Custom Fences

intermediate

Initial Block JSON
Fence Model
- Block Model
- Item Model
Applying Geometry & Textures
- Item Visual
Collision & Selection Boxes
Final Block JSON
Item JSON

Download Example

FORMAT VERSION 1.26.40

This tutorial assumes a good understanding of block visuals and block permutations. Check out the block visuals guide before starting.

In this tutorial, you'll learn how to create your own fence blocks with connection and multi-box collisions.

Features:

Connects with adjacent blocks in each cardinal direction.
Multi-box collisions that are 1.5 blocks tall, preventing most entities from jumping over the fence.
Able to be used as fuel in a furnace.

Initial Block JSON

There are quite a few components listed here. Here's what is important for fences specifically:

The minecraft:connection trait enables the minecraft:connection_north, minecraft:connection_south, minecraft:connection_west and minecraft:connection_east states which indicate in which directions the fence should form a connection.
The minecraft:has_fence_connections tag tells vanilla wooden fences that they can connect to the block.
The minecraft:connection_rule component is used to prevent bars, glass panes and walls from connecting to the block.

Note that the block description does not have the menu_category parameter as that will be defined in the item JSON instead in a later step.

📝 BP/blocks/custom_fence.json

json

{
    "format_version": "1.26.40",
    "minecraft:block": {
        "description": {
            "identifier": "wiki:custom_fence",
            "traits": {
                "minecraft:connection": {
                    "enabled_states": ["minecraft:cardinal_connections"]
                }
            }
        },
        "components": {
            "minecraft:tags": [
                "minecraft:has_fence_connections",
                "minecraft:is_axe_item_destructible"
            ],
            "minecraft:destructible_by_explosion": {
                "explosion_resistance": 15
            },
            "minecraft:destructible_by_mining": {
                "seconds_to_destroy": 2
            },
            "minecraft:destruction_particles": {
                "particle_count": 48
            },
            "minecraft:flammable": {
                "catch_chance_modifier": 5,
                "destroy_chance_modifier": 20,
                "lava_flammable": "always"
            },
            "minecraft:connection_rule": {
                "accepts_connections_from": "only_fences"
            },
            "minecraft:support": {
                "shape": "fence"
            },
            // Prevents snow from accumulating above the fence
            "minecraft:precipitation_interactions": {
                "precipitation_behavior": "obstruct_rain"
            },
            // Allows the fence to be waterlogged
            "minecraft:liquid_detection": {
                "detection_rules": [
                    {
                        "liquid_type": "water",
                        "can_contain_liquid": true
                    }
                ]
            },
            // Allows leads to be attached to the fence
            "minecraft:leashable": {
                "offset": [0, 12, 0]
            },
            "minecraft:selection_box": {
                "origin": [-2, 0, -2],
                "size": [4, 16, 4]
            },
            "minecraft:collision_box": {
                "origin": [-2, 0, -2],
                "size": [4, 24, 4]
            }
        }
    }
}

Fence Model

You might have noticed that fences use two distinct models: one when carried in the inventory depicting two posts and a different model when placed which only has one post.

This means that we'll have to create two models for our custom fence, where one is applied to the block and the other is applied to the block item.

Block Model

In this example, our block model will contain all of the fence rails (the horizontal parts of the fence). Each pair of rails in each direction is contained within a separate bone. This will allow us to conditionally show/hide the rails based on the block's permutation using bone_visibility.

