Golf tostring()

Prototype tutorial starting at level 10 using existing mechanics.

Reviewed-on: #12
Co-authored-by: Kistaro Windrider <kistaro@gmail.com>
Co-committed-by: Kistaro Windrider <kistaro@gmail.com>

chameleonic.p8

@@ -53,21 +53,18 @@ function linefill(ax,ay,bx,by,r,c)
  local dx,dy=bx-ax,by-ay
  -- avoid overflow
  -- credits: https://www.lexaloffle.com/bbs/?tid=28999
- local d=max(abs(dx),abs(dy))
+ local n,d=_mnmx(abs(dx),abs(dy)) 
- local n=min(abs(dx),abs(dy))/d
+ n/=d
  d*=sqrt(n*n+1)
  if(d<0.001) return
  local ca,sa=dx/d,-dy/d
    
  -- polygon points
- local s={
+ local spans={}
-  {0,-r},{d,-r},{d,r},{0,r}
+ local function calcxy(u,v) return ax+u*ca+v*sa,ay-u*sa+v*ca end
- }
+ local x0,y0=calcxy(0,r)
- local u,v,spans=s[4][1],s[4][2],{}
+ for s in all{{0,-r},{d,-r},{d,r},{0,r}} do
- local x0,y0=ax+u*ca+v*sa,ay-u*sa+v*ca
+  local x1,y1=calcxy(unpack(s))
- for i=1,4 do
-  local u,v=s[i][1],s[i][2]
-  local x1,y1=ax+u*ca+v*sa,ay-u*sa+v*ca
   local _x1,_y1=x1,y1
   if(y0>y1) x0,y0,x1,y1=x1,y1,x0,y0
   local dx=(x1-x0)/(y1-y0)
@@ -78,11 +75,8 @@ function linefill(ax,ay,bx,by,r,c)
   for y=y0\1+1,min(y1\1,127) do
    -- open span?
    local span=spans[y]
-   if span then
+   if (span) rectfill(x0,y,span,y)
-    rectfill(x0,y,span,y)
+   spans[y]=x0
-   else
-    spans[y]=x0
-   end
    x0+=dx
   end
   x0,y0=_x1,_y1
@@ -92,19 +86,14 @@ end
 function _apply(x,ts,a)
  local t=deli(ts,1)
  for k,v in pairs(t) do
-  if k=="update" then
+  if (k!="update") x[k]=v 
-   --
-  else
-   x[k]=v
-  end
  end
 
  if (t and t.update and not t.update(x,a)) add(ts,t,1)
 end
 
 function sgn0(x)
- if (x==0) return x
+ return x!=0 and sgn(x) or 0
- return sgn(x)
 end
 
 function _mnmx(x,y)
@@ -114,13 +103,14 @@ end
 
 
 function _rast(
- x0,y0,x1,y1
+ xs,ys,x0,y0,x1,y1
 )
- local dx=abs(x1-x0)
+ local function _add()
- local dy=abs(y1-y0)
+  local n=#xs
- local x=x0
+  if (n==0 or xs[n]!=x0 or ys[n]!=y0) add(xs,x0) add(ys,y0)
- local y=y0
+ end
 
+ local dx,dy=abs(x1-x0),abs(y1-y0)
  local sx=-1
  local sy=-1
  if (x0<x1) sx=1
@@ -129,27 +119,22 @@ function _rast(
  local done=false,err
  if dx>dy then
   err=dx/2.0
-  return function()
+  while x0!=x1 do
-   if (done) return 
+   _add()
-   if (x==x1) done=true return x1,y1
-   local oldx,oldy=x,y
    err-=dy
-   if (err<0) y+=sy err+=dx
+   if (err<0) y0+=sy err+=dx
-   x+=sx
+   x0+=sx
-   return oldx,oldy
   end
  else
   err=dy/2.0
-  return function()
+  while y0!=y1 do
-   if (done) return
+   _add()
-   if (y==y1) done=true return x1,y1
-   local oldx,oldy=x,y
    err-=dx
-   if (err<0) x+=sx err+=dy 
+   if (err<0) x0+=sx err+=dy 
-   y+=sy
+   y0+=sy
-   return oldx,oldy
   end
  end
+ _add()
 end
 
 -->8
@@ -158,74 +143,48 @@ kbd={}
 add(real_modules,kbd)
 function kbd:init()
  self.real=btn()
- self.down=0
+ self.state={btn=0}
 end
 
 function kbd:update()
  -- figure out what keys are _really_ pressed
- local now_real=btn()
+ local now_real,was_real=btn(),self.real
- local was_real=self.real
  self.real=now_real
 
