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authorDavid Thompson <dthompson2@worcester.edu>2014-06-08 08:52:42 -0400
committerDavid Thompson <dthompson2@worcester.edu>2014-06-08 08:52:42 -0400
commit82cc6e27adc4ac06e1e429eeeaac0a73f597e66d (patch)
tree041b537e9dd3ffe55a85fb4b207b31f5a6cc6dc1
parentc2a4f0636569978a40cb5c98875d798624909eb2 (diff)
Fix README.
* README.org: Replace references to vector2 with vectors.
-rw-r--r--README.org20
1 files changed, 9 insertions, 11 deletions
diff --git a/README.org b/README.org
index 4502cbc..fdc45e4 100644
--- a/README.org
+++ b/README.org
@@ -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