bedrock-samples/resource_pack/animation_controllers/skeleton.animation_controllers.json

{
	"format_version" : "1.10.0",
	"animation_controllers" : {
		"controller.animation.skeleton.attack" : {
			"initial_state" : "default",
			"states" : {
				"default" :  {
					"transitions" : [
						{
							"attack" : "query.has_target && !query.facing_target_to_range_attack"
						}
					]
				},
				"attack" : {
					"animations": [ "skeleton_attack" ],
					"transitions" : [
						{
							"default" : "!query.has_target || query.facing_target_to_range_attack"
						}
					]
				}
			}
		}
	}
}