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RDP Particle Files

Particle animations stored in .rdp need some post processing after extracting them to be easier to modify.

Get Editable RDP XML Files

Do fctohex with FileDBReader using the RDP interpreter file.

./FileDBReader.exe fctohex -f sparks_01.rdp -i ./FileFormats/rdp.xml

Output with CDATA as is:

  <ParticleCount>5</ParticleCount>
  ...
  <P_Starts>CDATA[140 123 105 53 35]</P_Starts>
  <P_Ends>CDATA[52 34 12 103 86]</P_Ends>
  <P_Materials>CDATA[0 0 0 0 0]</P_Materials>
  <TotalTickCount>259</TotalTickCount>
  <T_Positions>CDATA[-28936 23257 -1875 -28936 23257 -1875 ...]</T_Positions>
  <T_Rotations>CDATA[0 182 0 0 182 0 ...]</T_Rotations>
  <T_Scales>CDATA[255 255 255 255 255 255 ...]</T_Scales>
  <T_Colors>CDATA[255 255 255 0 255 255 255 19 ...]</T_Colors>

Read the RDP interpreter file to understand how those P_ and T_ values are converted in useful numbers.

Simplified RDP XML Files

The CDATA sections are quite annoying to work with. Anno Modding Tools for VSCode has also a right-click command to convert RDP files into a simplified XML and back with some structure changes:

  <Particles>
    <Particle>
      <Material>0</Material>
      <StartFrame>140</StartFrame>
      <Ticks>
        <Tick>
          <PositionXYZ>-0.883084 0.709769 -0.057222</PositionXYZ>
          <RotationXYZ>0.0 255.9 0.0</RotationXYZ>
          <ScaleXYZ>1.0000 1.0000 1.0000</ScaleXYZ>
          <ColorARGB>0 255 255 255</ColorARGB>
        </Tick>
        <Tick>
          <PositionXYZ>-0.883084 0.709769 -0.057222</PositionXYZ>
          <RotationXYZ>0.0 255.9 0.0</RotationXYZ>
          <ScaleXYZ>1.0000 1.0000 1.0000</ScaleXYZ>
          <ColorARGB>19 255 255 255</ColorARGB>
        </Tick>
        ...
  • Material: P_Materials entry.
  • StartFrame: P_Starts entry. P_Ends entry is calculated by the number of ticks when converting back.
  • PositionXYZ: -1.0 to 1.0. Multiplied with <Extents> in the game.
  • RotationXZY: 0 to 359.9 degrees.
  • ScaleXYZ: 0.0 to 1.0. Multiplied with <MaxScale> in the game.
  • ColorARGB: 0-255 per channel.