remove broken animator impl. text springs in.

there's something wrong with mknew's attempt to do inheritance. I need to figure out why it's wrong, but for now I think the animator and linked list are just noise.

vacation.p8

@@ -23,7 +23,7 @@ __lua__
 -- dogica font by roberto mocci
 -- https://www.dafont.com/es/dogica.font
 --
--- converted by josé aular
+-- converted by josれた aular
 -- https://jaular.itch.io/pico-8-dogica-font
 
 -- tab 0: library
@@ -80,81 +80,6 @@ function outer_or_each_opt(t, mname)
  end)
 end
 
--------------------------------
--- linked_list
--------------------------------
--- intrusive singly-linked list.
--- cannot be nested!
-linked_list = {is_linked_list=true}
-mknew(linked_list, function(x)
-  x.next=nil
-  x.tail=x
- end)
-
-function linked_list:push_back(x)
- self.tail.next = x
- self.tail = x
-end
-
-function linked_list:push_front(x)
- if (not self.next) self.tail = x
- x.next = self.next
- self.next = x
-end
-
--- vore eats another linked list
--- by appending its contents.
--- the ingested linked is empty.
-function linked_list:vore(x)
- if (not x.next) return
- self.tail.next = x.next
- self.tail = x.tail
- x.next = nil
- x.tail = x
-end
-
--- strip calls f(x) for each
--- node, removing each node for
--- which f(x) returns true. it
--- returns the new tail; nil
--- if the list is now empty.
-function linked_list:strip(f)
- local p, n = self, self.next
- while n do
-  if f(n) then
-   p.next = n.next
-  else
-   p = n
-  end
-  n = n.next
- end
- self.tail = p
- return p
-end
-
--- optimized special case -
--- could be done with strip but
--- this avoids extra function
--- calls and comparisions since
--- draw isn't allowed to kill
--- the item
-function linked_list:draw()
- local n = self.next
- while n do
-  n:draw()
-  n = n.next
- end
-end
-
-
-function linked_list:pop_front()
- local ret = self.next
- if (not ret) return
- self.next = ret.next
- if (not ret.next) ret.tail = nil
- return ret
-end
-
 -------------------------------
 -- view
 -------------------------------
@@ -212,22 +137,6 @@ function bg:draw()
  fillp(oldfp)
 end
 
--------------------------------
--- animator
--------------------------------
--- animator is a linked list of
--- temporary drawables. a
--- temporary drawable is dropped
--- when its :update returns
--- a non-false value.
--------------------------------
-animator = linked_list.new{}
-mknew(animator)
-
-function animator:update()
- self:strip(function(x) x:update() end)
-end
-
 -->8
 -- setup and p8 entry points
 
@@ -235,7 +144,7 @@ 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)
- mainview = titlescreen
+ mainview = newtitle()
 end
 
 function _update()
@@ -258,11 +167,36 @@ txtbox = {
 }
 mknew(txtbox)
 
+function txtbox:update() end
+
 function txtbox:draw()
  poke(0x5f58, self.mode)
  print(self.text, self.x, self.y, self.col)
 end
 
+springup = {
+ from = 128,
+ to = 0,
+ frames=60,
+ f = 0,
+}
+mknew(springup)
+
+function springup: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 springup:draw()
+ self.v:draw()
+end
 
 -->8
 -- sprite rendering
@@ -272,14 +206,18 @@ end
 
 -->8
 -- title screen
-titlescreen = view.of{
+function newtitle()
+ return view.of{
   bg.new{c=1},
- txtbox.new{
+  springup.new{
-  x=10,
+   v=txtbox.new{
-  y=35,
+    x=30,
-  text="tEXTBOX tEST",
+    text="sPRING tEST",
    }, 
-}
+   to=16,
+  }
+ }
+end
 
 -->8
 -- zonk mode