-- gen_portraits.lua: generate portrait sprite sheet for dialogue UI.
-- Each portrait cell: 24x24. Single row of many cells.
-- Cells order:
--  0 player-smile
--  1 player-realface (tired)
--  2 afu (dog mayor) smile
--  3 afu flat
--  4 afu off
--  5 yuanyuan (rabbit baker) smile
--  6 yuanyuan flat
--  7 yuanyuan off
--  8 dabao (bear postman) smile
--  9 dabao flat
-- 10 dabao off
-- 11 mimi (cat shopkeeper) smile
-- 12 mimi flat
-- 13 mimi off
-- 14 dr_fu (deer doctor) smile  (only smile; flat/off unused but provided)
-- 15 dr_fu flat
-- 16 dr_fu off
-- 17 twinbirds smile
-- 18 grandpa_turtle (turtle elder) smile
-- 19 grandpa_turtle flat
-- 20 grandpa_turtle off
-- 21..25 extras (squirrel/hedgehog/etc) smile
-- Produces assets/sprites/portraits.png
local FW = 24
local FH = 24
local N = 26
local W = FW*N
local H = FH
app.command.NewFile{ width=W, height=H, colorMode=ColorMode.RGB }
local spr = app.activeSprite
local img = app.activeImage
for y=0,H-1 do for x=0,W-1 do img:drawPixel(x,y, app.pixelColor.rgba(0,0,0,0)) end end
local function px(x,y,c) img:drawPixel(x,y,c) end
local function rect(ox,oy,w,h,c) for y=oy,oy+h-1 do for x=ox,ox+w-1 do px(ox+(x-ox),y,c) end end end
-- careful rect above buggy; redefine properly
local function R(ox,oy,w,h,c) for y=oy,oy+h-1 do for x=ox,ox+w-1 do img:drawPixel(x,y,c) end end end

-- shared colors
local skin = app.pixelColor.rgba(255,214,176,255)
local skinS= app.pixelColor.rgba(224,176,140,255)
local eye  = app.pixelColor.rgba(56,40,40,255)
local mouth= app.pixelColor.rgba(200,110,110,255)
local cheek= app.pixelColor.rgba(255,170,170,255)
local white= app.pixelColor.rgba(245,245,245,255)
local black= app.pixelColor.rgba(40,40,40,255)

-- generic face drawer: ox,oy top-left of 24x24 cell
-- species-specific color + ears, expression (smile/flat/off)
-- species: human, dog, rabbit, bear, cat, deer, bird, turtle, squirrel, hedgehog
local function face(ox, oy, col, species, expr)
  -- head fill
  R(ox+6, oy+5, 12, 12, col)
  -- ears per species
  if species == "rabbit" then
    R(ox+7, oy+1, 2, 5, col); R(ox+15, oy+1, 2, 5, col)
    R(ox+7, oy+2, 2, 2, skinS); R(ox+15, oy+2, 2, 2, skinS)
  elseif species == "dog" then
    R(ox+5, oy+4, 2, 4, col); R(ox+17, oy+4, 2, 4, col)
    -- floppy
    R(ox+4, oy+6, 2, 6, col)
    R(ox+18, oy+6, 2, 6, col)
  elseif species == "bear" then
    R(ox+5, oy+3, 3, 3, col); R(ox+16, oy+3, 3, 3, col)
    px(ox+6, oy+4, skinS); px(ox+17, oy+4, skinS)
  elseif species == "cat" then
    -- pointy ears
    px(ox+6, oy+4, col); px(ox+7, oy+2, col); px(ox+8, oy+1, col); px(ox+9, oy+3, col)
    px(ox+15, oy+3, col); px(ox+16, oy+1, col); px(ox+17, oy+2, col); px(ox+18, oy+4, col)
  elseif species == "deer" then
    px(ox+8, oy+1, col); px(ox+8, oy+2, col); px(ox+9, oy+0, col)
    px(ox+9, oy+2, skinS); px(ox+15, oy+0, col); px(ox+15, oy+2, col); px(ox+14, oy+1, col)
    px(ox+14, oy+2, skinS)
  elseif species == "turtle" then
    -- no ears, rounded; draw a cap
    R(ox+5, oy+4, 14, 4, col)
  elseif species == "bird" then
    R(ox+6, oy+4, 12, 10, col)
    px(ox+7, oy+3, col); px(ox+16, oy+3, col)
  elseif species == "squirrel" then
    R(ox+5, oy+4, 2, 3, col); R(ox+17, oy+4, 2, 3, col)
    R(ox+2, oy+2, 3, 6, col) -- tail
  elseif species == "hedgehog" then
    for x=6,17,2 do px(ox+x, oy+3, skinS); px(ox+x, oy+4, skinS) end
  end
  -- eyes (expression dependent)
  if expr == "smile" then
    px(ox+9, oy+9, eye); px(ox+14, oy+9, eye)
    px(ox+9, oy+10, eye); px(ox+14, oy+10, eye)
    -- cheeks
    px(ox+8, oy+12, cheek); px(ox+15, oy+12, cheek)
    -- smile mouth
    px(ox+11, oy+13, mouth); px(ox+12, oy+13, mouth)
    px(ox+10, oy+12, mouth); px(ox+13, oy+12, mouth)
  elseif expr == "flat" then
    px(ox+9, oy+9, eye); px(ox+14, oy+9, eye)
    -- straight mouth
    px(ox+11, oy+13, mouth); px(ox+12, oy+13, mouth)
  elseif expr == "off" then
    -- one eye dropped 1px (the signature "off" detail)
    px(ox+9, oy+9, eye); px(ox+9, oy+10, eye)
    px(ox+14, oy+10, eye); -- right eye 1px lower
    -- mouth with extra 1px droop
    px(ox+11, oy+13, mouth); px(ox+12, oy+13, mouth); px(ox+13, oy+13, mouth)
  end
end