Block Geometry JSON

📝 RP/models/blocks/custom_fence.geo.json

json

{
    "format_version": "1.26.40",
    "minecraft:geometry": [
        {
            "description": {
                "identifier": "geometry.custom_fence",
                "texture_width": 16,
                "texture_height": 16
            },
            "bones": [
                {
                    "name": "post",
                    "pivot": [0, 0, 0],
                    "cubes": [
                        {
                            "origin": [-2, 0, -2],
                            "size": [4, 16, 4],
                            "uv": {
                                "north": { "uv": [6, 0], "uv_size": [4, 16] },
                                "east": { "uv": [6, 0], "uv_size": [4, 16] },
                                "south": { "uv": [6, 0], "uv_size": [4, 16] },
                                "west": { "uv": [6, 0], "uv_size": [4, 16] },
                                "up": { "uv": [10, 10], "uv_size": [-4, -4] },
                                "down": { "uv": [10, 10], "uv_size": [-4, -4] }
                            }
                        }
                    ]
                },
                {
                    "name": "north_rails",
                    "pivot": [0, 0, 0],
                    "cubes": [
                        {
                            "origin": [-1, 12, -8],
                            "size": [2, 3, 6],
                            "uv": {
                                "north": { "uv": [7, 1], "uv_size": [2, 3] },
                                "east": { "uv": [10, 1], "uv_size": [6, 3] },
                                "west": { "uv": [0, 1], "uv_size": [6, 3] },
                                "up": { "uv": [9, 6], "uv_size": [-2, -6] },
                                "down": { "uv": [9, 16], "uv_size": [-2, -6] }
                            }
                        },
                        {
                            "origin": [-1, 6, -8],
                            "size": [2, 3, 6],
                            "uv": {
                                "north": { "uv": [7, 7], "uv_size": [2, 3] },
                                "east": { "uv": [10, 7], "uv_size": [6, 3] },
                                "west": { "uv": [0, 7], "uv_size": [6, 3] },
                                "up": { "uv": [9, 6], "uv_size": [-2, -6] },
                                "down": { "uv": [9, 16], "uv_size": [-2, -6] }
                            }
                        }
                    ]
                },
                {
                    "name": "south_rails",
                    "pivot": [0, 0, 0],
                    "cubes": [
                        {
                            "origin": [-1, 12, 2],
                            "size": [2, 3, 6],
                            "uv": {
                                "east": { "uv": [0, 1], "uv_size": [6, 3] },
                                "south": { "uv": [7, 1], "uv_size": [2, 3] },
                                "west": { "uv": [10, 1], "uv_size": [6, 3] },
                                "up": { "uv": [9, 16], "uv_size": [-2, -6] },
                                "down": { "uv": [9, 6], "uv_size": [-2, -6] }
                            }
                        },
                        {
                            "origin": [-1, 6, 2],
                            "size": [2, 3, 6],
                            "uv": {
                                "east": { "uv": [0, 7], "uv_size": [6, 3] },
                                "south": { "uv": [7, 7], "uv_size": [2, 3] },
                                "west": { "uv": [10, 7], "uv_size": [6, 3] },
                                "up": { "uv": [9, 16], "uv_size": [-2, -6] },
                                "down": { "uv": [9, 6], "uv_size": [-2, -6] }
                            }
                        }
                    ]
                },
                {
                    "name": "west_rails",
                    "pivot": [0, 0, 0],
                    "cubes": [
                        {
                            "origin": [2, 12, -1],
                            "size": [6, 3, 2],
                            "uv": {
                                "north": { "uv": [10, 1], "uv_size": [6, 3] },
                                "south": { "uv": [0, 1], "uv_size": [6, 3] },
                                "west": { "uv": [7, 1], "uv_size": [2, 3] },
                                "up": { "uv": [6, 9], "uv_size": [-6, -2] },
                                "down": { "uv": [6, 9], "uv_size": [-6, -2] }
                            }
                        },
                        {
                            "origin": [2, 6, -1],
                            "size": [6, 3, 2],
                            "uv": {
                                "north": { "uv": [10, 7], "uv_size": [6, 3] },
                                "south": { "uv": [0, 7], "uv_size": [6, 3] },
                                "west": { "uv": [7, 7], "uv_size": [2, 3] },
                                "up": { "uv": [6, 9], "uv_size": [-6, -2] },
                                "down": { "uv": [6, 9], "uv_size": [-6, -2] }
                            }
                        }
                    ]
                },
                {
                    "name": "east_rails",
                    "pivot": [0, 0, 0],
                    "cubes": [
                        {
                            "origin": [-8, 12, -1],
                            "size": [6, 3, 2],
                            "uv": {
                                "north": { "uv": [0, 1], "uv_size": [6, 3] },
                                "east": { "uv": [7, 1], "uv_size": [2, 3] },
                                "south": { "uv": [10, 1], "uv_size": [6, 3] },
                                "up": { "uv": [16, 9], "uv_size": [-6, -2] },
                                "down": { "uv": [16, 9], "uv_size": [-6, -2] }
                            }
                        },
                        {
                            "origin": [-8, 6, -1],
                            "size": [6, 3, 2],
                            "uv": {
                                "north": { "uv": [0, 7], "uv_size": [6, 3] },
                                "east": { "uv": [7, 7], "uv_size": [2, 3] },
                                "south": { "uv": [10, 7], "uv_size": [6, 3] },
                                "up": { "uv": [16, 9], "uv_size": [-6, -2] },
                                "down": { "uv": [16, 9], "uv_size": [-6, -2] }
                            }
                        }
                    ]
                }
            ]
        }
    ]
}

