vacation/vacation.p8

pico-8 cartridge // http://www.pico-8.com
version 41
__lua__

-- vacation (18+)
-- kistaro windrider

--------------------------------
-- copyright (C) 2024 kistaro windrider
--
-- this program is free software; you can redistribute it and/or modify
-- it under the terms of the gnu general public license as published by
-- the free software foundation; either version 2 of the license, or
-- (at your option) any later version.
--
-- this program is distributed in the hope that it will be useful,
-- but without any warranty; without even the implied warranty of
-- merchantability or fitness for a particular purpose.  see the
-- gnu general public license for more details.
--------------------------------

-- addtional credits
-- dogica font by roberto mocci
-- https://www.dafont.com/es/dogica.font
--
-- converted by josれた aular
-- https://jaular.itch.io/pico-8-dogica-font

-- tab 0: library
-- tab 1: p8 entry points
-- tabs 2...F: actual code

function usplit(str)
 return unpack(split(str))
end
function csv(s)
 local ret = split(s, "\n")
 for i, v in ipairs(ret) do
  ret[i] = type(v) == "string" and split(v) or { v }
 end
 return ret
end

-- generate standard "overlay"
-- constructor for type tt.
-- if more is defined, generated
-- new calls more(ret) after
-- ret is definitely not nil
-- before calling setmetatable.
-- use to initialize mutables.
--
-- if there was a previous new,
-- it is invoked on the new
-- object *after* more, because
-- this works better with the
-- `more` impls i use.
function mknew(tt, more)
 local mt, oldnew={__index=tt},tt.new
 tt.new=function(ret)
  if (not ret) ret = {}
  if (more) more(ret)
  if (oldnew) oldnew(ret)
  setmetatable(ret, mt)
  return ret
 end
end

event_list = {is_event_list=true}
mknew(event_list, function(x)
  x.next=nil
  x.tail=x
 end)

function event_list:push_back(x)
 self.tail.next = x
 self.tail = x
end

function event_list:update()
 local p, n = self, self.next
 while n do
  if n:update() then
   p.next = n.next
  else
   p = n
  end
  n = n.next
 end
 self.tail = p
 return p
end

function event_list:draw()
 local n = self.next
 while n do
  n:draw()
  n = n.next
 end
end

-- if t[mname] is a thing,
-- invoke it as a method. else,
-- try each object in t
function outer_or_each_opt(t, mname)
 local fun = t[mname]
 if fun then
  fun(t)
  return
 end
 foreach(t, function(o)
  local f = o[mname]
  if(f) f(o)
 end)
end

function nop() end

-- puke emits a verbose string
-- describing item, indented to
-- the specified depth (0 by
-- default). used for table
-- debugging. table-type keys
-- are not legible here
function puke(item, indent, seen, hidekey)
 if (type(item) ~= "table") return tostr(item)
 
 seen = seen or {}
 if (seen[item]) return "<<...>>"
 seen[item] = true
 
 indent = indent or 0
 local pfx = "\n"
 for _=1,indent do
  pfx ..= " "
 end
 local xpfx = pfx.." "

 if item.is_event_list then
  local ret,n = "event_list <",0
  item:strip(function(x)
   n += 1
   ret ..= xpfx..tostr(n)..": "..puke(x, indent+2, seen, "next")
  end)
  return ret..pfx..">"
 end

 local ret = "{"
 for k, v in pairs(item) do
  if (k ~= hidekey) ret ..= xpfx..tostr(k)..": "..puke(v, indent+2, seen)
 end
 return ret..pfx.."}"
end

-- convenience for debugging
function puketh(item, ...)
 printh(puke(item), ...)
end

function pukeboard(item)
 puketh(item, "@clip")
end

-------------------------------
-- view
-------------------------------
-- composits drawable items.
-- add items to .views to
-- composit them. x and y are
-- relative reverse camera
-- offsets. drawable items will
-- observe appropriate incoming
-- camera and clip state.
-- clipping respects existing
-- clipping so stacked views
-- intersect.
-------------------------------
view = {
 x=0,
 y=0,
 w=128,
 h=128,
}
mknew(view, function(x)
 if (not x.views) x.views = {}
end)

function view.of(subviews)
 return view.new{views=subviews}
end

function view:update()
 outer_or_each_opt(self.views, "update")
end

function view:draw()
 local oldcam, oldclip = $0x5f28, $0x5f20
 poke2(0x5f28, %0x5f28-self.x)
 poke2(0x5f2a, %0x5f2a-self.y)
 clip(-%0x5f28, -%0x5f2a, self.w, self.h, true)
 outer_or_each_opt(self.views, "draw")
 poke4(0x5f20, oldclip)
 poke4(0x5f28, oldcam)
end

