1.) Depends on how far you want to mod. If you want EVERYTHING to be of one hard material like stone, you can copy the entry for the Bronze Colossus about its tissues, and just replace BRONZE with the stone/metal/soil of your choice. If it's in materials, your best bet would be to copy the properties of the material you want them to be and do some crafty modding, but that would require me typing up a more in-depth guide, lol.
2.) Just remove the BIOME:SUBTERRENEAN_CHASM and UNDERGROUND_DEPTH, and replace it with BIOME:ANY_LAND. That will make the creature show up in all solid land above-ground biomes. Sadly they can't appear underground at the same time, it is either above or below.
3.) You can't assign new types of cities (at least I think you can't) but you can choose to make them use the types already available under the DEFAULT_SITE tag. Just change it to match the entry you want it, like humans are CITY, elves are TREE_CITY I think, and so on. You can look in the entity raws to see which sites are already favored. As for starting in certain biomes, those are the START_BIOME and BIOME_SUPPORT tags. START_BIOME is where they will attempt to place their cities during world-gen, and BIOME_SUPPORT is where they can live. Dwarves have START_BIOME:MOUNTAIN, and then list all the sites they can live in. The biome support tags also have prefernece weights: BIOME_SUPPORT:MOUNTAIN:3 is dwarves, and the rest fo their biomes is 1, so it means they much prefer to live in mountains.
4.) Depends on what kind of materials you're looking for. Specific stones/metals/etc. are in the inorganic files, so you can copy one of those and tinker with it if you're making a new metal to make weapons out of. New items can be placed in all the item raws, the second word should tell you what types of items are inside to look at.
5.) Not quite sure what you mean. Exposed caverns to the surface on embark is a bug that sometimes happens, not a worldgen parameter. If you were really ambitious, you could assign all the underground creatures and plants to aboveground biomes and just eliminate caverns from your worldgens.
6.) That can be assigned in their material raws, using the tag MAT_FIXED_TEMP:number. Be careful to also assign melting/boiling/heatdam and colddam tokens as well. If you're trying to make a hot leather, for example, you don't want it catching on fire and burning away due to its own temp.
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Topic: Modding in <material> body parts and other q's (Read 490 times)