  -- add keys that are really pressed 
  -- if they weren't really pressed before
  -- (they may have been force-
  --  released by :release())
- local real_pressed=(~was_real)&now_real
+ local real_pressed=~was_real&now_real
 
- local now_down=(self.down&now_real)|real_pressed
+ local state=self.state
- local was_down=self.down
+ local now_down=state.btn&now_real|real_pressed
- self.down=now_down
+ local was_down=state.btn
 
  -- deduce pressed/released by changes in down
- local pressed=(~was_down)&now_down
+ state.btn,state.btnp,state.btnr=
- local released=(~now_down)&was_down
+  now_down,
-
+  ~was_down&now_down,
- self.pressed=pressed
+  ~now_down&was_down
- self.released=released
 end
 
-function kbd:btn(i)
+for _kbdi in all(split"btn,btnp,btnr") do
- return self.down&(1<<i)!=0
+ kbd[_kbdi]=function(self,i,t) return 1<<i&self.state[_kbdi]!=0 end
-end
-
-function kbd:btnp(i)
- return self.pressed&(1<<i)!=0
-end
-
-function kbd:btnr(i)
- return self.released&(1<<i)!=0
 end
 
 function kbd:release(i)
- self.down&=~(1<<i)
+ self.state.btn&=~(1<<i)
 end
 
 function tostring(any)
- if type(any)=="function" then 
-     return "function" 
- end
- if any==nil then 
-     return "nil" 
- end
- if type(any)=="string" then
-     return any
- end
- if type(any)=="boolean" then
-     if any then return "true" end
-     return "false"
- end
  if type(any)=="table" then
-     local str = "{ "
+  local str = "{ "
-     for k,v in pairs(any) do
+  for k,v in pairs(any) do
-         str=str..tostring(k).."->"..tostring(v).." "
+      str=str..tostring(k).."->"..tostring(v).." "
-     end
+  end
-     return str.."}"
+  return str.."}"
  end
- if type(any)=="number" then
+ return tostr(any)
-     return ""..any
- end
-  return "unknown" -- should never show
 end
 
 -->8
@@ -305,7 +264,7 @@ function level:advance()
  self:reinit(self.ix+1)
 end
 
-pitpal = {[0]=1,[7]=0}
+pitpal = {[0]=1,[7]=0,[6]=1,[4]=1}
 function level:draw()
  cls(1)
  pal(1,0)
@@ -450,7 +409,7 @@ function level:reanchor()
   local old=anch_old[k]
   if old then
    anch_new[k]=old
-   old.ax,old.ay,old.adx,old.ady=new.ax,new.ay,new.adx,new.ady
+   old.ax_old,old.ay_old,old.ax,old.ay,old.adx,old.ady=old.ax,old.ay,new.ax,new.ay,new.adx,new.ady
    old.dropped=nil
   end
  end
@@ -459,6 +418,17 @@ function level:reanchor()
  for k,_ in pairs(self._anch) do
   add(self._anch_keys,{key=k})
  end
+ shellsort(self._anch_keys)
+ for point in self:anchor_points() do
+  if point.ax_old!=nil then
+   if (player.rope!=nil) player.rope:be_pushed_by(point,point.ax_old,point.ay_old)
+   point.ax_old=nil
+   point.ay_old=nil
+  end
+ end
+ for point in self:anchor_points() do
+  assert(not point.dropped)
+ end
 
  if (player.rope!=nil) player.rope:relax()
 end
@@ -601,6 +571,9 @@ function level:can_move(
  if is_player and self:win_at(mx0+dmx,my0+dmy) then
   return true 
  end
+ if is_player and self:get_open_pit(mx0+dmx,my0+dmy) then
+  return wrongbleep:adequately_warned()
+ end
 
  if self:mcoll(mx0+dmx,my0+dmy) then
   return false
@@ -614,13 +587,13 @@ function level:can_move(
  if player.rope then
   local chk=false
   if dmx==0 and dmy==-1 then
-   chk=player.rope:collide_mrect(mx0,my0-1,1,2,exclude_src,exclude_dst)
+   chk=player.rope:collide_mrect(mx0+0.4,my0-0.8,0.2,1.6,exclude_src,exclude_dst)
   elseif dmx==0 and dmy==1 then
-   chk=player.rope:collide_mrect(mx0,my0,1,2,exclude_src,exclude_dst)
+   chk=player.rope:collide_mrect(mx0+0.4,my0+0.2,0.2,1.6,exclude_src,exclude_dst)
   elseif dmx==-1 and dmy==0 then
-   chk=player.rope:collide_mrect(mx0-1,my0,2,1,exclude_src,exclude_dst)
+   chk=player.rope:collide_mrect(mx0-0.8,my0+0.4,1.6,0.2,exclude_src,exclude_dst)
   elseif dmx==1 and dmy==0 then
-   chk=player.rope:collide_mrect(mx0,my0,2,1,exclude_src,exclude_dst)
+   chk=player.rope:collide_mrect(mx0+0.2,my0+0.4,1.6,0.2,exclude_src,exclude_dst)
   end
 
