Custom Crops

{
    "format_version": "1.26.40",
    "minecraft:block": {
        "description": {
            "identifier": "wiki:custom_crop",
            "states": {
                "wiki:growth": {
                    "values": { "min": 0, "max": 7 }
                }
            }
        },
        "components": {
            "minecraft:tags": ["minecraft:crop"],
            "minecraft:collision_box": false,
            // Trigger growth on random ticks and when interacting with Bone Meal
            "wiki:crop_growth": {
                "growth_state": "wiki:growth",
                "max_growth": 7,
                // Require a light level of 9 or above in order to grow on random ticks
                "min_light_level": 9,
                // Match the growth speed of vanilla crops
                "farmland_search_range": 1,
                "farmland_speed_modifier": 1,
                "farmland_moisture_speed_modifier": 2,
                "neighboring_farmland_speed_multiplier": 0.25,
                "crowding_speed_multiplier": 0.5,
                // Add 2-5 growth stages at random when a non-creative mode player uses Bone Meal on the crop
                "growth_on_fertilize": [2, 5]
            },
            // Visuals
            "minecraft:destruction_particles": {
                "particle_count": 48
            },
            "minecraft:geometry": "geometry.custom_crop",
            "minecraft:material_instances": {
                "*": {
                    "texture": "wiki:custom_crop_0",
                    "render_method": "alpha_test_single_sided",
                    "ambient_occlusion": 0,
                    "face_dimming": false
                }
            },
            // Break the crop if it isn't placed on farmland
            "minecraft:placement_filter": {
                "conditions": [
                    {
                        "allowed_faces": ["up"],
                        "block_filter": ["minecraft:farmland"]
                    }
                ]
            },
            // Prevent rain from splashing and snow from accumulating on top of the block
            "minecraft:precipitation_interactions": {
                "precipitation_behavior": "none"
            },
            // Break the crop when water flows into it
            "minecraft:liquid_detection": {
                "detection_rules": [
                    {
                        "liquid_type": "water",
                        "on_liquid_touches": "popped"
                    }
                ]
            },
            // Break the crop when it is pushed by a piston
            "minecraft:movable": {
                "movement_type": "popped"
            },
            // Prevent blocks such as fences and glass panes from connecting
            "minecraft:connection_rule": {
                "accepts_connections_from": "none"
            }
        },
        "permutations": [
            {
                "condition": "q.block_state('wiki:growth') < 7",
                "components": {
                    // Loot table for when the crop is not fully grown; vanilla crops only drop seeds when young
                    "minecraft:loot": "loot_tables/wiki/blocks/custom_crop_young.json"
                }
            },
            {
                "condition": "q.block_state('wiki:growth') == 0",
                "components": {
                    "minecraft:selection_box": {
                        "origin": [-8, 0, -8],
                        "size": [16, 1.6, 16]
                    }
                }
            },
            {
                "condition": "q.block_state('wiki:growth') == 1",
                "components": {
                    "minecraft:selection_box": {
                        "origin": [-8, 0, -8],
                        "size": [16, 3.2, 16]
                    }
                }
            },
            {
                "condition": "q.block_state('wiki:growth') >= 2",
                "components": {
                    "minecraft:material_instances": {
                        "*": {
                            "texture": "wiki:custom_crop_1",
                            "render_method": "alpha_test_single_sided",
                            "ambient_occlusion": 0,
                            "face_dimming": false
                        }
                    }
                }
            },
            {
                "condition": "q.block_state('wiki:growth') == 2",
                "components": {
                    "minecraft:selection_box": {
                        "origin": [-8, 0, -8],
                        "size": [16, 4.8, 16]
                    }
                }
            },
            {
                "condition": "q.block_state('wiki:growth') == 3",
                "components": {
                    "minecraft:selection_box": {
                        "origin": [-8, 0, -8],
                        "size": [16, 6.4, 16]
                    }
                }
            },
            {
                "condition": "q.block_state('wiki:growth') >= 4",
                "components": {
                    "minecraft:material_instances": {
                        "*": {
                            "texture": "wiki:custom_crop_2",
                            "render_method": "alpha_test_single_sided",
                            "ambient_occlusion": 0,
                            "face_dimming": false
                        }
                    }
                }
            },
            {
                "condition": "q.block_state('wiki:growth') == 4",
                "components": {
                    "minecraft:selection_box": {
                        "origin": [-8, 0, -8],
                        "size": [16, 8, 16]
                    }
                }
            },
            {
                "condition": "q.block_state('wiki:growth') == 5",
                "components": {
                    "minecraft:selection_box": {
                        "origin": [-8, 0, -8],
                        "size": [16, 9.6, 16]
                    }
                }
            },
            {
                "condition": "q.block_state('wiki:growth') == 6",
                "components": {
                    "minecraft:selection_box": {
                        "origin": [-8, 0, -8],
                        "size": [16, 11.2, 16]
                    }
                }
            },
            {
                "condition": "q.block_state('wiki:growth') == 7",
                "components": {
                    "minecraft:material_instances": {
                        "*": {
                            "texture": "wiki:custom_crop_3",
                            "render_method": "alpha_test_single_sided",
                            "ambient_occlusion": 0,
                            "face_dimming": false
                        }
                    },
                    "minecraft:selection_box": {
                        "origin": [-8, 0, -8],
                        "size": [16, 12.8, 16]
                    },
                    // Drop different loot when fully grown
                    "minecraft:loot": "loot_tables/wiki/blocks/custom_crop_mature.json"
                }
            }
        ]
    }
}