customType example 1.CT

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<CheatTable CheatEngineTableVersion="26">
  <CheatEntries>
    <CheatEntry>
      <ID>0</ID>
      <Description>"Example (creates custom type and memory record with that type)"</Description>
      <LastState/>
      <VariableType>Auto Assembler Script</VariableType>
      <AssemblerScript>{$lua}
[ENABLE]
if syntaxcheck then return end -- prevent running lua code on save/edit
-- register new example custom type via lua that is just a *10
-- eg. so when 100 is stored in memory the custom type reads 10
local ct = getCustomType('*10')
if not ct then -- create the custom type only if the name does not already exist
  ct = registerCustomTypeLua('*10', -- name
    4, -- size in bytes
    function(...) -- from bytes
      local bytes = {...}
      return byteTableToDword(bytes)/10
    end,
    function(num) -- to bytes
      print(num*10)
      return unpack(DwordToByteTable(num*10))
    end,
    false) -- not a float
else
  -- notify used during creation to avoid forgetting why it doesn't change lol
  --print('not creating type, already exists')
end

-- create a new memory record for step 2 of the i386 tutorial with that custom type
if not mr then -- only create memory records if they don't already exist
  local al = getAddressList()
  mr = al.createMemoryRecord() -- global mr
  mr.Address = '[Tutorial-i386.exe+1FD5D0]+480'
  mr.Description = 'Step 2'
  mr.Type = vtCustom
  mr.CustomTypeName = ct.name
  mr.DontSave = true

  -- and with regular 4 byte type (default)
  local mr2 = al.createMemoryRecord()
  mr2.Address = '[Tutorial-i386.exe+1FD5D0]+480'
  mr2.Description = 'Step 2 - 4 byte'
  mr.DontSave = true
end

-- demo
print(mr.Value)
mr.Value = '1000'

-- note ct.byteTableToValue and ct.valueToByteTable exist
-- the latter seems a bit bugged (at least for custom lua types) in CE6.7 so no demo currently

[DISABLE]
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  <UserdefinedSymbols/>
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