new TerrainBlock(Terrain) {
rotation = "1 0 0 0";
scale = "1 1 1";
terrainFile = "./ocean.ter";
bumpTexture = "./sand1";
squareSize = "16";
bumpScale = "5";
bumpOffset = "0.0051";
zeroBumpScale = "5";
RepeatTerrain = "1";
};
This is the terrainblock. To view it, you need to open ocean.mis in notepad. Each of the fields you see corresponds to a field in the mission editor. For a frame of reference, terrainFile and bumpTexture would usually be under the Media heading, I believe.
You need to change the square size to 8. That is all. You're probably going to have to redo your terrain after this, but it shouldn't take long.
Here, you can copy and paste it.
new TerrainBlock(Terrain) {
rotation = "1 0 0 0";
scale = "1 1 1";
terrainFile = "./ocean.ter";
bumpTexture = "./sand1";
squareSize = "8";
bumpScale = "5";
bumpOffset = "0.0051";
zeroBumpScale = "5";
RepeatTerrain = "1";
};