Block Culling Rules JSON

📝 RP/block_culling/custom_fence.json

json

{
    "format_version": "1.21.80",
    "minecraft:block_culling_rules": {
        "description": {
            "identifier": "wiki:culling.custom_fence"
        },
        "rules": [
            // Post
            {
                "direction": "down",
                "geometry_part": {
                    "bone": "post",
                    "cube": 0,
                    "face": "down"
                }
            },
            {
                "direction": "up",
                "geometry_part": {
                    "bone": "post",
                    "cube": 0,
                    "face": "up"
                }
            },
            // North rails
            {
                "direction": "north",
                "geometry_part": {
                    "bone": "north_rails",
                    "cube": 0,
                    "face": "north"
                }
            },
            {
                "direction": "north",
                "geometry_part": {
                    "bone": "north_rails",
                    "cube": 1,
                    "face": "north"
                }
            },
            // South rails
            {
                "direction": "south",
                "geometry_part": {
                    "bone": "south_rails",
                    "cube": 0,
                    "face": "south"
                }
            },
            {
                "direction": "south",
                "geometry_part": {
                    "bone": "south_rails",
                    "cube": 1,
                    "face": "south"
                }
            },
            // West rails
            {
                "direction": "west",
                "geometry_part": {
                    "bone": "west_rails",
                    "cube": 0,
                    "face": "west"
                }
            },
            {
                "direction": "west",
                "geometry_part": {
                    "bone": "west_rails",
                    "cube": 1,
                    "face": "west"
                }
            },
            // East rails
            {
                "direction": "east",
                "geometry_part": {
                    "bone": "east_rails",
                    "cube": 0,
                    "face": "east"
                }
            },
            {
                "direction": "east",
                "geometry_part": {
                    "bone": "east_rails",
                    "cube": 1,
                    "face": "east"
                }
            }
        ]
    }
}

Item Model

In contrast, the bones in the item model are not necessary and have just been used to organize the cubes.

