Phobos-developers / Phobos

Ares-compatible C&C Red Alert 2: Yuri's Revenge engine extension
GNU Lesser General Public License v3.0
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bugfix(TAction): SaveGame will no longer break the trigger contains this action after loading the game #1359

Closed secsome closed 3 months ago

secsome commented 3 months ago

The old implementation for this TAction has a bug which will break the trigger use it after you load the save.

Here is an example to reproduce:

  1. Create a repeatable trigger with event Time Elapsed... 5 seconds
  2. Set the trigger action with Disable Trigger itself and SaveGame
  3. Use a trigger to enable the SaveGame trigger, twice or more

You will find out this SaveGame trigger will only be executed at the first time, that's because we implemented this SaveGame trigger while executing the trigger, which will save the status of trigger immediately. The proper implementation is make this save request pending, and do it at the beginning of next game frame so no unfinished game objects will be affected.

Summary by CodeRabbit

coderabbitai[bot] commented 3 months ago

Walkthrough

The changes enhance the game state management in TActionExt by introducing a static member variable to track pending save actions. The SaveGame method is streamlined to reset this variable and prepare a description for saving, while a new hook function manages the saving process and user notifications. These modifications improve the efficiency and clarity of game saving functionalities.

Changes

Files Change Summary
src/Ext/TAction/Body.cpp, src/Ext/TAction/Body.h Added a static member PendingSaveGameByTrigger in TActionExt, managing save game states more effectively.
src/Ext/TAction/Hooks.cpp Introduced Main_Loop_ProcessTActionPendingSaveGame, handling save state actions and user notifications.

Sequence Diagram(s)

sequenceDiagram
    participant User
    participant TActionExt
    participant ScenarioClass

    User->>TActionExt: Trigger Save Game
    TActionExt->>TActionExt: Reset PendingSaveGameByTrigger
    TActionExt->>TActionExt: Build save description
    TActionExt->>ScenarioClass: SaveGame(description)
    ScenarioClass-->>TActionExt: Save successful
    TActionExt->>User: Notify success

🐇 In fields of code, I hop and play,
New save actions brighten the day,
With every save, a tale to weave,
In game worlds, we dare to believe!
🌟✨


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