   if (chk) return false
@@ -757,7 +730,7 @@ function player:update()
 
     self.rope=rope:new(
      x+0.5-dx*0.5,y+0.5-dy*0.5,
-     self.x+0.5,self.y+0.1,
+     self.x+0.5,self.y+0.5,
      level:get_latch(dx,dy,x*8,y*8)
     )
     
@@ -768,17 +741,28 @@ function player:update()
     }}
    elseif kbd:btnp(5) then
     if self.rope!=nil then
-     if (not self.rope:tug()) wrongbleep:bleep(7)
+     if (not self.rope:tug()) wrongbleep:bleep(9)
     end
    end
   end
  end
 
+ if self.rope then
+  self.rope:update()
+ end
  _apply(self,self.todo)
 
  if self.rope then
   self.rope:update()
-  self.rope:drag_dst(self.x+self.px/8+0.5,self.y+self.py/8+0.1)
+  if self.rope:done_reeling() then 
+   self.x=self.rope.latch.rec.mx+self.rope.latch.dx
+   self.y=self.rope.latch.rec.my+self.rope.latch.dy
+  end
+
+  local rx=self.x+self.px/8+0.5
+  local ry=self.y+self.py/8+0.5
+  -- do the hokey pokey to work out kinks in the rope
+  self.rope:drag_dst(rx,ry)
 
   local tdx,tdy=self.rope:tug_orientxy()
   if (tdx!=0) self.orientx=tdx
@@ -812,8 +796,9 @@ function player:_fall()
 end
 
 function player:draw()
- local px=self.x*8+self.px
+ local px=self.x*8+self.px+wrongbleep:vibrate()
- local py=self.y*8+self.py
+ local py=self.y*8+self.py+wrongbleep:vibrate()
+
 
  local head=1-self.orienty
 
@@ -856,17 +841,29 @@ function player:draw()
   end
  end
 
+ local rx,ry=self.x*8+self.px+1,self.y*8+self.py+2
+ if (self.orientx==1) rx+=6
+
+ if self.rope then
+  local rx_adj,ry_adj=self.rope:affected_src_xy(rx,ry)
+  if rx_adj!=nil then
+   local drx,dry=rx_adj-rx,ry_adj-ry
+   rx,ry=rx+drx,ry+dry
+   px,py=px+drx,py+dry
+  end
+ end
+
  if self.orientx==-1 then
   setpal()
   spr(16,px+6,py-2,1,1)
   spr(17,px+1,py,1,1)
-  if (self.rope and invis_level<=0.25) pal() self.rope:draw(-2,-1) setpal()
+  if (self.rope and invis_level<=0.25) pal() self.rope:draw(self.x*8+self.px+1,self.y*8+self.py+2) setpal()
   spr(head,px-3,py-3,1,1)
  else
   setpal()
   spr(16,px-6,py-2,1,1,true)
   spr(17,px-1,py,1,1,true)
-  if (self.rope and invis_level<=0.25) pal() self.rope:draw(2,-1) setpal()
+  if (self.rope and invis_level<=0.25) pal() self.rope:draw(self.x*8+self.px+7,self.y*8+self.py+2) setpal()
   spr(head,px+3,py-3,1,1,true)
  end
  pal()
@@ -905,13 +902,17 @@ function rope:done()
  return self.state.name=="done"
 end
 
+function rope:done_reeling()
+ return self.state.name=="done" and self.state.reelin
+end
+
 function rope:update()
  if self.state.name=="cast" then
   self.state.frame+=1
   if (self.state.frame>=3) self.state={name="latched"}
 
  elseif self.state.name=="latched" then
-  if (self.latch==nil) wrongbleep:bleep(3) self:destroy() return
+  if (self.latch==nil) wrongbleep:bleep(5) self:destroy() return
 
   if 
    self.latch!=nil and
@@ -931,34 +932,31 @@ function rope:update()
 
  elseif self.state.name=="destroy" then -- destroy
   self.state.frame+=1
-  if (self.state.frame>=5) self.state={name="done"}
+  if (self.state.frame>=5) self.state={name="done",reelin=self.state.reelin}
  else 
   -- done state
  end
 end
 
