Fix horse velocity calculations

[mistrk7]

Monentum is done in the dumb way in Minecraft, where W key += forward momentum, D key += side momentum, etc. It makes walking sideways faster than what the velocity implies.

It's not normally an issue but at faster speeds like with horses it's noticable and you have to deal with it, which bothers me. This is how momentum is supposed to be calculated in games:

angle -= pi / 2;

velocity_x = cos(angle) * speed;
velocity_y = sin(angle) * speed;

please add this to horses

good luck implementing 😏 I bet you can't noob 💀

[CodeF53]

Slowing down horses would be an awful feature.

[mistrk7]

Then do this and increase their speed by like 1.1x or something. I hate having to run sideways