_entity_spawn(const EntityDef& def, entityid_t eid, entity_funcs_set& funcsset) {
+scriptenv scripting::on_entity_spawn(
+    const EntityDef& def, 
+    entityid_t eid, 
+    entity_funcs_set& funcsset,
+    dynamic::Value args
+) {
     auto L = lua::get_main_thread();
     lua::requireglobal(L, STDCOMP);
     if (lua::getfield(L, "new_Entity")) {
@@ -266,6 +271,8 @@ scriptenv scripting::on_entity_spawn(const EntityDef& def, entityid_t eid, entit
     auto entityenv = create_entity_environment(get_root_environment(), -1);
     lua::get_from(L, lua::CHUNKS_TABLE, def.scriptName, true);
     lua::pushenv(L, *entityenv);
+    lua::pushvalue(L, args);
+    lua::setfield(L, "ARGS");
     lua::setfenv(L);
     lua::call_nothrow(L, 0, 0);
 

src/logic/scripting/scripting.hpp

@@ -76,7 +76,12 @@ namespace scripting {
     /// @return true if prevents default action
     bool on_item_break_block(Player* player, const ItemDef* item, int x, int y, int z);
 
-    scriptenv on_entity_spawn(const EntityDef& def, entityid_t eid, entity_funcs_set&);
+    scriptenv on_entity_spawn(
+        const EntityDef& def, 
+        entityid_t eid, 
+        entity_funcs_set&,
+        dynamic::Value args
+    );
     bool on_entity_despawn(const EntityDef& def, const Entity& entity);
     bool on_entity_grounded(const Entity& entity, float force);
     bool on_entity_fall(const Entity& entity);

src/objects/Entities.cpp

@@ -30,7 +30,7 @@ void Entity::destroy() {
 Entities::Entities(Level* level) : level(level) {
 }
 
-entityid_t Entities::spawn(EntityDef& def, glm::vec3 pos) {
+entityid_t Entities::spawn(EntityDef& def, glm::vec3 pos, dynamic::Value args) {
     auto entity = registry.create();
     glm::vec3 size(1);
     auto id = nextID++;
@@ -55,7 +55,7 @@ entityid_t Entities::spawn(EntityDef& def, glm::vec3 pos) {
     }
     auto& scripting = registry.emplace<Scripting>(entity, entity_funcs_set {}, nullptr);
     entities[id] = entity;
-    scripting.env = scripting::on_entity_spawn(def, id, scripting.funcsset);
+    scripting.env = scripting::on_entity_spawn(def, id, scripting.funcsset, std::move(args));
     return id;
 }
 

src/objects/Entities.hpp

@@ -3,6 +3,7 @@
 
 #include "../typedefs.hpp"
 #include "../physics/Hitbox.hpp"
+#include "../data/dynamic.hpp"
 
 #include <vector>
 #include <optional>
@@ -131,7 +132,7 @@ public:
     void renderDebug(LineBatch& batch, const Frustum& frustum);
     void render(Assets* assets, ModelBatch& batch, const Frustum& frustum);
 
-    entityid_t spawn(EntityDef& def, glm::vec3 pos);
+    entityid_t spawn(EntityDef& def, glm::vec3 pos, dynamic::Value args=dynamic::NONE);
 
     std::optional<Entity> get(entityid_t id) {
         const auto& found = entities.find(id);