better ceiling/floor placement mechanic and better moving mechanic

src/main.lua

@@ -272,7 +272,7 @@ local function placebuf(buf, x, y, z)
         place("down")
     end
 end
-local function getnearestunplaced(buf, pbuf, cx,cy,cz,co, sx,sz, setceiling)
+local function getnearestunplaced(buf, pbuf, cx,cy,cz,co, sx,sz)
     local distance = math.huge
     local selected = nil
 
@@ -280,7 +280,7 @@ local function getnearestunplaced(buf, pbuf, cx,cy,cz,co, sx,sz, setceiling)
         for y=1,sz,1 do
             local needplace = buf[posasstring(x,cy,y)]
             if pbuf[posasstring(x,cy,y)] then needplace = 0 end -- already placed
-            needplace = setceiling and (needplace == 2 or needplace == 1) or needplace == 1
+            needplace = needplace == 1
             if needplace then -- needs to be placed, calculate distance
                 local cd = math.abs(y-cz)+math.abs(x-cx) -- raw distance (amount of blocks between)
                 if cd < distance then
@@ -305,7 +305,7 @@ local function center(direction, wanted)
     return false
 end
 local function moveto(x,y,cx,cz,direction)
-    while x ~= cx or y ~= cz do
+    while x ~= cx do
         if cx < x then -- x
             center(direction)
             direction = 0
@@ -318,7 +318,8 @@ local function moveto(x,y,cx,cz,direction)
             cx = cx - 1
             move("back")
         end
-
+    end
+    while y ~= cz do
         if y > cz then -- z
             if center(direction, 1) then move("right") end
             cz = cz + 1
@@ -345,7 +346,7 @@ local function printdes(buf, dimensions)
         for _=1,3,1 do -- build walls
             local pbuf = {}
             while true do
-                local target = getnearestunplaced(buf, pbuf, cx,cy,cz,nil, dimensions["x"],dimensions["z"], false)
+                local target = getnearestunplaced(buf, pbuf, cx,cy,cz,nil, dimensions["x"],dimensions["z"])
                 if not target then break end
 
                 reset() -- render current work
@@ -372,39 +373,44 @@ local function printdes(buf, dimensions)
                 pbuf[posasstring(cx,cy,cz)] = true
             end
             move("up")
-            --[[for cz=1,dimensions["z"],1 do
-                for cx=1,dimensions["x"],1 do
-                    placebuf(buf, cx, cy, cz)
-                    move("forward")
-                end
-                -- return to standard pos but +1 to z
-                --move("back")
-                move("right")
-                move("forward")
-                move("right")
-                for _=1,dimensions["x"],1 do
-                    move("forward")
-                end
-                move("right")
-                move("right")
-            end
-            -- return to standard pos but +1 to y
-            move("left")
-            for _=1,dimensions["z"],1 do
-                move("forward")
-            end
-            move("right")
-            move("up")]]--
         end
         -- build ceiling/floor
+        local pbuf = {}
+        local cbuf = {}
         for _cz=1,dimensions["z"],1 do
             for _cx=1,dimensions["x"],1 do
-                cx,cz,direction = moveto(_cx,_cz,cx,cz,direction)
                 if buf[posasstring(_cx,cy,_cz)] ~= 2 then
-                    place("down")
+                    cbuf[posasstring(_cx,0,_cz)] = 1
+                else
+                    cbuf[posasstring(_cx,0,_cz)] = 0
                 end
             end
         end
+        while true do
+            local target = getnearestunplaced(cbuf, pbuf, cx,0,cz,nil, dimensions["x"],dimensions["z"])
+            if not target then break end
+
+            reset() -- render current work
+            for x=1,dimensions["x"],1 do
+                for z=1,dimensions["z"],1 do
+                    local currentbuf = pbuf[posasstring(x, cy, z)]
+                    term.setCursorPos(x, z)
+                    if currentbuf then -- wall
+                        term.blit(" ", colors.toBlit(colors.white), colors.toBlit(colors.white))
+                    elseif currentbuf == false or currentbuf == nil then -- nothing
+                        term.blit("\127", colors.toBlit(colors.gray), colors.toBlit(colors.black))
+                    end
+                end
+            end
+            term.setCursorPos(cx,cz)
+            term.blit(" ", colors.toBlit(colors.red), colors.toBlit(colors.red))
+            term.setCursorPos(target[1],target[2])
+            term.blit(" ", colors.toBlit(colors.lime), colors.toBlit(colors.lime))
+
+            cx,cz,direction = moveto(target[1],target[2],cx,cz,direction)
+            place("down")
+            pbuf[posasstring(cx,cy,cz)] = true
+        end
         -- return to standard pos but +1 to y
         cx,cz,direction = moveto(1,1,cx,cz,direction)
         move("up")