Item Geometry JSON

📝 RP/models/blocks/custom_fence_carried.geo.json

json

{
    "format_version": "1.26.40",
    "minecraft:geometry": [
        {
            "description": {
                "identifier": "geometry.custom_fence_carried",
                "texture_width": 16,
                "texture_height": 16
            },
            "item_display_transforms": {
                "gui": {
                    "fit_to_frame": false
                },
                "fixed": {
                    "rotation": [0, -90, 0]
                },
                "shelf": {
                    "rotation": [0, -90, 0]
                }
            },
            "bones": [
                {
                    "name": "posts",
                    "pivot": [0, 0, 0],
                    "cubes": [
                        {
                            "origin": [-2, 0, 4],
                            "size": [4, 16, 4],
                            "uv": {
                                "north": { "uv": [6, 0], "uv_size": [4, 16] },
                                "east": { "uv": [0, 0], "uv_size": [4, 16] },
                                "south": { "uv": [6, 0], "uv_size": [4, 16] },
                                "west": { "uv": [12, 0], "uv_size": [4, 16] },
                                "up": { "uv": [10, 16], "uv_size": [-4, -4] },
                                "down": { "uv": [10, 4], "uv_size": [-4, -4] }
                            }
                        },
                        {
                            "origin": [-2, 0, -8],
                            "size": [4, 16, 4],
                            "uv": {
                                "north": { "uv": [6, 0], "uv_size": [4, 16] },
                                "east": { "uv": [12, 0], "uv_size": [4, 16] },
                                "south": { "uv": [6, 0], "uv_size": [4, 16] },
                                "west": { "uv": [0, 0], "uv_size": [4, 16] },
                                "up": { "uv": [10, 4], "uv_size": [-4, -4] },
                                "down": { "uv": [10, 16], "uv_size": [-4, -4] }
                            }
                        }
                    ]
                },
                {
                    "name": "rails",
                    "pivot": [0, 0, 0],
                    "cubes": [
                        {
                            "origin": [-1, 12, -10],
                            "size": [2, 3, 2],
                            "uv": {
                                "north": { "uv": [0, 1], "uv_size": [2, 3] },
                                "east": { "uv": [0, 1], "uv_size": [2, 3] },
                                "west": { "uv": [0, 1], "uv_size": [2, 3] },
                                "up": { "uv": [9, 16], "uv_size": [-2, -2] },
                                "down": { "uv": [9, 16], "uv_size": [-2, -2] }
                            }
                        },
                        {
                            "origin": [-1, 12, -4],
                            "size": [2, 3, 8],
                            "uv": {
                                "east": { "uv": [4, 1], "uv_size": [8, 3] },
                                "west": { "uv": [4, 1], "uv_size": [8, 3] },
                                "up": { "uv": [9, 12], "uv_size": [-2, -8] },
                                "down": { "uv": [9, 12], "uv_size": [-2, -8] }
                            }
                        },
                        {
                            "origin": [-1, 12, 8],
                            "size": [2, 3, 2],
                            "uv": {
                                "east": { "uv": [14, 1], "uv_size": [2, 3] },
                                "south": { "uv": [14, 1], "uv_size": [2, 3] },
                                "west": { "uv": [14, 1], "uv_size": [2, 3] },
                                "up": { "uv": [9, 2], "uv_size": [-2, -2] },
                                "down": { "uv": [9, 2], "uv_size": [-2, -2] }
                            }
                        },
                        {
                            "origin": [-1, 6, -10],
                            "size": [2, 3, 2],
                            "uv": {
                                "north": { "uv": [0, 7], "uv_size": [2, 3] },
                                "east": { "uv": [0, 7], "uv_size": [2, 3] },
                                "west": { "uv": [0, 7], "uv_size": [2, 3] },
                                "up": { "uv": [9, 16], "uv_size": [-2, -2] },
                                "down": { "uv": [9, 16], "uv_size": [-2, -2] }
                            }
                        },
                        {
                            "origin": [-1, 6, -4],
                            "size": [2, 3, 8],
                            "uv": {
                                "east": { "uv": [4, 7], "uv_size": [8, 3] },
                                "west": { "uv": [4, 7], "uv_size": [8, 3] },
                                "up": { "uv": [9, 12], "uv_size": [-2, -8] },
                                "down": { "uv": [9, 12], "uv_size": [-2, -8] }
                            }
                        },
                        {
                            "origin": [-1, 6, 8],
                            "size": [2, 3, 2],
                            "uv": {
                                "east": { "uv": [14, 7], "uv_size": [2, 3] },
                                "south": { "uv": [14, 7], "uv_size": [2, 3] },
                                "west": { "uv": [14, 7], "uv_size": [2, 3] },
                                "up": { "uv": [9, 2], "uv_size": [-2, -2] },
                                "down": { "uv": [9, 2], "uv_size": [-2, -2] }
                            }
                        }
                    ]
                }
            ]
        }
    ]
}

Applying Geometry & Textures

📝 BP/blocks/custom_fence.json

minecraft:blockcomponents

json

"minecraft:geometry": {
    "identifier": "geometry.custom_fence",
    "culling": "wiki:culling.custom_fence",
    "bone_visibility": {
        "north_rails": "q.block_state('minecraft:connection_north')",
        "south_rails": "q.block_state('minecraft:connection_south')",
        "west_rails": "q.block_state('minecraft:connection_west')",
        "east_rails": "q.block_state('minecraft:connection_east')"
    }
}

In this example, we will simply be applying a custom wooden planks texture to our fence, although you might instead like to create a special model and texture for your fence like bamboo fences have in vanilla.

📝 BP/blocks/custom_fence.json

minecraft:blockcomponents

json

"minecraft:material_instances": {
    "*": {
        "texture": "wiki:custom_planks"
    }
}

Item Visual

Next, we can use the minecraft:item_visual component to apply the item model to the block item:

📝 BP/blocks/custom_fence.json

minecraft:blockcomponents

json

"minecraft:item_visual": {
    "geometry": "geometry.custom_fence_carried",
    "material_instances": {
        "*": {
            "texture": "wiki:custom_planks"
        }
    }
}

Collision & Selection Boxes

Unlike geometry bones, collision and selection boxes cannot be individually enabled/disabled based on block states. This means we'll have to manually list the components for each block permutation making use of the permutations array.

