Add utility for loading a light.

diff --git a/tabakrolletjie/lights.py b/tabakrolletjie/lights.py
index e69de29bb2d1d6434b8b29ae775ad8c2e48c5391..8ec89a0cb37ac07bbb4f7ddab57e227b91ce5afd 100644 (file)
--- a/tabakrolletjie/lights.py
+++ b/tabakrolletjie/lights.py
@@ -0,0 +1,33 @@
+""" May it be a light for you in dark places, when all other lights go out.
+"""
+
+
+class BaseLight(object):
+    """ Common light functionality. """
+
+    def __init__(self, colour, position):
+        self.colour = colour
+        self.position = position
+
+    @classmethod
+    def load(cls, config):
+        kw = config.copy()
+        light_type = kw.pop("type")
+        [light_class] = [
+            c for c in cls.__subclasses__()
+            if c.__name__.lower() == light_type]
+        return light_class(**kw)
+
+
+class SpotLight(BaseLight):
+    def __init__(
+            self, colour="white", position=None, direction=90.0, spread=45.0):
+        super(SpotLight, self).__init__(colour, position)
+        self.direction = direction
+        self.spread = spread
+
+
+class Lamp(BaseLight):
+    def __init__(self, colour="white", position=None, radius=100.0):
+        super(Lamp, self).__init__(colour, position)
+        self.radius = radius