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>
2026-08-31 00:31:29 +08:00
parent 024447fbda
commit 3c6f31b503
36 changed files with 1692 additions and 0 deletions
@@ -0,0 +1,53 @@
+class_name EnemyMedium
+extends EnemyBase
+## 中型轰炸机：从屏幕一侧横掠，正弦起伏，朝玩家方向瞄准射击。
+
+const TEX := preload("res://assets/svg/enemy_medium.svg")
+
+var side := 1  ## 1 = 从左向右，-1 = 从右向左
+var base_y := 220.0
+var vx := 110.0
+var fire_interval := 1.6
+var bullet_speed := 235.0
+
+var _t := 0.0
+var _fire_timer := 1.0
+
+
+func setup(p_side: int, p_y: float, p_vx := 110.0, p_bullet_speed := 235.0, p_fire_interval := 1.6) -> void:
+	side = p_side
+	base_y = p_y
+	vx = p_vx
+	bullet_speed = p_bullet_speed
+	fire_interval = p_fire_interval
+	drops_powerup = true
+	position = Vector2(-70.0 if side == 1 else 610.0, base_y)
+
+
+func _ready() -> void:
+	collision_layer = 4
+	collision_mask = 0
+	hp = 6
+	score_value = 400
+	hit_radius = 30.0
+	var sprite := Sprite2D.new()
+	sprite.texture = TEX
+	add_child(sprite)
+	var shape := CollisionShape2D.new()
+	var rect := RectangleShape2D.new()
+	rect.size = Vector2(54.0, 30.0)
+	shape.shape = rect
+	add_child(shape)
+
+
+func _process(delta: float) -> void:
+	_t += delta
+	position.x += vx * float(side) * delta
+	position.y = base_y + sin(_t * 1.1) * 46.0
+	if (side == 1 and position.x > 610.0) or (side == -1 and position.x < -70.0):
+		queue_free()
+		return
+	_fire_timer -= delta
+	if _fire_timer <= 0.0:
+		_fire_timer = fire_interval
+		_fire_bullet(_aim_direction() * bullet_speed)