feat: 场景与核心玩法脚本（双机型/波次/Boss/道具/炸弹/地面单位/浮游炮激光）
Ultraworked with [Sisyphus](https://github.com/code-yeongyu/oh-my-openagent) Co-authored-by: Sisyphus <clio-agent@sisyphuslabs.ai>
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class_name Player
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extends Area2D
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## 玩家战机：移动钳制、无敌闪烁与受击。
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## Variant.FIGHTER：机枪弹幕（PlayerBullet）。
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## Variant.FUNNEL：机体+浮游炮持续激光；按 focus(I) 浮游炮聚拢合体粗激光。
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signal hit
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enum Variant { FIGHTER, FUNNEL }
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const SPEED := 340.0
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const FIRE_INTERVAL := 0.13
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const INVULN_ON_RESPAWN := 2.5
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const WEAPON_LEVEL_MAX := 4
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const BOMBS_MAX := 5
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const BOMB_INVULN := 1.0
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const TEX := preload("res://assets/art/P-38.png")
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const TEX_FUNNEL := preload("res://assets/svg/plane_funnel.svg")
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const FUNNEL_TEX := preload("res://assets/svg/funnel.svg")
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const PLANE_LASER_DPS := 18.0
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const FUNNEL_LASER_DPS := 7.0
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const FOCUS_MULT := 1.5
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const FOCUS_SPEED_MULT := 0.5
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const PLANE_MUZZLE := Vector2(0.0, -30.0)
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## 侧身帧切换：三帧贴图（平飞/左倾/右倾），机头始终垂直
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const BANK_LERP := 12.0
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const BANK_ENTER := 0.45
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const BANK_EXIT := 0.25
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## 展开阵列（左侧三槽，右侧镜像）：错开的三角编队
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const FUNNEL_SPREAD_LEFT: Array[Vector2] = [
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Vector2(-36.0, -4.0),
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Vector2(-62.0, -22.0),
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Vector2(-40.0, -46.0),
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]
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const FUNNEL_FOCUS_X := 12.0
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var variant: Variant = Variant.FIGHTER
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var weapon_level := 1
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var bombs := 2
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var fire_timer := 0.0
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var invuln := 0.0
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var active := true
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var sprite: Sprite2D
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var _bank := 0.0
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var _bank_state := 0
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var _tex_neutral: Texture2D
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var _tex_bank_left: Texture2D
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var _tex_bank_right: Texture2D
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var _funnels: Array[Node2D] = []
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var _funnel_beams: Array[LaserBeam] = []
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var _plane_beam: LaserBeam
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var _focus_beam: LaserBeam
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func _ready() -> void:
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collision_layer = 1
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collision_mask = 4 | 8 | 16
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sprite = Sprite2D.new()
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if variant == Variant.FUNNEL:
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_tex_neutral = _load_optional_texture("res://assets/art/plane_funnel.png")
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if _tex_neutral == null:
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_tex_neutral = TEX_FUNNEL
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_tex_bank_left = _load_optional_texture("res://assets/art/plane_funnel-bank-left.png")
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_tex_bank_right = _load_optional_texture("res://assets/art/plane_funnel-bank-right.png")
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else:
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_tex_neutral = TEX
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_tex_bank_left = _load_optional_texture("res://assets/art/P-38-bank-left.png")
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_tex_bank_right = _load_optional_texture("res://assets/art/P-38-bank-right.png")
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sprite.texture = _tex_neutral
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add_child(sprite)
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var shape := CollisionShape2D.new()
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var capsule := CapsuleShape2D.new()
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capsule.radius = 13.0
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capsule.height = 44.0
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shape.shape = capsule
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add_child(shape)
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area_entered.connect(_on_area_entered)
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if variant == Variant.FUNNEL:
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_plane_beam = _make_beam(PLANE_LASER_DPS, 5.0, Color(0.6, 0.85, 1.0), PLANE_MUZZLE)
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_focus_beam = _make_beam(0.0, 16.0, Color(0.92, 0.98, 1.0), PLANE_MUZZLE)
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_sync_funnels()
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func _make_beam(p_dps: float, p_width: float, p_color: Color, offset: Vector2) -> LaserBeam:
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var beam := LaserBeam.new()
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beam.dps = p_dps
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beam.width = p_width
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beam.color = p_color
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beam.position = offset
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add_child(beam)
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return beam
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func _process(delta: float) -> void:
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if not active:
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return
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var direction := Input.get_vector("move_left", "move_right", "move_up", "move_down")
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# 聚焦合体期间：威力换机动，移动速度减半（仍可移动）
