Don't track pit contents

chameleonic.p8

@@ -329,10 +329,9 @@ function level:draw()
   local pr=self._pits[_mix(px+1,py)]
 
   spr(pit.s,px,py)
-  if pit.contents then
+  if pit.full then
    pal(pitpal)
    palt(0,false)
-   --spr(pit.contents,pit.px,pit.py)
    spr(79,pit.px,pit.py)
    pal()
    pal(normpal)
@@ -363,10 +362,10 @@ function level:update()
 
   if #crate.todo==0 then 
    local pit=self._pits[_mix(crate.mx,crate.my)]
-   if pit and not pit.contents then
+   if pit and not pit.full then
     add(remove,cix)
     crate.dead=true
-    pit.contents=crate.s
+    pit.full=true
    end
   end
  end
@@ -499,7 +498,7 @@ end
 
 function level:get_open_pit(mx,my)
  local pit=self._pits[_mix(mx,my)]
- if (pit and not pit.contents) return pit
+ if (pit and not pit.full) return pit
 end
 
 function level:spawn_exit()