Fall damage is consistently inconsistent, in that it doesn't deal the damage it should.
Expected: (Length of fall in blocks) - 3 = Damage (1 = half a heart)
In other words, 4 blocks will deal half a heart of damage. 23 blocks is fatal to a player or an unarmored humanoid mob.
What happens: The problem occurs as you approach the maximum height before death. At 22 blocks, you will be left with 18 health, rather than 19. A fall of 23 is still fatal.
This was tested extensively with varying heights, not restricted to full blocks.
A water flow pushes creepers off a cliff. It is a well known fact that mobs may jump in water before the fall, so by using trapdoors to lower the roof, they are held down, preventing this random factor.
The block they land on was switched for a slab, as well as all 8 possible layers of snow. The results were still the same: Either they are left with 18 health, or they die instantly.
They never end at 19 health.
This should not be possible. However, it may be related to water, as you can achieve 19 points of damage if you push it off the cliff without water, provided the mob does not jump.
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You're right. The half hearts confuse me. Mistake on my part.
When I say 19½ I mean just 19, while 19 would be 18. I'll change it.
Also note that you may not be able to reproduce by jumping off a cliff yourself. I tested it with Creepers in a controlled environment. Creepers have 20 health, and by falling the correct distance, should be left with 1 health. In order to verify this, I simply attack them barehanded afterwards, which is known to do 1 point of damage. Yet I had to hit them twice if they survived, which means they were left with 18 health.
I've got inconsistent fall damage, but I can't reproduce. Switched from creative to survival one block above the ground, had full health + full diamond armour, got killed. Dunno why, can't reproduce now. 1.5.1. (Thought this would go here as it;s about inconsistent fall damage)
This is still an issue in Minecraft version 14w03b, 14w11b.
However, falling 22 blocks damages you by 19 health now, just like falling 23 blocks.
A 24 block fall still kills you.
Is this still a concern in the current Minecraft version? If so, please update the affected versions in order to best aid Mojang ensuring bugs are still valid in the latest releases/pre-releases. If this has been done, we can reopen the issue.
Keep in mind that the "Resolved"-Status on this ticket just means "Answered", and that we are waiting for further information on whether this issue still exists or not. We will reopen it as soon as the requested information has been deliviered.
Cannot reproduce.