diff --git a/src/player.rs b/src/player.rs
index 92a2b67..738a662 100644
--- a/src/player.rs
+++ b/src/player.rs
@@ -45,14 +45,16 @@ pub struct Player {
     pub update_target: bool,
     pub stars: u8,
     pub damage: u16,
+    pub air_counter: u16,
+    pub air: u16,
     weapon_offset_y: i8,
     index_x: isize,
     index_y: isize,
     splash: bool,
     booster_switch: u8,
     bubble: u8,
-    exp_wait: isize,
-    exp_count: isize,
+    damage_counter: u16,
+    damage_taken: i16,
     anim_num: u16,
     anim_counter: u16,
     anim_rect: Rect<usize>,
@@ -93,9 +95,11 @@ impl Player {
             booster_switch: 0,
             stars: 0,
             damage: 0,
+            air_counter: 0,
+            air: 0,
             bubble: 0,
-            exp_wait: 0,
-            exp_count: 0,
+            damage_counter: 0,
+            damage_taken: 0,
             anim_num: 0,
             anim_counter: 0,
             anim_rect: constants.my_char.animations_right[0],
@@ -104,11 +108,37 @@ impl Player {
     }
 
     fn tick_normal(&mut self, state: &mut SharedGameState) -> GameResult {
+        if !state.control_flags.interactions_disabled() && state.control_flags.control_enabled() {
+            if self.equip.has_air_tank() {
+                self.air = 1000;
+                self.air_counter = 0;
+            } else if self.flags.in_water() {
+                self.air_counter = 60;
+                if self.air > 0 {
+                    self.air -= 1;
+                } else {
+                    self.cond.set_hidden(true);
+                    state.textscript_vm.start_script(41);
+                    state.create_caret(self.x, self.y, CaretType::DrownedQuote, self.direction);
+                }
+            } else {
+                self.air = 1000;
+
+                if self.air_counter > 0 {
+                    self.air_counter -= 1;
+                }
+            }
+        }
+
         if self.cond.hidden() {
             return Ok(());
         }
 
-        let physics = if self.flags.in_water() { state.constants.my_char.water_physics } else { state.constants.my_char.air_physics };
+        let physics = if self.flags.in_water() {
+            state.constants.my_char.water_physics
+        } else {
+            state.constants.my_char.air_physics
+        };
 
         self.question = false;
 
@@ -572,29 +602,21 @@ impl GameEntity<()> for Player {
             return Ok(());
         }
 
-        if self.exp_wait != 0 {
-            self.exp_wait -= 1;
+        if self.damage_counter != 0 {
+            self.damage_counter -= 1;
         }
 
         if self.shock_counter != 0 {
             self.shock_counter -= 1;
-        } else if self.exp_count != 0 {
+        } else if self.damage_taken != 0 {
             // SetValueView(&self.x, &self.y, self.exp_count); // todo: damage popup
-            self.exp_count = 0;
+            self.damage_taken = 0;
         }
 
         // todo: add additional control modes like NXEngine has such as noclip?
         match self.control_mode {
-            ControlMode::Normal => {
-                if state.control_flags.interactions_disabled() && state.control_flags.control_enabled() {
-                    // AirProcess(); // todo
-                }
-
-                self.tick_normal(state)?;
-            }
-            ControlMode::IronHead => {
-                self.tick_ironhead(state)?;
-            }
+            ControlMode::Normal => self.tick_normal(state)?,
+            ControlMode::IronHead => self.tick_ironhead(state)?,
         }
 
         self.cond.set_increase_acceleration(false);
diff --git a/src/scene/game_scene.rs b/src/scene/game_scene.rs
index a424448..bd30202 100644
--- a/src/scene/game_scene.rs
+++ b/src/scene/game_scene.rs
@@ -150,13 +150,24 @@ impl GameScene {
         if self.player.max_life != 0 {
             // life box
             batch.add_rect(16.0, 40.0,
-                           &Rect::<usize>::new_size(0, 40, 64, 8));
+                           &Rect::new_size(0, 40, 64, 8));
             // yellow bar
             batch.add_rect(40.0, 40.0,
-                           &Rect::<usize>::new_size(0, 32, ((self.life_bar as usize * 40) / self.player.max_life as usize), 8));
+                           &Rect::new_size(0, 32, ((self.life_bar as usize * 40) / self.player.max_life as usize), 8));
             // life
             batch.add_rect(40.0, 40.0,
-                           &Rect::<usize>::new_size(0, 24, ((self.player.life as usize * 40) / self.player.max_life as usize), 8));
+                           &Rect::new_size(0, 24, ((self.player.life as usize * 40) / self.player.max_life as usize), 8));
+        }
+
+        if self.player.air_counter > 0 {
+            let rect = if self.player.air % 30 > 10 {
+                Rect::new_size(112, 72, 32, 8)
+            } else {
+                Rect::new_size(112, 80, 32, 8)
+            };
+
+            batch.add_rect((state.canvas_size.0 / 2.0).floor() - 40.0,
+                           (state.canvas_size.1 / 2.0).floor(), &rect);
         }
 
         batch.draw(ctx)?;
@@ -192,6 +203,12 @@ impl GameScene {
 
         batch.draw(ctx)?;
 
+        if self.player.air_counter > 0 && self.player.air_counter % 6 < 4 {
+            self.draw_number((state.canvas_size.0 / 2.0).floor() + 8.0,
+                             (state.canvas_size.1 / 2.0).floor(),
+                             (self.player.air / 10) as usize, Alignment::Left, state, ctx)?;
+        }
+
         if max_ammo != 0 {
             self.draw_number(weap_x + 64.0, 16.0, ammo as usize, Alignment::Right, state, ctx)?;
             self.draw_number(weap_x + 64.0, 24.0, max_ammo as usize, Alignment::Right, state, ctx)?;
@@ -1104,9 +1121,6 @@ impl Scene for GameScene {
         self.player.target_y = self.player.y;
         self.frame.immediate_update(state, &self.player, &self.stage);
 
-        // self.inventory.add_weapon(WeaponType::PolarStar, 0);
-        // self.inventory.add_xp(120, state);
-        // self.player.equip.set_booster_2_0(true);
         Ok(())
     }