diff --git a/src/main.lua b/src/main.lua
index 9352194..d0faf44 100644
--- a/src/main.lua
+++ b/src/main.lua
@@ -384,10 +384,13 @@ local function render(buf, pbuf, cx,cy,cz, tx,tz, sx,sz, shouldsetlist,invertsli
         1,
     }
 
+    local tsx,tsy = term.getSize()
+    local camx,camy = cx+tsx/2,cz+tsy/2
+
     reset()
-    for x=1,sx,1 do
-        for z=1,sz,1 do
-            local currentbuf = pbuf[posasstring(x, cy, z)]
+    for x=1+camx,sx+camx,1 do
+        for z=1+camy,sz+camy,1 do
+            local currentbuf = pbuf[posasstring(x-camx, cy, z-camy)]
             term.setCursorPos(x, z)
             if currentbuf then -- wall
                 term.blit(" ", colors.toBlit(colors.white), colors.toBlit(colors.white))