3 files changed, 51 insertions, 3 deletions
diff --git a/NeoRuntime/Runtime/luxcena_neo/strip.py b/NeoRuntime/Runtime/luxcena_neo/strip.py
index b1b90ba..b0165c9 100644
--- a/NeoRuntime/Runtime/luxcena_neo/strip.py
+++ b/NeoRuntime/Runtime/luxcena_neo/strip.py
@@ -121,7 +121,9 @@ class Strip:
 
     def _set_brightness(self, value):
         self.__actual_brightness = value
-        self.strip.setBrightness(value)
+        # Logarithmic curve, to try to make the brightness controll feel more natural.
+        v = int(10**((value-1)/41.11))
+        self.strip.setBrightness(v)
         self.show()
 
     def show(self):
@@ -147,7 +149,11 @@ class Strip:
     def set_pixel_color_XY(self, x, y, *color):
         """Set LED at position n to the provided 24-bit color value (in RGB order).
         """
-        self.set_pixel_color(self.pixelMatrix.get(x, y), *color)
+        try:
+            pixel = self.pixelMatrix.get(x, y)
+            self.set_pixel_color(self.pixelMatrix.get(x, y), *color)
+        except IndexError as e:
+            print(f"Pixel outside matrix cannot be set ({x}, {y})")
 
     def set_segment_color(self, segment, *color):
         """Set a whole segment to the provided red, green and blue color.
diff --git a/NeoRuntime/Runtime/neo_runtime.py b/NeoRuntime/Runtime/neo_runtime.py
index 7733a4b..c577444 100644
--- a/NeoRuntime/Runtime/neo_runtime.py
+++ b/NeoRuntime/Runtime/neo_runtime.py
@@ -204,7 +204,11 @@ class NeoRuntime:
 
 
     def __module_loop(self):
-        self.__module_entry_instance.on_start()
+        try:
+            self.__module_entry_instance.on_start()
+        except Exception as e:
+            traceback.print_exc()
+            sys.exit(1)
 
         self.__module_last_tick   = time.perf_counter()
         self.__module_last_second = time.perf_counter()
diff --git a/NeoRuntime/builtin/rainbow/script.py b/NeoRuntime/builtin/rainbow/script.py
new file mode 100644
index 0000000..292ef97
--- /dev/null
+++ b/NeoRuntime/builtin/rainbow/script.py
@@ -0,0 +1,38 @@
+from luxcena_neo import NeoBehaviour, utils, FloatVariable, BooleanVariable
+from time import perf_counter
+
+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(FloatVariable("speed", 0.95, min_val=0, max_val=1, step=0.01))
+        self.declare(BooleanVariable("Uniform", True))
+
+    def on_start(self):
+        """ Execute when mode is selected. """
+        self.j = 0
+        self.i = 0
+        self.last_inst = perf_counter()
+
+    def each_tick(self):
+        """Draw rainbow that fades across all pixels at once."""
+        if (perf_counter() - self.last_inst) > (1.01-self.var.Speed):
+            self.last_inst = perf_counter()
+            self.j += 1
+            if self.j >= 256: self.j = 0
+            for i in range(strip.num_pixels()):
+                if self.var["Uniform"]:
+                    strip.set_pixel_color(i, wheel(int((i * 256 // strip.num_pixels()) + self.j) & 255))
+                else:
+                    strip.set_pixel_color(i, wheel((i+self.j) & 255))
+            strip.show()