Investigation of Error in Random Map Challenge (RMC) Script for ManiaPlanet

[tomekdot]

Overview

The script encountered an "Index out of bounds" error when executing the RMC::RenderGoalMedal() function in the "Random Map Challenge" (RMC) plugin within ManiaPlanet. This issue causes the script to crash and affects the functionality of the Random Map Challenge mode.

Error Details

• Error Message: "Index out of bounds"
• Location:
  • File: RMC.as
  • Line: 136
  • Function: RMC::RenderGoalMedal()

The error occurred while attempting to access an array or list element that does not exist, leading to an "Index out of bounds" exception.

Error Context

• The error occurred after the script fetched random map data from Mania Exchange, specifically when loading and rendering various tags and map configurations for the RMC.
• The function RMC::RenderGoalMedal() likely attempts to render a goal or objective, but an unexpected issue in the data or a missing element causes it to access an invalid index.

Possible Causes

1. Incomplete Data: The fetched map or tag data may be incomplete, leading to missing elements that the script assumes are present. This could cause the array indexing to fail.
2. Misalignment of Data: The structure or format of the fetched data might differ from what the script expects, leading to discrepancies in array sizes.
3. Logic Flaw in Script: There could be a logical flaw in how the script processes or iterates through the fetched data. For example, the script might not check the array's length before accessing an element.

Recommended Solutions

1. Data Validation: Before accessing array elements, the script should validate the size of the array to ensure that the requested index exists. Adding a simple boundary check can prevent "Index out of bounds" errors.
2. Error Handling: Implement robust error handling around data fetching and rendering operations to gracefully handle unexpected data formats or missing elements.
3. Debugging and Testing: Run the script with detailed logging enabled to capture the state of the data at various points, particularly before the RenderGoalMedal() function is called. This will help identify any discrepancies in the fetched data.
4. Fallback Mechanism: If certain data is missing or incomplete, the script could default to a fallback option rather than attempting to render invalid data.

Conclusion

The issue appears to be caused by the script attempting to access an invalid index in the fetched data. Implementing better error handling, data validation, and logging should help resolve this issue and prevent similar crashes in the future.

LOG: log.txt