The error 'godot error calling method from signal' typically occurs when there's a mismatch between the method connected to a signal and its definition in Godot Engine. Here are some common causes:
Incorrect Method Signature: The method's parameters do not match what the signal sends. For instance, if a signal passes two arguments but the connected method only accepts one or none, you will encounter this error.
Non-Existent Method: The method specified in the
connect() function does not exist in the given script, possibly due to a typo or the method being improperly renamed or removed.
Invalid Object Instance: The object to which the signal is trying to connect a method does not exist or is not ready at the time of connection.
Script Errors: The script containing the method might have other errors that prevent correct parsing or compilation, indirectly leading to this signal connection issue.
Wrong Signal Connection Code: A mistake in the
connect() function call, such as incorrect arguments or wrong order of arguments, can cause this error.
Inheritance Issues: If you are overriding methods or using inheritance, the base class might be emitting signals that the derived class methods are not set up to handle.
To fix this error, go through the following steps:
Check Method Signature: Ensure that the method connected to the signal has the correct number and types of parameters expected by the signal. Adjust the method definition if needed.
Verify Method Existence: Double-check that the method you're connecting actually exists and is spelled correctly in the script file.
Ensure Proper Object Initialization: Make sure that the object to which you're connecting the signal is properly instantiated and accessible at the point where you make the connection.
Debug Other Script Errors: Look for other syntax or runtime errors in your script that could be affecting the method's availability or the signal's operation.
Review Signal Connection Code: Examine the
connect() function call for any mistakes in argument order or content, and ensure it follows the correct syntax:
signal.connect("signal_name", self, "_method_name").
Handle Inheritance Properly: If using inheritance, confirm that the derived class methods are compatible with the signals emitted by the base class, or adjust the connections appropriately.
Use Editor Tools: Utilize Godot's built-in script editor features like auto-complete to avoid typos and other common mistakes.
By walking through these checks and corrections, you should be able to resolve the 'godot error calling method from signal' and ensure your signals and methods interact correctly.