How to create a Replay System like in Super Meat Boy using Unity

Uploaded by Trever Mock
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In this video, I show how to create a replay system similar to the one in Super Meat Boy using Unity. We'll start with replaying a single playthrough and then expand the system to handle replaying each attempt at the level.

The example in the video is done using a platformer-styled game; however, the concepts and logic in this tutorial will apply to most other types of games as well.

Thank you for watching and I hope the video was helpful! ?

► TIMESTAMPS
0:00 Intro
0:41 Input vs State Based Replay
2:32 How it's going to work
6:42 Project Overview
8:30 Recording the data
11:31 Creating the Replay Object
12:35 Replaying the player
19:56 Switching the Camera Target
20:39 Replaying more state data
25:11 Replaying multiple objects
28:55 Replaying like Super Meat Boy
31:29 Optimizing for memory usage
34:22 Outro

► RESOURCES
This is an excellent resource which goes over some more complicated topics like Memory Streams in a Replay System. I highly recommend giving it a look, especially if you're trying to optimize for memory.
https://www.raywenderlich.com/7728186-creating-a-replay-system-in-unity

If you're struggling with the event-driven stuff used in this tutorial (onGoalReached, onRestartLevel, etc...), this is a short and excellent video that will bring you up to speed with how I'm using events in this project.
https://www.youtube.com/watch?v=gx0Lt4tCDE0

► GITHUB PROJECT
The '1-start-of-video' branch is the starting point of the project for this tutorial and the '2-end-of-video' branch is the end result.
https://github.com/trevermock/supermeatboy-replay-system-example

► MUSIC
The backing music is custom made by @themaykit.
https://www.instagram.com/themaykit/

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Come ask questions, suggest a video topic, or just hang out!
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#supermeatboy #unity2d #unity