284 lines
9.8 KiB
GDScript
284 lines
9.8 KiB
GDScript
extends Node2D
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@export var min_rays := 5
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@export var max_rays := 12
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@export var min_length := 60.0
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@export var max_length := 160.0
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var spread_angle := randf_range(20,30)
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var _last_sprite_index: int = -1 # 记录上一次使用的精灵索引
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var blood_part_2_enabled = false
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#func _ready() -> void:
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#create_part1_blood(Vector2(1,0))
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func _physics_process(_delta: float) -> void:
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if blood_part_2_enabled and randf() > 0.5:
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var pos = global_position
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var dir = get_parent().velocity.normalized()
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spawn_blood_part_2(pos,dir)
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#region 初始涂墙
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func create_part1_blood(direction):
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var current_rays = generate_rays(direction)
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for each_ray in current_rays:
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create_two_segment_sprite_line(each_ray["start"], each_ray["middle_point"], each_ray["end"], randi_range(10,30),randi_range(1,3))
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func generate_rays(direction: Vector2) -> Array:
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var current_rays: Array = []
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direction = direction.normalized()
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var ray_count = randi_range(min_rays, max_rays)
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# 1. 计算角度范围
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var base_angle = direction.angle()
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var max_deviation = deg_to_rad(spread_angle)
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var section_size = (max_deviation * 2) / (ray_count + 1)
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var start_angle = base_angle - max_deviation
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# 2. 创建所有射线
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var raycasts: Array[RayCast2D] = []
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for i in ray_count:
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var section_start = start_angle + section_size * i
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var section_end = section_start + section_size
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var final_angle = randf_range(section_start, section_end)
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var raycast = RayCast2D.new()
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add_child(raycast)
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raycasts.append(raycast)
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raycast.position = Vector2.ZERO
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var ray_direction = Vector2(cos(final_angle), sin(final_angle))
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var ray_length = randf_range(min_length, max_length)
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raycast.target_position = ray_direction * ray_length
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raycast.collision_mask = 0
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for layer in [20,22,23,24,25]:
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raycast.set_collision_mask_value(layer, true)
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raycast.enabled = true
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raycast.force_raycast_update()
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# 3. 处理射线结果
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for i in ray_count:
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var raycast = raycasts[i]
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var ray_direction = raycast.target_position.normalized()
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var intended_length = raycast.target_position.length()
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# 生成60%-80%之间的随机比例
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var middle_ratio = randf_range(0.5, 0.8)
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if raycast.is_colliding():
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var global_collision_point = raycast.get_collision_point()
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var distance_to_collision = global_position.distance_to(global_collision_point)
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if distance_to_collision <= intended_length:
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# 计算中间点（在实际碰撞点之前）
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var middle_point = global_position.lerp(global_collision_point, middle_ratio)
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current_rays.append({
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"start": global_position,
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"end": global_collision_point,
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"middle_point": middle_point,
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"collision": true,
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"out_of_range_collision": false,
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"intended_length": intended_length
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})
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else:
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var global_clamped_end = global_position + (ray_direction * intended_length)
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var middle_point = global_position.lerp(global_clamped_end, middle_ratio)
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current_rays.append({
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"start": global_position,
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"end": global_clamped_end,
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"middle_point": middle_point,
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"collision": false,
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"out_of_range_collision": true,
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"intended_length": intended_length
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})
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else:
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var global_intended_end = global_position + (ray_direction * intended_length)
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var middle_point = global_position.lerp(global_intended_end, middle_ratio)
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current_rays.append({
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"start": global_position,
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"end": global_intended_end,
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"middle_point": middle_point,
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"collision": false,
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"out_of_range_collision": false,
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"intended_length": intended_length
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})
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raycast.queue_free()
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return current_rays
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# 主函数：生成三点两段的精灵线
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func create_two_segment_sprite_line(
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start_pos: Vector2,
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middle_pos: Vector2,
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end_pos: Vector2,
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first_segment_count: int,
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second_segment_count: int,
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) -> void:
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var sprite_scene_group_1: Array[PackedScene] = [
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preload("res://Char/Char_Components/Blood/Art/blood_stain_1_01.tscn"),
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preload("res://Char/Char_Components/Blood/Art/blood_stain_1_02.tscn"),
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preload("res://Char/Char_Components/Blood/Art/blood_stain_1_03.tscn"),
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preload("res://Char/Char_Components/Blood/Art/blood_stain_1_04.tscn"),
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preload("res://Char/Char_Components/Blood/Art/blood_stain_1_05.tscn"),
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preload("res://Char/Char_Components/Blood/Art/blood_stain_1_06.tscn"),
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preload("res://Char/Char_Components/Blood/Art/blood_stain_1_07.tscn")
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]
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var sprite_scene_group_2: Array[PackedScene] = [
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preload("res://Char/Char_Components/Blood/Art/blood_stain_2_01.tscn"),
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preload("res://Char/Char_Components/Blood/Art/blood_stain_2_02.tscn"),
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preload("res://Char/Char_Components/Blood/Art/blood_stain_2_03.tscn"),
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preload("res://Char/Char_Components/Blood/Art/blood_stain_2_04.tscn"),
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preload("res://Char/Char_Components/Blood/Art/blood_stain_2_05.tscn"),
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preload("res://Char/Char_Components/Blood/Art/blood_stain_2_06.tscn"),
