refactored CharMap out of Display

1 files changed, 50 insertions, 0 deletions

diff --git a/asciifarmclient/charmap.py b/asciifarmclient/charmap.py
new file mode 100644
index 0000000..43ae006
--- /dev/null
+++ b/asciifarmclient/charmap.py
@@ -0,0 +1,50 @@
+
+
+from .utils import get
+from ratuil.textstyle import TextStyle
+
+ALPHABET = "!\"#$%&'()*+,-./0123456789:;<=>?@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\\]^_`abcdefghijklmnopqrstuvwxyz{|}~"
+
+def parseSprite(sprite):
+    if isinstance(sprite, str):
+        return (sprite, None, None)
+    char = get(sprite, 0, " ")
+    fg = get(sprite, 1)
+    bg = get(sprite, 2)
+    return (char, fg, bg)
+
+class CharMap:
+    
+    def __init__(self):
+        self.mapping = {}
+        self.default = ("?", None, None)
+        self.message_styles = {}
+        self.default_message_style = TextStyle()
+        self.character_width = 1
+        self.alphabet = ALPHABET
+    
+    def get(self, spritename):
+        return self.mapping.get(spritename, self.default)
+    
+    def get_message_style(self, msgtype):
+        return self.message_styles.get(msgtype, self.default_message_style)
+    
+    def apply_json(self, jsonmap):
+        for name, sprite in jsonmap.get("mapping", {}).items():
+            vals = parseSprite(sprite)
+            self.mapping[name] = vals
+        
+        self.alphabet = jsonmap.get("alphabet", self.alphabet)
+        
+        for name, colours in jsonmap.get("writable", {}).items():
+            fg = get(colours, 0)
+            bg = get(colours, 1)
+            for (letter, character) in zip(ALPHABET, self.alphabet):
+                self.mapping[name + '-' + letter] = (character, fg, bg)
+    
+        if "default" in jsonmap:
+            self.default = parseSprite(jsonmap["default"])
+        for name, colour in jsonmap.get("msgcolours", {}).items():
+            self.message_styles[name] = TextStyle(*colour)
+        self.character_width = jsonmap.get("charwidth", self.character_width)
+