procedure OnMissionStart;
begin
  Actions.PlayWavAtLocationLooped(-1, 'lava', 3.5, 28, 202, 146);
  Actions.PlayWavAtLocationLooped(-1, 'lava', 3.5, 28, 104, 194);
  Actions.PlayWavAtLocationLooped(-1, 'swamp', 1, 28, 57, 156);
  Actions.PlayWavAtLocationLooped(-1, 'swamp', 1, 28, 232, 84);
  Actions.PlayWavAtLocationLooped(-1, 'swamp', 1, 28, 178, 105);
  Actions.PlayWavAtLocationLooped(-1, 'swamp', 1, 28, 17, 163);
  Actions.PlayWavAtLocationLooped(-1, 'swamp', 1, 28, 24, 125);
  Actions.PlayWavAtLocationLooped(-1, 'swamp', 1, 28, 67, 161);
  Actions.PlayWavAtLocationLooped(-1, 'swamp', 1, 28, 95, 151);
  Actions.PlayWavAtLocationLooped(-1, 'waterfall', 4, 28, 68, 110);
  Actions.PlayWavAtLocationLooped(-1, 'waterfall', 4, 28, 252, 133);
  Actions.PlayWavAtLocationLooped(-1, 'waterfall', 4, 28, 242, 16);
end;