destroyulator/game/dev/DemoDriver.gd

extends Node3D

## Dev-only capture harness. Loads main.tscn and drives the player through a scripted
## tour so a headless/CI run can record video of the actual game with Godot's
## --write-movie, without a human at the keyboard (and without screen-recording perms).
##
##   /Applications/Godot.app/Contents/MacOS/Godot --path game \
##     --resolution 1280x720 --write-movie /tmp/cap.avi --quit-after 900 \
##     dev/demo.tscn
##
## Not shipped: excluded from export presets. Drives the player directly (position /
## yaw / pitch / _queue_attack) rather than faking InputEvents, so it stays immune to
## input-map changes.

const MAIN := "res://main.tscn"

var _main: Node3D
var _player: Player
var _t := 0.0
var _step := 0
var _step_t := 0.0
var _frames := 0

# Each step: {dur, move_to (Vector3 or null), look_at (Vector3 or null), act (String)}
# act: "" | "punch" | "kick" | "rain" | "reset"
var _script: Array = []

func _ready() -> void:
	var packed := load(MAIN) as PackedScene
	_main = packed.instantiate()
	add_child(_main)
	await get_tree().process_frame
	_player = _find_player(_main)
	if _player == null:
		push_error("[demo] no Player found")
		return
	# the demo drives the camera; don't let the OS grab the pointer
	Input.mouse_mode = Input.MOUSE_MODE_VISIBLE
	_build_script()

func _find_player(n: Node) -> Player:
	if n is Player:
		return n
	for c in n.get_children():
		var r := _find_player(c)
		if r != null:
			return r
	return null

func _build_script() -> void:
	# LEVEL 0: stand in front of it, let the dread max out, and die.
	_script = [
		{"dur": 1.2, "move_to": null, "look_at": null, "act": "level:backrooms"},
		{"dur": 0.3, "move_to": Vector3(0, 0, 3.0), "look_at": Vector3(0, 1.5, -3.0),
			"act": "ent:0,-3"},
		{"dur": 2.6, "move_to": null, "look_at": null, "act": ""},
		{"dur": 0.4, "move_to": null, "look_at": null, "act": "kill"},
		{"dur": 7.0, "move_to": null, "look_at": null, "act": ""},
	]

func _motion(verbose := false) -> float:
	var total := 0.0
	var seen := {}
	var worst: Array = []
	for g in ["smashable", "debris"]:          # every body is in one of these two
		for n in get_tree().get_nodes_in_group(g):
			if seen.has(n) or not (n is RigidBody3D):
				continue
			seen[n] = true
			var b := n as RigidBody3D
			if b.freeze:
				continue
			var v := b.linear_velocity.length()
			total += v
			worst.append([v, b])
	if verbose:
		worst.sort_custom(func(a, c): return a[0] > c[0])
		for i in mini(6, worst.size()):
			var b: RigidBody3D = worst[i][1]
			var what := "RigidBody3D"
			if b is Record:
				what = "Record(sleeve %s)" % (b as Record).sleeve_genre
			elif b is Smashable:
				what = "Smashable(%s)" % (b as Smashable).kind
			var groups := ""
			for g in b.get_groups():
				groups += str(g) + " "
			print("   %7.1f m/s  %-18s %-22s parent=%s groups=[%s] at %s" % [
				worst[i][0], b.name, what, b.get_parent().name, groups.strip_edges(),
				b.global_position.snappedf(0.01)])
	return total

func _process(dt: float) -> void:
	if _player == null or _step >= _script.size():
		return
	if _frames < 3:
		_frames += 1
		if _frames == 2:
			print("[settle] FIRST FRAME — where things start:")
			_motion(true)
	if _t < 6.0 and int(_t) != int(_t + dt):
		print("[settle] t=%ds  total body speed = %.2f m/s" % [int(_t + dt), _motion(true)])
	_t += dt
	var s: Dictionary = _script[_step]
	var dur: float = s["dur"]
	# fire the action when the step BEGINS, so a capture at step_start + n frames
	# actually shows the swing rather than the second of stillness before it
	if not s.get("_fired", false):
		s["_fired"] = true
		_do(String(s["act"]))
	_step_t += dt

