# 地物生成

### 地面地物

如下图所示的即为地面地物，它们在地面上生成：

![这是一个地物](https://1341925849-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F-M28TcKgSDvuFN510qye-887967055%2Fuploads%2F3PWqiVlDCzuT10MExbD8%2Fdesert_rose.png?alt=media\&token=b58005bd-d40f-418d-b89f-8cd5bc16e5f6)

在任意物品配置文件下添加如下内容：

```
surface_decorators:
  rose:
    block: rose
    bottom_blocks:
    - DIRT
    - GRASS_BLOCK
    biomes:
    - PLAINS
    - SUNFLOWER_PLAINS
    - RIVER
    - MOUNTAINS
    - MOUNTAIN_EDGE
    - BIRCH_FOREST
    - BIRCH_FOREST_HILLS
    - TALL_BIRCH_FOREST
    - TALL_BIRCH_HILLS
    worlds:
      - world
    chance: 10
    max_height: 255 
    min_height: 0
    amount: 1
```

由于其中大部分选项前面两节都已介绍，这里只说明 `block` 选项即为地物的方块id。

如下图所示为洞穴 地物，它们的洞穴内生成：

![这是一个洞穴地物](https://1341925849-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F-M28TcKgSDvuFN510qye-887967055%2Fuploads%2FfU0KtDApSkCgkUYKcBgm%2Fimage.png?alt=media\&token=41526cbc-3e64-431c-be50-ea7a01c25f8a)

在任意物品配置文件中添加如下内容：

```
cave_decorators:
  small_rocks:
    block: small_rocks
    bottom_blocks:
    - DIRT
    - GRASS_BLOCK
    - STONE
    - COBBLESTONE
    - MOSSY_COBBLESTONE
    biomes:
    - PLAINS
    - SUNFLOWER_PLAINS
    - RIVER
    - MOUNTAINS
    - MOUNTAIN_EDGE
    - BIRCH_FOREST
    - BIRCH_FOREST_HILLS
    - TALL_BIRCH_FOREST
    - TALL_BIRCH_HILLS
    worlds:
      - world
    chance: 100
    max_height: 255 
    min_height: 0
    amount: 4
    position: SURFACE
```

这里只介绍 `position` 选项，它的作用是指定这个地物在洞穴天花板还是地上，如果是天花板，填写 `CEILING`，如果是地上，填写 `SURFACE`。


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