Character unable to jump when falling off an edge

src/engine/character/mod.rs

@@ -81,6 +81,7 @@ pub struct Character {
 
 impl Character {
 
+    /// Creates a character in (0, 0).
     fn generic(controls: Option<Controls>) -> Character {
         Character {
             position: Vector2::new(0.0, 0.0),
@@ -121,6 +122,13 @@ impl Character {
         self.jump_counter = self.max_jump;
     }
 
+    /// Make the player fall.
+    pub fn fall_off(&mut self) {
+        if self.jump_counter == self.max_jump {
+            self.jump_counter -= 1;
+        }
+    }
+
 }
 
 impl Updatable for Character {