-function rope:destroy()
+function rope:destroy(reelin)
  if (self.state.name=="destroy" or self.state.name=="done") return
- self.state={name="destroy",frame=0}
+ self.state={name="destroy",frame=0,reelin=reelin}
 end
 
-function rope:draw(artificial_dx,artificial_dy)
+function rope:affected_src_xy(artificial_px,artificial_py)
- local points,highlight=self:_tug(true)
+ -- this is the loop from :draw but simplified
- if (self.state.name=="done") return
+ if (not self.state.reelin) return 
- local perc_to_show=1.0
- if (self.state.name=="cast") perc_to_show=self.state.frame/2
- if (self.state.name=="destroy") perc_to_show=(1.0-self.state.frame/5)^2
 
- points[#points]={x=points[#points].x+artificial_dx,y=points[#points].y+artificial_dy}
+ perc_to_show=(1.0-self.state.frame/8)^2
+ local points=self:_anchors_simplified()
+ points[#points]={x=artificial_px,y=artificial_py}
 
  local len=0
- for i=1,#points-1 do
+ for i=1,#points-1 do len+=distance(points[i],points[i+1]) end
-  len+=distance(points[i],points[i+1])
- end
  local len_to_show=perc_to_show*len
 
  local len_cumulative=0
- for i=#points-1,1,-1 do
+ for i=1,#points-1 do
   local src=points[i]
   local dst=points[i+1]
 
@@ -971,7 +969,54 @@ function rope:draw(artificial_dx,artificial_dy)
 
   if len_here>0 and dist_base>0 then
    local coef=min(len_here/dist_base,1.0)
-   dx,dy=dx*coef,dy*coef
+
+   return x+dx-dx*coef,y+dy-dy*coef
+  end
+ end
+
+ return points[1]
+end
+
+function rope:draw(artificial_px,artificial_py)
+ local points,highlight=self:_tug(true)
+ if (self.state.name=="done") return
+ local perc_to_show=1.0
+ local from_end=false
+ if (self.state.name=="cast") perc_to_show=self.state.frame/2
+ if (self.state.name=="destroy") perc_to_show=(1.0-self.state.frame/8)^2
+ if (self.state.reelin) from_end=true
+
+ points[#points]={x=artificial_px,y=artificial_py}
+
+ local len=0
+ for i=1,#points-1 do
+  len+=distance(points[i],points[i+1])
+ end
+ local len_to_show=perc_to_show*len
+
+ local len_cumulative=0
+ local ia,iz,istep=#points-1,1,-1
+ if (from_end) ia,iz,istep=1,#points-1,1
+ for i=ia,iz,istep do
+  local src=points[i]
+  local dst=points[i+1]
+
+  local x,y=dst.x,dst.y
+  local dx,dy=src.x-x,src.y-y
+
+  local len_here=len_to_show-len_cumulative
+  local dist_base=distance_dxy(dx,dy)
+  len_cumulative+=dist_base 
+
+  if len_here>0 and dist_base>0 then
+   local coef=min(len_here/dist_base,1.0)
+
+   if from_end then
+    x,y=x+dx-dx*coef,y+dy-dy*coef
+    dx,dy=dx*coef,dy*coef
+   else
+    dx,dy=dx*coef,dy*coef
+   end
 
    local color=8
    if (highlight==i) color=12
@@ -984,7 +1029,7 @@ function rope:draw(artificial_dx,artificial_dy)
  end
 
  -- draw latch
- if self.latch!=nil and self.latch.rec and perc_to_show>=1.0 then
+ if self.latch!=nil and self.latch.rec and (perc_to_show>=1.0 or from_end) then
   local x,y=self.latch.rec.px,self.latch.rec.py
   local ldx,ldy=self.latch.dx,self.latch.dy
   local color=8
@@ -1001,7 +1046,6 @@ function rope:draw(artificial_dx,artificial_dy)
  end
 
