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 +1,58 @@
+class_name EnemyFortress
+extends EnemyBase
+## 地面固定堡垒：随地面同速下滚，炮塔持续追踪玩家并瞄准射击。
+
+const TEX := preload("res://assets/svg/fortress.svg")
+const TURRET_TEX := preload("res://assets/svg/fortress_turret.svg")
+const SCROLL_SPEED := 120.0
+const MUZZLE_LEN := 26.0
+
+var difficulty := 1.0
+var fire_interval := 2.6
+var bullet_speed := 220.0
+
+var _turret: Sprite2D
+var _fire_timer := 0.0
+
+
+func setup(p_x: float, p_y: float, p_difficulty := 1.0) -> void:
+	position = Vector2(p_x, p_y)
+	difficulty = p_difficulty
+	fire_interval = maxf(1.5, 2.6 / p_difficulty)
+	bullet_speed = 220.0 * p_difficulty
+
+
+func _ready() -> void:
+	# 层 32：地面单位——玩家子弹可命中，但玩家机体不与其碰撞（飞越上空）
+	collision_layer = 32
+	collision_mask = 0
+	hp = 4
+	score_value = 300
+	hit_radius = 26.0
+	var base := Sprite2D.new()
+	base.texture = TEX
+	add_child(base)
+	_turret = Sprite2D.new()
+	_turret.texture = TURRET_TEX
+	add_child(_turret)
+	var shape := CollisionShape2D.new()
+	var circle := CircleShape2D.new()
+	circle.radius = 24.0
+	shape.shape = circle
+	add_child(shape)
+	_fire_timer = randf_range(0.8, 1.8)
+
+
+func _process(delta: float) -> void:
+	position.y += SCROLL_SPEED * delta
+	if position.y > 1020.0:
+		queue_free()
+		return
+	var dir := _aim_direction()
+	# 炮塔美术默认朝下(+Y)：rotate 对齐瞄准方向
+	_turret.rotation = dir.angle() - PI / 2.0
+	if position.y > 60.0 and position.y < 720.0:
+		_fire_timer -= delta
+		if _fire_timer <= 0.0:
+			_fire_timer = fire_interval
+			_fire_bullet(dir * bullet_speed, dir * MUZZLE_LEN)