308 lines
9.3 KiB
GDScript
308 lines
9.3 KiB
GDScript
extends Node2D
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var debug_mode: bool = false
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# 添加debug绘制相关变量
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var debug_lines: Array[Line2D] = []
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var debug_font: Font
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# 导出变量便于在编辑器中配置
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@export var start_point: Vector2
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@export var end_point: Vector2
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@export var part_distance: float = 12.0
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@export var rope_part_scene: PackedScene
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@export var max_deform: float = 30.0 # 最大形变距离
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@export var deform_spread: float = 3.0 # 形变扩散范围
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@export var initial_sag: float = 8.0 # 初始下垂量
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# Line2D相关导出变量
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@export var rope_texture: Texture2D # 绳索纹理
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@export var rope_width: float = 8 # 绳索宽度
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@export var rope_color: Color = Color.WHITE # 绳索颜色
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@export var rope_texture_tile_factor: float = 1.0 # 纹理平铺系数
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var rope_parts: Array[RigidBody2D] = []
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var rest_positions: Array[Vector2] = [] # 存储原始位置
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var active_deforms: Dictionary = {} # 存储当前变形 {rope_part: deform_amount}
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var _exit_tween: Tween
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var _is_exiting := false
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@onready var rope_line: Line2D = $rope_line
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func _ready() -> void:
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if rope_part_scene == null:
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push_error("Rope part scene is not set!")
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return
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# 初始化Line2D
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setup_rope_line()
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$rope_start.position = start_point
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$rope_end.position = end_point
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# 初始化debug字体
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if debug_mode:
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debug_font = ThemeDB.fallback_font
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print("[Rope] Initialized with start_point: ", start_point, " end_point: ", end_point)
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generate_rope_parts()
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# 保存生成后的位置作为静止位置
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rest_positions.clear()
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for part in rope_parts:
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rest_positions.append(part.position)
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func setup_rope_line() -> void:
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rope_line.width = rope_width
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rope_line.default_color = rope_color
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if rope_texture:
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rope_line.texture = rope_texture
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rope_line.texture_mode = Line2D.LINE_TEXTURE_TILE
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rope_line.texture_repeat = CanvasItem.TEXTURE_REPEAT_ENABLED
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rope_line.joint_mode = Line2D.LINE_JOINT_ROUND
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rope_line.begin_cap_mode = Line2D.LINE_CAP_ROUND
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rope_line.end_cap_mode = Line2D.LINE_CAP_ROUND
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rope_line.antialiased = true
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func _process(_delta: float) -> void:
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update_rope_line()
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func update_rope_line() -> void:
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rope_line.clear_points()
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for part in rope_parts:
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rope_line.add_point(part.position)
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func generate_rope_parts() -> void:
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# 清理debug线
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if debug_mode:
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for line in debug_lines:
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line.queue_free()
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debug_lines.clear()
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print("[Rope] Generating rope parts...")
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# 清理可能存在的旧rope parts
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for child in $rope_parts.get_children():
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child.queue_free()
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rope_parts.clear()
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rest_positions.clear()
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# 计算绳索总长度和需要的部件数量
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var total_distance: float = start_point.distance_to(end_point)
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var parts_count: int = int(total_distance / part_distance)
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# 确保至少有一个部件
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if parts_count < 1:
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parts_count = 1
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if debug_mode:
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print("[Rope] Total distance: ", total_distance)
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print("[Rope] Parts count: ", parts_count)
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# 计算实际的部件间距，确保均匀分布
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var _actual_distance: float = total_distance / parts_count
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# 首先创建所有部件并存储到临时数组
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var temp_parts: Array[Dictionary] = []
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# 生成每个rope_part
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for i in range(parts_count + 1):
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var t = float(i) / float(parts_count) # 插值因子
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var part_position = start_point.lerp(end_point, t)
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# 计算下垂量：使用抛物线函数 y = 4h(x-x²)
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var sag = initial_sag * 4.0 * t * (1.0 - t)
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part_position.y += sag
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var part = rope_part_scene.instantiate() as RigidBody2D
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$rope_parts.add_child(part)
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part.position = part_position
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# 配置第一个和最后一个点
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if i == 0 or i == parts_count:
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part.freeze = true # 固定两端点
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# 将部件及其位置信息存储到临时数组
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temp_parts.append({
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"part": part,
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"position": part_position
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})
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if debug_mode:
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print("[Rope] Created part at position: ", part_position)
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# 仅按x坐标排序
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temp_parts.sort_custom(func(a, b): return a["position"].x < b["position"].x)
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# 清空并重新填充rope_parts和original_positions数组，确保顺序正确
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rope_parts.clear()
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rest_positions.clear()
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# 创建物理关节连接相邻的部件
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for i in range(temp_parts.size()):
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var part = temp_parts[i]["part"]
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var pos = temp_parts[i]["position"]
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rope_parts.append(part)
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rest_positions.append(pos)
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# 创建与前一个部件的关节连接（除了第一个部件）
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if i > 0:
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var pin_joint = PinJoint2D.new()
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pin_joint.set_node_a(rope_parts[i-1].get_path())
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pin_joint.set_node_b(part.get_path())
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pin_joint.softness = 1.0 # 可以调整这个值来改变绳索的柔软度
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$rope_parts.add_child(pin_joint)
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# 设置关节的位置（在两个部件之间）
