move PCMStream to audio

src/logic/scripting/lua/lua_engine.cpp

@@ -131,7 +131,6 @@ void lua::init_state(State* L, StateType stateType) {
     newusertype<LuaHeightmap>(L);
     newusertype<LuaVoxelFragment>(L);
     newusertype<LuaCanvas>(L);
-    newusertype<LuaPCMStream>(L);
 }
 
 void lua::initialize(const EnginePaths& paths, const CoreParameters& params) {
@@ -186,5 +185,12 @@ State* lua::create_state(const EnginePaths& paths, StateType stateType) {
         }
         pop(L);
     }
+    newusertype<LuaPCMStream>(L);
+    if (getglobal(L, "audio")) {
+        if (getglobal(L, "__vc_PCMStream")) {
+            setfield(L, "PCMStream");
+        }
+        pop(L);
+    }
     return L;
 }

src/logic/scripting/lua/usertypes/lua_type_pcmstream.hpp

@@ -18,7 +18,7 @@ namespace lua {
             return TYPENAME;
         }
         static int createMetatable(lua::State*);
-        inline static std::string TYPENAME = "PCMStream";
+        inline static std::string TYPENAME = "__vc_PCMStream";
     private:
         std::shared_ptr<audio::MemoryPCMStream> stream;
     };