-- draws opaque rectangles.
-- default bg is equivalent to
-- clip-aware cls.
-- restores prior fill pattern.
bg = {
 x=0,y=0,w=128,h=128,fp=0,c=0
}
mknew(bg)

function bg:draw()
 local oldfp=fillp(self.fp)
 rectfill(self.x,self.y,self.x+self.w,self.y+self.h,self.c)
 fillp(oldfp)
end

-->8
-- setup and p8 entry points

function _init()
 -- custom font: dogica
 poke(0x5600,unpack(split"6,8,9,0,0,1,0,0,0,0,0,0,0,0,0,0,69,16,32,81,85,0,117,116,0,0,0,0,0,84,22,6,2,0,0,0,96,6,38,0,0,7,7,16,112,87,80,16,5,0,1,0,112,7,39,0,0,0,0,32,0,112,116,1,0,0,96,102,96,0,96,96,0,96,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1,1,1,1,1,0,1,0,0,10,10,5,0,0,0,0,0,18,63,18,18,63,18,0,0,14,21,5,14,20,21,14,34,21,21,10,40,84,84,34,6,9,9,6,41,17,46,0,0,2,2,1,0,0,0,0,2,1,1,1,1,1,2,0,1,2,2,2,2,2,1,0,0,4,21,10,21,4,0,0,0,4,4,31,4,4,0,0,0,0,0,0,0,2,2,1,0,0,0,0,15,0,0,0,0,0,0,0,0,0,1,0,8,8,4,4,2,2,1,1,14,17,21,21,21,17,14,0,4,7,4,4,4,4,31,0,14,17,16,8,4,2,31,0,15,16,16,14,16,16,15,0,8,12,10,9,31,8,8,0,31,1,15,16,16,17,14,0,14,17,1,15,17,17,14,0,31,17,16,8,4,2,2,0,14,17,17,14,17,17,14,0,14,17,17,30,16,8,6,0,0,0,1,0,0,1,0,0,0,0,0,2,0,2,2,1,0,4,2,1,2,4,0,0,0,0,63,0,63,0,0,0,0,1,2,4,2,1,0,0,14,17,16,12,2,0,4,0,30,33,45,41,29,65,62,0,0,14,16,30,17,17,30,0,1,1,15,17,17,17,15,0,0,14,17,1,1,1,30,0,16,16,30,17,17,17,30,0,0,14,17,31,1,1,30,0,28,2,2,15,2,2,2,0,0,30,17,17,17,30,16,14,1,1,13,19,17,17,17,0,2,0,3,2,2,2,7,0,0,7,2,2,2,2,2,1,0,17,9,5,7,9,17,0,0,1,1,1,1,1,6,0,0,54,73,73,73,73,73,0,0,12,19,17,17,17,17,0,0,14,17,17,17,17,14,0,0,15,17,17,17,15,1,1,0,30,17,17,17,30,16,16,0,13,3,1,1,1,1,0,0,14,1,14,16,17,14,0,1,1,15,1,1,1,14,0,0,17,17,17,17,25,22,0,0,17,17,17,10,10,4,0,0,32,37,37,37,37,26,0,0,17,10,4,4,10,17,0,0,0,9,9,9,6,4,3,0,15,8,4,2,1,15,0,3,1,1,1,1,1,3,0,1,1,2,2,4,4,8,8,3,2,2,2,2,2,3,0,4,10,17,0,0,0,0,0,0,0,0,0,0,0,0,63,0,1,2,2,0,0,0,0,14,17,17,17,31,17,17,0,15,17,17,15,17,17,15,0,14,17,1,1,1,17,14,0,31,34,34,34,34,34,30,0,31,1,1,15,1,1,31,0,31,1,1,15,1,1,1,0,30,1,1,25,17,17,30,0,17,17,17,31,17,17,17,0,7,2,2,2,2,2,7,0,15,4,4,4,4,4,3,0,17,9,5,7,9,9,17,0,1,1,1,1,1,1,15,0,33,33,51,45,33,33,33,0,17,19,21,25,17,17,17,0,14,17,17,17,17,17,14,0,15,17,17,15,1,1,1,0,14,17,17,17,21,9,22,0,15,17,17,15,9,17,17,0,14,17,1,14,16,17,14,0,31,4,4,4,4,4,4,0,17,17,17,17,17,17,14,0,17,17,17,17,10,10,4,0,65,65,73,73,73,85,34,0,17,17,10,4,10,17,17,0,17,17,17,10,4,4,4,0,31,16,8,4,2,1,31,0,4,10,2,1,1,2,10,4,1,1,1,1,1,1,1,1,2,5,4,8,8,4,5,2,0,0,0,38,25,0,0,0,0,0,0,0,0,0,0,0,0,0,127,127,127,127,127,0,0,0,85,42,85,42,85,0,0,0,65,127,93,93,62,0,0,0,62,99,99,119,62,0,0,0,17,68,17,68,17,0,0,0,2,30,14,15,8,0,0,0,14,23,31,31,14,0,0,0,27,31,31,14,4,0,0,0,28,54,119,54,28,0,0,0,14,14,31,14,10,0,0,0,28,62,127,42,58,0,0,0,62,103,99,103,62,0,0,0,127,93,127,65,127,0,0,0,28,4,4,7,7,0,0,0,62,99,107,99,62,0,0,0,4,14,31,14,4,0,0,0,0,0,85,0,0,0,0,0,62,115,99,115,62,0,0,0,8,28,127,62,34,0,0,0,31,14,4,14,31,0,0,0,62,119,99,99,62,0,0,0,0,5,82,32,0,0,0,0,0,17,42,68,0,0,0,0,62,107,119,107,62,0,0,0,127,0,127,0,127,0,0,0,85,85,85,85,85,0"))
 -- to use custom fonts, poke(0x5f58, 0x81)
 
