Restart level animation

board.lua

@@ -9,6 +9,7 @@ function board:init(w)
  self.checkpoint=nil
  self.slots={}
  self.wells={}
+ self.restart_progress=0
 
  -- board slots
  -- ...n_slots: normal
@@ -68,6 +69,10 @@ function board:deal(seed)
  end
 end
 
+function board:set_restart_progress(progress)
+ self.restart_progress=progress
+end
+
 function board:undo()
  if (not self.watcher:intercept("undo")) return
  if (self.checkpoint) self.checkpoint:apply(self)
@@ -177,6 +182,8 @@ function board:draw()
    end
   end)
  end
+
+ democrap:distort_screen(self.restart_progress)
 end
 
 slot=klass()

democrap.lua

@@ -0,0 +1,35 @@
+democrap={
+ patterns={
+  0b1111111111111111,
+  0b1111111111111111,
+  0b1111111111111111,
+  0b1111111111111111,
+  0b1111111111111111,
+  0b1111111111111111,
+  0b1111111111111111,
+  0b1111111111111100,
+  0b1111111111110000,
+  0b1111110011110000,
+  0b1111000011110000,
+  0b1111000011000000,
+  0b1111000000000000,
+  0b1100000000000000,
+  0b0000000000000000
+ }
+}
+function democrap:distort_screen(progress)
+ if (progress <= 0) return
+ progress=min(progress,1)
+ for src=0x6002,0x7fc2,64 do
+   dst=src+sin(t()+src/0x800)*(4*progress)+0.5
+   memcpy(dst,src,60)
+ end
+ local ps=democrap.patterns
+ local p=ps[1+flr(progress*#ps)] or ps[#ps]
+ fillp(p)
+ local old=@0x5333
+ poke(0x5f33,1)
+ rectfill(0,0,127,127,13)
+ poke(0x5f33,old)
+ fillp()
+end

main.p8

@@ -7,6 +7,7 @@ __lua__
 #include board_animations.lua
 #include checkpoint.lua
 #include dealer.lua
+#include democrap.lua
 #include cursor.lua
 #include layout.lua
 #include layout_hint.lua

state_gameround.lua

@@ -1,6 +1,7 @@
 state_gameround=klass()
 function state_gameround:init(watcher,ruleset)
  self.board=board:new(watcher,ruleset)
+ self.restart_frames=0
 end
 function state_gameround:enter() end
 function state_gameround:exit() end
@@ -10,6 +11,13 @@ function state_gameround:suspend() end
 
 function state_gameround:update()
  self.board:update()
+ if btn(5) then 
+  self.restart_frames+=1 
+ else 
+  self.restart_frames=0 
+ end
+ local restart_progress=self.restart_frames/60
+ self.board:set_restart_progress(restart_progress)
  if self.board:can_take_input() then
   if (btnp(0)) self.board.cursor:move_x(-1)
   if (btnp(1)) self.board.cursor:move_x(1)

tutorial.lua

@@ -1,4 +1,5 @@
 tutorial={
+ function() return watcher:new(progression[6]) end,
  function() 
   return watcher:new(progression[1], 10,{
    tutorial_grab:new(1,4),