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 Game
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extends Node2D
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## 游戏总装：世界构建、HUD、生命与游戏结束流程。
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## 场景树全部由代码构建，入口场景只挂本脚本。
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enum State { PLAYING, GAME_OVER }
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const VIEW_SIZE := Vector2(540.0, 960.0)
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const START_LIVES := 3
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const BOMB_ICON := preload("res://assets/svg/bomb_icon.svg")
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const BOSS_BAR_WIDTH := 260.0
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const BOMB_DAMAGE := 30
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var score := 0
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var lives := START_LIVES
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var state := State.PLAYING
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var player: Player
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var _hud_score: Label
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var _lives_box: Node2D
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var _overlay: CanvasLayer
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var _final_score_label: Label
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var _over_since_msec := 0
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var _effects: Node2D
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var _enemy_bullets: Node2D
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var _enemies: Node2D
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var _boss: Boss
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var _boss_bar_bg: ColorRect
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var _boss_bar_fill: ColorRect
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var _warning: Label
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var _shake_amp := 0.0
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var _bombs_box: Node2D
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var _flash_rect: ColorRect
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var _flash_tween: Tween
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func _ready() -> void:
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add_to_group("game")
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randomize()
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_build_world()
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_build_hud()
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_build_overlay()
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_update_lives()
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_update_score_label()
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func _process(delta: float) -> void:
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if state == State.GAME_OVER:
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var accept := Input.is_action_just_pressed("ui_accept") or Input.is_action_just_pressed("fire")
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if accept and Time.get_ticks_msec() - _over_since_msec > 800:
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get_tree().change_scene_to_file("res://scenes/title.tscn")
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return
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_update_boss_bar()
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_update_shake(delta)
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func _update_boss_bar() -> void:
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# 注意：已释放实例 == null 也为真，判存活必须用 is_instance_valid
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if not is_instance_valid(_boss):
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if _boss_bar_bg.visible:
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_boss_bar_bg.visible = false
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_boss_bar_fill.visible = false
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return
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var ratio := clampf(float(_boss.hp) / float(_boss.max_hp), 0.0, 1.0)
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_boss_bar_fill.size.x = BOSS_BAR_WIDTH * ratio
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func _update_shake(delta: float) -> void:
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if _shake_amp > 0.2:
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_shake_amp = lerpf(_shake_amp, 0.0, 8.0 * delta)
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position = Vector2(randf_range(-1.0, 1.0), randf_range(-1.0, 1.0)) * _shake_amp
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elif _shake_amp != 0.0:
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_shake_amp = 0.0
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position = Vector2.ZERO
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func _build_world() -> void:
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add_child(OceanScroll.new())
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var player_bullets := Node2D.new()
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player_bullets.name = "PlayerBullets"
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player_bullets.add_to_group("player_bullets")
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add_child(player_bullets)
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_enemy_bullets = Node2D.new()
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_enemy_bullets.name = "EnemyBullets"
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_enemy_bullets.add_to_group("enemy_bullets")
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add_child(_enemy_bullets)
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_enemies = Node2D.new()
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_enemies.name = "Enemies"
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_enemies.add_to_group("enemies")
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add_child(_enemies)
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var powerups := Node2D.new()
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powerups.name = "Powerups"
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powerups.add_to_group("powerups")
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add_child(powerups)
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player = Player.new()
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player.variant = GameSession.plane_variant as Player.Variant
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player.position = VIEW_SIZE * Vector2(0.5, 0.82)
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player.hit.connect(_on_player_hit)
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add_child(player)
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_effects = Node2D.new()
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_effects.name = "Effects"
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add_child(_effects)
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add_child(WaveSpawner.new())
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func _build_hud() -> void:
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var layer := CanvasLayer.new()
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layer.layer = 10
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add_child(layer)
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_hud_score = Label.new()
