Call drawGrid() and drawCells() prior to the first invocation of tick().

jwir3 commented 5 years ago

Summary

This PR adds a drawGrid() and drawCells() call just before the first call to requestAnimationFrame() in order to ensure that the initial state of the universe is drawn prior to executing a Universe.tick() call.

Explain the motivation for making this change. What existing problem does the pull request solve? 🤔

If this is not done, the initial state of the universe is never drawn, which can be confusing for those looking to implement the exercises where a specific starting set of cells is desired.

[x] 👯 This PR is not a duplicate
[x] 📬 This PR addresses an open issue (#118)
[x] ✅ This PR has passed CI

jwir3 commented 5 years ago

Yep, will do.

jwir3 commented 5 years ago

Added a PR here: https://github.com/rustwasm/wasm_game_of_life/pull/37

jwir3 commented 5 years ago

Also, I've updated the later code in interactivity.md to account for the source change mentioned above.

rustwasm / book

Call drawGrid() and drawCells() prior to the first invocation of tick(). #122