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var speed := SPEED
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if variant == Variant.FUNNEL and Input.is_action_pressed("fire") and Input.is_action_pressed("focus"):
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speed *= FOCUS_SPEED_MULT
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position += direction * speed * delta
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# 侧身帧：带迟滞的三态切换（左倾/平飞/右倾），纯贴图切换、机头不歪
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var dir_x := clampf(direction.x, -1.0, 1.0)
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_bank = lerpf(_bank, dir_x, minf(BANK_LERP * delta, 1.0))
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if _bank_state == 0:
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if _bank > BANK_ENTER:
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_bank_state = 1
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elif _bank < -BANK_ENTER:
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_bank_state = -1
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elif absf(_bank) < BANK_EXIT:
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_bank_state = 0
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match _bank_state:
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-1:
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if _tex_bank_left != null:
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sprite.texture = _tex_bank_left
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1:
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if _tex_bank_right != null:
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sprite.texture = _tex_bank_right
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_:
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sprite.texture = _tex_neutral
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position.x = clampf(position.x, 22.0, 518.0)
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position.y = clampf(position.y, 90.0, 930.0)
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if variant == Variant.FIGHTER:
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fire_timer -= delta
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if Input.is_action_pressed("fire") and fire_timer <= 0.0:
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fire_timer = FIRE_INTERVAL
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_fire()
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else:
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_update_funnel_weapons(delta)
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if Input.is_action_just_pressed("bomb") and active and bombs > 0:
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use_bomb()
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if invuln > 0.0:
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invuln -= delta
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sprite.modulate.a = 1.0 if fmod(invuln * 8.0, 2.0) < 1.0 else 0.3
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else:
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sprite.modulate.a = 1.0
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## 浮游炮机体武器：常态机体激光 + 各浮游炮激光；按 I 聚焦合体粗激光。
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## 合体总威力 = 散开总威力 × FOCUS_MULT。
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func _update_funnel_weapons(delta: float) -> void:
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var firing := Input.is_action_pressed("fire")
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var focus := firing and Input.is_action_pressed("focus")
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_plane_beam.active = firing and not focus
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_focus_beam.active = focus
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if focus:
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_focus_beam.dps = (PLANE_LASER_DPS + float(_funnels.size()) * FUNNEL_LASER_DPS) * FOCUS_MULT
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for beam in _funnel_beams:
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beam.active = firing and not focus
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for i in _funnels.size():
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var left := i % 2 == 0
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var rank := i / 2
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var target: Vector2
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if focus:
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target = Vector2(-FUNNEL_FOCUS_X if left else FUNNEL_FOCUS_X, -28.0 - 20.0 * float(rank))
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else:
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var slot: Vector2 = FUNNEL_SPREAD_LEFT[rank]
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target = slot if left else Vector2(-slot.x, slot.y)
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var funnel: Node2D = _funnels[i]
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funnel.position = funnel.position.lerp(target, minf(10.0 * delta, 1.0))
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## 按当前火力等级同步浮游炮数量（每侧 level-1 台）
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func _sync_funnels() -> void:
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if variant != Variant.FUNNEL:
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return
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var wanted := (weapon_level - 1) * 2
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while _funnels.size() > wanted:
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var removed: Node2D = _funnels.pop_back()
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_funnel_beams.pop_back()
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removed.queue_free()
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while _funnels.size() < wanted:
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var funnel := Node2D.new()
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var icon := Sprite2D.new()
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icon.texture = FUNNEL_TEX
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funnel.add_child(icon)
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var beam := LaserBeam.new()
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beam.dps = FUNNEL_LASER_DPS
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beam.width = 4.0
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beam.color = Color(0.45, 0.9, 1.0)
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beam.position = Vector2(0.0, -8.0)
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funnel.add_child(beam)
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add_child(funnel)
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funnel.position = Vector2(0.0, 20.0)
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_funnels.append(funnel)
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_funnel_beams.append(beam)
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func _fire() -> void:
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var container := get_tree().get_first_node_in_group("player_bullets")
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if container == null:
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return
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match weapon_level:
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1:
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_spawn_volley(container, [-11.0, 11.0], Vector2.UP)
