diff --git a/dungeonbattle/proof_of_concept.py b/dungeonbattle/proof_of_concept.py
index 046d687..fd3b85f 100644
--- a/dungeonbattle/proof_of_concept.py
+++ b/dungeonbattle/proof_of_concept.py
@@ -1,19 +1,15 @@
 #!/usr/bin/env python
+from .interfaces import Map
 from .term_manager import TermManager
 
 
 def proof_of_concept() -> None:
-    matrix = []
-    with open("example_map.txt") as f:
-        for line in f.readlines():
-            matrix.append(line[:-1])
+    m = Map.load("example_map.txt")
 
     with TermManager() as term_manager:
         stdscr = term_manager.screen
 
-        for y in range(len(matrix)):
-            for x in range(len(matrix[0])):
-                stdscr.addstr(y, x, matrix[y][x])
+        stdscr.addstr(0, 0, m.draw_string())
         stdscr.refresh()
 
         cur = [1, 6]    # (y,x)
@@ -24,17 +20,17 @@ def proof_of_concept() -> None:
             key = stdscr.getkey()
             stdscr.addstr(cur[0], cur[1], '.')
             if key == 'z' or key == 'KEY_UP':
-                if cur[0] > 0 and matrix[cur[0] - 1][cur[1]] != '#':
+                if cur[0] > 0 and m.tiles[cur[0] - 1][cur[1]].value != '#':
                     cur[0] = cur[0] - 1
             if key == 's' or key == 'KEY_DOWN':
-                if cur[0] < len(matrix) - 1 and \
-                        matrix[cur[0] + 1][cur[1]] != '#':
+                if cur[0] < m.height - 1 and \
+                        m.tiles[cur[0] + 1][cur[1]].value != '#':
                     cur[0] = cur[0] + 1
             if key == 'q' or key == 'KEY_LEFT':
-                if cur[1] > 0 and matrix[cur[0]][cur[1] - 1] != '#':
+                if cur[1] > 0 and m.tiles[cur[0]][cur[1] - 1].value != '#':
                     cur[1] = cur[1] - 1
             if key == 'd' or key == 'KEY_RIGHT':
-                if cur[1] < len(matrix[0]) and \
-                        matrix[cur[0]][cur[1] + 1] != '#':
+                if cur[1] < m.width and \
+                        m.tiles[cur[0]][cur[1] + 1].value != '#':
                     cur[1] = cur[1] + 1
             stdscr.addstr(cur[0], cur[1], '@')