# AI
在本节中，我们回顾学习实体的AI控制。
# 在编辑器中添加
依旧以守卫实体为例，我们可以看到在行为包组件中添加了很多以“行为.”开头的组件。这些组件便是与AI行为有关的组件。
我们也可以自行添加更多的其他行为。这些行为组件英文都是以behavior.开头。
# 实际文件
我们来观察守卫实体的行为包定义文件：
{
"format_version": "1.20.10",
"minecraft:entity": {
"component_groups": {
"minecraft:can_break_doors": {
"minecraft:annotation.break_door": {
}
},
"minecraft:can_have_equipment": {
"minecraft:equipment": {
"table": "loot_tables/entities/zombie_equipment.json"
}
},
"minecraft:convert_to_baby_drowned": {
"minecraft:is_shaking": {
},
"minecraft:transformation": {
"delay": {
"value": 15
},
"drop_equipment": true,
"into": "minecraft:drowned<minecraft:as_baby>",
"transformation_sound": "convert_to_drowned"
}
},
"minecraft:convert_to_drowned": {
"minecraft:is_shaking": {
},
"minecraft:transformation": {
"delay": {
"value": 15
},
"drop_equipment": true,
"into": "minecraft:drowned<minecraft:as_adult>",
"transformation_sound": "convert_to_drowned"
}
},
"minecraft:look_to_start_drowned_transformation": {
"minecraft:environment_sensor": {
"triggers": {
"event": "minecraft:start_transforming",
"filters": {
"operator": "==",
"subject": "self",
"test": "is_underwater",
"value": true
}
}
}
},
"minecraft:start_drowned_transformation": {
"minecraft:environment_sensor": {
"triggers": {
"event": "minecraft:stop_transforming",
"filters": {
"operator": "==",
"subject": "self",
"test": "is_underwater",
"value": false
}
}
},
"minecraft:timer": {
"looping": false,
"time": 30,
"time_down_event": {
"event": "minecraft:convert_to_drowned"
}
}
},
"minecraft:zombie_adult": {
"minecraft:behavior.mount_pathing": {
"priority": 2,
"speed_multiplier": 1.25,
"target_dist": 0.0,
"track_target": true
},
"minecraft:experience_reward": {
"on_death": "query.last_hit_by_player ? 5 + (query.equipment_count * Math.Random(1,3)) : 0"
},
"minecraft:movement": {
"value": 0.23
},
"minecraft:rideable": {
"family_types": [
"zombie"
],
"seat_count": 1,
"seats": {
"lock_rider_rotation": 0,
"position": [
0.0,
1.1,
-0.35
]
}
}
},
"minecraft:zombie_baby": {
"minecraft:experience_reward": {
"on_death": "query.last_hit_by_player ? 12 + (query.equipment_count * Math.Random(1,3)) : 0"
},
"minecraft:is_baby": {
},
"minecraft:movement": {
"value": 0.35
},
"minecraft:scale": {
"value": 0.5
}
},
"minecraft:zombie_jockey": {
"minecraft:behavior.find_mount": {
"max_failed_attempts": 20,
"priority": 1,
"start_delay": 15,
"within_radius": 16
}
}
},
"components": {
"minecraft:behavior.delayed_attack": {
"attack_duration": 1.0
},
"minecraft:behavior.equip_item": {
"priority": 2
},
"minecraft:behavior.hurt_by_target": {
"priority": 1
},
"minecraft:behavior.look_at_player": {
"look_distance": 6,
"priority": 8,
"probability": 0.02
},
"minecraft:behavior.melee_attack": {
"priority": 3
},
"minecraft:behavior.nearest_attackable_target": {
"entity_types": [
{
"filters": {
"any_of": [
{
"subject": "other",
"test": "is_family",
"value": "player"
},
{
"subject": "other",
"test": "is_family",
"value": "snowgolem"
},
{
"subject": "other",
"test": "is_family",
"value": "irongolem"
}
]
},
"max_dist": 35
},
{
"filters": {
"any_of": [
{
"subject": "other",
"test": "is_family",
"value": "villager"
},
{
"subject": "other",
"test": "is_family",
"value": "wandering_trader"
}
]
},
"max_dist": 35,
"must_see": false
},
{
"filters": {
"all_of": [
{
"subject": "other",
"test": "is_family",
"value": "baby_turtle"
},
{
"operator": "!=",
"subject": "other",
"test": "in_water",
"value": true
}
]
},
"max_dist": 35
}
],
"must_see": true,
"must_see_forget_duration": 17.0,
"priority": 2,
"reselect_targets": true,
"within_radius": 25.0
},
"minecraft:behavior.pickup_items": {
"can_pickup_any_item": true,
"excluded_items": [
"minecraft:glow_ink_sac"
],
"goal_radius": 2,
