Added energy and replenishment

entities/Player.gd

@@ -24,7 +24,7 @@ enum PlayerState {
 }
 
 var score : int = 0
-var energy : float = 1.0
+var energy : float = 100.0
 var state : PlayerState = PlayerState.Alive
 var state_last : PlayerState = PlayerState.Dead
 
@@ -39,7 +39,10 @@ var coloring_bomb_sprite : Sprite2D
 const SPEED = 5.0
 const DASH_SPEED: float = 20
 const DASH_DURATION: float = 0.2
+const DASH_ENERGY: float = 40
 const BOMB_DURATION: float = 0.1
+const BOMB_ENERGY: float = 60
+const ENERGY_REPLENISH_RATE: float = 0.5;
 
 # Get the gravity from the project settings to be synced with RigidBody nodes.
 var gravity = ProjectSettings.get_setting("physics/3d/default_gravity")
@@ -53,6 +56,9 @@ func _ready():
 	coloring_bomb_sprite.visible = false
 
 func _physics_process(delta):
+	if energy < 100:
+		energy = min (100, energy + delta + ENERGY_REPLENISH_RATE)
+	
 	if state_last != state:
 		if state == PlayerState.Alive:
 			on_player_spawn()
@@ -85,9 +91,10 @@ func _physics_process(delta):
 			coloring_bomb_sprite.visible = false
 			bomb_time = 0
 	else:
-		if Input.is_action_just_pressed(bomb_action) and state == PlayerState.Alive:
-			coloring_bomb_sprite.visible = true;
-			bomb_time = BOMB_DURATION
+		if Input.is_action_just_pressed(bomb_action) \
+			and state == PlayerState.Alive \
+			and energy > BOMB_ENERGY:
+			on_drop_bomb()
 		
 	# Get the input direction and handle the movement/deceleration.
 	# As good practice, you should replace UI actions with custom gameplay actions.
@@ -103,9 +110,10 @@ func _physics_process(delta):
 		velocity.z = move_toward(velocity.z, 0, SPEED)
 		geometry.global_basis = Basis.from_euler(Vector3(0, -angle, 0))
 	
-	if state == PlayerState.Alive and Input.is_action_just_pressed(dash_action):
-		is_dashing = true;
-		dash_time = DASH_DURATION
+	if Input.is_action_just_pressed(dash_action) \
+		and state == PlayerState.Alive \
+		and energy > DASH_ENERGY:
+		on_dash()
 		
 	if is_dashing:
 		velocity.x = sin(angle) * DASH_SPEED
@@ -134,3 +142,13 @@ func on_player_falling():
 
 func on_player_dead():
 	print ("Player " + str(self) + ": death")
+
+func on_dash():
+	is_dashing = true;
+	dash_time = DASH_DURATION
+	energy = max (0, energy - DASH_ENERGY)
+	
+func on_drop_bomb():
+	coloring_bomb_sprite.visible = true;
+	bomb_time = BOMB_DURATION
+	energy = max (0, energy - BOMB_ENERGY)