  -- debug
- --[[
  local n1=self.src
  local sy=0
  while true do
@@ -1026,7 +1070,7 @@ function rope:draw(artificial_dx,artificial_dy)
     --assert(not (adx==0 and ady==0))
 
     local c=3
-    if (n1.associated_with.dropped) c=8
+    if (n1.associated_with.dropped) c=4
     rectfill(x+2,y+2,x+4,y+4,c)
     pset(x+adx*2,y,9)
     pset(x,y+ady*2,9)
@@ -1048,7 +1092,6 @@ function rope:draw(artificial_dx,artificial_dy)
 	 pset(x+p.adx,y,11)
 	 pset(x,y+p.ady,11)
 	end
- ]]
 end
 
 function rope:drag_dst(x,y)
@@ -1067,16 +1110,18 @@ function rope:drag(n1,ax_new,ay_new)
 end
 
 function rope:relax()
- local n=self.src
+ local n0=self.src
-
  while true do
-  if (n==nil) break
+  local n1=n0.next
+  if (n1==nil) break
+  local n2=n1.next
 
-  if (n.associated_with) then 
+  if n0.ax==n1.ax and n0.ay==n1.ay then 
-   self:_drag(n,n.associated_with.ax,n.associated_with.ay)
+   n0.next=n2 
+   if (n2!=nil) n2.prev=n0
+  else
+   n0=n0.next
   end
-
-  n=n.next
  end
 
  local n0=self.src
@@ -1093,9 +1138,14 @@ function rope:relax()
    local x1,y1=n1.ax,n1.ay
    local x2,y2=n2.ax,n2.ay
 
+   if x1!=n1.associated_with.ax or y1!=n1.associated_with.ay then
+    -- printh("dragging home: "..tostring{n1.ax,n1.ay}.."->"..tostring(n1.associated_with))
+    self:_drag(n1,n1.associated_with.ax,n1.associated_with.ay)
+   end
+
    local would,x1_new,y1_new=would_stick(x0,y0,n1.associated_with,x2,y2)
    if not would and not (n1.ax==x1_new and n1.ay==y1_new) then
-    --printh("relaxing: "..tostring(n0.associated_with).."->"..tostring(n1.associated_with).."->"..tostring(n2.associated_with))
+    -- printh("relaxing: "..tostring(n0.associated_with).."->"..tostring(n1.associated_with).."->"..tostring(n2.associated_with))
     self:_drag(n1,x1_new,y1_new)
     n0=n1.prev
     n2=n1.next
@@ -1109,7 +1159,7 @@ function rope:relax()
 end
 
 function rope:_check_sane()
- if (self.state.name!="latched") return true
+ if (not self:latched()) return true
  if (level:busy()) return true
 
  local n0=self.src
@@ -1119,12 +1169,7 @@ function rope:_check_sane()
   local n1=n0.next
   if (n1==nil) break 
 
-  for qx,qy in _rast(flr(n0.ax*2),flr(n0.ay*2),flr(n1.ax*2),flr(n1.ay*2)) do
+  _rast(qxs,qys,flr(n0.ax*2),flr(n0.ay*2),flr(n1.ax*2),flr(n1.ay*2)) 
-   if not (qx==qxs[#qxs] and qy==qys[#qys]) then
-    add(qxs,qx)
-    add(qys,qy)
-   end
-  end
   n0=n1
  end
 
@@ -1183,14 +1228,22 @@ end
 
 function would_stick(x0,y0,anchor,x2,y2)
  local x1,y1=anchor.ax,anchor.ay
- if (x0>x2) x0,y0,x2,y2=x2,y2,x0,y0
 
  local dx=x2-x0
  local dy=y2-y0
 
+ -- there is no reason for an acute angle to stick around in this world
+ --[[
+ local ang0=atan2(x2-x1,y2-y1)
+ local ang2=atan2(x0-x1,y0-y1)
+ local diff=abs((ang0-ang2 + 0.5)%1-0.5)
+ if (diff<0.25) return false,x0,y0,0,0
+ ]]--
+
  local adx,ady
  local x1_new,y1_new
  if abs(dx)>abs(dy) then
+  if (x0>x2) dx,x0,y0,x2,y2=-dx,x2,y2,x0,y0
   local dprop=(x1-x0)/dx
   x1_new,y1_new=x1,y0+dprop*(y2-y0)
   ady=sgn0(y1_new-y1)
@@ -1198,25 +1251,69 @@ function would_stick(x0,y0,anchor,x2,y2)
   if (y0>y2) adx=ady
   if (y0<y2) adx=-ady
  else
+  if (y0>y2) dy,x0,y0,x2,y2=-dy,x2,y2,x0,y0
   local dprop=(y1-y0)/dy
   x1_new,y1_new=x0+dprop*(x2-x0),y1
   adx=sgn0(x1_new-x1)
   ady=0
-  if (y0>y2) ady=adx
+  if (x0>x2) ady=adx
-  if (y0<y2) ady=-adx
+  if (x0<x2) ady=-adx
  end
 
