Add B/W encounter methods and conditions

Spots: it might seem like they should be conditions, but in practice
they behave more like methods. Specifically, conditions typically make
only minor changes to an encounter list. Spots change everything.
So spots are added as methods, with each type of spot as a separate
method. Not exactly ideal, but this causes the least fuss.

Seasons work fine as conditions.

Well, as well as time-of-day.

pokedex/data/csv/encounter_condition_prose.csv

@@ -4,3 +4,4 @@ encounter_condition_id,local_language_id,name
 3,9,PokeRadar
 4,9,Gen 3 game in slot 2
 5,9,Radio
+6,9,Season

pokedex/data/csv/encounter_condition_value_prose.csv

@@ -15,3 +15,7 @@ encounter_condition_value_id,local_language_id,name
 14,9,Radio off
 15,9,Hoenn radio
 16,9,Sinnoh radio
+17,9,During Spring
+18,9,During Summer
+19,9,During Autumn
+20,9,During Winter

pokedex/data/csv/encounter_condition_values.csv

@@ -15,3 +15,7 @@ id,encounter_condition_id,identifier,is_default
 14,5,radio-off,1
 15,5,radio-hoenn,0
 16,5,radio-sinnoh,0
+17,6,season-spring,0
+18,6,season-summer,0
+19,6,season-autumn,0
+20,6,season-winter,0

pokedex/data/csv/encounter_conditions.csv

@@ -4,3 +4,4 @@ id,identifier
 3,radar
 4,slot2
 5,radio
+6,season

pokedex/data/csv/encounter_method_prose.csv

@@ -6,3 +6,9 @@ encounter_method_id,local_language_id,name
 5,9,Surfing
 6,9,Smashing rocks
 7,9,Headbutting trees
+8,9,Walking in dark grass
+9,9,Walking in rustling grass
+10,9,Walking in dust clouds
+11,9,Walking in bridge shadows
+12,9,Fishing in dark spots
+13,9,Surfing in dark spots

pokedex/data/csv/encounter_methods.csv

@@ -1,8 +1,14 @@
-id,identifier
-1,walk
-2,old-rod
-3,good-rod
-4,super-rod
-5,surf
-6,rock-smash
-7,headbutt
+id,identifier,order
+1,walk,1
+2,old-rod,6
+3,good-rod,7
+4,super-rod,8
+5,surf,10
+6,rock-smash,12
+7,headbutt,13
+8,dark-grass,5
+9,grass-spots,2
+10,cave-spots,3
+11,bridge-spots,4
+12,super-rod-spots,9
+13,surf-spots,11

pokedex/db/tables.py

@@ -779,6 +779,8 @@ class EncounterMethod(TableBase):
         info=dict(description="A unique ID for the method"))
     identifier = Column(Unicode(16), nullable=False, unique=True,
         info=dict(description="An identifier", format='identifier'))
+    order = Column(Integer, unique=True, nullable=False,
+        info=dict(description="A good column for sorting on"))
 
 create_translation_table('encounter_method_prose', EncounterMethod, 'prose',
     name = Column(Unicode(64), nullable=False, index=True,