📝 BP/blocks/custom_fence.json

minecraft:block

json

"permutations": [
    // Single connection
    {
        "condition": "q.block_state('minecraft:connection_north')",
        "components": {
            "minecraft:selection_box": {
                "origin": [-2, 0, -8],
                "size": [4, 16, 10]
            },
            "minecraft:collision_box": {
                "origin": [-2, 0, -8],
                "size": [4, 24, 10]
            }
        }
    },
    {
        "condition": "q.block_state('minecraft:connection_south')",
        "components": {
            "minecraft:selection_box": {
                "origin": [-2, 0, -2],
                "size": [4, 16, 10]
            },
            "minecraft:collision_box": {
                "origin": [-2, 0, -2],
                "size": [4, 24, 10]
            }
        }
    },
    {
        "condition": "q.block_state('minecraft:connection_west')",
        "components": {
            "minecraft:selection_box": {
                "origin": [-2, 0, -2],
                "size": [10, 16, 4]
            },
            "minecraft:collision_box": {
                "origin": [-2, 0, -2],
                "size": [10, 24, 4]
            }
        }
    },
    {
        "condition": "q.block_state('minecraft:connection_east')",
        "components": {
            "minecraft:selection_box": {
                "origin": [-8, 0, -2],
                "size": [10, 16, 4]
            },
            "minecraft:collision_box": {
                "origin": [-8, 0, -2],
                "size": [10, 24, 4]
            }
        }
    },
    // Two connections (axis-aligned)
    {
        "condition": "q.block_state('minecraft:connection_north') && q.block_state('minecraft:connection_south')",
        "components": {
            "minecraft:selection_box": {
                "origin": [-2, 0, -8],
                "size": [4, 16, 16]
            },
            "minecraft:collision_box": {
                "origin": [-2, 0, -8],
                "size": [4, 24, 16]
            }
        }
    },
    {
        "condition": "q.block_state('minecraft:connection_west') && q.block_state('minecraft:connection_east')",
        "components": {
            "minecraft:selection_box": {
                "origin": [-8, 0, -2],
                "size": [16, 16, 4]
            },
            "minecraft:collision_box": {
                "origin": [-8, 0, -2],
                "size": [16, 24, 4]
            }
        }
    },
    // Two connections (corner)
    {
        "condition": "q.block_state('minecraft:connection_north') && q.block_state('minecraft:connection_west')",
        "components": {
            "minecraft:selection_box": {
                "origin": [-2, 0, -8],
                "size": [10, 16, 10]
            },
            "minecraft:collision_box": [
                { "origin": [-2, 0, -8], "size": [4, 24, 10] },
                { "origin": [2, 0, -2], "size": [6, 24, 4] }
            ]
        }
    },
    {
        "condition": "q.block_state('minecraft:connection_north') && q.block_state('minecraft:connection_east')",
        "components": {
            "minecraft:selection_box": {
                "origin": [-8, 0, -8],
                "size": [10, 16, 10]
            },
            "minecraft:collision_box": [
                { "origin": [-2, 0, -8], "size": [4, 24, 10] },
                { "origin": [-8, 0, -2], "size": [6, 24, 4] }
            ]
        }
    },
    {
        "condition": "q.block_state('minecraft:connection_south') && q.block_state('minecraft:connection_west')",
        "components": {
            "minecraft:selection_box": {
                "origin": [-2, 0, -2],
                "size": [10, 16, 10]
            },
            "minecraft:collision_box": [
                { "origin": [-2, 0, -2], "size": [4, 24, 10] },
                { "origin": [2, 0, -2], "size": [6, 24, 4] }
            ]
        }
    },
    {
        "condition": "q.block_state('minecraft:connection_south') && q.block_state('minecraft:connection_east')",
        "components": {
            "minecraft:selection_box": {
                "origin": [-8, 0, -2],
                "size": [10, 16, 10]
            },
            "minecraft:collision_box": [
                { "origin": [-2, 0, -2], "size": [4, 24, 10] },
                { "origin": [-8, 0, -2], "size": [6, 24, 4] }
            ]
        }
    },
    // Three connections
    {
        "condition": "q.block_state('minecraft:connection_north') && q.block_state('minecraft:connection_south') && q.block_state('minecraft:connection_west')",
        "components": {
            "minecraft:selection_box": {
                "origin": [-2, 0, -8],
                "size": [10, 16, 16]
            },
            "minecraft:collision_box": [
                { "origin": [-2, 0, -8], "size": [4, 24, 16] },
                { "origin": [2, 0, -2], "size": [6, 24, 4] }
            ]
        }
    },
    {
        "condition": "q.block_state('minecraft:connection_north') && q.block_state('minecraft:connection_south') && q.block_state('minecraft:connection_east')",
        "components": {
            "minecraft:selection_box": {
                "origin": [-8, 0, -8],
                "size": [10, 16, 16]
            },
            "minecraft:collision_box": [
                { "origin": [-2, 0, -8], "size": [4, 24, 16] },
                { "origin": [-8, 0, -2], "size": [6, 24, 4] }
            ]
        }
    },
    {
        "condition": "q.block_state('minecraft:connection_north') && q.block_state('minecraft:connection_west') && q.block_state('minecraft:connection_east')",
        "components": {
            "minecraft:selection_box": {
                "origin": [-8, 0, -8],
                "size": [16, 16, 10]
            },
            "minecraft:collision_box": [
                { "origin": [-8, 0, -2], "size": [16, 24, 4] },
                { "origin": [-2, 0, -8], "size": [4, 24, 6] }
            ]
        }
    },
    {
        "condition": "q.block_state('minecraft:connection_south') && q.block_state('minecraft:connection_west') && q.block_state('minecraft:connection_east')",
        "components": {
            "minecraft:selection_box": {
                "origin": [-8, 0, -2],
                "size": [16, 16, 10]
            },
            "minecraft:collision_box": [
                { "origin": [-8, 0, -2], "size": [16, 24, 4] },
                { "origin": [-2, 0, 2], "size": [4, 24, 6] }
            ]
        }
    },
    // Four connections
    {
        "condition": "q.block_state('minecraft:connection_north') && q.block_state('minecraft:connection_south') && q.block_state('minecraft:connection_west') && q.block_state('minecraft:connection_east')",
        "components": {
            "minecraft:selection_box": {
                "origin": [-8, 0, -8],
                "size": [16, 16, 16]
            },
            "minecraft:collision_box": [
                { "origin": [-2, 0, -8], "size": [4, 24, 16] },
                { "origin": [-8, 0, -2], "size": [16, 24, 4] }
            ]
        }
    }
]

