diff options
| -rw-r--r-- | README.org | 20 |
1 files changed, 9 insertions, 11 deletions
@@ -23,12 +23,11 @@ #+BEGIN_SRC scheme (use-modules (2d game) (2d sprite) - (2d vector2) (2d window)) (define sprite (load-sprite "images/p1_front.png" - #:position (vector2 320 240))) + #:position #(320 240))) (add-hook! draw-hook (lambda (dt alpha) @@ -57,7 +56,7 @@ #+BEGIN_SRC scheme (with-window (make-window #:title "Best Game Ever" - #:resolution (vector2 640 480)) + #:resolution #(640 480)) (start-game-loop)) #+END_SRC @@ -78,8 +77,8 @@ (define sprite (load-sprite "cirno.png" - #:position (vector2 320 240) - #:scale (1 1) + #:position #(320 240) + #:scale #(1 1) #:rotation 45 #:color white #:anchor 'center)) @@ -95,7 +94,7 @@ Position, scale, rotation, color, and anchor are mutable. #+BEGIN_SRC scheme - (set-sprite-position! sprite (vector2 100 100)) + (set-sprite-position! sprite #(100 100)) #+END_SRC Drawing a sprite is simple. @@ -215,18 +214,17 @@ Example: #+BEGIN_SRC scheme (define-signal position - (signal-fold v+ (vector2 320 240) - (signal-map (lambda (v) - (vscale v 4)) + (signal-fold v+ #(320 240) + (signal-map (lambda (v) (v* v 4)) (signal-sample 1 key-arrows)))) #+END_SRC This signal describes a relationship between the arrow keys on the keyboard and the position of the player. =signal-sample= is used to trigger a signal update upon every game tick that provides the - current state of the arrow keys. =key-arrows= is a vector2 that + current state of the arrow keys. =key-arrows= is a vector that maps to the current state of the arrow keys, allowing for 8 - direction movement. This vector2 is then scaled 4x to make the + direction movement. This vector is then scaled 4x to make the player move faster. Finally, the scaled vector is added to the previous player position via =signal-fold=. The player's position is at (320, 240) initially. As you can see, there are no |