32 lines
1.1 KiB
Odin
32 lines
1.1 KiB
Odin
package ui
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import ecs "../src"
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import ml "vendor:microui"
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// the microui context UIPlugin refreshes every frame, nil until the first
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// PRE_DRAW. use get_ctx() instead of touching it directly
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ui_ctx: ^ml.Context
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// wires the ui package into the app, in frame order:
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//
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// STARTUP init() bakes the microui atlas into a texture
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// PRE_DRAW begin() forwards raylib input, starts the frame, stashes ui_ctx
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// POST_DRAW the frame's temp arena is freed, then end() renders the ui
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// DESTROY destroy() unloads the atlas texture
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//
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// (systems within a schedule run in registration order, so POST_DRAW frees
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// the arena first and renders second)
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UIPlugin :: proc(app: ^ecs.App) {
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ecs.add_system(app, ecs.STARTUP, proc() {init()})
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ecs.add_system(app, ecs.POST_DRAW, proc() {free_all(context.temp_allocator)})
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ecs.add_system(app, ecs.PRE_DRAW, proc() {ui_ctx = begin()})
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ecs.add_system(app, ecs.POST_DRAW, proc() {end()})
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ecs.add_system(app, ecs.DESTROY, proc() {destroy()})
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}
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// the microui context for this frame. pass it to every microui call. valid
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// from PRE_DRAW onwards (nil before the first frame)
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get_ctx :: proc() -> ^ml.Context {
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return ui_ctx
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}
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