1 files changed, 23 insertions, 3 deletions
diff --git a/NeoRuntime/builtin/fade/script.py b/NeoRuntime/builtin/fade/script.py
index c88650d..8fe902a 100644
--- a/NeoRuntime/builtin/fade/script.py
+++ b/NeoRuntime/builtin/fade/script.py
@@ -1,8 +1,28 @@
-from luxcena_neo import NeoBehaviour
-import time
+from luxcena_neo import NeoBehaviour, IntegerVariable
+
+def wheel(pos):
+    """Generate rainbow colors across 0-255 positions."""
+    if pos < 85:
+        return (pos * 3, 255 - pos * 3, 0)
+    elif pos < 170:
+        pos -= 85
+        return (255 - pos * 3, 0, pos * 3)
+    else:
+        pos -= 170
+        return (0, pos * 3, 255 - pos * 3)
 
 class Main(NeoBehaviour):
 
+    def declare_variables(self):
+        self.declare(IntegerVariable("speed", 2, min_val=1, max_val=50))
+
     def on_start(self):
-        pass
+        """ Execute when mode is selected. """
+        self.i = 0
 
+    def each_tick(self):
+        self.i += self.var.speed
+        if self.i > 255: self.i = 0
+        for i in range(strip.num_pixels()):
+            strip.set_pixel_color(i, wheel(self.i))
+        strip.show()