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raylib

Description

Bindings to the raylib game library version 5.5. These are not complete yet, but all of the functions I commonly use are ported over. It's a very thin wrapper around the raylib C library that hopefully has minimal performance drawbacks.

Types such as Color, Vector2, Vector3, and Rectangle are represented as SRFI-4 vectors to keep the memory managed by CHICKEN.

See raylib.h for more info on each function.

Requirements

Documentation

Color Interface

[procedure] (make-color R G B A)

Represented as u8vector.

Vector Interface

[procedure] (make-vec2 X Y)
[procedure] (vec2-x V)
[procedure] (vec2-y V)
[procedure] (make-vec3 X Y Z)
[procedure] (vec3-x V)
[procedure] (vec3-y V)
[procedure] (vec3-z V)

Represented as f32vector.

Rectangle Interface

[procedure] (make-rect X Y W H)
[procedure] (rect-x RECT)
[procedure] (rect-y RECT)
[procedure] (rect-w RECT)
[procedure] (rect-h RECT)

Represented as f32vector.

Texture Interface

[procedure] (make-texture)
[procedure] (free-texture TEXTURE)

Allocates C struct in unmanaged memory (C_malloc). Remember to free.

[procedure] (texture-id TEXTURE)
[procedure] (texture-width TEXTURE)
[procedure] (texture-height TEXTURE)
[procedure] (texture-mipmaps TEXTURE)
[procedure] (texture-format TEXTURE)

Camera2D Interface

[procedure] (make-camera2d)
[procedure] (free-camera2d TEXTURE)

Allocates C struct in unmanaged memory (C_malloc). Remember to free.

[procedure] (camera2d-offset CAMERA)
[procedure] (camera2d-target CAMERA)

Return f32vector (Vector2).

[procedure] (camera2d-rotation CAMERA)
[procedure] (camera2d-zoom CAMERA)

Return flonum.

[procedure] (camera2d-offset-set! CAMERA VEC2)
[procedure] (camera2d-target-set! CAMERA VEC2)
[procedure] (camera2d-rotation-set! CAMERA ROTATION)
[procedure] (camera2d-zoom-set! CAMERA ZOOM)

Set the specified slots.

Constants

The following are defined from raylib.h:

General Interface

 [procedure] (init-window WIDTH HEIGHT TITLE)
[procedure] (close-window)
[procedure] (get-screen-width)
[procedure] (get-screen-height)
[procedure] (window-should-close?)
[procedure] (begin-drawing)
[procedure] (end-drawing)
[procedure] (begin-mode-2d CAMERA)
[procedure] (end-mode-2d)
[procedure] (clear-background COLOR)
[procedure] (set-target-fps FPS)
[procedure] (get-frame-time)
[procedure] (get-time)
[procedure] (get-fps)
[procedure] (key-pressed? KEY)
[procedure] (key-pressed-repeat? KEY)
[procedure] (key-down? KEY)
[procedure] (key-released? KEY)
[procedure] (key-up? KEY)
[procedure] (get-key-pressed)
[procedure] (get-char-pressed)
[procedure] (mouse-button-pressed? MOUSEBUTTON)
[procedure] (mouse-button-down? MOUSEBUTTON)
[procedure] (mouse-button-released? MOUSEBUTTON)
[procedure] (mouse-button-up? MOUSEBUTTON)
[procedure] (get-mouse-x)
[procedure] (get-mouse-y)
[procedure] (get-mouse-position)
Misc. functions
[procedure] (trace-log LOGLEVEL TEXT)
File system functions
[procedure] (change-directory DIR)
Texture loading functions
[procedure] (load-texture FILENAME)
Basic shapes drawing functions
[procedure] (draw-pixel POSX POSY COLOR)
[procedure] (draw-pixel-v POSITION COLOR)
[procedure] (draw-line STARTPOSX STARTPOSY ENDPOSX ENDPOSY COLOR)
[procedure] (draw-line-v STARTPOS ENDPOS COLOR)
[procedure] (draw-line-ex STARTPOS ENDPOS THICK COLOR)
[procedure] (draw-circle CENTERX CENTERY RADIUS COLOR)
[procedure] (draw-circle-v CENTER RADIUS COLOR)
[procedure] (draw-circle-lines CENTERX CENTERY RADIUS COLOR)
[procedure] (draw-circle-lines-v CENTER RADIUS COLOR)
[procedure] (draw-rectangle POSX POSY WIDTH HEIGHT COLOR)
[procedure] (draw-rectangle-v POSITION SIZE COLOR)
[procedure] (draw-rectangle-rec RECT COLOR)
[procedure] (draw-rectangle-pro RECT ORIGIN ROTATION COLOR)
[procedure] (draw-rectangle-lines POSX POSY WIDTH HEIGHT COLOR)
[procedure] (draw-rectangle-lines-ex RECT LINETHICK COLOR)
[procedure] (draw-triangle V1 V2 V3 COLOR)
[procedure] (draw-triangle-lines V1 V2 V3 COLOR)
Texture drawing functions
[procedure] (draw-texture TEXTURE POSX POSY TINT)
[procedure] (draw-texture-v TEXTURE POSITION TINT)
[procedure] (draw-texture-ex TEXTURE POSITION ROTATION SCALE TINT)
[procedure] (draw-texture-rec TEXTURE SOURCERECT POSITION TINT)
[procedure] (draw-texture-pro TEXTURE SOURCERECT DESTRECT ORIGIN ROTATION TINT)
Text drawing functions
[procedure] (draw-text TEXT POSX POSY FONTSIZE)
[procedure] (measure-text TEXT FONTSIZE)

Example

 
(import raylib)

(init-window 800 450 "raylib [core] example - basic window")

(let loop ()
  (begin-drawing)
  (clear-background RAYWHITE)
  (draw-text "Congrats! You created your first window!"
             190
             200
             20
             LIGHTGRAY)
  (end-drawing)
  (if (window-should-close?) #f (loop)))

(close-window)

Source repository

https://github.com/meowstr/chicken-raylib

Feel free to open issues and PR's!

Authors

Meowster

License

MIT