Add map writing.

[plomrogue2-experiments] / new2 / plomrogue / mapping.py

diff --git a/new2/plomrogue/mapping.py b/new2/plomrogue/mapping.py
index aa5af2c6778c33444e51de1f74236e61a8442838..cd0c23def676edd8eb146fca15da7c781201fb28 100644 (file)
--- a/new2/plomrogue/mapping.py
+++ b/new2/plomrogue/mapping.py
@@ -17,6 +17,9 @@ class YX(collections.namedtuple('YX', ('y', 'x'))):
 
 class MapGeometry():
 
+    def __init__(self, size):
+        self.size = size
+
     def get_directions(self):
         directions = []
         for name in dir(self):
@@ -26,7 +29,11 @@ class MapGeometry():
 
     def move(self, start_pos, direction):
         mover = getattr(self, 'move_' + direction)
-        return mover(start_pos)
+        target = mover(start_pos)
+        if target.y < 0 or target.x < 0 or \
+                target.y >= self.size.y or target.x >= self.size.x:
+            return None
+        return target
 
 
 
@@ -47,3 +54,28 @@ class MapGeometrySquare(MapGeometryWithLeftRightMoves):
 
     def move_DOWN(self, start_pos):
         return YX(start_pos.y + 1, start_pos.x)
+
+
+
+class Map():
+
+    def __init__(self, map_size):
+        self.size = map_size
+        self.terrain = '.' * self.size_i
+
+    def __getitem__(self, yx):
+        return self.terrain[self.get_position_index(yx)]
+
+    def __setitem__(self, yx, c):
+        pos_i = self.get_position_index(yx)
+        if type(c) == str:
+            self.terrain = self.terrain[:pos_i] + c + self.terrain[pos_i + 1:]
+        else:
+            self.terrain[pos_i] = c
+
+    @property
+    def size_i(self):
+        return self.size.y * self.size.x
+
+    def get_position_index(self, yx):
+        return yx.y * self.size.x + yx.x