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preload("res://Char/Char_Components/Blood/Art/blood_stain_2_07.tscn"),
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preload("res://Char/Char_Components/Blood/Art/blood_stain_2_08.tscn"),
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preload("res://Char/Char_Components/Blood/Art/blood_stain_2_09.tscn"),
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preload("res://Char/Char_Components/Blood/Art/blood_stain_2_10.tscn"),
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preload("res://Char/Char_Components/Blood/Art/blood_stain_2_12.tscn"),
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preload("res://Char/Char_Components/Blood/Art/blood_stain_2_11.tscn")
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]
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_last_sprite_index = -1 # 重置上一次的索引
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# 生成两段
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create_sprite_line_segment(start_pos, middle_pos, first_segment_count, 1.1, 1.0, sprite_scene_group_1)
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_last_sprite_index = -1 # 两段之间重置，让两段独立
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create_sprite_line_segment(middle_pos, end_pos, second_segment_count, 0.8, 0.6, sprite_scene_group_2)
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# 生成单段精灵线
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func create_sprite_line_segment(
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start_pos: Vector2,
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end_pos: Vector2,
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sprite_count: int,
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start_scale: float,
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end_scale: float,
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_sprite_scene_group: Array[PackedScene]
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) -> void:
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var parent = get_tree().get_first_node_in_group("Effect_Group")
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if not parent:
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push_warning("未找到Effect_Group组的节点！")
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return
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sprite_count = maxi(1, sprite_count)
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var direction = end_pos - start_pos
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for i in range(sprite_count):
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var progress = float(i) / (sprite_count - 1) if sprite_count > 1 else 0.0
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var _current_pos = start_pos.lerp(end_pos, progress)
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var _scale_value = lerp(start_scale, end_scale, progress)
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var _rotation = direction.angle()
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# 随机选择一个场景（避免重复）
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#var selected_scene = _get_random_sprite_scene(sprite_scene_group)
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#_create_single_sprite(current_pos, _rotation, scale_value, parent, selected_scene)
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var blood_impulse_percent = randf()
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if blood_impulse_percent > 0.9:
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spawn_blood_part_1(start_pos,end_pos)
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blood_part_2_enabled = true
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# 随机选择场景（避免与上次重复）
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func _get_random_sprite_scene(sprite_scene_group: Array[PackedScene]) -> PackedScene:
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var group_size = sprite_scene_group.size()
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if group_size == 1:
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return sprite_scene_group[0]
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# 生成可用索引列表（排除上次使用的索引）
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var available_indices: Array[int] = []
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for i in range(group_size):
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if i != _last_sprite_index:
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available_indices.append(i)
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# 随机选择一个新索引
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var random_index = available_indices[randi() % available_indices.size()]
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_last_sprite_index = random_index # 更新上次使用的索引
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return sprite_scene_group[random_index]
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# 创建单个精灵
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func _create_single_sprite(pos: Vector2, _rotation: float, scale_value: float, parent: Node, sprite_scene: PackedScene) -> void:
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var sprite = sprite_scene.instantiate() as Sprite2D
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if not sprite:
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push_warning("场景实例化失败！")
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return
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sprite.position = pos
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sprite.rotation = _rotation
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sprite.scale = Vector2(scale_value, scale_value)
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sprite.self_modulate = Color.from_string("959595ca", Color.WHITE)
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parent.add_child(sprite)
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#region End
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func spawn_blood_part_1(start_pos: Vector2, end_pos: Vector2) -> void:
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var effect_scene = preload("res://Char/Char_Components/Blood/blood_part.tscn")
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# 计算方向向量（标准化）
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var dir = (end_pos - start_pos).normalized()
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# 随机选择生成位置
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var spawn_pos = start_pos if randi() % 2 == 0 else end_pos
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# 实例化场景
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var effect_instance = effect_scene.instantiate()
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# 设置位置和旋转
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effect_instance.global_position = spawn_pos
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effect_instance.rotation = dir.angle()
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effect_instance.can_stain = true
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effect_instance.z_index = 2
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# 设置速度 (假设effect_instance继承自CharacterBody2D)
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effect_instance.velocity = dir * randf_range(100,200)
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# 添加到效果组的第一个节点下
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var effect_parent = get_tree().get_first_node_in_group("Effect_Group")
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if effect_parent:
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effect_parent.add_child(effect_instance)
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func spawn_blood_part_2(pos: Vector2, dir: Vector2) -> void:
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var PROJECTILE_SPEED = 80.0
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var scene = preload("res://Char/Char_Components/Blood/blood_part.tscn")
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# 确保方向向量有效
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if dir.length_squared() == 0:
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dir = Vector2(0,1)
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# 获取特定组的父节点
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var parent = get_tree().get_first_node_in_group("Effect_Group")
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if not parent:
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push_error("Cannot find Effect_Group node")
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return
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# 标准化方向向量
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var normalized_dir = dir.normalized()
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# 实例化场景
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var instance = scene.instantiate() as CharacterBody2D
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if not instance:
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push_error("Failed to instantiate scene or invalid type")
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return
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# 添加到场景树
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parent.add_child(instance)
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# 计算基础角度和随机偏移
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var base_angle = (-normalized_dir).angle()
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var random_offset = deg_to_rad(randf_range(-3.0, 3.0)) # 转换度数为弧度
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var final_angle = base_angle + random_offset
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# 设置位置和朝向
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instance.global_position = pos
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instance.rotation = final_angle
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instance.scale.y *= 1 if randf() < 0.5 else -1 #血液喷出动画左右镜像
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instance.can_stain = true
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instance.z_index = 2
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# 根据最终角度计算速度方向
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var final_dir = Vector2.from_angle(final_angle + PI) # 加PI是因为我们要反方向
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# 设置初始速度
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instance.velocity = final_dir * PROJECTILE_SPEED
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