Hey,

as you can read from the title i want to slow the player down, using my clientside mod.

So far i tried changing the player capability, motionX/motionZ and giving the player slowness. Either i did something wrong when testing or those dont work in this scenario.

 

Thanks in advance.

How are you attempting to give the player slowness? I have not tested it, but the following code should work:

Minecraft.getMinecraft().thePlayer.addPotionEffect(new PotionEffect(Potion.getPotionById(2), 1));

Of course, instead of Minecraft.getMinecraft().thePlayer, you would use a given reference to an EntityPlayer if possible.