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diff --git a/posts/guile-2d-live-asset-reload.md b/posts/guile-2d-live-asset-reload.md deleted file mode 100644 index f1e67b5..0000000 --- a/posts/guile-2d-live-asset-reload.md +++ /dev/null @@ -1,49 +0,0 @@ -title: Live Asset Reloading with guile-2d -date: 2014-05-04 22:00:00 -tags: foss, gnu, guile, scheme, gamedev, wsu -summary: Automatically reload modified assets while developing guile-2d progams ---- - -Guile-2d provides a dynamic environment in which a developer can build -a game incrementally as it runs via the Guile REPL. It’s nice to be -able to hot-swap code and have the running game reflect the changes -made, but what about the game data files? If an image file or other -game asset is modified, it would be nice if the game engine took -notice and reloaded it automatically. This is what guile-2d’s live -asset reloading feature does. - -The new `(2d live-reload)` module provides the `live-reload` -procedure. `live-reload` takes a procedure like `load-texture` and -returns a new procedure that adds the live reload magic. The new -procedure returns assets wrapped in a signal, a time-varying value. A -coroutine is started that periodically checks if the asset file has -been modified, and if so, reloads the asset and propagates it via the -signal. Game objects that depend on the asset will be regenerated -immediately. - -Here’s some example code: - -```scheme -(define load-texture/live - (live-reload load-texture)) - -(define-signal texture - (load-texture/live "images/p1_front.png")) - -(define-signal sprite - (signal-map - (lambda (texture) - (make-sprite texture - #:position (vector2 320 240))) - texture)) -``` - -`load-texture/live` loads textures and reloads them when they change -on disk. Every time the texture is reloaded, the sprite is -regenerated using the new texture. - -Here’s a screencast to see live reloading in action: - - - -Guile-2d is ever-so-slowly approaching a 0.2 release. Stay tuned! |