Final Block JSON

Example Custom Fence Block JSON

📝 BP/blocks/custom_fence.json

json

{
    "format_version": "1.26.40",
    "minecraft:block": {
        "description": {
            "identifier": "wiki:custom_fence",
            "traits": {
                "minecraft:connection": {
                    "enabled_states": ["minecraft:cardinal_connections"]
                }
            }
        },
        "components": {
            "minecraft:tags": [
                "minecraft:has_fence_connections",
                "minecraft:is_axe_item_destructible"
            ],
            "minecraft:destructible_by_explosion": {
                "explosion_resistance": 15
            },
            "minecraft:destructible_by_mining": {
                "seconds_to_destroy": 2
            },
            "minecraft:destruction_particles": {
                "particle_count": 48
            },
            "minecraft:flammable": {
                "catch_chance_modifier": 5,
                "destroy_chance_modifier": 20,
                "lava_flammable": "always"
            },
            "minecraft:connection_rule": {
                "accepts_connections_from": "only_fences"
            },
            "minecraft:support": {
                "shape": "fence"
            },
            "minecraft:geometry": {
                "identifier": "geometry.custom_fence",
                "culling": "wiki:culling.custom_fence",
                "bone_visibility": {
                    "north_rails": "q.block_state('minecraft:connection_north')",
                    "south_rails": "q.block_state('minecraft:connection_south')",
                    "west_rails": "q.block_state('minecraft:connection_west')",
                    "east_rails": "q.block_state('minecraft:connection_east')"
                }
            },
            "minecraft:material_instances": {
                "*": {
                    "texture": "wiki:custom_planks"
                }
            },
            // Item icon
            "minecraft:item_visual": {
                "geometry": "geometry.custom_fence_carried",
                "material_instances": {
                    "*": {
                        "texture": "wiki:custom_planks"
                    }
                }
            },
            // Prevents snow from accumulating above the fence
            "minecraft:precipitation_interactions": {
                "precipitation_behavior": "obstruct_rain"
            },
            // Allows the fence to be waterlogged
            "minecraft:liquid_detection": {
                "detection_rules": [
                    {
                        "liquid_type": "water",
                        "can_contain_liquid": true
                    }
                ]
            },
            // Allows leads to be attached to the fence
            "minecraft:leashable": {
                "offset": [0, 12, 0]
            },
            "minecraft:instrument_sound": {
                "up": "note.bassattack"
            },
            "minecraft:selection_box": {
                "origin": [-2, 0, -2],
                "size": [4, 16, 4]
            },
            "minecraft:collision_box": {
                "origin": [-2, 0, -2],
                "size": [4, 24, 4]
            }
        },
        "permutations": [
            // Single connection
            {
                "condition": "q.block_state('minecraft:connection_north')",
                "components": {
                    "minecraft:selection_box": {
                        "origin": [-2, 0, -8],
                        "size": [4, 16, 10]
                    },
                    "minecraft:collision_box": {
                        "origin": [-2, 0, -8],
                        "size": [4, 24, 10]
                    }
                }
            },
            {
                "condition": "q.block_state('minecraft:connection_south')",
                "components": {
                    "minecraft:selection_box": {
                        "origin": [-2, 0, -2],
                        "size": [4, 16, 10]
                    },
                    "minecraft:collision_box": {
                        "origin": [-2, 0, -2],
                        "size": [4, 24, 10]
                    }
                }
            },
            {
                "condition": "q.block_state('minecraft:connection_west')",
                "components": {
                    "minecraft:selection_box": {
                        "origin": [-2, 0, -2],
                        "size": [10, 16, 4]
                    },
                    "minecraft:collision_box": {
                        "origin": [-2, 0, -2],
                        "size": [10, 24, 4]
                    }
                }
            },
            {
                "condition": "q.block_state('minecraft:connection_east')",
                "components": {
                    "minecraft:selection_box": {
                        "origin": [-8, 0, -2],
                        "size": [10, 16, 4]
                    },
                    "minecraft:collision_box": {
                        "origin": [-8, 0, -2],
                        "size": [10, 24, 4]
                    }
                }
            },
            // Two connections (axis-aligned)
            {
                "condition": "q.block_state('minecraft:connection_north') && q.block_state('minecraft:connection_south')",
                "components": {
                    "minecraft:selection_box": {
                        "origin": [-2, 0, -8],
                        "size": [4, 16, 16]
                    },
                    "minecraft:collision_box": {
                        "origin": [-2, 0, -8],
                        "size": [4, 24, 16]
                    }
                }
            },
            {
                "condition": "q.block_state('minecraft:connection_west') && q.block_state('minecraft:connection_east')",
