实现八音盒小游戏所有玩法细节

scene/little_game/gadget/wheel.gd

@@ -0,0 +1,47 @@
+extends Control
+
+# A wheel that can be rotated by the player.
+# Detects the angle of the wheel and emits a signal when the wheel is rotated.
+# The value might be positive or negative, and the negative value means the wheel is rotated in clockwise.
+signal rotated(radiant: float)
+
+@export var enabled := true:
+	set(val):
+		enabled = val
+		dragging = false
+@export var min_angle := 30.0
+@export var one_direction := true
+@export var clockwise := true
+
+var start_pos := Vector2.ZERO
+var dragging := false
+
+
+func _input(event: InputEvent) -> void:
+	if not enabled:
+		return
+	if event is InputEventMouseButton:
+		if event.button_index == MOUSE_BUTTON_LEFT:
+			if event.pressed:
+				start_pos = event.position
+				dragging = true
+			else:
+				dragging = false
+		# print("mouse button")
+	elif event is InputEventMouseMotion:
+		if dragging:
+			var current_pos = event.position
+			# current node's viewport position
+			var origin := get_viewport().global_canvas_transform * global_position
+			# Calculate the angle between the start_pos and the current_pos around the origin.
+			var radiant = (current_pos - origin).angle_to(start_pos - origin)
+			var min_rad = min_angle * PI / 180
+			if abs(radiant) > min_rad:
+				# check if the wheel is rotated in the correct direction
+				if one_direction:
+					if (clockwise and radiant > 0) or (not clockwise and radiant < 0):
+						start_pos = current_pos
+						return
+				rotated.emit(radiant)
+				start_pos = current_pos
+			# print(radiant, current_pos)

scene/little_game/gadget/wheel.tscn

@@ -0,0 +1,8 @@
+[gd_scene load_steps=2 format=3 uid="uid://dry6mhv6x0ppl"]
+
+[ext_resource type="Script" path="res://scene/little_game/gadget/wheel.gd" id="1_halh6"]
+
+[node name="Wheel" type="Control"]
+layout_mode = 3
+anchors_preset = 0
+script = ExtResource("1_halh6")

scene/little_game/八音盒.gd

@@ -2,16 +2,18 @@ extends Control
 
 # answer for the puzzle, by columns
 @export var current_answer := [0, 0, 0, 0, 0, 0, 0, 0, 0]
+# @export var answer := [1, 0, 0, 0, 0, 0, 0, 0, 0]
+@export var answer := [1, 4, 3, 1, 3, 6, 4, 3, 2]
 @export_enum("closed", "opened", "playing", "finished") var mode := "closed"
-
-@export var answer := [1, 0, 0, 0, 0, 0, 0, 0, 0]
-# @export var answer := [1, 4, 3, 1, 3, 6, 4, 3, 2]
+@export var playing_step_degree := 45.0
+@export var playing_steps := 10
 
 @onready var points_polygon = $ButtonPositionPoints as Polygon2D
 @onready var box = $Box as TextureRect
-@onready var side_handle = $SideHandle as AnimatedSprite2D
-@onready var inside_handle = $Handle as TextureButton
+@onready var side_handle = $Box/SideHandle as AnimatedSprite2D
+@onready var inside_handle = $InsideHandle as TextureButton
 @onready var audio_player = $MusicPlayer2D as AudioStreamPlayer2D
+@onready var handle_wheel = $Wheel
 
 var button_texture = preload("res://asset/art/little_game/八音盒/小猫.png")
 var button_highlight_texture = preload("res://asset/art/little_game/八音盒/小猫高亮.png")
@@ -23,14 +25,13 @@ var box_finished_texture = preload("res://asset/art/little_game/八音盒/有按
 var sfx_interact = preload("res://asset/audio/sfx/game/八音盒/八音盒互动.mp3") as AudioStream
 var sfx_drag = preload("res://asset/audio/sfx/game/八音盒/拖动放置.mp3") as AudioStream
 var sfx_open = preload("res://asset/audio/sfx/game/八音盒/八音盒打开.mp3") as AudioStream
+var sfx_assemble = preload("res://asset/audio/sfx/game/八音盒/装上插销.mp3") as AudioStream
 var sfx_close = preload("res://asset/audio/sfx/game/八音盒/关盖子.mp3") as AudioStream
 var sfx_exit = preload("res://asset/audio/sfx/game/八音盒/退出界面.mp3") as AudioStream
 
 var audio_manual = preload("res://asset/audio/sfx/game/八音盒/操纵八音盒.mp3") as AudioStream
 var audio_auto = preload("res://asset/audio/sfx/game/八音盒/自走八音盒.mp3") as AudioStream
 
-var dragging = false
-
 var current_selected_btn := 0:
 	set(value):
 		if has_node("button_root"):
@@ -41,20 +42,24 @@ var current_selected_btn := 0:
 			root.get_node(str(value)).texture = button_highlight_texture
 		current_selected_btn = value
 