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var joint_pos = (rope_parts[i-1].position + part.position) / 2
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pin_joint.position = joint_pos
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if debug_mode:
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print("[Rope] Parts sorted and connected. Total parts: ", rope_parts.size())
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for i in range(rope_parts.size()):
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print("[Rope] Part ", i, ": ", rope_parts[i])
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print("[Rope] Part ", i, " position: ", rope_parts[i].position)
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# 初始更新Line2D
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update_rope_line()
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func handle_player_rope_contact(collider: RigidBody2D) -> void:
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var contact_index = -1
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for i in range(rope_parts.size()):
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if rope_parts[i] == collider:
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contact_index = i
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break
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if contact_index == -1:
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return
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# 如果碰到第一个或最后一个部件，直接返回
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if contact_index == 0 or contact_index == rope_parts.size() - 1:
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return
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var max_offset = 10.0 # 最大下移距离
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var tween = create_tween()
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# 同时应用所有部件的移动
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for i in range(rope_parts.size()):
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# 跳过第一个和最后一个部件
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if i == 0 or i == rope_parts.size() - 1:
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continue
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var part = rope_parts[i]
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var target_pos = rest_positions[i]
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# 如果接触点是第二个或倒数第二个部件，最大偏移量减半
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var current_max_offset = max_offset
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if contact_index == 1 or contact_index == rope_parts.size() - 2:
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current_max_offset = max_offset * 0.5
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# 计算移动距离
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var move_amount: float
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if i <= contact_index:
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# 左侧部分，从接触点到起点，线性减少
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move_amount = float(i) / float(contact_index) if contact_index > 0 else 0.0
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else:
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# 右侧部分，从接触点到终点，线性减少
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var remaining_parts = rope_parts.size() - 1 - contact_index
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move_amount = float(remaining_parts - (i - contact_index)) / float(remaining_parts) if remaining_parts > 0 else 0.0
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# 计算目标位置
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var target_offset = Vector2(0, current_max_offset * move_amount)
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# 将所有移动添加到同一个tween中，parallel=true使它们同时开始
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tween.parallel().tween_property(part, "position",
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target_pos + target_offset, 0.3
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).set_trans(Tween.TRANS_QUAD).set_ease(Tween.EASE_OUT)
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func handle_player_rope_exit() -> void:
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# 如果正在执行退出动画，直接返回
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if _is_exiting:
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return
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_is_exiting = true
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# 如果已经有正在进行的退出动画，先停止它
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if _exit_tween and _exit_tween.is_valid():
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_exit_tween.kill()
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const DOWN_OFFSET_FACTOR := 1.3
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const UP_OFFSET_FACTOR := 0.5
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const DOWN_TIME := 0.15
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const UP_TIME := 0.2
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const RECOVER_TIME := 0.1
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# 找到最大偏移点
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var max_offset_index := 0
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var max_offset := 0.0
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for i in range(rope_parts.size()):
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var current_offset = abs(rope_parts[i].position.y - rest_positions[i].y)
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if current_offset > max_offset:
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max_offset = current_offset
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max_offset_index = i
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_exit_tween = create_tween()
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var tween = _exit_tween
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# 第一阶段：下沉
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for i in range(rope_parts.size()):
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if i == 0 or i == rope_parts.size() - 1:
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continue
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var part = rope_parts[i]
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var rest_pos = rest_positions[i]
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var move_amount: float
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if i <= max_offset_index:
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move_amount = float(i) / float(max_offset_index) if max_offset_index > 0 else 0.0
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else:
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var remaining_parts = rope_parts.size() - 1 - max_offset_index
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move_amount = float(remaining_parts - (i - max_offset_index)) / float(remaining_parts) if remaining_parts > 0 else 0.0
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var down_offset = Vector2(0, max_offset * DOWN_OFFSET_FACTOR * move_amount)
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tween.parallel().tween_property(part, "position",
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rest_pos + down_offset, DOWN_TIME
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).set_trans(Tween.TRANS_CUBIC).set_ease(Tween.EASE_IN)
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# 第二阶段：反弹
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tween.chain().tween_callback(func(): pass)
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for i in range(rope_parts.size()):
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if i == 0 or i == rope_parts.size() - 1:
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continue
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var part = rope_parts[i]
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var rest_pos = rest_positions[i]
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var move_amount: float
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if i <= max_offset_index:
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move_amount = float(i) / float(max_offset_index) if max_offset_index > 0 else 0.0
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else:
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var remaining_parts = rope_parts.size() - 1 - max_offset_index
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move_amount = float(remaining_parts - (i - max_offset_index)) / float(remaining_parts) if remaining_parts > 0 else 0.0
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var up_offset = Vector2(0, -max_offset * UP_OFFSET_FACTOR * move_amount)
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tween.parallel().tween_property(part, "position",
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rest_pos + up_offset, UP_TIME
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).set_trans(Tween.TRANS_CUBIC).set_ease(Tween.EASE_OUT)
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# 第三阶段：恢复到静止位置
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tween.chain().tween_callback(func(): pass)
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for i in range(rope_parts.size()):
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if i == 0 or i == rope_parts.size() - 1:
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continue
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var part = rope_parts[i]
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tween.parallel().tween_property(part, "position",
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rest_positions[i], RECOVER_TIME
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).set_trans(Tween.TRANS_QUAD).set_ease(Tween.EASE_IN_OUT)
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# 添加完成回调，重置标志位
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tween.chain().tween_callback(func():
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_is_exiting = false # 动画完成后重置标志位
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)
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