Addendum to PR 3402 (#3403)

Author: tederis

Client/mods/deathmatch/logic/luadefs/CLuaDrawingDefs.cpp

@@ -199,8 +199,8 @@ int CLuaDrawingDefs::DxDrawLine3D(lua_State* luaVM)
     argStream.ReadVector3D(vecEnd);
     argStream.ReadColor(color, 0xFFFFFFFF);
     argStream.ReadNumber(fWidth, 1);
-    if (bool bPostGUI = argStream.ReadIfNextIsBool())
-        renderStage = bPostGUI ? eRenderStage::POST_GUI : eRenderStage::POST_FX;
+    if (argStream.NextIsBool())
+        renderStage = argStream.ReadBool() ? eRenderStage::POST_GUI : eRenderStage::POST_FX;
     else
         argStream.ReadIfNextIsEnumString(renderStage, eRenderStage::POST_FX);
 
@@ -240,8 +240,8 @@ int CLuaDrawingDefs::DxDrawMaterialLine3D(lua_State* luaVM)
     argStream.ReadUserData(pMaterial);
     argStream.ReadNumber(fWidth);
     argStream.ReadColor(color, 0xFFFFFFFF);
-    if (bool bPostGUI = argStream.ReadIfNextIsBool())
-        renderStage = bPostGUI ? eRenderStage::POST_GUI : eRenderStage::POST_FX;
+    if (argStream.NextIsBool())
+        renderStage = argStream.ReadBool() ? eRenderStage::POST_GUI : eRenderStage::POST_FX;
     else
         argStream.ReadIfNextIsEnumString(renderStage, eRenderStage::POST_FX);
 
@@ -292,10 +292,11 @@ int CLuaDrawingDefs::DxDrawMaterialSectionLine3D(lua_State* luaVM)
     argStream.ReadUserData(pMaterial);
     argStream.ReadNumber(fWidth);
     argStream.ReadColor(color, 0xFFFFFFFF);
-    if (bool bPostGUI = argStream.ReadIfNextIsBool())
-        renderStage = bPostGUI ? eRenderStage::POST_GUI : eRenderStage::POST_FX;
+    if (argStream.NextIsBool())
+        renderStage = argStream.ReadBool() ? eRenderStage::POST_GUI : eRenderStage::POST_FX;
     else
         argStream.ReadIfNextIsEnumString(renderStage, eRenderStage::POST_FX);
+
     if (argStream.NextIsVector3D())
     {
         argStream.ReadVector3D(vecFaceToward);
@@ -599,8 +600,8 @@ int CLuaDrawingDefs::DxDrawPrimitive3D(lua_State* luaVM)
     eRenderStage renderStage{eRenderStage::POST_FX};
     CScriptArgReader argStream(luaVM);
     argStream.ReadEnumString(ePrimitiveType);
-    if (bool bPostGUI = argStream.ReadIfNextIsBool())
-        renderStage = bPostGUI ? eRenderStage::POST_GUI : eRenderStage::POST_FX;
+    if (argStream.NextIsBool())
+        renderStage = argStream.ReadBool() ? eRenderStage::POST_GUI : eRenderStage::POST_FX;
     else
         argStream.ReadEnumString(renderStage, eRenderStage::POST_FX);
 
@@ -654,8 +655,8 @@ int CLuaDrawingDefs::DxDrawMaterialPrimitive3D(lua_State* luaVM)
     CScriptArgReader argStream(luaVM);
     argStream.ReadEnumString(ePrimitiveType);
     MixedReadMaterialString(argStream, pMaterialElement);
-    if (bool bPostGUI = argStream.ReadIfNextIsBool())
-        renderStage = bPostGUI ? eRenderStage::POST_GUI : eRenderStage::POST_FX;
+    if (argStream.NextIsBool())
+        renderStage = argStream.ReadBool() ? eRenderStage::POST_GUI : eRenderStage::POST_FX;
     else
         argStream.ReadEnumString(renderStage, eRenderStage::POST_FX);
 

Shared/sdk/CScriptArgReader.h

@@ -525,6 +525,22 @@ class CScriptArgReader
         m_iIndex++;
     }
 
+    //
+    // Read next bool or false if failed
+    // Intended for use in pair with NextIsBool()
+    //
+    bool ReadBool()
+    {
+        int iArgument = lua_type(m_luaVM, m_iIndex);
+        if (iArgument == LUA_TBOOLEAN)
+        {
+            return lua_toboolean(m_luaVM, m_iIndex++) ? true : false;
+        }
+        
+        m_iIndex++;
+        return false;
+    }
+
     //
     // Read next bool, using default if needed
     //
@@ -1331,14 +1347,6 @@ class CScriptArgReader
             bOutValue = bDefaultValue;
     }
 
-    bool ReadIfNextIsBool(const bool bDefaultValue = false)
-    {
-        bool bOutValue{bDefaultValue};
-        if (NextIsBool())
-            ReadBool(bOutValue, bDefaultValue);
-        return bOutValue;
-    }
-
     template <class T>
     void ReadIfNextIsUserData(T*& outValue, T* defaultValue)
     {