extends RefCounted
## NPC theater: seated guests, camera raises, and performers playing to the
## sidewalk once their intent's waypoint is reached (PLAN.md: NPC Behavior Types).

const NpcAvatar := preload("res://src/game/npc_avatar.gd")
const NpcProfile := preload("res://src/core/npc_profile.gd")
const Rules := preload("res://src/core/rules.gd")

func _avatar(intent: String, npc_type: int = Rules.NpcType.TOURIST) -> Node:
	var p := NpcProfile.new()
	p.id = "theater"
	p.display_name = "Theater"
	p.npc_type = npc_type
	var avatar: Node = NpcAvatar.new()
	avatar.setup(p, intent, 1234, Vector3(2, 0.5, 8), Vector3(0, 0.5, 6))
	return avatar

func test_pose_per_intent() -> bool:
	var cases := {
		"sit": "sit",
		"photo": "photo",
		"film": "film",
		"perform": "perform",
		"enter": "idle",
	}
	var ok := true
	for intent in cases.keys():
		var avatar := _avatar(str(intent))
		avatar.arrived = true
		if avatar.theater_pose() != cases[intent]:
			ok = false
		avatar.free()
	return TestUtils.check(ok, "each intent maps to its theater pose once arrived")

func test_walking_npc_has_no_pose() -> bool:
	var avatar := _avatar("sit")
	var a := TestUtils.check_eq(avatar.theater_pose(), "idle", "a walking NPC does not sit yet")
	avatar.arrived = true
	var b := TestUtils.check_eq(avatar.theater_pose(), "sit", "arriving starts the pose")
	avatar.free()
	return a and b

func test_only_sit_crouches() -> bool:
	var a := TestUtils.check(is_equal_approx(NpcAvatar.crouch_for_pose("sit"), -0.34), "sit lowers the rig")
	var b := TestUtils.check_eq(NpcAvatar.crouch_for_pose("photo"), 0.0, "photo keeps standing")
	var c := TestUtils.check_eq(NpcAvatar.crouch_for_pose("perform"), 0.0, "perform keeps standing")
	var d := TestUtils.check_eq(NpcAvatar.crouch_for_pose("idle"), 0.0, "idle keeps standing")
	return a and b and c and d

func test_photo_lift_is_brief() -> bool:
	var raised := 0.0
	var flat := 0.0
	for i in 120:
		var phase := float(i) / 60.0
		var lift: float = NpcAvatar.prop_lift_for_pose("photo", phase)
		raised = maxf(raised, lift)
		if i == 0:
			flat = lift
	var a := TestUtils.check(raised > 0.1, "the camera prop lifts while photographing")
	var b := TestUtils.check(raised <= 0.16 + 0.001, "the lift stays small")
	var c := TestUtils.check_eq(flat, 0.0, "the lift starts at rest")
	var d := TestUtils.check_eq(NpcAvatar.prop_lift_for_pose("sit", 0.5), 0.0, "seated guests do not lift a prop")
	return a and b and c and d

func test_performer_sways_only_when_performing() -> bool:
	var peak := 0.0
	for i in 120:
		peak = maxf(peak, absf(NpcAvatar.sway_for_pose("perform", float(i) / 60.0)))
	var a := TestUtils.check(peak > 0.05, "the performer's sign sways")
	var b := TestUtils.check_eq(NpcAvatar.sway_for_pose("photo", 1.0), 0.0, "photographers do not sway")
	var c := TestUtils.check_eq(NpcAvatar.sway_for_pose("sit", 1.0), 0.0, "seated guests do not sway")
	return a and b and c

func test_photo_prop_is_wired_for_camera_archetypes() -> bool:
	var influencer := _avatar("photo", Rules.NpcType.INFLUENCER)
	var tourist := _avatar("photo", Rules.NpcType.TOURIST)
	var performer := _avatar("perform", Rules.NpcType.PERFORMER)
	var a := TestUtils.check(influencer._photo_prop != null, "influencer carries a camera prop")
	var b := TestUtils.check(tourist._photo_prop != null, "tourist carries a camera prop")
	var c := TestUtils.check(performer._sign_prop != null, "performer carries a sign prop")
	influencer.free()
	tourist.free()
	performer.free()
	return a and b and c

func test_sitting_rig_actually_lowers() -> bool:
	var avatar := _avatar("sit")
	avatar.arrived = true
	for i in 40:
		avatar._animate(0.016)
	var a := TestUtils.check(avatar._rig.position.y < -0.2, "the rig settles into the crouch")
	var legs_bent := TestUtils.check(absf(avatar._legs[0].rotation.x) > deg_to_rad(30.0), "legs bend for the seat")
	avatar.arrived = false
	for i in 60:
		avatar._animate(0.016)
	var b := TestUtils.check(avatar._rig.position.y > -0.1, "standing back up lifts the rig")
	avatar.free()
	return a and legs_bent and b