Fork of ImTani/godot-time-rewind-2d

Original description below:

TimeRewind2D Plugin

This plugin adds powerful time manipulation mechanics to your Godot projects, inspired by games like Braid. With this plugin, you can easily integrate features like rewinding time for specific objects and altering the game's time scale in designated areas. The plugin was originally made as a submission for Mechanically Challenged.

Table of Contents

• Features
• Installation
• Usage
• Documentation
  • RewindManager
  • TimeRewind2D
  • TimeArea2D (WIP)
• License
• Contributing

Features

• RewindManager: This autoload script handles the global rewind process for your project. It manages when the rewind starts and stops, and it can pause other nodes that shouldn't be affected by the rewind.

• TimeRewind2D: A node that allows you to rewind specific properties of individual 2D bodies over a defined time. This is the core component of the plugin and is highly customizable.

• TimeArea2D (Work In Progress): This component will allow you to modify the time scale within specific areas of your game world, creating regions where time behaves differently.

Installation

1. Download the Plugin:

   • Download the TimeRewind2D plugin from the Godot Asset Library or directly from the Github Releases.

2. Install the Plugin:

   • Extract the downloaded files into your project's res://addons/ directory.
   • Ensure the folder structure is as follows:

     res://addons/time_rewind_2d/
     

3. Activate the Plugin:

   • Open your Godot project.
   • Go to Project > Project Settings > Plugins.
   • Find TimeRewind2D in the list and set it to Active.

Usage

1. Enable the Plugin: Once the TimeRewind2D plugin is enabled in your project, the RewindManager class becomes accessible as a singleton.

2. Configure Non-Rewindable Nodes (optional): For all nodes that you want to not be processed during the rewind (making it look like time has stopped for these nodes), in the _ready() function of your script, append the nodes into the non_rewindables array of the RewindManager. This ensures that these nodes will stop processing during the rewind.

   func _ready():
       RewindManager.non_rewindables.append($YourNode)

3. Add the TimeRewind2D Node: Place the TimeRewind2D node into your scene. This node is responsible for handling the rewind process for the associated body.

4. Set Up the TimeRewind2D Node:

   • Assign the body export to the Node2D you want to rewind.
   • Assign the collision_shape export to the corresponding CollisionShape2D.
   • Set the rewind_time to the desired duration in seconds.
   • Click on Edit Rewinding Properties button in the inspector to open the property selector.
   • Select all relevant properties through the selector.
   • Click confirm to save the changes.

5. Trigger the Rewind: When you want to initiate the rewind during gameplay, simply call RewindManager.start_rewind(). This will rewind all nodes in the scene that have the TimeRewind2D node attached.

   func _on_some_event():
       RewindManager.start_rewind()

Documentation

RewindManager

The RewindManager is a singleton script that manages the global rewind process. It emits signals when rewinding starts and stops, and it controls which nodes should not be affected by the rewind.

• Signals:

  • rewind_started: Emitted when the rewind process starts.
  • rewind_stopped: Emitted when the rewind process stops.

• Methods:

  • start_rewind(): Begins the rewind process.
  • stop_rewind(): Ends the rewind process.

• Properties:

  • is_rewinding: A boolean indicating whether the rewind is currently active.
  • non_rewindables: An array of nodes that should not be affected by the rewind.

TimeRewind2D

The TimeRewind2D script is attached to nodes you wish to rewind. It records the values of specified properties over time and rewinds them when triggered.

• Properties:

  • body: The main Node2D object whose properties will be manipulated.
  • collision_shape: A CollisionShape2D object associated with the body. It is automatically disabled during the rewind to avoid collisions.
  • rewind_time: The duration (in seconds) for how far back the properties should be rewound.
  • rewindable_properties: An array of strings specifying the properties of the body that can be rewound (e.g., global_position, rotation_degrees).

• Methods:

  • _store_current_values(): Records the current values of the specified properties.
  • _rewind_process(delta): Rewinds the properties to their previous values over time.

• Signals:

  • The script connects to the RewindManager signals to start and stop the rewind process.

TimeArea2D (WIP)

Note: This feature is currently a work in progress.

The TimeArea2D will allow you to create areas where the time scale can be altered, speeding up or slowing down the flow of time within that region.

Examples

• Playable Demo on Itch.io (Web Build)

License

This plugin is licensed under the MIT License. This means you are free to use, modify, and distribute the plugin as long as you include the original license file in any distribution.

Contributing

Contributions are welcome! Feel free to submit issues and pull requests with improvements or bug fixes.