Merge branch 'stats' into 'master'

The strength of the player is now increased when he levels up

See merge request ynerant/squirrel-battle!19

squirrelbattle/entities/player.py

@@ -28,7 +28,8 @@ class Player(FightingEntity):
 
     def move(self, y: int, x: int) -> None:
         """
-        When the player moves, move the camera of the map.
+        Moves the view of the map (the point on which the camera is centered)
+        according to the moves of the player.
         """
         super().move(y, x)
         self.map.currenty = y
@@ -44,6 +45,7 @@ class Player(FightingEntity):
             self.current_xp -= self.max_xp
             self.max_xp = self.level * 10
             self.health = self.maxhealth
+            self.strength = self.strength + 1
             # TODO Remove it, that's only fun
             self.map.spawn_random_entities(randint(3 * self.level,
                                                    10 * self.level))
@@ -62,7 +64,7 @@ class Player(FightingEntity):
         """
         If the player tries to move but a fighting entity is there,
         the player fights this entity.
-        It rewards some XP if it is dead.
+        If the entity dies, the player is rewarded with some XP
         """
         # Don't move if we are dead
         if self.dead: