Conway's Game of Life

Conway's Game of Life for Unity DOTS Community Challenge #1

This implementation works by creating an entity for each cell. cells have current alive/dead value and index that represents position in array to read/write data from/to. On cell creation I precalculate all 8 neighbors indexes and store those in dynamicBuffer. Cells are displayed using raw image and texture2d. Here is : https://blog.unity.com/engine-platform/accessing-texture-data-efficiently nice article about efficient ways of accessing texture data.

Main update loop:

• IJobEntity to write current state of cell to nativeArray
• IJobEntity to read data of neighbors from nativeArray and determine cell state
• IJobEntity to write data to texture2D

Currently the second step takes the majority of the frame budget.

I also added the option to manually toggle cells on and off.

Results on my machine (i5-9400F, 16GB ram, 4070)

2048 cells ~50fps

4096 cells ~12fps