flan/examples/core-basic-window.flan

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;;;; raylib [core] example - basic window
;;;;
;;;; examples/core/core_basic_window.c, line for line. Nothing here needed
;;;; anything the language did not already have, which is the point of doing it
;;;; first: if this one does not run, none of the others will either.
;;;;
;;;; The one structural difference from the C is the loop: the C writes
;;;; `while (!WindowShouldClose())` and Flan has `until`, which is the same
;;;; thing without the negation. sand.flan does likewise.
;;;;
;;;; `defer` closes the window. It is function-scoped — it runs when `main`
;;;; returns and not at the end of any inner block — which is exactly what the
;;;; C's trailing CloseWindow() means here.
(import rl "vendor:raylib")
(defconst screen-width 800)
(defconst screen-height 450)
(defn main [] ()
(rl/init-window screen-width screen-height
"raylib [core] example - basic window")
(defer (rl/close-window))
(rl/set-target-fps 60)
(until (rl/window-should-close)
(rl/with-drawing
(rl/clear-background rl/raywhite)
(rl/draw-text "Congrats! You created your first window!" 190 200 20
rl/lightgray))))