starmen1265
3c6f31b503
Ultraworked with [Sisyphus](https://github.com/code-yeongyu/oh-my-openagent) Co-authored-by: Sisyphus <clio-agent@sisyphuslabs.ai>
74 lines
2.0 KiB
GDScript
74 lines
2.0 KiB
GDScript
class_name EnemyBase
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extends Area2D
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## 敌机基类：血量、受击闪白、死亡结算与爆炸。
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var hp := 1
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var score_value := 100
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var dead := false
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var drops_powerup := false
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## 激光命中判定的近似半径（水平覆盖 + 垂直截断）
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var hit_radius := 16.0
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func apply_damage(dmg: int) -> void:
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if dead:
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return
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hp -= dmg
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if hp <= 0:
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dead = true
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_die()
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else:
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_flash()
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func _die() -> void:
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_spawn_drop()
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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(score_value)
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game.spawn_explosion(global_position, 1.0)
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queue_free()
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## 死亡时按标记掉落道具（可能在物理信号回调中调用，需延迟入树）。
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## forced 为 -1 时随机 P/B（各 50%）。
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func _spawn_drop(forced := -1) -> void:
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if not drops_powerup:
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return
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var container := get_tree().get_first_node_in_group("powerups")
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if container == null:
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return
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var pickup := Powerup.new()
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pickup.position = global_position
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if forced >= 0:
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pickup.kind = forced
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else:
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pickup.kind = Powerup.Kind.BOMB if randf() < 0.5 else Powerup.Kind.POWER
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container.call_deferred("add_child", pickup)
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func _flash() -> void:
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modulate = Color(3.0, 3.0, 3.0)
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create_tween().tween_property(self, "modulate", Color.WHITE, 0.12)
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## 朝玩家方向的单位向量；玩家不存在或不活跃时朝正下方
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func _aim_direction() -> Vector2:
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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.player) and game.player.active:
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var to_player: Vector2 = game.player.global_position - global_position
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if to_player.length() > 1.0:
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return to_player.normalized()
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return Vector2.DOWN
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## 向敌方弹幕容器发射一发子弹
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func _fire_bullet(velocity: Vector2, muzzle_offset := Vector2(0.0, 14.0)) -> void:
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var container := get_tree().get_first_node_in_group("enemy_bullets")
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if container == null:
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return
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var bullet := EnemyBullet.new()
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bullet.velocity = velocity
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container.add_child(bullet)
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bullet.global_position = global_position + muzzle_offset
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