class_name PixelPeople
extends RefCounted

## Authored side-view poses on a 16x18 grid. No neighbouring atlas characters
## are used as animation frames. All motion is presentation-only.
const COATS := [Color("688da0"), Color("b87659"), Color("a69a63"), Color("89789e"), Color("638d72")]
const SKINS := [Color("edc49d"), Color("c99371"), Color("a56f50")]
const INK := Color("303c40")

static func pose(mode: StringName, frame: int, variant: int, staff: bool) -> Array[Dictionary]:
	var marks: Array[Dictionary] = []
	var skin: Color = SKINS[posmod(variant, SKINS.size())]
	var coat: Color = Color("719d94") if staff else COATS[posmod(variant, COATS.size())]
	var phase := posmod(frame, 8)
	var walk := mode == &"walk" or mode == &"carry_walk"
	var work := mode in [&"work", &"clean", &"eat"]
	var stride := [0, 1, 2, 1, 0, -1, -2, -1][phase] as int
	var bob := -1 if walk and phase in [2, 6] else 0
	if mode == &"standard_room_sleep":
		# General-room presentation only: same16x18 actor grid and original skin.
		# Breathing follows existing visual frame; no Clock, guest or service change.
		var breathing := -1 if phase in [2, 3, 4] else 0
		mark(marks, Rect2(2, 14, 13, 2), INK)
		mark(marks, Rect2(2, 11, 5, 4), Color("eee5c9"))
		mark(marks, Rect2(3, 12, 4, 3), skin)
		mark(marks, Rect2(2, 12, 2, 3), INK)
		mark(marks, Rect2(5, 13, 2, 1), INK)
		mark(marks, Rect2(7, 11 + breathing, 8, 5 - breathing), INK)
		mark(marks, Rect2(8, 12 + breathing, 6, 3 - breathing), Color("608d84"))
		mark(marks, Rect2(8, 12 + breathing, 6, 1), Color("eee5c9"))
		mark(marks, Rect2(9, 14 + breathing, 4, 1), Color("719d94"))
		mark(marks, Rect2(6, 13 + breathing, 2, 1), skin)
		mark(marks, Rect2(14, 14, 1, 2), INK)
		return marks
	if mode in [&"sleep", &"collapsed"]:
		mark(marks, Rect2(2, 14, 12, 2), INK)
		mark(marks, Rect2(3, 12, 4, 3), skin)
		mark(marks, Rect2(2, 12, 2, 3), INK)
		mark(marks, Rect2(7, 12, 6, 3), coat)
		mark(marks, Rect2(13, 13, 2, 2), INK)
		if mode == &"sleep":
			mark(marks, Rect2(3 + phase / 3, 8 - phase / 3, 2, 1), Color("eee6c7"))
		return marks
	# Far arm and leg, then silhouette, face, near arm and leg.
	mark(marks, Rect2(6, 8 + bob, 2, 5), coat.darkened(0.25))
	var far := -stride if walk else 0
	var near := stride if walk else 0
	mark(marks, Rect2(7 + far, 12 + bob, 2, 4 - bob), INK.lightened(0.12))
	mark(marks, Rect2(7 + far, 16, 3, 1), INK)
	mark(marks, Rect2(6, 6 + bob, 5, 7), INK)
	mark(marks, Rect2(7, 7 + bob, 4, 5), coat)
	mark(marks, Rect2(7, 1 + bob, 4, 5), skin)
	mark(marks, Rect2(6, 1 + bob, 4, 2), INK)
	mark(marks, Rect2(6, 3 + bob, 1, 2), INK)
	mark(marks, Rect2(11, 3 + bob, 1, 2), skin)
	mark(marks, Rect2(10, 3 + bob, 1, 1), INK)
	mark(marks, Rect2(8, 6 + bob, 2, 1), skin)
	mark(marks, Rect2(8 + near, 12 + bob, 2, 4 - bob), INK)
	mark(marks, Rect2(8 + near, 16, 3, 1), INK)
	var arm := -stride if walk else 0
	if work:
		arm = 2 if phase < 4 else 1
	mark(marks, Rect2(9 + arm, 8 + bob, 2, 3), coat.lightened(0.12))
	mark(marks, Rect2(9 + arm, 11 + bob, 2, 1), skin)
	if staff:
		mark(marks, Rect2(7, 9 + bob, 2, 3), Color("e3dfc2"))
	if mode in [&"carry", &"carry_walk"]:
		mark(marks, Rect2(10, 8 + bob, 5, 5), Color("956940"))
		mark(marks, Rect2(10, 8 + bob, 5, 1), Color("d3ad6b"))
		mark(marks, Rect2(12, 9 + bob, 1, 4), Color("b48850"))
	elif mode == &"clean":
		mark(marks, Rect2(11 + arm, 9, 1, 7), Color("af9059"))
		mark(marks, Rect2(9 + arm, 16, 5, 1), Color("d8bc78"))
	elif mode == &"eat":
		mark(marks, Rect2(11, 6 if phase < 4 else 10, 3, 2), Color("f3ebcf"))
	elif mode == &"work":
		mark(marks, Rect2(11, 12, 4, 1), Color("efe7ce"))
		mark(marks, Rect2(12 + phase % 2, 10, 1, 2), Color("805e44"))
	elif mode == &"wait":
		mark(marks, Rect2(9, 9, 3, 1), skin)
	return marks

static func mark(marks: Array[Dictionary], rect: Rect2, color: Color) -> void:
	marks.append({&"rect": rect, &"color": color})

static func draw(canvas: CanvasItem, origin: Vector2, pixel: float, mode: StringName, frame: int, variant: int, staff: bool, facing_left: bool) -> void:
	for item: Dictionary in pose(mode, frame, variant, staff):
		var rect: Rect2 = item[&"rect"]
		if facing_left:
			rect.position.x = 16 - rect.end.x
		canvas.draw_rect(Rect2(origin + rect.position * pixel, rect.size * pixel), item[&"color"])