手册:Minecraft:tree feature/金合欢树树干语法

"acacia_trunk": {
 "trunk_width": <par1>,
 "trunk_height": {
   "base": <par2>,
   "intervals": <par3>,
   "min_height_for_canopy": <par4>
 },
 "trunk_lean": {
   "allow_diagonal_growth": <par5>,
   "lean_height": <par6>,
   "lean_steps": <par7>,
   "lean_length": <par8>
 },
 "trunk_block": <par9>,
 "branches": {
   "branch_length": <par10>,
   "branch_position": <par11>,
   "branch_chance": <par12>,
   "branch_canopy": {
     "acacia_canopy": {
       "canopy_size": <par13>,
       "leaf_block": <par14>,
       "simplify_canopy": <par15>
     },
     "canopy": {
       "canopy_offset": {
         "min": <par16>,
         "max": <par17>
       },
       "min_width": <par18>,
       "canopy_slope": {
         "rise": <par19>,
         "run": <par20>
       },
       "variation_chance": <par21>,
       "leaf_block": <par22>,
       "canopy_decoration": {
         "decoration_chance": <par23>,
         "decoration_block": <par24>,
         "num_steps": <par25>,
         "step_direction": <par26>
       }
     },
     "fancy_canopy": {
       "height": <par27>,
       "radius": <par28>,
       "leaf_block": <par29>
     },
     "mangrove_canopy": {
       "canopy_height": <par30>,
       "canopy_radius": <par31>,
       "leaf_placement_attempts": <par32>,
       "leaf_blocks": <par33>,
       "canopy_decoration": {
         "decoration_chance": <par34>,
         "decoration_block": <par35>,
         "num_steps": <par36>,
         "step_direction": "<par37>"
       },
       "hanging_block": <par38>,
       "hanging_block_placement_chance": <par39>
     },
     "mega_canopy": {
       "canopy_height": <par40>,
       "base_radius": <par41>,
       "core_width": <par42>,
       "simplify_canopy": <par43>,
       "leaf_block": <par44>
     },
     "mega_pine_canopy": {
       "canopy_height": <par45>,
       "base_radius": <par46>,
       "radius_step_modifier": <par47>,
       "core_width": <par48>,
       "leaf_block": <par49>
     },
     "pine_canopy": {
       "canopy_height": <par50>,
       "base_radius": <par51>,
       "leaf_block": <par52>
     },
     "roofed_canopy": {
       "canopy_height": <par53>,
       "core_width": <par54>,
       "outer_radius": <par55>,
       "inner_radius": <par56>,
       "leaf_block": <par57>
     },
     "spruce_canopy": {
       "lower_offset": <par58>,
       "upper_offset": <par59>,
       "max_radius": <par60>,
       "leaf_block": <par61>
     }
   }
 },
 "trunk_decoration": {
   "decoration_chance": <par62>,
   "decoration_block": <par63>,
   "num_steps": <par64>,
   "step_direction": "<par65>"
 }
}