 -- disable btnp repeat
 -- TODO: set back to 30 frames
 -- outside of game mode
 poke(0x5f5c, 255)

 -- complex fill API mode
 poke(0x5f34, 1)

 mainview = newtitle()
end

function _update60()
 mainview:update()
end

function _draw()
 mainview:draw()
end

-->8
-- text rendering

-- text colors for zonk mode:
--  8 -- standard
--  9 -- delayed fade
-- 10 -- currently fading in
txtbox = {
 x=0,
 y=0,
 text="???",
 col=8,
 mode=0x81,
}
mknew(txtbox)

function txtbox:update() end

function txtbox:draw()
 poke(0x5f58, self.mode)
 print(self.text, self.x, self.y, self.col)
end

function txtbox:xmax()
 return print(self.text, self.x, -9999)
end

spring = {
 from = 128,
 to = 0,
 frames=120,
 f = 0,
}
mknew(spring)

function spring:update()
 local v = self.v
 self.v:update()
 if self.f >= self.frames then
  v.y=self.to
  return true
 end
 local t, range = self.f/self.frames, self.to - self.from
 v.y = self.to-range*(2^(-10*t)*cos(2*t))
 self.f += 1
end

function spring:draw()
 self.v:draw()
end

scoot = {
 from=0,
 to=-128,
 frames=60,
 f=0,
}
mknew(scoot)

function scoot:update()
 local v = self.v
 self.v:update()
 if self.f >= self.frames then
  v.y=self.to
  return true
 end
 self.f += 1
 if self.f < 0 then
  v.y=self.from
  return
 end
 local t, range = self.f/self.frames, self.to - self.from
 v.y = self.from + range * t * t * t
end

function scoot:draw()
 self.v:draw()
end

scootbox = {}
mknew(scootbox, function(x)
 x.v = view.new()
 x.s = scoot.new{
  from=x.from or scoot.from,
  to=x.to or scoot.to,
  frames=x.frames or scoot.frames,
  v=x.v
 }
end)

function scootbox:update()
 if self.go then
  self.s:update()
 else
  self.v:update()
 end
end

function scootbox:push(drawable)
 add(self.v.views, drawable)
end

function scootbox:done()
 return self.s.f >= self.s.frames
end

function scootbox:draw()
 return self.v:draw()
end

-->8
-- zonk renderer

-->8
-- awakener


-->8
-- consent screens

-->8
-- title screen

-- currently just loading
-- whatever view I want to debug
function newtitle()
 return arcade_level.new()
end

