I have been breeding horses and gathering wild ones and testing them thoroughly for run speed and jump height. I have been trying to breed faster higher jumpers. I have two "breeder" horses, one with a jump height of 5-1/8 blocks and the other with a jump height of 4-3/8. After updating to 1.9 the 5-1/8 jumper now only jumps 4-5/8 blocks and the 4-3/8 only jumps 3-7/8 blocks.
Run speed and health have not changed. Is this a bug with 1.9 or was the jump-height mechanic changed/nerfed?
Comments 9
I'm so glad you reported this issue, when my friend and I had the same problem we googled to see if anyone else had noticed the same and this showed up.
I have an extensive Pony Shop set up on the server I play where we measure Speed, Jump and Health on a spreadsheet which is unedited from time of measurement. A horse I knew for definite was a 5 jump from 1.8.9 was now only jumping 4.5 blocks.
I hope this can be fixed as it does seem to be affecting the breeding.
I just re-tested this in 1.9.4 and the behaviour is exactly as in 1.9.2. I was hoping the fix for the horses on leads may affect this, but unfortunately not.
Max jump height is still down from where it should be.
Probably this is because in 1.9, they lowered a lot of mobs (including the horse). As far as I know, jump is calculated using the hitbox hight and eye level, and some other parameters. So you can expect it to stay changed until the next calculation/hitbox update, which cannot be done in 1.9.x because of server-client compatibility. Luckily for you, Mojang announced that the first snapshot of 1.10 is going to be released soon.
New Update:
Using the "Standard" horse from above:
/summon EntityHorse ~0 ~1 ~0 {Attributes:[{Name:generic.maxHealth,Base:24.000},{Name:generic.movementSpeed,Base:0.3375},{Name:horse.jumpStrength,Base:1.0}],Type:0,Tame:1,SaddleItem:{id:329}}And the layered snow to test (see above)
In 1.10.2 the jumpheight is now exactly 5.125 blocks high. down 1/8 from 1.9. and 3/8 blocks lower than it should be. This adversely affects breeding, and penalizes the existing horses from prior versions.
Confirmed in 1.11.2
/summon Horse ~0 ~1 ~0 {Attributes:[{Name:generic.maxHealth,Base:24.000},{Name:generic.movementSpeed,Base:0.3375},{Name:horse.jumpStrength,Base:1.0}],Type:0,Tame:1,SaddleItem:{id:329}}in 1.11.2 using the command above (Note the change from EntityHorse to just Horse) summons a horse without a saddle, but it is tamed and when equipped with a saddle now jumps exactly 5-1/8 blocks as in 1.10.2.
Is this still a issue in the latest version of the game(currently 1.13.1)?
If so, please add it to the affected versions, thanks!
Cannot confirm for 1.17.1.
Command used:
/summon horse ~ ~1 ~ {Tame:1b,Variant:0,Attributes:[{Name:generic.max_health,Base:50},{Name:generic.movement_speed,Base:0.3375},{Name:horse.jump_strength,Base:1.0}],SaddleItem:{id:"minecraft:saddle",Count:1b},ArmorItem:{}}Horse jumps over 5.25 height (5 blocks + 3 snow layers); according to the English Wiki, a Horse with a Jump Strength of 1.0 should jump about 5.293 blocks; I added another snow layer, and didn't manage to make it jump higher, but the 5.25 and presumably ~5.29 is what it can do.
Hence I'd think this bugpost can be closed, but I'll (have to anyway) keep an eye on HorseStats.
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I did some extensive checking on this by placing down 5 solid blocks and then stacking layers of snow on them. in 1/8 block increments.
I used this command to summon a "standard" horse.
I did this in both a clean 1.9 creative world and in a 1.8.9 creative world.
This horse should be able to jump exactly 5.5 blocks according to the wiki, but in 1.8.9 he can jump exactly 5.875 blocks
and in 1.9 he can jump precisely 5.25 blocks.
I tested it both in creative and survival. I also double checked the height from the ground level. In 1,9 a single layer of snow is still 0 height. two layers give 1/8 block height. This is the same as 1.8.9.