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fix compression: shift encoded values by 1 to differentiate 0 and null

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This commit is contained in:
Maximilian Keßler 2023-03-03 11:17:31 +01:00
parent d7387574ea
commit d0ba1f4b4a
Signed by: max
GPG key ID: BCC5A619923C0BA5
1 changed files with 9 additions and 5 deletions
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14
compress.py
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@ -5,7 +5,7 @@ import more_itertools
BASE62 = "abcdefghijklmnopqrstuvwxyz0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ";
COLORS = 'rygbp'
COLORS = 'rygbpt'
# Some setup for conversion between variant id and name
@ -77,7 +77,7 @@ class Action():
case ActionType.EndGame:
return "Player {} ends the game (code {})".format(self.target, self.value)
case ActionType.VoteTerminate:
return "Players vote to terminate the game"
return "Players vote to terminate the game (code {})".format(self.value)
return "Undefined action"
@ -89,7 +89,9 @@ def compress_actions(actions: List[Action]) -> str:
maxType = max(map(lambda a: a.type.value, actions))
typeRange = maxType - minType + 1
def compress_action(action):
value = 0 if action.value is None else action.value
## We encode action values with +1 to differentiate
# null (encoded 0) and 0 (encoded 1)
value = 0 if action.value is None else action.value + 1
a = BASE62[typeRange * value + (action.type.value - minType)]
b = BASE62[action.target]
return a + b
@ -112,7 +114,10 @@ def decompress_actions(actions_str: str) -> List[Action]:
actionType = ActionType((BASE62.index(action[0]) % typeRange) + minType)
value = None
if actionType not in [actionType.Play, actionType.Discard]:
value = BASE62.index(action[0]) // typeRange
## We encode values with +1 to differentiate null (encoded 0) and 0 (encoded 1)
value = BASE62.index(action[0]) // typeRange - 1
if value == -1:
value = None
target = BASE62.index(action[1])
return Action(actionType, target, value)
return [decompress_action(a) for a in chunks(actions_str[2:], 2)]
@ -194,4 +199,3 @@ def decompressJSONGame(game_str: str)->dict:
"variant": variant_name(int(variant_id))
}
return game