--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/gamelib/schematics.py	Mon May 07 21:24:23 2012 +0200
@@ -0,0 +1,68 @@
+from gamelib import research
+from gamelib.game_base import Science
+
+
+# Kinds of schematic.
+HAND_WEAPON = 'hand weapon'
+VEHICLE = 'vehicle'
+DOOMSDAY_DEVICE = 'doomsday device'
+PATHOGEN = 'pathogen'
+
+
+class Schematic(Science):
+    ACQUISITION_CHANCE = 0.8
+    COST = None
+    UPGRADE_REQUIREMENT = 1
+    STARTING_PRODUCT = False
+    SCIENCE_TYPE = 'schematic'
+    CATEGORIES = ()
+
+    def can_spend(self, lab):
+        extra = self.UPGRADE_REQUIREMENT * self.points + 1
+        return lab.meet_requirements(self, extra)
+
+    def is_a(self, category):
+        return category in self.CATEGORIES
+
+
+class MachineGun(Schematic):
+    NAME = "Machine gun"
+    COST = 100
+    CATEGORIES = (HAND_WEAPON,)
+    STARTING_PRODUCT = True
+
+    def __init__(self, points=0):
+        self.points = 1
+
+    def spend_point(self):
+        raise NotImplementedError()
+
+    def can_spend(self, lab):
+        return False
+
+
+class LightningGun(Schematic):
+    NAME = "Lightning gun"
+    COST = 300
+    CATEGORIES = (HAND_WEAPON,)
+    PREREQUISITES = (
+        (research.Tesla, 1),
+        )
+
+
+class TeslaTank(Schematic):
+    NAME = "Tesla tank"
+    COST = 1000
+    CATEGORIES = (VEHICLE,)
+    PREREQUISITES = (
+        (research.Tesla, 3),
+        )
+
+
+class DoomsdayVirus(Schematic):
+    NAME = "Doomsday virus"
+    COST = 100000
+    CATEGORIES = (DOOMSDAY_DEVICE, PATHOGEN)
+    PREREQUISITES = (
+        (research.Biogenetics, 5),
+        )