Generates the rpc and rset info for exported GDScript.

Improved the send rpc log message when fail.

This work has been kindly sponsored by IMVU.

core/io/multiplayer_api.cpp

@@ -863,7 +863,8 @@ void MultiplayerAPI::_send_rpc(Node *p_from, int p_to, bool p_unreliable, bool p
 		if (method_id == UINT16_MAX && p_from->get_script_instance()) {
 			method_id = p_from->get_script_instance()->get_rpc_method_id(p_name);
 		}
-		ERR_FAIL_COND_MSG(method_id == UINT16_MAX, "Unable to take the `method_id` for the function:" + p_name + ". this can happen only if this method is not marked as `remote`.");
+		ERR_FAIL_COND_MSG(method_id == UINT16_MAX,
+				vformat("Unable to take the `method_id` for the function \"%s\" at path: \"%s\". This happens when the method is not marked as `remote`.", p_name, p_from->get_path()));
 
 		if (method_id <= UINT8_MAX) {
 			// The ID fits in 1 byte

modules/gdscript/gdscript.cpp

@@ -613,52 +613,7 @@ Error GDScript::reload(bool p_keep_state) {
 		_set_subclass_path(E->get(), path);
 	}
 
-	// Copy the base rpc methods so we don't mask their IDs.
+	_init_rpc_methods_properties();
-	rpc_functions.clear();
-	rpc_variables.clear();
-	if (base.is_valid()) {
-		rpc_functions = base->rpc_functions;
-		rpc_variables = base->rpc_variables;
-	}
-
-	GDScript *cscript = this;
-	Map<StringName, Ref<GDScript> >::Element *sub_E = subclasses.front();
-	while (cscript) {
-		// RPC Methods
-		for (Map<StringName, GDScriptFunction *>::Element *E = cscript->member_functions.front(); E; E = E->next()) {
-			if (E->get()->get_rpc_mode() != MultiplayerAPI::RPC_MODE_DISABLED) {
-				ScriptNetData nd;
-				nd.name = E->key();
-				nd.mode = E->get()->get_rpc_mode();
-				if (-1 == rpc_functions.find(nd)) {
-					rpc_functions.push_back(nd);
-				}
-			}
-		}
-		// RSet
-		for (Map<StringName, MemberInfo>::Element *E = cscript->member_indices.front(); E; E = E->next()) {
-			if (E->get().rpc_mode != MultiplayerAPI::RPC_MODE_DISABLED) {
-				ScriptNetData nd;
-				nd.name = E->key();
-				nd.mode = E->get().rpc_mode;
-				if (-1 == rpc_variables.find(nd)) {
-					rpc_variables.push_back(nd);
-				}
-			}
-		}
-
-		if (cscript != this)
-			sub_E = sub_E->next();
-
-		if (sub_E)
-			cscript = sub_E->get().ptr();
-		else
-			cscript = NULL;
-	}
-
-	// Sort so we are 100% that they are always the same.
-	rpc_functions.sort_custom<SortNetData>();
-	rpc_variables.sort_custom<SortNetData>();
 
 	return OK;
 }
@@ -897,6 +852,8 @@ Error GDScript::load_byte_code(const String &p_path) {
 		_set_subclass_path(E->get(), path);
 	}
 
+	_init_rpc_methods_properties();
+
 	return OK;
 }
 
@@ -1049,6 +1006,55 @@ void GDScript::_save_orphaned_subclasses() {
 	}
 }
 
+void GDScript::_init_rpc_methods_properties() {
+	// Copy the base rpc methods so we don't mask their IDs.
+	rpc_functions.clear();
+	rpc_variables.clear();
+	if (base.is_valid()) {
+		rpc_functions = base->rpc_functions;
+		rpc_variables = base->rpc_variables;
+	}
+
+	GDScript *cscript = this;
+	Map<StringName, Ref<GDScript> >::Element *sub_E = subclasses.front();
+	while (cscript) {
+		// RPC Methods
+		for (Map<StringName, GDScriptFunction *>::Element *E = cscript->member_functions.front(); E; E = E->next()) {
+			if (E->get()->get_rpc_mode() != MultiplayerAPI::RPC_MODE_DISABLED) {
+				ScriptNetData nd;
+				nd.name = E->key();
+				nd.mode = E->get()->get_rpc_mode();
+				if (-1 == rpc_functions.find(nd)) {
+					rpc_functions.push_back(nd);
+				}
+			}
+		}
+		// RSet
+		for (Map<StringName, MemberInfo>::Element *E = cscript->member_indices.front(); E; E = E->next()) {
+			if (E->get().rpc_mode != MultiplayerAPI::RPC_MODE_DISABLED) {
+				ScriptNetData nd;
+				nd.name = E->key();
+				nd.mode = E->get().rpc_mode;
+				if (-1 == rpc_variables.find(nd)) {
+					rpc_variables.push_back(nd);
+				}
+			}
+		}
+
+		if (cscript != this)
+			sub_E = sub_E->next();
+
+		if (sub_E)
+			cscript = sub_E->get().ptr();
+		else
+			cscript = NULL;
+	}
+
+	// Sort so we are 100% that they are always the same.
+	rpc_functions.sort_custom<SortNetData>();
+	rpc_variables.sort_custom<SortNetData>();
+}
+
 GDScript::~GDScript() {
 	for (Map<StringName, GDScriptFunction *>::Element *E = member_functions.front(); E; E = E->next()) {
 		memdelete(E->get());

modules/gdscript/gdscript.h

@@ -134,6 +134,7 @@ class GDScript : public Script {
 	bool _update_exports();
 
 	void _save_orphaned_subclasses();
+	void _init_rpc_methods_properties();
 
 protected:
 	bool _get(const StringName &p_name, Variant &r_ret) const;