add version checking, add gitignore

.gitignore

@@ -0,0 +1 @@
+/__pycache__/

setage.py

@@ -11,7 +11,7 @@ from base64 import b64decode
 __author__ = "Cheri Dawn"
 __copyright__ = "Copyright 2024, Cheri Dawn"
 __license__ = "GPL-3.0-only"
-__version__ = "0.3.0"
+__version__ = "0.3.1"
 __maintainer__ = "Cheri Dawn"
 __status__ = "Prototype"
 
@@ -22,6 +22,21 @@ current_room_id = ""
 inventory = []
 
 
+def parse_version(ver):
+    if len(ver) < 1:
+        raise ValueError("empty version string")
+    if ver[0] == "v":
+        ver = ver[1:]
+    try:
+        ver = [int(x) for x in ver.split(".")]
+    except ValueError:
+        raise ValueError("non integer version")
+    return tuple(ver)
+
+
+VERSION = parse_version(__version__)
+
+
 def print_items(cur_room):
     if "items" not in cur_room:
         return
@@ -498,6 +513,11 @@ if __name__ == "__main__":
         print("FATAL: "
               "table `scenario` does not exist in manifest.")
         exit(2)
+    if "min_version" not in manifest["scenario"]:
+        print("WARNING: no minimum SETAGE version specified in manifest.")
+    else:
+        if VERSION < parse_version(manifest["scenario"]["min_version"]):
+            print("FATAL: SETAGE version doesn't match required version.")
     if "rooms" not in manifest:
         print("FATAL: "
               "table `rooms` does not exist in manifest.")

test-game/manifest.setage

@@ -2,6 +2,7 @@
 author = "Cheri Dawn"
 year = "2024"
 license = "CC0"
+version = "2"
 
 
 [scenario]
@@ -9,6 +10,8 @@ start = "1"
 title = "Dust Bunnies"
 intro = "You wake up in a very dusty and old-looking room.\nYou think you can get out of here if you find something that could help you remember..."
 prompt = ": "
+min_version = "0.3"
+playtested = true
 
 [scenario.endings.1]
 trigger = "item"