From 617017d9795967b1e50134db7706293e616c8f14 Mon Sep 17 00:00:00 2001
From: MihailRis <mexaruc@gmail.com>
Date: Mon, 12 Feb 2024 03:22:08 +0300
Subject: [PATCH] content-pack specific variables PACK_ENV and PACK_ID

---
 src/content/ContentLoader.cpp     |  2 +-
 src/logic/scripting/LuaState.cpp  |  5 +++++
 src/logic/scripting/LuaState.h    |  1 +
 src/logic/scripting/scripting.cpp | 12 ++++++++++--
 src/logic/scripting/scripting.h   |  2 ++
 5 files changed, 19 insertions(+), 3 deletions(-)

diff --git a/src/content/ContentLoader.cpp b/src/content/ContentLoader.cpp
index 4f803ec0..740ad1de 100644
--- a/src/content/ContentLoader.cpp
+++ b/src/content/ContentLoader.cpp
@@ -274,7 +274,7 @@ void ContentLoader::loadItem(ItemDef& def, std::string full, std::string name) {
 void ContentLoader::load(ContentBuilder& builder) {
     std::cout << "-- loading pack [" << pack->id << "]" << std::endl;
 
-    auto runtime = new ContentPackRuntime(*pack, scripting::create_environment());
+    auto runtime = new ContentPackRuntime(*pack, scripting::create_pack_environment(*pack));
     builder.add(runtime);
     env = runtime->getEnvironment()->getId();
 
diff --git a/src/logic/scripting/LuaState.cpp b/src/logic/scripting/LuaState.cpp
index 662994eb..2ae3c085 100644
--- a/src/logic/scripting/LuaState.cpp
+++ b/src/logic/scripting/LuaState.cpp
@@ -181,6 +181,11 @@ int lua::LuaState::pushenv(int env) {
     return 0;
 }
 
+int lua::LuaState::pushvalue(int idx) {
+    lua_pushvalue(L, idx);
+    return 1;
+}
+
 int lua::LuaState::pushglobals() {
     lua_pushvalue(L, LUA_GLOBALSINDEX);
     return 1;
diff --git a/src/logic/scripting/LuaState.h b/src/logic/scripting/LuaState.h
index 9c049bc1..6d606c5e 100644
--- a/src/logic/scripting/LuaState.h
+++ b/src/logic/scripting/LuaState.h
@@ -32,6 +32,7 @@ namespace lua {
         int pushnumber(luanumber x);
         int pushstring(const std::string& str);
         int pushenv(int env);
+        int pushvalue(int idx);
         int pushnil();
         int pushglobals();
         void pop(int n=1);
diff --git a/src/logic/scripting/scripting.cpp b/src/logic/scripting/scripting.cpp
index 124a9ca8..4baea4b3 100644
--- a/src/logic/scripting/scripting.cpp
+++ b/src/logic/scripting/scripting.cpp
@@ -95,6 +95,16 @@ std::unique_ptr<Environment> scripting::create_environment(int parent) {
     return std::make_unique<Environment>(state->createEnvironment(parent));
 }
 
+std::unique_ptr<Environment> scripting::create_pack_environment(const ContentPack& pack) {
+    int id = state->createEnvironment(0);
+    state->pushenv(id);
+    state->pushvalue(-1);
+    state->setfield("PACK_ENV");
+    state->pushstring(pack.id);
+    state->setfield("PACK_ID");
+    return std::make_unique<Environment>(id);
+}
+
 void scripting::on_world_load(Level* level, BlocksController* blocks) {
     scripting::level = level;
     scripting::content = level->content;
@@ -230,8 +240,6 @@ bool register_event(int env, const std::string& name, const std::string& id) {
         // remove previous name
         state->pushnil();
         state->setfield(name, -3);
-
-        std::cout << id << std::endl;
         // add new global name
         state->setglobal(id);
         state->pop();
diff --git a/src/logic/scripting/scripting.h b/src/logic/scripting/scripting.h
index 13e7bb1d..bd51a886 100644
--- a/src/logic/scripting/scripting.h
+++ b/src/logic/scripting/scripting.h
@@ -9,6 +9,7 @@ class LuaState;
 
 class Engine;
 class Content;
+class ContentPack;
 class ContentIndices;
 class Level;
 class Block;
@@ -52,6 +53,7 @@ namespace scripting {
     );
 
     std::unique_ptr<Environment> create_environment(int parent=0);
+    std::unique_ptr<Environment> create_pack_environment(const ContentPack& pack);
 
     void on_world_load(Level* level, BlocksController* blocks);
     void on_world_save();