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_hud_score.position = Vector2(16.0, 10.0)
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_hud_score.add_theme_font_size_override("font_size", 26)
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_hud_score.add_theme_color_override("font_color", Color.WHITE)
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_hud_score.add_theme_color_override("font_shadow_color", Color(0.0, 0.0, 0.0, 0.6))
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_hud_score.add_theme_constant_override("shadow_offset_x", 2)
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_hud_score.add_theme_constant_override("shadow_offset_y", 2)
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layer.add_child(_hud_score)
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_lives_box = Node2D.new()
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_lives_box.position = Vector2(520.0, 38.0)
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layer.add_child(_lives_box)
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# 炸弹计数（生命图标下方）
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_bombs_box = Node2D.new()
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_bombs_box.position = Vector2(520.0, 72.0)
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layer.add_child(_bombs_box)
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_update_bombs()
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# 炸弹白闪层（最顶层）
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var flash_layer := CanvasLayer.new()
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flash_layer.layer = 30
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add_child(flash_layer)
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_flash_rect = ColorRect.new()
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_flash_rect.color = Color.WHITE
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_flash_rect.set_anchors_preset(Control.PRESET_FULL_RECT)
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_flash_rect.modulate.a = 0.0
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flash_layer.add_child(_flash_rect)
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# Boss 血条（顶栏中央）
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_boss_bar_bg = ColorRect.new()
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_boss_bar_bg.position = Vector2(140.0, 54.0)
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_boss_bar_bg.size = Vector2(BOSS_BAR_WIDTH + 4.0, 14.0)
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_boss_bar_bg.color = Color(0.0, 0.0, 0.0, 0.65)
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_boss_bar_bg.visible = false
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layer.add_child(_boss_bar_bg)
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_boss_bar_fill = ColorRect.new()
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_boss_bar_fill.position = Vector2(142.0, 56.0)
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_boss_bar_fill.size = Vector2(BOSS_BAR_WIDTH, 10.0)
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_boss_bar_fill.color = Color(0.85, 0.2, 0.15)
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_boss_bar_fill.visible = false
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layer.add_child(_boss_bar_fill)
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# Boss 登场警告横幅
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_warning = Label.new()
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_warning.text = "WARNING!!"
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_warning.position = Vector2(0.0, 330.0)
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_warning.size = Vector2(540.0, 70.0)
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_warning.horizontal_alignment = HORIZONTAL_ALIGNMENT_CENTER
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_warning.add_theme_font_size_override("font_size", 56)
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_warning.add_theme_color_override("font_color", Color(1.0, 0.25, 0.2))
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_warning.add_theme_color_override("font_shadow_color", Color(0.0, 0.0, 0.0, 0.7))
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_warning.add_theme_constant_override("shadow_offset_x", 3)
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_warning.add_theme_constant_override("shadow_offset_y", 3)
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_warning.visible = false
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layer.add_child(_warning)
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func _build_overlay() -> void:
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_overlay = CanvasLayer.new()
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_overlay.layer = 20
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var dim := ColorRect.new()
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dim.color = Color(0.0, 0.0, 0.0, 0.55)
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dim.set_anchors_preset(Control.PRESET_FULL_RECT)
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_overlay.add_child(dim)
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var center := CenterContainer.new()
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center.set_anchors_preset(Control.PRESET_FULL_RECT)
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_overlay.add_child(center)
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var vbox := VBoxContainer.new()
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vbox.add_theme_constant_override("separation", 18)
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vbox.alignment = BoxContainer.ALIGNMENT_CENTER
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center.add_child(vbox)
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var title := Label.new()
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title.text = "GAME OVER"
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title.add_theme_font_size_override("font_size", 52)
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title.horizontal_alignment = HORIZONTAL_ALIGNMENT_CENTER
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vbox.add_child(title)
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_final_score_label = Label.new()
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_final_score_label.add_theme_font_size_override("font_size", 30)
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_final_score_label.horizontal_alignment = HORIZONTAL_ALIGNMENT_CENTER
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vbox.add_child(_final_score_label)
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var hint := Label.new()
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hint.text = "回车 / 空格 重新开始"
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hint.add_theme_font_size_override("font_size", 22)
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hint.modulate = Color(0.8, 0.8, 0.8)
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hint.horizontal_alignment = HORIZONTAL_ALIGNMENT_CENTER
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vbox.add_child(hint)
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_overlay.visible = false
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add_child(_overlay)
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func add_score(value: int) -> void:
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score += value
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_update_score_label()
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func spawn_explosion(pos: Vector2, explosion_scale: float = 1.0) -> void:
