Fixed: Ignore the lateral movement

lua/readermode/init.lua

@@ -18,17 +18,29 @@ function M.setup(opts)
 	vim.api.nvim_create_user_command("ReaderMode", require("readermode").toggle, {})
 	vim.keymap.set({ "n" }, M.opts.keymap, M.toggle, { desc = M.opts.desc })
 
+	local last_line = M.getCurrentLineNumber()
+
 	-- Define Autocommand w/ new Autogroup
 	vim.api.nvim_create_autocmd({ "CursorMoved", "CursorMovedI" }, {
 		group = vim.api.nvim_create_augroup("ReaderMode", { clear = true }),
 		callback = function()
 			if M.opts.enabled then
-				M.center()
+				local current_line = M.getCurrentLineNumber()
+				if current_line ~= last_line then
+					M.center()
+				else
+				end
+				last_line = current_line
 			end
 		end,
 	})
 end
 
+---@return number
+function M.getCurrentLineNumber()
+	return vim.api.nvim_win_get_cursor(0)[1]
+end
+
 ---@return nil
 function M.toggle()
 	M.opts.enabled = not M.opts.enabled