MC-79938Teleporting Up Still Builds Up Velocity
When being teleported up by a fast clock the players velocity consistently builds up on the split second in between where the players falling which can allow a player to die from fall damage falling from two blocks above the ground.
To test:
1. Make a new world (this device can get annoying and you probably won't want this in a world you use often)
2. Make the contraption in the picture (comparator clock with empty command block)
3. Put the command tp @p ~ ~2 ~ in the command block
4. When in survival mode turn the clock on and try jumping.
You can also witness this phenomenon when jumping from a height that would normally be fatal, but you use a teleport clock to teleport yourself slightly up so you fall gently to the ground. Except you won't fall gently because your velocity will still accumulate during the falling time.
I would suggest (as someone not familiar with professional programming) that the velocity be reset every time the player moves upward.
Also, you probably noticed there is a strange visual glitch when teleporting as well. Not sure if that is a separate issue or what...
Linked Issues
Attachments1
Created Issue:
Teleporting Up Still Builds Up Velocity
When being teleported up by a fast clock the players velocity consistenly builds up on the split second in between where the players falling which can allow a player to die from fall damage falling from two blocks above the ground.
To test:
1. Make a new world (this device can get annoying and you probably won't want this in a world you use often)
2. Make the contraption in the picture (comparator clock with empty command block)
3. Put the command tp @p ~ ~2 ~ in the command block
4. When in survival mode turn the clock on and try jumping.
You can also witness this phenomenon when jumping from a height that would normally be fatal, but you use a teleport clock to teleport yourself slightly up so you fall gently to the ground. Except you won't fall gently because your velocity will still accumulate during the falling time.
I would suggest (as someone not familiar with professional programming) that the velocity be reset every time the player moves upward.Also, you probably noticed there is a strange visual glitch when teleporting as well. Not sure if that is a separate issue or what...
Attachments1
When being teleported up by a fast clock the players velocity consistently builds up on the split second in between where the players falling which can allow a player to die from fall damage falling from two blocks above the ground.
To test:
1. Make a new world (this device can get annoying and you probably won't want this in a world you use often)
2. Make the contraption in the picture (comparator clock with empty command block)
3. Put the command tp @p ~ ~2 ~ in the command block
4. When in survival mode turn the clock on and try jumping.
You can also witness this phenomenon when jumping from a height that would normally be fatal, but you use a teleport clock to teleport yourself slightly up so you fall gently to the ground. Except you won't fall gently because your velocity will still accumulate during the falling time.
I would suggest (as someone not familiar with professional programming) that the velocity be reset every time the player moves upward.Also, you probably noticed there is a strange visual glitch when teleporting as well. Not sure if that is a separate issue or what...
is duplicated by
relates to
![[Mod] Greymagic27](../../../data/avatars/users/92875.png){kind=small}
is duplicated by
Confirmed for
- 15w51b
This is however not consistent for velocity caused by gravity. When you have for example a clock running /tp @p ~ ~1 ~, the player "bounces" instead of being teleported upwards constantly (see MC-79938)
Confirmed for
- 15w51b
This seems to not only affect FallDistance but also Motion. This can be seen when having a command block clock that teleports the player constantly upwards (for example /tp @p ~ ~1 ~), because of MC-79938 the player appears to "bounce", however when reopening the world the player is at a higher position than before.
Does MC-79938 describe your issue?
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My apologies. It seemed like a bug to me.
Relates to:
MC-14861