starmen1265
3c6f31b503
Ultraworked with [Sisyphus](https://github.com/code-yeongyu/oh-my-openagent) Co-authored-by: Sisyphus <clio-agent@sisyphuslabs.ai>
119 lines
3.1 KiB
GDScript
119 lines
3.1 KiB
GDScript
class_name Boss
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extends EnemyBase
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## 关底 Boss：四发重型轰炸机。
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## 进场悬停后左右巡逻；弹幕双模式交替（瞄准连发 / 扇形散布），
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## 半血进入狂暴阶段（弹速、频率、弹幕密度提升）。
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## 死亡时爆炸链 + 震屏 + 清除全场敌弹。
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const TEX := preload("res://assets/svg/boss_plane.svg")
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const CENTER_X := 270.0
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const ENTER_Y := 150.0
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const ENTER_SPEED := 100.0
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const PATROL_AMP := 145.0
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const MUZZLE := Vector2(0.0, 55.0)
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var difficulty := 1.0
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var max_hp := 120
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var _t := 0.0
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var _entered := false
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var _pattern_index := 0
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var _pattern_timer := 1.4
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var _burst_left := 0
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var _burst_tick := 0.0
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func setup(p_difficulty: float) -> void:
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difficulty = p_difficulty
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hp = int(60.0 + 60.0 * difficulty)
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max_hp = hp
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score_value = 5000
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drops_powerup = true
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hit_radius = 62.0
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position = Vector2(CENTER_X, -120.0)
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func _ready() -> void:
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collision_layer = 4
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collision_mask = 0
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var sprite := Sprite2D.new()
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sprite.texture = TEX
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add_child(sprite)
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var shape := CollisionShape2D.new()
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var rect := RectangleShape2D.new()
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rect.size = Vector2(190.0, 84.0)
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shape.shape = rect
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add_child(shape)
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func _process(delta: float) -> void:
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if dead:
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return
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if not _entered:
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position.y += ENTER_SPEED * delta
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if position.y >= ENTER_Y:
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position.y = ENTER_Y
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_entered = true
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return
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_t += delta * (1.25 if _in_phase2() else 1.0)
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position.x = CENTER_X + sin(_t * 0.55) * PATROL_AMP
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position.y = ENTER_Y + sin(_t * 1.6) * 16.0
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if _burst_left > 0:
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_burst_tick -= delta
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if _burst_tick <= 0.0:
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_burst_tick = 0.14
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_burst_left -= 1
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_fire_bullet(_aim_direction() * _bullet_speed(), MUZZLE)
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else:
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_pattern_timer -= delta
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if _pattern_timer <= 0.0:
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_fire_pattern()
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func _in_phase2() -> bool:
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return hp <= max_hp / 2.0
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func _bullet_speed() -> float:
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return (235.0 + 40.0 * difficulty) * (1.12 if _in_phase2() else 1.0)
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func _fire_pattern() -> void:
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var phase2 := _in_phase2()
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if _pattern_index % 2 == 0:
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# 瞄准连发
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_burst_left = 5 if phase2 else 3
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_burst_tick = 0.0
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_pattern_timer = 1.5 if phase2 else 2.0
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else:
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# 扇形散布
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var count := 8 if phase2 else 5
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var spread := 50.0 if phase2 else 36.0
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var speed := _bullet_speed()
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for i in count:
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var angle := deg_to_rad(-spread + spread * 2.0 * float(i) / float(count - 1))
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_fire_bullet(Vector2.DOWN.rotated(angle) * speed, MUZZLE)
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_pattern_timer = 1.7 if phase2 else 2.2
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_pattern_index += 1
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func _die() -> void:
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_spawn_drop(Powerup.Kind.POWER)
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var game := get_tree().get_first_node_in_group("game") as Game
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if game != null and is_instance_valid(game):
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game.add_score(score_value)
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game.add_bomb()
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game.clear_enemy_bullets()
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game.shake(9.0)
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for i in 8:
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var offset := Vector2(randf_range(-92.0, 92.0), randf_range(-56.0, 56.0))
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if game != null and is_instance_valid(game):
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game.spawn_explosion(global_position + offset, randf_range(1.3, 2.0))
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await get_tree().create_timer(0.12).timeout
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if game != null and is_instance_valid(game):
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game.spawn_explosion(global_position, 3.0)
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await get_tree().create_timer(0.3).timeout
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queue_free()
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