-- 0 player smile (human)
face(0*FW, 0, skin, "human", "smile")
-- add hair
R(0*FW+6, 3, 12, 4, app.pixelColor.rgba(150,110,80,255))
-- 1 player realface (tired)
face(1*FW, 0, skinS, "human", "flat")
R(1*FW+6, 3, 12, 4, app.pixelColor.rgba(150,110,80,255))
-- tired eyes: half-lids
px(1*FW+9, 10, skinS); px(1*FW+14, 10, skinS)
-- a small frown
px(1*FW+11, 14, mouth); px(1*FW+12, 14, mouth)
-- shadow under eyes
px(1*FW+9, 11, skinS); px(1*FW+14, 11, skinS)

-- species color presets
local dogC   = app.pixelColor.rgba(200,150,90,255)
local rabC   = app.pixelColor.rgba(245,235,230,255)
local bearC  = app.pixelColor.rgba(150,100,60,255)
local catC   = app.pixelColor.rgba(230,220,210,255)
local deerC  = app.pixelColor.rgba(210,160,110,255)
local birdC  = app.pixelColor.rgba(120,200,230,255)
local turC   = app.pixelColor.rgba(120,160,90,255)
local sqC    = app.pixelColor.rgba(170,110,70,255)
local hedC   = app.pixelColor.rgba(150,110,70,255)

-- 2-4 afu dog: smile/flat/off
face(2*FW, 0, dogC, "dog", "smile")
face(3*FW, 0, dogC, "dog", "flat")
face(4*FW, 0, dogC, "dog", "off")
-- 5-7 yuanyuan rabbit
face(5*FW, 0, rabC, "rabbit", "smile")
face(6*FW, 0, rabC, "rabbit", "flat")
face(7*FW, 0, rabC, "rabbit", "off")
-- 8-10 dabao bear
face(8*FW, 0, bearC, "bear", "smile")
face(9*FW, 0, bearC, "bear", "flat")
face(10*FW, 0, bearC, "bear", "off")
-- 11-13 mimi cat
face(11*FW, 0, catC, "cat", "smile")
face(12*FW, 0, catC, "cat", "flat")
face(13*FW, 0, catC, "cat", "off")
-- 14-16 dr_fu deer (only smile used; flat/off provided for completeness)
face(14*FW, 0, deerC, "deer", "smile")
face(15*FW, 0, deerC, "deer", "flat")
face(16*FW, 0, deerC, "deer", "off")
-- 17 twinbirds smile (single)
face(17*FW, 0, birdC, "bird", "smile")
-- 18-20 grandpa turtle
face(18*FW, 0, turC, "turtle", "smile")
face(19*FW, 0, turC, "turtle", "flat")
face(20*FW, 0, turC, "turtle", "off")
-- 21-25 extras
face(21*FW, 0, sqC, "squirrel", "smile")
face(22*FW, 0, hedC, "hedgehog", "smile")
face(23*FW, 0, sqC, "squirrel", "smile")
face(24*FW, 0, hedC, "hedgehog", "smile")
face(25*FW, 0, sqC, "squirrel", "smile")

local out = "assets/sprites/portraits.png"
spr:saveCopyAs(out)
print("Saved " .. out)
app.exit()