                "components": {
                    "minecraft:selection_box": {
                        "origin": [-8, 0, -2],
                        "size": [16, 16, 4]
                    },
                    "minecraft:collision_box": {
                        "origin": [-8, 0, -2],
                        "size": [16, 24, 4]
                    }
                }
            },
            // Two connections (corner)
            {
                "condition": "q.block_state('minecraft:connection_north') && q.block_state('minecraft:connection_west')",
                "components": {
                    "minecraft:selection_box": {
                        "origin": [-2, 0, -8],
                        "size": [10, 16, 10]
                    },
                    "minecraft:collision_box": [
                        { "origin": [-2, 0, -8], "size": [4, 24, 10] },
                        { "origin": [2, 0, -2], "size": [6, 24, 4] }
                    ]
                }
            },
            {
                "condition": "q.block_state('minecraft:connection_north') && q.block_state('minecraft:connection_east')",
                "components": {
                    "minecraft:selection_box": {
                        "origin": [-8, 0, -8],
                        "size": [10, 16, 10]
                    },
                    "minecraft:collision_box": [
                        { "origin": [-2, 0, -8], "size": [4, 24, 10] },
                        { "origin": [-8, 0, -2], "size": [6, 24, 4] }
                    ]
                }
            },
            {
                "condition": "q.block_state('minecraft:connection_south') && q.block_state('minecraft:connection_west')",
                "components": {
                    "minecraft:selection_box": {
                        "origin": [-2, 0, -2],
                        "size": [10, 16, 10]
                    },
                    "minecraft:collision_box": [
                        { "origin": [-2, 0, -2], "size": [4, 24, 10] },
                        { "origin": [2, 0, -2], "size": [6, 24, 4] }
                    ]
                }
            },
            {
                "condition": "q.block_state('minecraft:connection_south') && q.block_state('minecraft:connection_east')",
                "components": {
                    "minecraft:selection_box": {
                        "origin": [-8, 0, -2],
                        "size": [10, 16, 10]
                    },
                    "minecraft:collision_box": [
                        { "origin": [-2, 0, -2], "size": [4, 24, 10] },
                        { "origin": [-8, 0, -2], "size": [6, 24, 4] }
                    ]
                }
            },
            // Three connections
            {
                "condition": "q.block_state('minecraft:connection_north') && q.block_state('minecraft:connection_south') && q.block_state('minecraft:connection_west')",
                "components": {
                    "minecraft:selection_box": {
                        "origin": [-2, 0, -8],
                        "size": [10, 16, 16]
                    },
                    "minecraft:collision_box": [
                        { "origin": [-2, 0, -8], "size": [4, 24, 16] },
                        { "origin": [2, 0, -2], "size": [6, 24, 4] }
                    ]
                }
            },
            {
                "condition": "q.block_state('minecraft:connection_north') && q.block_state('minecraft:connection_south') && q.block_state('minecraft:connection_east')",
                "components": {
                    "minecraft:selection_box": {
                        "origin": [-8, 0, -8],
                        "size": [10, 16, 16]
                    },
                    "minecraft:collision_box": [
                        { "origin": [-2, 0, -8], "size": [4, 24, 16] },
                        { "origin": [-8, 0, -2], "size": [6, 24, 4] }
                    ]
                }
            },
            {
                "condition": "q.block_state('minecraft:connection_north') && q.block_state('minecraft:connection_west') && q.block_state('minecraft:connection_east')",
                "components": {
                    "minecraft:selection_box": {
                        "origin": [-8, 0, -8],
                        "size": [16, 16, 10]
                    },
                    "minecraft:collision_box": [
                        { "origin": [-8, 0, -2], "size": [16, 24, 4] },
                        { "origin": [-2, 0, -8], "size": [4, 24, 6] }
                    ]
                }
            },
            {
                "condition": "q.block_state('minecraft:connection_south') && q.block_state('minecraft:connection_west') && q.block_state('minecraft:connection_east')",
                "components": {
                    "minecraft:selection_box": {
                        "origin": [-8, 0, -2],
                        "size": [16, 16, 10]
                    },
                    "minecraft:collision_box": [
                        { "origin": [-8, 0, -2], "size": [16, 24, 4] },
                        { "origin": [-2, 0, 2], "size": [4, 24, 6] }
                    ]
                }
            },
            // Four connections
            {
                "condition": "q.block_state('minecraft:connection_north') && q.block_state('minecraft:connection_south') && q.block_state('minecraft:connection_west') && q.block_state('minecraft:connection_east')",
                "components": {
                    "minecraft:selection_box": {
                        "origin": [-8, 0, -8],
                        "size": [16, 16, 16]
                    },
                    "minecraft:collision_box": [
                        { "origin": [-2, 0, -8], "size": [4, 24, 16] },
                        { "origin": [-8, 0, -2], "size": [16, 24, 4] }
                    ]
                }
            }
        ]
    }
}

