From 6bf23e5cac1e02a0d66771869a1e54b40c883cb7 Mon Sep 17 00:00:00 2001
From: MihailRis <mexaruc@gmail.com>
Date: Sun, 16 Jun 2024 22:07:42 +0300
Subject: [PATCH] add bytearray lua-style appending support

---
 src/logic/scripting/lua/lua_custom_types.cpp | 9 ++++++---
 1 file changed, 6 insertions(+), 3 deletions(-)

diff --git a/src/logic/scripting/lua/lua_custom_types.cpp b/src/logic/scripting/lua/lua_custom_types.cpp
index 03162449..2983e1b1 100644
--- a/src/logic/scripting/lua/lua_custom_types.cpp
+++ b/src/logic/scripting/lua/lua_custom_types.cpp
@@ -105,11 +105,14 @@ static int l_bytearray_meta_newindex(lua::State* L) {
         return 0;
     }
     auto& data = buffer->data();
-    auto index = tointeger(L, 2)-1;
-    if (static_cast<size_t>(index) > data.size()) {
+    auto index = static_cast<size_t>(tointeger(L, 2)-1);
+    auto value = tointeger(L, 3);
+    if (index >= data.size()) {
+        if (index == data.size()) {
+            data.push_back(static_cast<ubyte>(value));
+        }
         return 0;
     }
-    auto value = tointeger(L, 3);
     data[index] = static_cast<ubyte>(value);
     return 0;
 }