- local wouldnt=anchor.dropped or (anchor.adx==-adx or anchor.ady==-ady)
+ local wouldnt=anchor.dropped or (anchor.adx!=adx or anchor.ady!=ady)
 
  return not wouldnt,x1_new,y1_new,adx,ady
 end
 
+function rope:be_pushed_by(anchor,ax_old,ay_old)
+ local n0=self.src
+ local ax_new,ay_new=anchor.ax,anchor.ay
+ while true do
+  n1=n0.next
+  if (n1==nil) return
+
+  local nx0,ny0=n0.ax,n0.ay
+  local nx1,ny1=n1.ax,n1.ay
+
+  if
+   (ax_new==ax_old and nx0<=anchor.ax and anchor.ax<=nx1) and 
+   (ay_new==ay_old and ny0<=anchor.ay and anchor.ay<=ny1) and 
+   not (anchor.ax==nx0 and anchor.ay==ny0) and
+   not (anchor.ax==nx1 and anchor.ay==ny1) and
+
+   (_which_side(ax_old,ay_old,nx0,ny0,nx1,ny1)!= 
+    _which_side(ax_new,ay_new,nx0,ny0,nx1,ny1) 
+   ) and would_stick(nx0,ny0,anchor,nx1,ny1)
+  then
+   local nx05,ny05
+   if ax_new==ax_old then
+    nx05=anchor.ax
+    ny05=ny0+(nx05-nx0)/(nx1-nx0) * (ny1-ny0)
+    --printh("found (x): "..tostring({nx05,ny05}))
+   elseif ay_new==ay_old then
+    ny05=anchor.ay
+    nx05=nx0+(ny05-ny0)/(ny1-ny0) * (nx1-nx0)
+    --printh("found (y): "..tostring({nx05,ny05}))
+   else
+    assert(false,"wtf?")
+   end
+
+   local n05={ax=nx05,ay=ny05,associated_with=anchor,prev=n0,next=n1}
+   --printh("adding: "..tostring({nx05,ny05,anchor}))
+   n0.next=n05
+   n1.prev=n05
+   self:_drag(n05,anchor.ax,anchor.ay)
+   -- printh("dragged: "..tostring({n05.ax,n05.ay,anchor}))
+   -- printh("local: "..tostring(n0.associated_with).."->"..tostring(n05.associated_with).."->"..tostring(n1.associated_with))
+  else
+   n0=n0.next
+  end
+ end
+end
+
 function rope:_drag(n1,ax1_new,ay1_new)
  local function _sweep_radar(ax_pivot,ay_pivot,ax_far0,ay_far0,ax_far1,ay_far1)
   if (ax_far0==ax_far1 and ay_far0==ay_far1) return nil
-  local function crossed(x,y)
-   return x!=y
-  end
 
