add shaking when hitting projectile

scripts/main_camera.gd

@@ -4,6 +4,7 @@ extends Camera3D
 @export_group("Positioning")
 @export var _height_offset: float = 0.5
 @export var _distance: float = 50
+@export var _fov: float = 25
 @export var _angle_degrees: Vector3 = Vector3(-35, -45, 0)
 @export var _aim_offset_factor_mouse: float = 0.2
 @export var _aim_offset_factor_controller: float = 0.5
@@ -15,8 +16,14 @@ extends Camera3D
 @export var _damage_shake_amplitude: float = 0.02
 @export var _damage_shake_frequency: float = 50
 
+@export_group("Hit shake")
+@export var _hit_shake_fov: float = 0.5
+@export var _hit_shake_duration: float = 0.5
+@export_exp_easing var _hit_shake_ease: float = 2
+
 var _player_offsets: Dictionary[int, PlayerOffset]
 var _damage_shake_time: float = 0
+var _hit_shake_time: float = 0
 
 @onready var _listener := $AudioListener3D as AudioListener3D
 
@@ -30,7 +37,9 @@ func _ready() -> void:
 
 func _process(delta: float) -> void:
 	global_rotation_degrees = _angle_degrees
+	fov = _fov
 	_damage_shake(delta)
+	_hit_shake(delta)
 
 
 func _physics_process(delta: float) -> void:
@@ -46,6 +55,7 @@ func _physics_process(delta: float) -> void:
 
 func _connect_player_signals(player: Player) -> void:
 	player.stats.damaged.connect(_on_player_stats_damaged)
+	player.attack.did_hit.connect(_on_player_attack_did_hit)
 
 
 func _follow(player: Player, delta: float) -> Vector3:
@@ -105,10 +115,24 @@ func _damage_shake(delta: float) -> void:
 	)
 
 
+func _hit_shake(delta: float) -> void:
+	if _hit_shake_time <= 0:
+		return
+
+	_hit_shake_time -= delta
+	fov += (
+		_hit_shake_fov * ease(_hit_shake_time / _hit_shake_duration, _hit_shake_ease)
+	)
+
+
 func _on_player_stats_damaged() -> void:
 	_damage_shake_time = _damage_shake_duration
 
 
+func _on_player_attack_did_hit() -> void:
+	_hit_shake_time = _hit_shake_duration
+
+
 class PlayerOffset:
 	var floor_height: float = 0
 	var aim_offset: Vector3 = Vector3.ZERO

scripts/player/player_attack.gd

@@ -2,6 +2,7 @@ class_name PlayerAttack
 extends Area3D
 
 signal attacked
+signal did_hit
 
 enum Side { RIGHT, LEFT }
 
@@ -149,3 +150,4 @@ func _on_area_entered(node: Node3D) -> void:
 
 	if node is Projectile:
 		_hit_projectile(node as Projectile)
+		did_hit.emit()