-->8
-- dolphin sprite renderer

phinstate_nrm = {
 --s={4, 36, 4, 9},
 s={4},
 ws=3,
 hs=2,
 idle=true,
 xo=-12,
 yo=-8,
}
phinstate_jump_full = {
 s={7},
 ws=2,
 hs=3,
 xo=-4,
 yo=-8, 
}
phinstate_jump_wane = {
 s={1},
 ws=3,
 hs=3,
 xo=-12,
 yo=-8,
}
phinstate_crest = {
 s={4},
 ws=3,
 hs=2,
 xo=-12,
 yo=-8,
}
phinstate_fall_wax = phinstate_jump_wane
phinstate_fall_full = phinstate_jump_full
phinstate_dive_full = {
 s={7},
 ws=2,
 hs=3,
 xo=-4,
 yo=-16,
}
phinstate_dive_wane = {
 s={1},
 ws=3,
 hs=3,
 xo=-12,
 yo=-16,
}
phinstate_return = {
 s={4},
 ws=3,
 hs=2,
 xo=-12,
 yo=-8,
}
phinstate_rise_wax = phinstate_dive_wane
phinstate_rise_full = phinstate_dive_full

phinstate_error = {
 s={0},
 ws=1,
 hs=2,
}

-- coordinates are the notional
-- center point of the dolphin.
-- many states are off-center.
toyphin = {
 x=-12,
 y=64,
 dy=0,
 state=phinstate_nrm
}
mknew(toyphin)

function toyphin:update()
 local x, y, dy, splash = self.x, self.y, self.dy, self.splasher
 -- entry mode?
 if not self.entered then
  x += 1
  self.entered = x >= 16
 elseif self.exiting then
  if x > 128 then
   self.exited = true
  else
   x += 1
  end
 end

 -- button handling
 if self.entered and not self.exiting then
  if y >= 61 and y <= 67 then
   if (btn(2)) and dy < 1 then
    splash:jump_splash(x)
    dy=-3.8
   elseif (btn(3)) and dy > -1 then
    splash:dive_splash(x)
    dy=3.8
   end
  else
   dy += (btn(3) and 0.125 or 0) - (btn(2) and 0.125 or 0)
  end
 end

 if (y > 64) dy -= 0.3
 if (y < 64) dy += 0.3

 local new_y = y + dy
 if new_y  <= 64 and y > 64 then
  -- surfacing
  splash:surfacing_splash(x, -dy, btn(2) and (dy > -3.8))
  if btn(2) then
   -- maybe boost
   if dy > -3.8 then
    new_y = 64 + ((dy + y - 64)/dy * -3.8) 
    dy = -3.8
   else
    dy = (dy - 7.6) / 3
   end
  else
   -- brake
   if dy > -0.75 then
    --stabilize
    new_y = 64
    dy = 0
   else
    dy /= 2
   end
  end
 elseif new_y >= 64 and y < 64 then
  -- landing
  splash:landing_splash(x, dy, btn(3) and (dy < 3.8))
  if btn(3) then
   -- maybe boost
   if dy < 3.8 then
    new_y = 64 - ((dy - y + 64)/dy * 3.8)
    dy = 3.8
   else
    dy = (7.6 + dy) / 3
   end
  else
   --brake
   if dy < 0.75 then
    --stabilize
    new_y = 64
    dy = 0
   else
    dy /= 2
   end
  end
 end
 y=new_y

 local wet, st = y > 64, phinstate_error
 if dy < -2.5 then
  st = wet and phinstate_rise_full or phinstate_jump_full
 elseif dy <= -1.5 then
  st = wet and phinstate_rise_wax or phinstate_jump_wane
 elseif dy < 1.5 then
  -- handle idle special case later
  st = wet and phinstate_return or phinstate_crest
 elseif dy <= 2.5 then
  st = wet and phinstate_dive_wane or phinstate_fall_wax
 else
  st = wet and phinstate_dive_full or phinstate_fall_full
 end

 if (y == 64 and dy == 0) st = phinstate_nrm
 -- test mode
 --if (btn(5)) self.exiting = true
 self.x, self.y, self.dy, self.state = x, y, dy, st
end