+var playing_step_sec := 0.5
+
 
 func _ready() -> void:
+	playing_step_sec = audio_manual.get_length() / playing_steps
 	_chechout_mode()
 	inside_handle.pressed.connect(_on_handle_pressed)
-	# SceneManager.focus_node(self)
-	# CameraFocusMarker.lock_horizontal = false
-	# CameraFocusMarker.limit_top = 0
-	# CameraFocusMarker.limit_bottom = 316
+	handle_wheel.rotated.connect(_on_wheel_rotated)
+
+	# # test close shaking effect
+	# mode = "playing"
+	# _chechout_mode(true)
+	# get_tree().create_timer(1.0).timeout.connect(_on_auto_play_finished)
 
 
 func _chechout_mode(play_sfx := false) -> void:
-	dragging = false
-	$Handle.visible = mode == "opened"
-	$SideHandle.visible = mode == "playing" or mode == "finished"
+	inside_handle.visible = mode == "opened"
+	side_handle.visible = mode == "playing" or mode == "finished"
 	_reset_buttons()
 	match mode:
 		"closed":
@@ -69,7 +74,7 @@ func _chechout_mode(play_sfx := false) -> void:
 				audio_player.play()
 			box.texture = box_opened_texture
 		"playing":
-			audio_player.stream = sfx_drag
+			audio_player.stream = audio_manual
 			box.texture = box_opened_texture
 		"finished":
 			if play_sfx:
@@ -149,19 +154,90 @@ func _unhandled_input(event: InputEvent) -> void:
 		elif event.is_action_pressed("right"):
 			current_selected_btn = clampi(current_selected_btn + 1, 0, 8)
 	if mode == "playing":
-		if event is InputEventMouseButton:
-			if event.button_index == MOUSE_BUTTON_LEFT:
-				if event.pressed:
-					dragging = true
-				else:
-					dragging = false
-		if event is InputEventMouseMotion:
-			if dragging:
-				#TODO
-				inside_handle.position += event.relative
+		pass
 
 
 func _on_handle_pressed() -> void:
-	if mode == "opened":
-		mode = "playing"
-		_chechout_mode(true)
+	inside_handle.disabled = true
+	$AnimationPlayer.play("handle_animation")
+
+
+func _checkout_playing():
+	mode = "playing"
+	box.z_index = 10
+	var tween = create_tween()
+	audio_player.stream = sfx_assemble
+	audio_player.play()
+	tween.tween_property(inside_handle, "modulate:a", 0, 0.2)
+	tween.tween_callback(func(): _chechout_mode(true))
+
+
+var accumulated_radiant := 0.0
+# 8 steps in total, then auto play
+var accumulated_steps := 0
+var playing := false
+var continue_playing := false
+
+
+func _on_wheel_rotated(radiant: float) -> void:
+	if mode != "playing" or accumulated_steps >= playing_steps:
+		return
+	accumulated_radiant += radiant
+	if abs(accumulated_radiant) > deg_to_rad(playing_step_degree):
+		accumulated_radiant = 0
+		if playing:
+			continue_playing = true
+		else:
+			playing = true
+			side_handle.play("default")
+			if accumulated_steps == 0:
+				audio_player.play()
+			else:
+				audio_player.stream_paused = false
+			get_tree().create_timer(playing_step_sec).timeout.connect(_on_playing_step_finished)
+
+
+func _on_playing_step_finished():
+	accumulated_steps += 1
+	if accumulated_steps == playing_steps:
+		# auto play
+		_checkout_auto_play()
+		return
+	if continue_playing:
+		continue_playing = false
+		get_tree().create_timer(playing_step_sec).timeout.connect(_on_playing_step_finished)
+	else:
+		playing = false
+		audio_player.stream_paused = true
+		side_handle.pause()
+
+
+func _checkout_auto_play():
+	audio_player.stop()
+	audio_player.stream = audio_auto
+	audio_player.play()
+	side_handle.play()
+	# var audio_len = audio_auto.get_length()
+	# 音效 9.5 秒时关闭盒子
+	var audio_len = 9.5
+	get_tree().create_timer(audio_len).timeout.connect(_on_auto_play_finished)
+
+
+func _on_auto_play_finished():
+	side_handle.pause()
+	mode = "finished"
+	# 不播放关闭音效，因为自动播放时已经播放过了
+	_chechout_mode(false)
+	# 抖动效果，逐渐减弱
+	var tween = create_tween()
+	var fps := 6.0
+	var duration := 0.5
+	var delta := 4.0
+	var origin_pos = box.position
+	var count = int(duration * fps)
+	var delta_t = 1.0 / fps
+	for i in range(count):
+		var offset = Vector2(randf_range(-delta, delta), randf_range(-delta, delta)) * exp(-i)
+		tween.tween_property(box, "position", origin_pos + offset, delta_t).set_trans(
+			Tween.TRANS_CUBIC
+		)

util/canvas_util.gd

@@ -0,0 +1,11 @@
+class_name CanvasUtil extends Object
+
+
+# 晃动节点
+static func shake_node(node: CanvasItem, tween: Tween, duration: float, delta := 5.0, fps := 4.0) -> void:
+	var origin_pos = node.position
+	var count = int(duration * fps)
+	var delta_t = 1.0 / fps
+	for i in range(count):
+		var offset = Vector2(randf_range(-delta, delta), randf_range(-delta, delta))
+		tween.tween_property(node, "position", origin_pos + offset, delta_t).set_trans(Tween.TRANS_CUBIC)