diff --git a/main.lua b/main.lua
index 59a69b8..cd086fe 100644
--- a/main.lua
+++ b/main.lua
@@ -4,8 +4,22 @@ local utility = require "lib.utility"
 
 local window_width, window_height = love.graphics.getDimensions()
 
-local tiles, tiles_json, tile_image
-local current_text = ""
+local tiles, tiles_json, tile_image, tile_usage
+local current_text, current_prompt = "", ""
+
+local current_quad
+local current_x, current_y = 1, 1
+
+local flag_new_file -- this automatically chooses a JSON file location for new files
+
+local prompts = {
+  start_new = "Drag and drop an image or JSON file to name tiles."
+  tile_size = "Enter the tile_size for this tilesheet:",
+  enter_name = "Enter the name for this tile (leave empty to skip):",
+}
+current_prompt = prompts.start_new
+
+
 
 local get_tile_usage = function(tiles_json, tile_image)
   local image_width, image_height = tile_image:getDimensions()
@@ -24,13 +38,33 @@ local get_tile_usage = function(tiles_json, tile_image)
   return tile_usage
 end
 
+local next_unused_tile = function(tiles_json, tile_image, tile_usage)
+  local tile_size = tiles_json.tile_size
+  for x = current_x, #tile_usage do
+    for y = current_y, #tile_usage[1] do
+      if not tile_usage[x][y] then
+        current_x = x
+        current_y = y
+        current_quad = love.graphics.newQuad( (x - 1) * tile_size, (y - 1) * tile_size, tile_size, tile_size, tile_image )
+        return current_quad
+      end
+    end
+  end
+end
+
+
+
 function love.load()
   love.keyboard.setKeyRepeat(true)
 end
 
 function love.draw()
-  love.graphics.printf("Prompt:", 0, 0, window_width)
-  love.graphics.printf(current_text, 0, 20, window_width) -- lazy magic numbers
+  love.graphics.printf(current_prompt, 0, 0, window_width)
+  love.graphics.printf(current_text, 0, 20, window_width) -- lazy magic number
+
+  if current_quad then
+    love.graphics.draw(tile_image, current_quad, 0, 40) -- lazy magic number
+  end
 end
 
 function love.textinput(character)
@@ -46,18 +80,49 @@ function love.keypressed(key)
       current_text = current_text:sub(1, byteoffset - 1)
     end
   elseif key == "enter" then
-    -- TODO end of a textinput; what to do depends on what was being asked
+    -- end of a textinput; what to do depends on what was being asked
+    if current_prompt == prompts.tile_size then
+      tiles_json.tile_size = tonumber(current_text)
+      current_text = ""
+      tile_usage = get_tile_usage(tiles_json, tile_image)
+      if next_unused_tile(tiles_json, tile_image, tile_usage) then
+        current_prompt = prompts.enter_name
+      end
+    elseif current_prompt == prompts.enter_name then
+      if #current_text > 0 then
+        tiles_json.tiles[current_text] = { x = current_x, y = current_y, }
+      end
+      tile_usage[current_x][current_y] = true
+      current_text = ""
+      if not (next_unused_tile(tiles_json, tile_image, tile_usage)) then
+        if flag_new_file then
+          utility.save_data(tiles_json, tiles_json.image_path .. ".json")
+        else
+          utility.save_data(tiles_json)
+        end
+        current_prompt = prompts.start_new
+      end
+    end
   end
 end
 
 function love.filedropped(file_path)
   if file_path:sub(-5) == ".json" then
     tiles_json = utility.load_data(file_path)
+    flag_new_file = false
     tiles, tile_image = tilesheet(tiles_json)
+    tile_usage = get_tile_usage(tiles_json, tile_image)
+    if next_unused_tile(tiles_json, tile_image, tile_usage) then
+      current_prompt = prompts.enter_name
+    end
   else
     tiles_json = {
       image_path = file_path,
+      -- tile_size is not defined yet
     }
+    flag_new_file = true
     tiles, tile_image = tilesheet(file_path)
+    current_prompt = prompts.tile_size
+    current_text = ""
   end
 end