"max_dist": 3,
"pickup_based_on_chance": true,
"priority": 6,
"speed_multiplier": 1.0
},
"minecraft:behavior.random_look_around": {
"priority": 9
},
"minecraft:behavior.random_stroll": {
"priority": 7,
"speed_multiplier": 1
},
"minecraft:behavior.stomp_turtle_egg": {
"goal_radius": 1.14,
"interval": 20,
"priority": 4,
"search_height": 2,
"search_range": 10,
"speed_multiplier": 1
},
"minecraft:breathable": {
"breathes_air": true,
"breathes_water": true,
"suffocate_time": 0,
"total_supply": 15
},
"minecraft:burns_in_daylight": {
},
"minecraft:can_climb": {
},
"minecraft:collision_box": {
"height": 1.9,
"width": 0.6
},
"minecraft:conditional_bandwidth_optimization": {
},
"minecraft:despawn": {
"despawn_from_distance": {
}
},
"minecraft:environment_sensor": {
"triggers": {
"event": "minecraft:start_transforming",
"filters": {
"operator": "==",
"test": "is_underwater",
"value": true
}
}
},
"minecraft:equip_item": {
},
"minecraft:health": {
"max": 40,
"value": 40
},
"minecraft:hurt_on_condition": {
"damage_conditions": [
{
"cause": "lava",
"damage_per_tick": 4,
"filters": {
"operator": "==",
"subject": "self",
"test": "in_lava",
"value": true
}
}
]
},
"minecraft:is_hidden_when_invisible": {
},
"minecraft:jump.static": {
},
"minecraft:loot": {
"table": "loot_tables/entities/zombie.json"
},
"minecraft:movement.basic": {
},
"minecraft:nameable": {
},
"minecraft:navigation.walk": {
"can_break_doors": true,
"can_pass_doors": true,
"can_walk": true,
"is_amphibious": true
},
"minecraft:persistent": {
},
"minecraft:physics": {
},
"minecraft:pushable": {
"is_pushable": true,
"is_pushable_by_piston": true
},
"minecraft:shareables": {
"items": [
{
"item": "minecraft:netherite_sword",
"priority": 0,
"surplus_amount": 1,
"want_amount": 1
},
{
"item": "minecraft:diamond_sword",
"priority": 1,
"surplus_amount": 1,
"want_amount": 1
},
{
"item": "minecraft:iron_sword",
"priority": 2,
"surplus_amount": 1,
"want_amount": 1
},
{
"item": "minecraft:stone_sword",
"priority": 3,
"surplus_amount": 1,
"want_amount": 1
},
{
"item": "minecraft:golden_sword",
"priority": 4,
"surplus_amount": 1,
"want_amount": 1
},
{
"item": "minecraft:wooden_sword",
"priority": 5,
"surplus_amount": 1,
"want_amount": 1
},
{
"item": "minecraft:netherite_helmet",
"priority": 0,
"surplus_amount": 1,
"want_amount": 1
},
{
"item": "minecraft:diamond_helmet",
"priority": 1,
"surplus_amount": 1,
"want_amount": 1
},
{
"item": "minecraft:iron_helmet",
"priority": 2,
"surplus_amount": 1,
"want_amount": 1
},
{
"item": "minecraft:chainmail_helmet",
"priority": 3,
"surplus_amount": 1,
"want_amount": 1
},
{
"item": "minecraft:golden_helmet",
"priority": 4,
"surplus_amount": 1,
"want_amount": 1
},
{
"item": "minecraft:leather_helmet",
"priority": 5,
"surplus_amount": 1,
"want_amount": 1
},
{
"item": "minecraft:turtle_helmet",
"priority": 6,
"surplus_amount": 1,
"want_amount": 1
},
{
"item": "minecraft:skull:0",
"priority": 7,
"surplus_amount": 1,
"want_amount": 1
},
{
"item": "minecraft:skull:1",
"priority": 7,
"surplus_amount": 1,
"want_amount": 1
},
{
"item": "minecraft:carved_pumpkin",
"priority": 7,
"surplus_amount": 1,
"want_amount": 1
},
{
"item": "minecraft:netherite_chestplate",
"priority": 0,
"surplus_amount": 1,
"want_amount": 1
},
{
"item": "minecraft:diamond_chestplate",
"priority": 1,
"surplus_amount": 1,
"want_amount": 1
},
{
"item": "minecraft:iron_chestplate",
"priority": 2,
"surplus_amount": 1,
"want_amount": 1
},
{
"item": "minecraft:chainmail_chestplate",
"priority": 3,
"surplus_amount": 1,
"want_amount": 1
},
{
"item": "minecraft:golden_chestplate",
"priority": 4,
"surplus_amount": 1,
"want_amount": 1
},
{
"item": "minecraft:leather_chestplate",
"priority": 5,
