Various CScriptSpecialFunction implementation, more debugOverlay CVars

Runtime/World/CEnvFxManager.hpp

@@ -10,6 +10,7 @@ namespace urde
 {
 class CStateManager;
 class CTexture;
+class CActor;
 
 enum class EEnvFxType
 {
@@ -85,6 +86,7 @@ public:
     bool GetX24() const { return x24_; }
     float GetRainMagnitude() const { return x30_rainMagnitude; }
     void Cleanup();
+    void sub801e4f10(CActor*, float, const CStateManager&, u32, u32);
 };
 
 }