Replace PowerUpRequirements by a proper powered_up script system

Fixes #154

fireplace/card.py

@@ -151,13 +151,10 @@ def deathrattles(self):
 	def powered_up(self):
 		"""
 		Returns True whether the card is "powered up".
-		Currently, this only applies to some cards which require a minion with a
-		specific race on the field.
 		"""
-		for req in self.data.powerup_requirements:
-			for minion in self.controller.field:
-				if minion.race == req:
-					return True
+		script = getattr(self.data.scripts, "powered_up", None)
+		if script:
+			return script.evaluate(self)
 		return False
 
 	@property

fireplace/cards/classic/hunter.py

@@ -23,6 +23,7 @@ class CS2_237:
 
 # Houndmaster
 class DS1_070:
+	powered_up = Find(FRIENDLY_MINIONS + BEAST)
 	play = Buff(TARGET, "DS1_070o")
 
 
@@ -84,7 +85,8 @@ class EX1_538:
 
 # Kill Command
 class EX1_539:
-	play = Find(FRIENDLY_MINIONS + BEAST) & Hit(TARGET, 5) | Hit(TARGET, 3)
+	powered_up = Find(FRIENDLY_MINIONS + BEAST)
+	play = powered_up & Hit(TARGET, 5) | Hit(TARGET, 3)
 
 
 # Flare

fireplace/cards/data/__init__.py

@@ -10,7 +10,6 @@
 import chooseone
 import enrage
 import missing_cards
-import powerups
 
 
 italicize = [
@@ -45,14 +44,6 @@ def add_hero_power(card, id):
 	print("%s: Adding hero power %r" % (card, id))
 
 
-def add_powerup_requirements(card, race):
-	req = ElementTree.Element("PowerUpRequirement")
-	req.attrib["reqID"] = "1"
-	req.attrib["param"] = str(int(race))
-	card.xml.append(req)
-	print("%s: Adding POWERED_UP definition of %r" % (card.name, race))
-
-
 def fix_entourage(card, guids):
 	for entourage in card.xml.findall("EntourageCard"):
 		guid = entourage.attrib["cardID"]
@@ -180,9 +171,6 @@ def main():
 		if id in hero_powers:
 			add_hero_power(card, hero_powers[id])
 
-		if hasattr(powerups, id):
-			add_powerup_requirements(card, getattr(powerups, id))
-
 		if re.match(r"^PART_\d+$", id):
 			# Hearthstone uses entourage data to identify Spare Parts
 			# We're better than that.

fireplace/cards/gvg/druid.py

@@ -34,7 +34,8 @@ class GVG_035:
 
 # Druid of the Fang
 class GVG_080:
-	play = Find(FRIENDLY_MINIONS + BEAST) & Morph(SELF, "GVG_080t")
+	powered_up = Find(FRIENDLY_MINIONS + BEAST)
+	play = powered_up & Morph(SELF, "GVG_080t")
 
 
 ##

fireplace/cards/gvg/mage.py

@@ -13,7 +13,8 @@ class GVG_002:
 
 # Goblin Blastmage
 class GVG_004:
-	play = Find(FRIENDLY_MINIONS + MECH) & Hit(RANDOM_ENEMY_CHARACTER, 1) * 4
+	powered_up = Find(FRIENDLY_MINIONS + MECH)
+	play = powered_up & Hit(RANDOM_ENEMY_CHARACTER, 1) * 4
 
 
 # Flame Leviathan

fireplace/cards/gvg/neutral_common.py

@@ -61,9 +61,8 @@ class GVG_096:
 
 # Tinkertown Technician
 class GVG_102:
-	play = (Find(FRIENDLY_MINIONS + MECH) & (
-		Buff(SELF, "GVG_102e"), Give(CONTROLLER, RandomSparePart())
-	))
+	powered_up = Find(FRIENDLY_MINIONS + MECH)
+	play = powered_up & (Buff(SELF, "GVG_102e"), Give(CONTROLLER, RandomSparePart()))
 
 
 # Micro Machine

fireplace/cards/gvg/warrior.py

@@ -11,6 +11,7 @@ class GVG_053:
 
 # Screwjank Clunker
 class GVG_055:
+	powered_up = Find(FRIENDLY_MINIONS + MECH)
 	play = Buff(TARGET, "GVG_055e")
 
 

fireplace/cardxml.py

@@ -16,9 +16,6 @@ def __init__(self, xml):
 		e = self.xml.findall("Power[PlayRequirement]/PlayRequirement")
 		self.requirements = self._getRequirements(e)
 
-		e = self.xml.findall("PowerUpRequirement")
-		self.powerup_requirements = [Race(int(tag.attrib["param"])) for tag in e]
-
 		e = self.xml.findall("./EnrageDefinition/Tag")
 		self.enrage_tags = {
 			GameTag(int(tag.attrib["enumID"])): self._get_tag(tag) for tag in e