add camera logic

src/main.lua

@@ -74,12 +74,14 @@ local function newdesign()
         y = 1
     }
     local currentfloor = 1
+    local camx,camy = 0,0
+
 
     while true do
         -- render buf
         reset()
-        for x=1,dimensions["x"],1 do
+        for x=1+camx,dimensions["x"]+camx,1 do
-            for z=1,dimensions["z"],1 do
+            for z=1+camy,dimensions["z"]+camy,1 do
                 local currentbuf = buf[posasstring(x, currentfloor, z)]
                 if currentbuf then
                     term.setCursorPos(x, z)
@@ -98,6 +100,8 @@ local function newdesign()
         -- user input
         local event = table.pack(os.pullEvent())
         if event[1] == "mouse_click" or event[1] == "mouse_drag" then
+            event[3] = event[3]+camx
+            event[4] = event[4]+camy
             if event[3] <= dimensions["x"] and event[4] <= dimensions["z"] then
                 if event[2] == 1 then -- left button, set
                     buf[posasstring(event[3], currentfloor, event[4])] = true
@@ -107,7 +111,8 @@ local function newdesign()
                 end
             end
         end
-        if event[1] == "key" and keys.getName(event[2]) == "leftCtrl" then -- menu
+        if event[1] == "key" then
+            if keys.getName(event[2]) == "leftCtrl" then -- menu
                 local action = selopt({
                     "Save",
                     "Load",
@@ -170,6 +175,25 @@ local function newdesign()
                     dimensions["z"] = zsize
                 end
             end
+            if keys.getName(event[2]) == "q" and currentfloor < dimensions["y"] then -- go up
+                currentfloor = currentfloor + 1
+            end
+            if keys.getName(event[2]) == "e" and currentfloor > 1 then -- go down
+                currentfloor = currentfloor - 1
+            end
+            if keys.getName(event[2]) == "w" and camy > 1 then -- pan up
+                camy = camy - 1
+            end
+            if keys.getName(event[2]) == "s" and camy < dimensions["z"] then -- pan down
+                camy = camy + 1
+            end
+            if keys.getName(event[2]) == "a" and camx > 1 then -- pan left
+                camx = camx - 1
+            end
+            if keys.getName(event[2]) == "d" and camx < dimensions["x"] then -- pan right
+                camx = camx + 1
+            end
+        end
     end
 end