-- hitbox for current state
function toyphin:box()
 local st = self.state
 return {self.x + st.xo, self.y + st.yo, st.ws * 8, st.hs * 8}
end

function toyphin:draw()
 local st, y = self.state, self.y
 if (st.idle) y += wave()
 spr(st.s[1+(((t()<<1)&0x0.FFFF*#st.s)&0x7FFF)], self.x + st.xo, y + st.yo, self.state.ws, self.state.hs)
end

-->8 word target

wordtarget = {
 x = 129,
 y = 60,
 str = "GOOD TOY!",
 on_hit = nop,
}
mknew(wordtarget, function(x)
 poke(0x5f58, 0x81)
 x.w = print(x.str or wordtarget.str, 0, -9999)-1
end)

function collides(b1, b2)
 if (b1[1] > b2[1] + b2[3]) return false
 if (b1[1] + b1[3] < b2[1]) return false
 if (b1[2] > b2[2] + b2[4]) return false
 return not (b1[2] + b1[4] < b2[2])
end

function wordtarget:update()
 if collides({self.x, self.y, self.w, 7}, self.phin:box()) then
  self:on_hit()
  return true
 end
 self.x -= 1
 return self.x < -self.w
end

function wordtarget:draw()
 poke(0x5f58, 0x81)
 -- debug: show hitbox
 --rect(self.x-1, self.y-1, self.x+self.w+1, self.y + 8, 0x10F1.5a5a)
 print(self.str, self.x+1, self.y+1, 0x100b)
 print(self.str, self.x, self.y, 0x100a)
end

-->8
-- arcade mode

-- palette use:
-- 0: shallow sea blue (1)
-- 1: black (for sprites)
-- 2: dolphin shading
-- 3: azure water, maybe score display? (140)
-- 4, 5: unassigned, layer-specific
-- 6: dolphin specular highlights
-- 7: dolphin white paint
-- 8, 9: unassigned, layer specific
-- 10: word primary (yellow 10?)
-- 11: word shadow (wood 132?)
-- 12: dolphin eye
-- 13: common sky color
-- 14: dolphin primary color
-- 15: highlight white (all layers)
--
-- dolphin colors are different
-- between zones; correlated.
-- wave, text, and black colors
-- are the same between zones.
-- other colors are for
-- elements that only ever
-- appear in one zone.
--
-- TODO: consider changing sky
-- colors in different stages;
-- document what colors those
-- are (nrm_pal) if so.
game_nrm_pal = {
 [0] = 1, 0, 2, 140, 4, 5, 7, 7, 8, 9, 10, 132, 12, 12, 14, 7
}

-- undersea palette local decisions:
-- 4: deeper sea blue (129)
game_uw_pal = {
 [0]=1, 0, 130, 140, 129, 5, 141, 13, 8, 9, 10, 132, 131, 12, 141, 7
}

function setup_arcade_pal()
 -- per-line color mode
 poke(0x5f5f, 0x10)
 -- rows 72 and lower: sea
 memset(0x5f79,0xff,7)
 pal()
 pal(game_nrm_pal, 1)
 pal(game_uw_pal, 2)
end

-- global wave amplitude clock
-- wave per 2 seconds
-- optional toff: offset. at
-- toff==0 draw directly under
-- the dolphin
function wave(toff)
 toff = toff or 0
 return 2.5 * sin((t()+toff)>>1)
end

sea = {}
mknew(sea)

function sea:draw()
 local w = wave()
 rectfill(0, 66+w, 128, 77+w, 0)
 poke2(0x5f78, 0xff00.00ff <<> w)
 rectfill(0, 78+w, 128, 89+w, 0x1040.a842)
 rectfill(0, 90+w, 128, 97+(w>>1), 0x1004.e169)
 rectfill(0, 98+(w>>1), 128, 104+(w>>2), 0x1004.a842)
 rectfill(0, 104+(w>>2), 128, 110+(w>>2), 0x1004)
 rectfill(0, 111+(w>>2), 128, 118+(w>>3), 0x1041.e169)
 rectfill(0, 119+(w>>3), 128, 124+(w>>3), 0x1041.a842)
 rectfill(0, 125+(w>>3), 128, 128, 0x1001)
end