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var explosion := Explosion.new()
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explosion.size = explosion_scale
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_effects.add_child(explosion)
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explosion.global_position = pos
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## 生成关底 Boss 并显示血条
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func spawn_boss(p_difficulty: float) -> Boss:
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var boss := Boss.new()
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boss.setup(p_difficulty)
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_enemies.add_child(boss)
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_boss = boss
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_boss_bar_bg.visible = true
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_boss_bar_fill.visible = true
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return boss
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## Boss 登场前红色闪烁警告
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func show_boss_warning() -> void:
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_warning.visible = true
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var tween := create_tween().set_loops(4)
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tween.tween_property(_warning, "modulate:a", 0.1, 0.22)
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tween.tween_property(_warning, "modulate:a", 1.0, 0.22)
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tween.finished.connect(func() -> void: _warning.visible = false)
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## 屏幕震动（强度衰减）
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func shake(amp: float) -> void:
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_shake_amp = maxf(_shake_amp, amp)
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## 清除全场敌方弹幕
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func clear_enemy_bullets() -> void:
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for bullet in _enemy_bullets.get_children():
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bullet.queue_free()
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## 炸弹引爆：白闪 + 清弹 + 全场伤害 + 震屏（伤害数值由调用方计数）
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func detonate_bomb() -> void:
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_update_bombs()
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if _flash_tween != null and _flash_tween.is_valid():
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_flash_tween.kill()
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_flash_rect.modulate.a = 0.85
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_flash_tween = create_tween()
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_flash_tween.tween_property(_flash_rect, "modulate:a", 0.0, 0.45) \
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.set_trans(Tween.TRANS_QUAD).set_ease(Tween.EASE_OUT)
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clear_enemy_bullets()
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for enemy in _enemies.get_children():
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if enemy is EnemyBase:
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(enemy as EnemyBase).apply_damage(BOMB_DAMAGE)
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shake(7.0)
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## 炸弹 +1（上限 Player.BOMBS_MAX）
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func add_bomb() -> void:
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if player != null and is_instance_valid(player):
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player.bombs = mini(player.bombs + 1, Player.BOMBS_MAX)
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_update_bombs()
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## 拾取 B 道具：+1 炸弹并刷新 HUD
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func notify_bomb_pickup() -> void:
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_update_bombs()
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func _update_bombs() -> void:
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if _bombs_box == null:
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return
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for icon in _bombs_box.get_children():
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icon.queue_free()
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var count := player.bombs if player != null else 0
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for i in count:
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var icon := Sprite2D.new()
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icon.texture = BOMB_ICON
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icon.scale = Vector2.ONE * 0.8
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icon.position = Vector2(-22.0 * i, 0.0)
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_bombs_box.add_child(icon)
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func _on_player_hit() -> void:
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if state != State.PLAYING or not player.active:
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return
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lives -= 1
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_update_lives()
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spawn_explosion(player.global_position, 1.6)
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clear_enemy_bullets()
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player.die()
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if lives <= 0:
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state = State.GAME_OVER
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_show_game_over()
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else:
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await get_tree().create_timer(0.9).timeout
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if state == State.PLAYING:
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player.respawn(VIEW_SIZE * Vector2(0.5, 0.82))
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func _show_game_over() -> void:
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_final_score_label.text = "得分 " + str(score).pad_zeros(6)
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_overlay.visible = true
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_over_since_msec = Time.get_ticks_msec()
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func _update_score_label() -> void:
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_hud_score.text = "SCORE " + str(score).pad_zeros(6)
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func _update_lives() -> void:
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for icon in _lives_box.get_children():
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icon.queue_free()
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for i in maxi(lives - 1, 0):
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var icon := Sprite2D.new()
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icon.texture = Player.TEX
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icon.scale = Vector2.ONE * 0.42
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icon.position = Vector2(-36.0 * i, 0.0)
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_lives_box.add_child(icon)
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Block a user