Hit effect

camera_iso.gd

@@ -5,12 +5,33 @@ extends Camera3D
 @export var horizontal_angle_deg: float = 45.0
 @export var ortho_size: float = 15.0
 
+const _FLASH_DURATION: float = 0.30
+
+var _shake_amount: float = 0.0
+var _shake_decay: float = 0.0
+var _flash_timer: float = 0.0
+var _flash_rect: ColorRect = null
+
+
 func _ready() -> void:
 	set_as_top_level(true)
 	projection = PROJECTION_ORTHOGONAL
 	size = ortho_size
+	_setup_flash()
 
-func _process(_delta: float) -> void:
+
+func _setup_flash() -> void:
+	var canvas := CanvasLayer.new()
+	canvas.layer = 20
+	add_child(canvas)
+	_flash_rect = ColorRect.new()
+	_flash_rect.set_anchors_and_offsets_preset(Control.PRESET_FULL_RECT)
+	_flash_rect.color = Color(1.0, 0.25, 0.2, 0.0)
+	_flash_rect.mouse_filter = Control.MOUSE_FILTER_IGNORE
+	canvas.add_child(_flash_rect)
+
+
+func _process(delta: float) -> void:
 	var angle_rad := deg_to_rad(horizontal_angle_deg)
 	var offset := Vector3(
 		sin(angle_rad) * horizontal_distance,
@@ -20,3 +41,23 @@ func _process(_delta: float) -> void:
 	var target := get_parent() as Node3D
 	global_position = target.global_position + offset
 	look_at(target.global_position, Vector3.UP)
+
+	if _shake_amount > 0.005:
+		global_position += Vector3(
+			randf_range(-_shake_amount, _shake_amount),
+			randf_range(-_shake_amount * 0.25, _shake_amount * 0.25),
+			randf_range(-_shake_amount, _shake_amount),
+		)
+		_shake_amount = move_toward(_shake_amount, 0.0, _shake_decay * delta)
+
+	if _flash_timer > 0.0:
+		_flash_timer = maxf(0.0, _flash_timer - delta)
+		_flash_rect.color.a = (_flash_timer / _FLASH_DURATION) * 0.6
+	else:
+		_flash_rect.color.a = 0.0
+
+
+func trigger_hit(strength: float) -> void:
+	_shake_amount = strength * 0.5
+	_shake_decay = _shake_amount / 0.4
+	_flash_timer = _FLASH_DURATION