added an optional parameter to OS symbol lookup

When looking up a symbol from a library, previously an error was
shown when the symbol did not exist. That caused confusion when the
lookup was completely optional.
This adds a new parameter to that method so that those errors can
be handled manually if needed.

1 files changed, 3 insertions, 3 deletions

diff --git a/core/os/os.h b/core/os/os.h
index 957c1d0ba7..703c6a6bcd 100644
--- a/core/os/os.h
+++ b/core/os/os.h
@@ -184,9 +184,9 @@ public:
 
 	virtual void set_ime_position(const Point2 &p_pos) {}
 
-	virtual Error open_dynamic_library(const String p_path, void *&p_library_handle) { return ERR_UNAVAILABLE; };
-	virtual Error close_dynamic_library(void *p_library_handle) { return ERR_UNAVAILABLE; };
-	virtual Error get_dynamic_library_symbol_handle(void *p_library_handle, const String p_name, void *&p_symbol_handle) { return ERR_UNAVAILABLE; };
+	virtual Error open_dynamic_library(const String p_path, void *&p_library_handle) { return ERR_UNAVAILABLE; }
+	virtual Error close_dynamic_library(void *p_library_handle) { return ERR_UNAVAILABLE; }
+	virtual Error get_dynamic_library_symbol_handle(void *p_library_handle, const String p_name, void *&p_symbol_handle, bool p_optional = false) { return ERR_UNAVAILABLE; }
 
 	virtual void set_keep_screen_on(bool p_enabled);
 	virtual bool is_keep_screen_on() const;