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2:
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_spawn_volley(container, [-17.0, -6.0, 6.0, 17.0], Vector2.UP)
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3:
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_spawn_volley(container, [-17.0, -6.0, 6.0, 17.0], Vector2.UP)
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_spawn_bullet(container, Vector2(-22.0, -4.0), Vector2.UP.rotated(deg_to_rad(-12.0)))
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_spawn_bullet(container, Vector2(22.0, -4.0), Vector2.UP.rotated(deg_to_rad(12.0)))
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_:
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# L4：6 直射 + 双道 22° 斜射 + 30° 斜射
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_spawn_volley(container, [-25.0, -15.0, -5.0, 5.0, 15.0, 25.0], Vector2.UP)
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_spawn_bullet(container, Vector2(-32.0, -4.0), Vector2.UP.rotated(deg_to_rad(-22.0)))
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_spawn_bullet(container, Vector2(-32.0, 6.0), Vector2.UP.rotated(deg_to_rad(-22.0)))
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_spawn_bullet(container, Vector2(32.0, -4.0), Vector2.UP.rotated(deg_to_rad(22.0)))
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_spawn_bullet(container, Vector2(32.0, 6.0), Vector2.UP.rotated(deg_to_rad(22.0)))
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_spawn_bullet(container, Vector2(-20.0, 10.0), Vector2.UP.rotated(deg_to_rad(-30.0)))
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_spawn_bullet(container, Vector2(20.0, 10.0), Vector2.UP.rotated(deg_to_rad(30.0)))
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func _spawn_volley(container: Node, x_offsets: Array, dir: Vector2) -> void:
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for x in x_offsets:
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_spawn_bullet(container, Vector2(x, -8.0), dir)
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func _spawn_bullet(container: Node, offset: Vector2, dir: Vector2) -> void:
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var bullet := PlayerBullet.new()
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bullet.direction = dir
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container.add_child(bullet)
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bullet.global_position = global_position + offset
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func _collect_powerup(pickup: Powerup) -> void:
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pickup.queue_free()
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match pickup.kind:
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Powerup.Kind.BOMB:
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var game := get_tree().get_first_node_in_group("game") as Game
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bombs = mini(bombs + 1, BOMBS_MAX)
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if game != null:
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game.notify_bomb_pickup()
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_:
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if weapon_level < WEAPON_LEVEL_MAX:
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weapon_level += 1
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_sync_funnels()
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else:
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var game := get_tree().get_first_node_in_group("game") as Game
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if game != null:
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game.add_score(500)
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## 投放炸弹：清屏伤害 + 清除敌弹 + 白闪光效 + 短暂无敌
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func use_bomb() -> void:
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if not active or bombs <= 0:
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return
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bombs -= 1
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invuln = maxf(invuln, BOMB_INVULN)
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var game := get_tree().get_first_node_in_group("game") as Game
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if game != null:
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game.detonate_bomb()
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func _on_area_entered(area: Area2D) -> void:
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if area is Powerup:
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_collect_powerup(area)
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return
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if not active or invuln > 0.0:
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return
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if area is EnemyBullet:
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area.queue_free()
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emit_signal("hit")
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elif area is EnemyBase:
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emit_signal("hit")
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## 被击中后的消隐（禁用碰撞需延迟，避免在物理回调中直接修改）；火力降一级
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func die() -> void:
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active = false
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weapon_level = maxi(1, weapon_level - 1)
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_sync_funnels()
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if _plane_beam != null:
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_plane_beam.active = false
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if _focus_beam != null:
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_focus_beam.active = false
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for beam in _funnel_beams:
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beam.active = false
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visible = false
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set_deferred("monitoring", false)
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## 复活并给予无敌时间
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func respawn(pos: Vector2) -> void:
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position = pos
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active = true
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visible = true
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invuln = INVULN_ON_RESPAWN
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fire_timer = 0.0
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_bank = 0.0
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_bank_state = 0
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sprite.texture = _tex_neutral
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set_deferred("monitoring", true)
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## 可选素材：文件存在才加载（侧身帧未生成时回退平飞帧）
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func _load_optional_texture(path: String) -> Texture2D:
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if not ResourceLoader.exists(path):
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return null
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return load(path) as Texture2D
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