"surplus_amount": 1,
"want_amount": 1
},
{
"item": "minecraft:netherite_leggings",
"priority": 0,
"surplus_amount": 1,
"want_amount": 1
},
{
"item": "minecraft:diamond_leggings",
"priority": 1,
"surplus_amount": 1,
"want_amount": 1
},
{
"item": "minecraft:iron_leggings",
"priority": 2,
"surplus_amount": 1,
"want_amount": 1
},
{
"item": "minecraft:chainmail_leggings",
"priority": 3,
"surplus_amount": 1,
"want_amount": 1
},
{
"item": "minecraft:golden_leggings",
"priority": 4,
"surplus_amount": 1,
"want_amount": 1
},
{
"item": "minecraft:leather_leggings",
"priority": 5,
"surplus_amount": 1,
"want_amount": 1
},
{
"item": "minecraft:netherite_boots",
"priority": 0,
"surplus_amount": 1,
"want_amount": 1
},
{
"item": "minecraft:diamond_boots",
"priority": 1,
"surplus_amount": 1,
"want_amount": 1
},
{
"item": "minecraft:iron_boots",
"priority": 2,
"surplus_amount": 1,
"want_amount": 1
},
{
"item": "minecraft:chainmail_boots",
"priority": 3,
"surplus_amount": 1,
"want_amount": 1
},
{
"item": "minecraft:golden_boots",
"priority": 4,
"surplus_amount": 1,
"want_amount": 1
},
{
"item": "minecraft:leather_boots",
"priority": 5,
"surplus_amount": 1,
"want_amount": 1
}
],
"singular_pickup": true
},
"minecraft:type_family": {
"family": [
"zombie",
"undead",
"monster",
"mob"
]
}
},
"description": {
"identifier": "test:guard",
"is_experimental": false,
"is_spawnable": true,
"is_summonable": true
},
"events": {
"minecraft:as_adult": {
"add": {
"component_groups": [
"minecraft:zombie_adult"
]
}
},
"minecraft:as_baby": {
"add": {
"component_groups": [
"minecraft:zombie_baby"
]
}
},
"minecraft:convert_to_drowned": {
"sequence": [
{
"add": {
"component_groups": [
"minecraft:convert_to_drowned"
]
},
"filters": {
"operator": "!=",
"test": "has_component",
"value": "minecraft:is_baby"
},
"remove": {
"component_groups": [
"minecraft:start_drowned_transformation"
]
}
},
{
"add": {
"component_groups": [
"minecraft:convert_to_baby_drowned"
]
},
"filters": {
"test": "has_component",
"value": "minecraft:is_baby"
},
"remove": {
"component_groups": [
"minecraft:start_drowned_transformation"
]
}
}
]
},
"minecraft:entity_spawned": {
"sequence": [
{
"randomize": [
{
"add": {
"component_groups": [
"minecraft:zombie_adult",
"minecraft:can_have_equipment"
]
},
"remove": {
},
"weight": 380
},
{
"add": {
"component_groups": [
"minecraft:zombie_baby",
"minecraft:can_have_equipment"
]
},
"remove": {
},
"weight": 17
},
{
"add": {
"component_groups": [
"minecraft:zombie_baby",
"minecraft:zombie_jockey",
"minecraft:can_have_equipment"
]
},
"remove": {
},
"weight": 3
}
]
},
{
"randomize": [
{
"add": {
"component_groups": [
"minecraft:can_break_doors"
]
},
"weight": 10
},
{
"weight": 90
}
]
}
]
},
"minecraft:start_transforming": {
"add": {
"component_groups": [
"minecraft:start_drowned_transformation"
]
},
"remove": {
"component_groups": [
"minecraft:look_to_start_drowned_transformation"
]
}
},
"minecraft:stop_transforming": {
"add": {
"component_groups": [
"minecraft:look_to_start_drowned_transformation"
]
},
"remove": {
"component_groups": [
"minecraft:start_drowned_transformation"
]
}
}
}
}
}
这相当的复杂，但我们仔细观察，依旧可以在components下找到minecraft:behavior.开头的相关组件。这边是与编辑器中行为组件相对应的实际文件中的实体组件。特别地，这样的组件被称为AI意向（AI Goal）组件。
比如，最上方的minecraft:behavior.delayed_attack便代表实体具有延迟攻击意向。你可以在官方参考文档国际版 - 实体AI意向列表 (opens new window)中找到所有AI意向的列表。
每一个AI意向都可选地接受一个priority字段，代表该意向的优先级，优先级以值更小的为更优先。每一个AI意向也可选地接受一个control_flags数组，其中可以添加字符串look、move、jump，用于调整该意向使用的控制旗标。大部分意向的控制旗标是默认选择好的，但对于某一些意向来说，精准调整控制旗标有助于精准控制意向触发的时机，例如minecraft:behavior.timer_flag_1、minecraft:behavior.timer_flag_2、minecraft:behavior.timer_flag_3等计时器意向。
关于生物AI意向的相关机制内容，可以参考Minecraft Wiki上的生物AI (opens new window)页面，学习相关内容。