From 3e692c45b1ffc2e2a6d7911a82bb862fc20d9340 Mon Sep 17 00:00:00 2001
From: Lee Hambley <lee.hambley@gmail.com>
Date: Sat, 3 Jan 2026 18:19:52 +0100
Subject: [PATCH] Update hf_mfu_amiibo_sim.lua

Changes the way the `.bin` is loaded into the emulator because Command::newNG didn't work.

Signed-off-by: Lee Hambley <lee.hambley@gmail.com>
---
 client/luascripts/hf_mfu_amiibo_sim.lua | 85 ++++++++++++-------------
 1 file changed, 42 insertions(+), 43 deletions(-)

diff --git a/client/luascripts/hf_mfu_amiibo_sim.lua b/client/luascripts/hf_mfu_amiibo_sim.lua
index e00248c90..01f8792ce 100644
--- a/client/luascripts/hf_mfu_amiibo_sim.lua
+++ b/client/luascripts/hf_mfu_amiibo_sim.lua
@@ -6,8 +6,8 @@ local ansicolors = require('ansicolors')
 local amiibo_tools = require('amiibo_tools')
 
 copyright = ''
-author = 'George Talusan'
-version = 'v0.0.2'
+author = 'George Talusan, modified by Lee Hambley'
+version = 'v0.0.3'
 desc = [[
 This script will try to load a binary datadump of an Amiibo.
 It will recalculate PWD and PACK if necessary.
@@ -24,26 +24,9 @@ arguments = [[
     -f             : filename for the datadump to read (bin)
 ]]
 
-local DEBUG = false -- the debug flag
-
 local bxor = bit32.bxor
 local sub = string.sub
-local format = string.format
 
----
--- A debug printout-function
-local function dbg(args)
-    if not DEBUG then return end
-    if type(args) == 'table' then
-        local i = 1
-        while result[i] do
-            dbg(result[i])
-            i = i+1
-        end
-    else
-        print('###', args)
-    end
-end
 ---
 -- This is only meant to be used when errors occur
 local function oops(err)
@@ -65,38 +48,55 @@ local function help()
     print(ansicolors.cyan..'Example usage'..ansicolors.reset)
     print(example)
 end
---
--- Exit message
-local function ExitMsg(msg)
-    print( string.rep('--',20) )
-    print( string.rep('--',20) )
-    print(msg)
-    print()
+
+local function BlocksToBinary(blocks, last)
+    local out = {}
+    for i = 0, last, 1 do
+        local blk = blocks[i]
+        if not blk or #blk ~= 8 then
+            return nil, ('Invalid block %d (%s)'):format(i, tostring(blk))
+        end
+        for j = 1, 8, 2 do
+            out[#out+1] = string.char(tonumber(blk:sub(j, j + 1), 16))
+        end
+    end
+    return table.concat(out)
 end
 
-local function LoadEmulator(uid, blocks)
+local function LoadViaEload(blocks)
     io.write('Sending Amiibo to emulator memory')
-    local cmd, blockdata
-    for i=0,148,1 do
-        blockdata = blocks[i]
-        io.write('.')
-        io.flush()
-        core.clearCommandBuffer()
-        cmd = Command:newNG{cmd = cmds.CMD_HF_MIFARE_EML_MEMSET, data = ('%02x%02x%02x%s'):format(i, 1, 4, blockdata)}
-        local err, msg = cmd:sendNG(true)
-        if err == nil then return err, msg end
+    local blob, err = BlocksToBinary(blocks, 148)
+    if not blob then return false, err end
+
+    -- Create temp file for eload command
+    -- Note: No direct MFU memory set command available (CMD_HF_MIFARE_EML_MEMSET only for MIFARE)
+    local tmp = '/tmp/amiibo_emul.bin'
+    local fh, ferr = io.open(tmp, 'wb')
+    if not fh then return false, ferr end
+    fh:write(blob)
+    fh:close()
+
+    core.clearCommandBuffer()
+    local ok, msg = core.console(('hf mfu eload -f %s'):format(tmp))
+    
+    -- Clean up temp file
+    os.remove(tmp)
+    
+    if ok == false then
+        return false, msg or 'eload command failed'
     end
     io.write('\n')
+    return true
 end
 
 local function main(args)
     print( string.rep('--',20) )
     print( string.rep('--',20) )
 
-    local result, err, hex
+    local err, hex
     local inputTemplate = 'dumpdata.bin'
 
-    for o, a in getopt.getopt(args, 'hf:u:') do
+    for o, a in getopt.getopt(args, 'hf:') do
         if o == 'h' then return help() end
         if o == 'f' then inputTemplate = a end
     end
@@ -105,7 +105,6 @@ local function main(args)
     hex, err = utils.ReadDumpFile(inputTemplate)
     if not hex then return oops(err) end
 
-    -- only deal with missing PWD and PACK, or with 56 emu hdr
     if #hex ~= 1064 and #hex ~= 1080 and #hex ~= 1192 then return oops('Expecting either a plain binary or emulator dump') end
 
     local amiibo_offset = (#hex == 1064 or #hex == 1080) and 0 or 112
@@ -114,7 +113,6 @@ local function main(args)
     local amiibo_type = amiibo_info:sub(7, 8)
     local amiibo_series = amiibo_info:sub(13, 14)
 
-    dbg('raw: '..ansicolors.green..amiibo_info..ansicolors.reset)
     print('game: '..ansicolors.green..amiibo_tools.db.game_series[("0x%s"):format(amiibo_game)]..ansicolors.reset)
     print('character: '..ansicolors.green..amiibo_tools.db.amiibos[("0x%s"):format(amiibo_info)].name..ansicolors.reset)
     print('type: '..ansicolors.green..amiibo_tools.db.types[("0x%s"):format(amiibo_type)]..ansicolors.reset)
@@ -141,11 +139,12 @@ local function main(args)
 
     -- add PWD and PACK
     local uid = blocks[14]:sub(1, 6)..blocks[15]:sub(1, 8)
-    blocks[147] = ("%08x"):format(bxor(bxor(tonumber(sub(uid, 2, 10), 16), tonumber(sub(uid, 6, 14), 16)), 0xaa55aa55))
+    local pwd = ("%08x"):format(bxor(bxor(tonumber(sub(uid, 2, 10), 16), tonumber(sub(uid, 6, 14), 16)), 0xaa55aa55))
+    blocks[147] = pwd
     blocks[148] = "80800000"
 
-    err = LoadEmulator(uid, blocks)
-    if err then return oops(err) end
+    local ok, loadErr = LoadViaEload(blocks)
+    if not ok then return oops(loadErr) end
     core.clearCommandBuffer()
     core.console(("hf mfu sim -t 7 -u %s"):format(uid))
 end