	var mt = s.get("move_to")
	if mt != null:
		var to: Vector3 = mt
		var k: float = clampf(_step_t / maxf(dur, 0.001), 0.0, 1.0)
		k = k * k * (3.0 - 2.0 * k)                       # smoothstep so the dolly eases
		var from: Vector3 = s.get("_from", _player.global_position)
		if not s.has("_from"):
			s["_from"] = _player.global_position
			from = _player.global_position
		_player.global_position = from.lerp(to, k)
	var la = s.get("look_at")
	if la != null:
		_aim(la, clampf(_step_t / maxf(dur, 0.001), 0.0, 1.0))

	if _step_t >= dur:
		_step += 1
		_step_t = 0.0

## Turn the body (yaw) + head (pitch) toward a world point, eased.
func _aim(target: Vector3, k: float) -> void:
	var eye: Vector3 = _player.global_position + Vector3(0, _player.eye_height, 0)
	var d: Vector3 = target - eye
	if d.length() < 0.001:
		return
	var want_yaw := atan2(-d.x, -d.z)
	var want_pitch := atan2(d.y, Vector2(d.x, d.z).length())
	var e := clampf(k * 0.14, 0.0, 1.0) + 0.06
	_player.rotation.y = lerp_angle(_player.rotation.y, want_yaw, e)
	var head: Node3D = _player.get_node_or_null("Head")
	if head != null:
		head.rotation.x = lerp_angle(head.rotation.x, want_pitch, e)

func _do(act: String) -> void:
	if act.begins_with("weapon:"):
		_player.select(int(act.substr(7)))
		return
	if act.begins_with("level:"):
		if _main.has_method("_load_level"):
			_main._load_level(act.substr(6))
		return
	if act.begins_with("mode:"):
		var md = _main.get("_modes")
		if md != null:
			md.set_mode(int(act.substr(5)))
		return
	if act.begins_with("ent:"):
		# park the entity somewhere specific so the tour can look at it on cue
		var br = _main.get("_backrooms")
		if br != null and br.entity != null:
			var p := act.substr(4).split(",")
			br.entity.global_position = Vector3(float(p[0]), 0.0, float(p[1]))
			br.entity.state = Entity.S.STALKING
		return
	if act == "kill":
		var b3 = _main.get("_backrooms")
		if b3 != null:
			b3.dread = 0.99
		return
	if act == "scare":
		var br2 = _main.get("_backrooms")
		if br2 != null and br2.entity != null:
			br2.entity._cd = 0.0
			br2.entity._catch()
		return
	if act == "puff":
		var dd = _main.get("_dust")
		if dd != null:
			dd._cd = 0.0
			dd.discharge()
		return
	if act == "interact":
		var gg = _main.get("_gauntlet")
		if gg != null:
			gg.interact()
		return
	if act.begins_with("rage:"):
		var r = _main.get("_rage")
		if r != null:
			r.provoke(float(act.substr(5)), "the demo is provoking you")
		return
	match act:
		"task":                                   # press E at the nearest station
			var t = _main.get("_tasks")
			if t != null:
				t.try_start()
		"type":                                   # enter the requested figure correctly
			var t2 = _main.get("_tasks")
			if t2 != null and t2.is_working():
				var st: Dictionary = t2.panel_state()
				var want := String(st.get("instruction", "")).split(" ")[1]
				for ch in want:
					t2.handle_key(KEY_0 + int(ch))
		"commit":
			var t3 = _main.get("_tasks")
			if t3 != null:
				t3.handle_key(KEY_ENTER)
		"swing":
			_player._queued = true       # same path a left-click takes
		"hud":
			var hud = _main.get("_hud")
			if hud != null:
				hud.cycle()
		"rain":
			if _main.has_method("_rain"):
				_main._rain(500)
		"reset":
			if _main.has_method("_reset"):
				_main._reset()