   if ax_far0==ax_far1 then
    local ax_far=ax_far0
@@ -1227,12 +1324,12 @@ function rope:_drag(n1,ax1_new,ay1_new)
     for anchor in level:anchor_points() do
      if 
       not (anchor.ax==ax_pivot and anchor.ay==ay_pivot) and
-      not (anchor.ax==ax_far0 and anchor.ay==ay_far0) and
+      -- not (anchor.ax==ax_far0 and anchor.ay==ay_far0) and
       not (anchor.ax==ax_far1 and anchor.ay==ay_far1) and
       (ax0<=anchor.ax and anchor.ax<=ax1) and 
       would_stick(ax_pivot,ay_pivot,anchor,ax_far,ay_far_new) and
-      crossed(
+      (
-        _which_side(anchor.ax,anchor.ay,ax_pivot,ay_pivot,ax_far,ay_far_old),
+        _which_side(anchor.ax,anchor.ay,ax_pivot,ay_pivot,ax_far,ay_far_old) !=
         _which_side(anchor.ax,anchor.ay,ax_pivot,ay_pivot,ax_far,ay_far_new)
       )
      then
@@ -1250,12 +1347,12 @@ function rope:_drag(n1,ax1_new,ay1_new)
     for anchor in level:anchor_points() do
      if 
       not (anchor.ax==ax_pivot and anchor.ay==ay_pivot) and
-      not (anchor.ax==ax_far0 and anchor.ay==ay_far0) and
+      -- not (anchor.ax==ax_far0 and anchor.ay==ay_far0) and
       not (anchor.ax==ax_far1 and anchor.ay==ay_far1) and
       would_stick(ax_pivot,ay_pivot,anchor,ax_far_new,ay_far) and
       (ay0<=anchor.ay and anchor.ay<=ay1) and 
-      crossed(
+      (
-        _which_side(anchor.ax,anchor.ay,ax_pivot,ay_pivot,ax_far_old,ay_far),
+        _which_side(anchor.ax,anchor.ay,ax_pivot,ay_pivot,ax_far_old,ay_far) !=
         _which_side(anchor.ax,anchor.ay,ax_pivot,ay_pivot,ax_far_new,ay_far)
       )
      then
@@ -1277,7 +1374,7 @@ function rope:_drag(n1,ax1_new,ay1_new)
   local anch=_sweep_radar(n0.ax,n0.ay,ax1_old,ay1_old,ax1_new,ay1_new)
   if (anch==nil) break
   local n05={ax=anch.ax,ay=anch.ay,associated_with=anch,prev=n0,next=n1}
-  --printh("creating post: "..tostring(n0.associated_with).."->"..tostring(n05.associated_with).."->"..tostring(n1.associated_with))
+  -- printh("creating pre: "..tostring(n0.associated_with).."->"..tostring(n05.associated_with).."->"..tostring(n1.associated_with))
   n0.next=n05
   n1.prev=n05
   n0=n05
@@ -1289,7 +1386,7 @@ function rope:_drag(n1,ax1_new,ay1_new)
   local anch=_sweep_radar(n2.ax,n2.ay,ax1_old,ay1_old,ax1_new,ay1_new)
   if (anch==nil) break
   local n15={ax=anch.ax,ay=anch.ay,associated_with=anch,prev=n1,next=n2}
-  --printh("creating post: "..tostring(n1.associated_with).."->"..tostring(n15.associated_with).."->"..tostring(n2.associated_with))
+  -- printh("creating post: "..tostring(n1.associated_with).."->"..tostring(n15.associated_with).."->"..tostring(n2.associated_with))
   n1.next=n15
   n2.prev=n15
   n2=n15
@@ -1341,11 +1438,6 @@ function rope:collide_mrect(mx0,my0,mw,mh,exclude_src,exclude_dst)
  local mx1,my1=mx0+mw,my0+mh
  local n0=self.src
 
- mx0+=0.4
- my0+=0.4
- mx1-=0.4
- my1-=0.4
-
  while true do
   local n1=n0.next
   if (n1==nil) return false
@@ -1356,31 +1448,30 @@ function rope:collide_mrect(mx0,my0,mw,mh,exclude_src,exclude_dst)
    if (nd==nil) return false
   end
 
+  local x1,y1,x2,y2=n0.ax,n0.ay,n1.ax,n1.ay
+  local function _line_line(x3,y3,x4,y4)
+   local denom=((y4-y3)*(x2-x1)-(x4-x3)*(y2-y1))
+
+   local ua=
+    ((x4-x3)*(y1-y3)-(y4-y3)*(x1-x3))/denom
+   if (ua<0 or ua>1) return false
+
+   local ub=
+    ((x2-x1)*(y1-y3)-(y2-y1)*(x1-x3))/denom
+   if (ub<0 or ub>1) return false
+
+   return true
+  end
+
+
   if exclude_src<=0 then
-   if (_line_line(n0.ax,n0.ay,n1.ax,n1.ay,mx0,my0,mx1,my0)) return true
+   if (_line_line(mx0,my0,mx1,my0) or _line_line(mx0,my0,mx0,my1) or _line_line(mx0,my1,mx1,my1) or _line_line(mx1,my0,mx1,my1)) return true
-   if (_line_line(n0.ax,n0.ay,n1.ax,n1.ay,mx0,my0,mx0,my1)) return true
-   if (_line_line(n0.ax,n0.ay,n1.ax,n1.ay,mx0,my1,mx1,my1)) return true
-   if (_line_line(n0.ax,n0.ay,n1.ax,n1.ay,mx1,my0,mx1,my1)) return true
   end
   exclude_src-=1
   n0=n1
  end
 end
 
-function _line_line(x1,y1,x2,y2,x3,y3,x4,y4)
- local denom=((y4-y3)*(x2-x1)-(x4-x3)*(y2-y1))
-
- local ua=
-  ((x4-x3)*(y1-y3)-(y4-y3)*(x1-x3))/denom
- if (ua<0 or ua>1) return false
-
- local ub=
-  ((x2-x1)*(y1-y3)-(y2-y1)*(x1-x3))/denom
- if (ub<0 or ub>1) return false
-
- return true
-end
-
 -->8
 -- moved here because it's complicated
 
