mirror of
https://github.com/carp-lang/Carp.git
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44 lines
1.6 KiB
Plaintext
44 lines
1.6 KiB
Plaintext
(load "SDL.carp")
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(load "SDL_ttf.carp")
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;;(Debug.sanitize-addresses)
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(def font (the (Ptr TTF_Font) NULL))
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(def text1 (the (Ptr SDL_Texture) NULL))
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(defn shifting-bg-color []
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(SDL.rgb (/ (SDL.get-ticks) 10) 240 220))
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(defn draw [app rend state-ref]
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(do (SDL.bg rend &(shifting-bg-color))
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(let [dims (SDL.dimensions text1)]
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(SDL.draw-texture-centered rend text1 &(SDL.point 200 150)))))
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(defn change-text [rend]
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(do (when (not (Pointer.eq NULL text1))
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(SDL.destroy-texture text1))
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(set! text1 (TTF.render-text-to-texture rend font &(str* "TICK: " (SDL.get-ticks))))))
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(defn event-handler [app]
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(let [event (SDL.Event.init)]
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(while (SDL.Event.poll (address event))
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(let [et (SDL.Event.type &event)]
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(cond (= et SDL.Event.quit) (SDLApp.stop app)
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(= et SDL.Event.key-down) (let [key (SDL.Event.keycode &event)]
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(cond
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(= key SDL.Keycode.escape) (SDLApp.stop app)
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(= key SDL.Keycode.return) (change-text @(SDLApp.renderer app))
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()))
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())))))
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(defn main []
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(let [app (SDLApp.create "Font Rendering with SDL_ttf" 400 300)
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rend @(SDLApp.renderer &app)]
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(do
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(if (TTF.ok? (TTF.init))
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(do (set! font (TTF.open-font (cstr "resources/Hasklig.otf") 20))
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(set! text1 (TTF.render-text-to-texture rend font "Carp!"))
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(SDLApp.run-with-callbacks &app event-handler id draw 0))
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(println* "Failed to initialize SDL_ttf: " &(str (TTF.get-error))))
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0)))
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