Call of Duty 4: Advanced Patch Editing Options

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By pressing 'y', you can start making hills or do other modifications to the vertexes of a terrain mesh. Tick the box 'Allow soft selection on unselected patches' to enable editing of unselected patches as well (else only selected patches are affected).

  • Paint Height

By clicking the left mouse button you can raise the terrain, by clicking the right mouse button you can lower the terrain. Usually, the amplitude should be put at 0.25 or even lower.

  • Flatten

Select a height in the lower-right corner of the window, and press the left mouse button on the terrain. This will bring the terrain at the Z position you just entered.

  • Smooth

This will make your terrain more smooth, and should be used after 'Paint Height'.