Fix syntax errors.

chameleonic.p8

@@ -659,12 +659,13 @@ end
 -- must be a free function
 --   to use as a foreach target
 function level_tug_crate(t)
+ local self=level
  local mx0,my0,dmx,dmy=unpack(t)
  local mxy0=_mix{mx0,my0}
  local existing=self._crates[mxy0]
  if (not existing) return
  
- level._crates[mxy0]=nil
+ self._crates[mxy0]=nil
  local mx1,my1=mx0+dmx,my0+dmy
  local px1,py1=mx1*8,my1*8
  existing.todo={
@@ -675,7 +676,7 @@ function level_tug_crate(t)
   {px=px1,py=py1}
  }
 
- level._crates[_mix{mx1,my1}]=existing
+ self._crates[_mix{mx1,my1}]=existing
 end
 
 -->8
@@ -1669,7 +1670,7 @@ function rope:_calc_push(
   local dmy=1 -- maybe push down?
   if anch.ady==-1 and a0.y>an.y+6 then
    -- push up
-   ay0,dmy=ay0-1,dmy=-1
+   ay0,dmy=ay0-1,-1
   elseif anch.ady!=1 or a0.y>=an.y-6 then
    return {}
   end