level + enemy spawner refactor

levels/enemy_spawner.gd

@@ -0,0 +1,57 @@
+extends Node3D
+
+var boxes: Array[CSGBox3D]
+var points: Array[Vector3]
+
+const MAX_CACHED_POINTS := 100
+var doomed_point_idx := 0
+
+func _get_point() -> Vector3:
+	assert(not boxes.is_empty())
+
+	var box: CSGBox3D = boxes.pick_random()
+	var x_stride := box.size.x / 2
+	var y_stride := box.size.y / 2
+
+	var ret := box.global_position
+	ret.x += randf_range(-x_stride, x_stride)
+	ret.y += randf_range(-y_stride, y_stride)
+
+	return ret
+
+func _ready() -> void:
+	for child in get_children():
+		if child is CSGBox3D:
+			boxes.push_back(child)
+
+func _process(_delta: float) -> void:
+	var v := _get_point()
+	v.y = 50.
+
+	var col_mask := 16 # floor collision layer
+	var params := PhysicsRayQueryParameters3D.create(
+		v, v + Vector3.DOWN * 100., col_mask
+	)
+	var raycast := get_world_3d().direct_space_state.intersect_ray(params)
+	
+	if not raycast.is_empty():
+		var hitpos: Vector3 = raycast.position
+		
+		if points.size() < MAX_CACHED_POINTS:
+			points.push_back(hitpos)
+		else:
+			points[doomed_point_idx] = hitpos
+			doomed_point_idx += 1
+			doomed_point_idx = doomed_point_idx % MAX_CACHED_POINTS
+
+func _on_timer_timeout() -> void:
+	if points.is_empty(): return
+
+	var pos: Vector3 = points.pick_random()
+	pos += Vector3.UP * 0.02
+	var scene := preload("res://enemies/police_car/police_car.tscn")
+	var car: Node3D = scene.instantiate()
+	car.global_position = pos
+	get_tree().current_scene.add_child(car)
+
+

levels/enemy_spawner.gd.uid

@@ -0,0 +1 @@
+uid://bayj73ugmsbd

levels/trees.gd

@@ -0,0 +1,9 @@
+@tool
+extends Node3D
+
+@export_tool_button("Randomize Tree Rotations")
+var _rot_button = _randomize_rotations
+
+func _randomize_rotations() -> void:
+	for child in get_children():
+		child.rotation.y = randf() * TAU

levels/trees.gd.uid

@@ -0,0 +1 @@
+uid://dwtdtm0engrs1