@@ -1434,6 +1525,18 @@ function rope:_tug(hypothetically)
  end
 
  local latch=self.latch
+ if latch!=nil and latch.el=="eyehook" then
+  if (hypothetically) return ancs,0
+  player.todo={{
+   update=function(s) 
+    if s.rope==nil or s.rope:done() then
+     return true
+    end
+   end
+  }}
+  self:destroy(true)
+  return true
+ end
  if latch!=nil and latch.el=="crate" then
   local dmx,dmy=
    sgn0(latch.dx),
@@ -1569,20 +1672,20 @@ function rope:_anchors_simplified()
    x=flr(a.ax*8+0.5),y=flr(a.ay*8+0.5),
    ax=a.ax,ay=a.ay
   }
-  if a.associated_with then
+  local aw=a.associated_with
-   if (a.associated_with.adx==1) point.x-=1
+  local l=self.latch
-   if (a.associated_with.ady==1) point.y-=1
+  if aw then
-  elseif a.prev==nil and self.latch then
+   if (aw.adx==1) point.x-=1
-   if (self.latch.ax_offset<0) point.x-=1
+   if (aw.ady==1) point.y-=1
-   if (self.latch.ay_offset<0) point.y-=1
+  elseif a.prev==nil and l then
+   if (l.ax_offset<0) point.x-=1
+   if (l.ay_offset<0) point.y-=1
   end
 
-  if #points<=1 then 
+  local p0,p1=points[#points-1],points[#points]
+  if p0==nil then
    add(points,point)
-  elseif abs(
+  elseif _slope(p0,p1)==_slope(p1,point) then  -- epsilon?
-   _slope(points[#points-1],points[#points])-
-   _slope(points[#points],point)
-  )==0 then  -- epsilon?
    points[#points]=point
   else
    add(points,point)
@@ -1598,17 +1701,48 @@ wrongbleep={}
 add(real_modules,wrongbleep)
 function wrongbleep:init()
  self.duration=0
+ self.continuous=0
 end
 function wrongbleep:update()
  if (self.duration>5) self.duration=5
- if (self.duration>0) sfx(63,3) 
+ if self.duration>0 then sfx(63,3) self.continuous+=1
- self.duration=max(self.duration-1,-2)
+ else self.continuous=0 end
+ self.duration=max(self.duration-1,-4)
 end
 function wrongbleep:bleep(duration)
  self.duration+=duration or 2
 end
+function wrongbleep:vibrate(duration)
+ if (self.continuous<10) return 0
+ return (rnd()*2-1)*min(self.continuous/10,2)
+end
+function wrongbleep:adequately_warned(duration)
+ return self.continuous>45
+end
 
 
+-->8
+-- text
+level_text={by_lvl={}}
+add(real_modules,level_text)
+level_text_raw={
+ "9`9`11`\f7\#0press 🅾️ to mlem & unmlem",
+ "9`33`17`\f7\#0❎ to yoink"
+}
+function level_text:init()
+ for i=0,32 do level_text.by_lvl[i]={} end
+	for row in all(level_text_raw) do
+  if row then
+   lvlxys=split(row,"`")
+   add(level_text.by_lvl[lvlxys[1]],lvlxys)
+  end
+	end
+end
+function level_text:draw()
+ for xys in all(level_text.by_lvl[level.ix]) do
+  print(xys[4],xys[2],xys[3],6)
+ end
+end
 __gfx__
 000030000000002200003000000cc0cc0cccccccccccccccccccccccccccccccc0bb0000000000000000000000000000dddddddd000000000005000000000000
 003333300000332200333330000cc0cc0000cc0000000000000000000cc0000000bb0bb0bbbb0bbbbb0bbbbb0bbb0000dddddddd000000000000500000000000
@@ -1642,14 +1776,14 @@ eeee0000cc0440550044440000000000000000000000888888800000000000000000000000000000
 0000000077a0000000000000000000000000000000000000000000000000000000000000000000000000000000000000ddddddddddddddddddd77ddddddddddd
 00000007777a000000000000000000000000000000000000000000000000000000000000000000000000000000000000ddddddddddddddddddd00ddddddddddd
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+47766774477667744776677447766774477007744770077447700774477007744776677447766774477667744776677447700774477007744770077447700774
-77077077770770777707707777077077777007777770077777700777777007777707707777077077770770777707707777700777777007777770077777700777
+44444444444444444444444444444444444004444440044444400444444004444444444444444444444444444444444444400444444004444440044444400444
 __label__
 77777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777777
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@@ -1784,38 +1918,38 @@ __gff__
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 0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000
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