arcade_level = {
 score=0,
 wordcount=15,
 wordwait = 90,
}
mknew(arcade_level, function(x)
 x.phin = toyphin.new{splasher=x}
 -- TODO: decent looking sky and sea
 x.sky = bg.new{c=13}
 x.sea = sea.new()
 x.bg = event_list.new()
 x.fg = event_list.new()
 x.words = event_list.new()
 -- TODO: score renderer
 x.t0 = t()
 x.wordremain = x.wordcount or arcade_level.wordcount
 x.wordtimer = x.wordwait or arcade_level.wordwait

 x.v = view.of{
  x.sky,
  x.sea,
  x.waves,
  {draw=function()
   poke(0x5f58, 0)
   local s = tostr(x.score)
   print(s,1,2,3)
   print(s,2,1,3)
   print(s,0,1,3)
   print(s,1,0,3)
   print(s,1,1,15)
  end},
  x.bg,
  x.phin,
  x.fg,
  x.words,
 }

 x.s = scootbox.new()
 x.s:push(x.v)

 -- TODO: fade in level music

 -- Switch to small font
 -- (Dogica is too large to ever miss!)
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    poke(0x5f58,0x81) -- enable custom font
end)

function arcade_level:update()
 if self.phin.entered then
  if self.wordtimer <= 0 and self.wordremain > 0 then
   self:spawn_word()
   self.wordtimer = self.wordwait
   self.wordremain -= 1
  end
  self.wordtimer -= 1
 end
 if self.wordremain <= 0 and self.words.next == nil then
  self.phin.exiting = true
 end
 if self.phin.x > 90 then
  -- TODO: done callback
  self:on_level_done()
 end
 -- TODO: timers, word loop,
 -- level state tracking and
 -- progression, etc.
 self.s:update()
end

function arcade_level:spawn_word()
 -- TODO: basically everything.
 --  word lists
 --  pattern generator 
 self.words:push_back(wordtarget.new{
  y=32+rnd(64), -- real game uses pattern generator!
  phin=self.phin,
  on_hit = function(word)
   self:word_hit(word)
  end,
 })
end

function arcade_level:word_hit(word)
 self.score += 1
 -- TODO: sfx
 -- TODO: sparkle
end

function arcade_level:draw()
 setup_arcade_pal()
 self.s:draw()
end

function arcade_level:draw_splash(x, force)
 if (force < 0.5) return
 local n = (force + rnd(force)) & 0x7FF
 for i=0,n do
  local d = droplet.new{x=x, force=force, y=72+wave(), f=i/n-0.5}
  if rnd() < 0.5 then
   self.bg:push_back(d)
  else
   self.fg:push_back(d)
  end
 end
end

function arcade_level:dive_splash(x)
 -- TODO: sfx, vfx for dive input
 self:draw_splash(x, 3.8)
end

function arcade_level:jump_splash(x)
 -- TODO: sfx, vfx for jump input
 self:draw_splash(x, 3.8)
end

function arcade_level:surfacing_splash(x, force, harder)
 -- TODO: sfx, vfx for surfacing from a dive
 self:draw_splash(x, force)
end

function arcade_level:landing_splash(x, force, harder)
 -- TODO: sfx, vfx for landing from a jump
 self:draw_splash(x, force)
end

splashcols = {0x1003, 0x103d.a5a5}
droplet = {}
mknew(droplet, function(d)
 d.dx = (d.f * d.force >> 2) - 0.75
 d.x += 16 * d.f
 d.dy = -rnd(d.force*0.66)
 d.r = 1 + rnd(0.75 + (d.force >> 4))
 d.c = rnd(splashcols)
end)

function droplet:update()
 self.x += self.dx
 self.y += self.dy
 self.dy += 0.3
 return self.y >72 + wave()
end

function droplet:draw()
 circfill(self.x, self.y, self.r, self.c)
 local r2 = self.r >> 1
 pset(self.x+r2, self.y-r2, 0x100F)
end

-->8
-- game sequencer
__gfx__
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