Tree Physics

• Fix trees not converting to normal sub-levels when built on
• Fix crash with blocks in the treephysics:falls_from_trees tag that can have no mass
• Remove the treephysics:extra_leaves tag
• Change rootless tree detection to also allow rooted dirt to work if found
• Add treephysics:leaves and treephysics:logs for defining blocks that should be treated as leaves/logs by the mod
• Add a system for defining types of leaves that should be considered the same. This should (mostly) solve a problem with trees that have multiple kinds of leaves

Leaf Grouping

In a data pack, create a file: data/<namespace>/treephysics/leaf_grouping.json

{
  "groups": {
    // A group can be defined with a name and a list of blocks it contains
    // The name can be anything, but generally should contain a namespace to avoid unwanted overlap
    "example:glungus": [
      "example:glungus_leaves",
      "example:flowering_glungus_leaves"
    ],
    
    // Blocks can be added to existing groups by using the same name
    "minecraft:oak": [
      "example:apple_oak_leaves"
    ]
  }
}

Groups already exist for these mods:

• No Man's Land
• Biomes O' Plenty
• Oh The Biomes We've Gone
• Environmental
• Atmospheric
• Bountiful Fares
• Burnt