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Item JSON

Since our fence is made of wood, it should be able to be used as fuel in furnaces. Therefore, we need to add the minecraft:fuel component to the fence by replacing its block item as shown below:

📝 BP/items/custom_fence.json

json

{
    "format_version": "1.26.40",
    "minecraft:item": {
        "description": {
            "identifier": "wiki:custom_fence",
            "menu_category": {
                "category": "construction",
                "group": "minecraft:itemGroup.name.fence"
            }
        },
        "components": {
            "minecraft:block_placer": {
                "block": "wiki:custom_fence",
                "aligned_placement": true,
                "replace_block_item": true
            },
            "minecraft:fuel": {
                "duration": 3
            }
        }
    }
}

Contributors

Edit Custom Fences on GitHub

Text and image content on this page is licensed under the Creative Commons Attribution 4.0 International License

Code samples on this page are licensed under the MIT License

Custom Fences

Initial Block JSON ​

Fence Model ​

Block Model ​

Item Model ​

Applying Geometry & Textures ​

Item Visual ​

Collision & Selection Boxes ​

Final Block JSON ​

Item JSON ​

Contributors

Initial Block JSON

Fence Model

Block Model

Item Model

Applying Geometry & Textures

Item Visual

Collision & Selection Boxes

Final Block JSON

Item JSON