Implement condition functions

lambdaV.py

@@ -74,30 +74,51 @@ def draw_field():
                 print(field[row][column], end="")
         print("")
 
-def condition_in_front_of_wall(inverted):
-    return False
-
-def condition_goal_reached(inverted):
-    return False
-
-def condition_on_apple(inverted):
-    return False
 
 def condition_facing_north(inverted):
-    return False
+    if inverted:
+        return not cursor_current == cursor_north
+    return cursor_current == cursor_north
 
 def condition_facing_south(inverted):
-    return False
+    if inverted:
+        return not cursor_current == cursor_south
+    return cursor_current == cursor_south
 
 def condition_facing_east(inverted):
-    return False
+    if inverted:
+        return not cursor_current == cursor_east
+    return cursor_current == cursor_east
 
 def condition_facing_west(inverted):
-    return False
+    if inverted:
+        return not cursor_current == cursor_west
+    return cursor_current == cursor_west
 
-# condition prefixed with !
-def modifier_not(condition):
-    return condition(true)
+def condition_in_front_of_wall(inverted):
+    if condition_facing_north(False):
+        result = field[cursor_position[1]-1][cursor_position[0]]==wall or field[cursor_position[1]-1][cursor_position[0]]=='_'
+    elif condition_facing_south(False):
+        result = field[cursor_position[1]+1][cursor_position[0]]==wall or field[cursor_position[1]+1][cursor_position[0]]=='¯'
+    elif condition_facing_east(False):
+        result = field[cursor_position[1]][cursor_position[0]+1]==wall or field[cursor_position[1]][cursor_position[0]+1]=='|'
+    elif condition_facing_west(False):
+        result = field[cursor_position[1]][cursor_position[0]-1]==wall or field[cursor_position[1]][cursor_position[0]-1]=='|'
+    else:
+        result = False
+    if inverted:
+        return not result
+    return result
+
+def condition_goal_reached(inverted):
+    if inverted:
+        return not field[cursor_position[1]][cursor_position[2]]==goal
+    return field[cursor_position[1]][cursor_position[2]]==goal
+
+def condition_on_apple(inverted):
+    if inverted:
+        return not field[cursor_position[1]][cursor_position[2]]==apple
+    return field[cursor_position[1]][cursor_position[2]]==apple
 
 # return value: "" or error message
 def command_step():