Noah Petherbridge
ba6892aa95
* Refactor texture caching in render.Engine:
* New interface method: NewTexture(filename string, image.Image)
* WASM immediately encodes the image to PNG and generates a JavaScript
`Image()` object to load it with a data URI and keep it in memory.
* SDL2 saves the bitmap to disk as it did before.
* WASM: deprecate the sessionStorage for holding image data. Session
storage methods panic if called. The image data is directly kept in
Go memory as a js.Value holding an Image().
* Shared Memory workaround: the level.Chunk.ToBitmap() function is where
chunk textures get cached, but it had no access to the render.Engine
used in the game. The `pkg/shmem` package holds global pointers to
common structures like the CurrentRenderEngine as a work-around.
* Also shmem.Flash() so Doodle can make its d.Flash() function
globally available, any sub-package can now flash text to the screen
regardless of source code location.
* JavaScript API for Doodads now has a global Flash() function
available.
* WASM: Handle window resize so Doodle can recompute its dimensions
instead of scaling/shrinking the view.
27 lines
678 B
Go
27 lines
678 B
Go
package shmem
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import (
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"fmt"
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"git.kirsle.net/apps/doodle/lib/render"
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)
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// Shared globals for easy access throughout the app.
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// Not an ideal place to keep things but *shrug*
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var (
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// Current render engine (i.e. SDL2 or HTML5 Canvas)
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// The level.Chunk.ToBitmap() uses this to cache a texture image.
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CurrentRenderEngine render.Engine
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// Globally available Flash() function so we can emit text to the Doodle UI.
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Flash func(string, ...interface{})
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)
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func init() {
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// Default Flash function in case the app misconfigures it. Output to the
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// console in an obvious way.
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Flash = func(tmpl string, v ...interface{}) {
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fmt.Printf("[shmem.Flash] "+tmpl+"\n", v...)
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}
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}
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