convert old objects into new ones when loading them

asciifarm/server/gameobjects/__init__.py

@@ -2,6 +2,7 @@
 
 from ..entity import Entity
 
+from .conversions import convert
 from .base import entities as base
 from .crops import entities as crops
 from .exchangers import entities as exchangers
@@ -27,8 +28,11 @@ def createEntity(data):
     elif isinstance(data, dict):
         if "type" in data:
             obj = entities[data["type"]](*(data.get("args", [])), **(data.get("kwargs", {})))
+        elif "components" in data:
+            obj = createEntity(convert(data))
+            #obj = Entity.fromJSON(data)
         else:
-            obj = Entity.fromJSON(data)
+            raise ValueError("invalid entity data: " + str(data))
     return obj
 
 def buildEntity(data, roomData, preserve=False):

asciifarm/server/gameobjects/conversions.py

@@ -0,0 +1,19 @@
+
+
+conversions = {
+    "food": "eldritch_radish",
+    "sword": "sword",
+    "godsword": {"type": "weapon", "kwargs": {"strength": 500, "name": "godsword"}},
+    "pebble": "pebble",
+    "club": "club",
+    "seed": "radishseed",
+    "stone": "stone",
+    "wall": "wall",
+    "armour": "armour"
+}
+
+def convert(item):
+    name = item["name"]
+    if name in conversions:
+        return conversions[name]
+    raise ValueError("Unknown old object:", str(item))

asciifarm/server/gameobjects/crops.py

@@ -95,14 +95,16 @@ createCrop("radish", [
     Stage("{}plant", sprite="smallplant", height=0.5, harvest=[("radishseed", .92), ("radishseed", .20), ("radishes", .8), ("radishes", .4)])
     ], 10)
 
-entities["radishes"] = lambda: Entity(sprite="food", name="radishes", height=0.3, components={"item": Food(2), "serialize": Static("radishes")})
+entities["radish"] = lambda: Entity(sprite="food", name="radish", height=0.3, components={"item": Food(2), "serialize": Static("radishes")})
 
-entities["food"] = entities["radishes"]
+entities["food"] = entities["radish"]
+entities["radishes"] = entities["radish"]
 entities["sownseed"] = entities["plantedradishseed"]
 entities["youngplant"] = entities["youngradishplant"]
 entities["plant"] = entities["radishplant"]
 entities["seed"] = entities["radishseed"]
 
 
+entities["eldritch_radish"] = lambda: Entity(sprite="food", name="eldritch radish", height=0.3, components={"item": Food(20), "serialize": Static("eldritch_radish")})
 
 

asciifarm/server/main.py

@@ -38,7 +38,7 @@ def main(argv=None):
     sockets = []
     for socktype, address in socketargs:
         assert socktype in ["abstract", "unix", "inet"]
-        if address is "":
+        if address == "":
             address = defaultAdresses[socktype]
         if socktype == "abstract":
             address = '\0' + address