I would like to create a mod that can write player coordinates into a file. This mod should perform  regular checks (i.e. every 0.25 seconds or so) updating each time the player position information as well.

I know how to manipulate files in java, but im a complete beginner in minecraft modding so any help is appreciated.

1 hour ago, diesieben07 said:

Subscribe to ClientTickEvent.  Make sure to check TickEvent#type, the event fires twice per tick.

Then check the player's position (Minecraft#player.pos[XYZ]) and do whatever you want with it. Note that Minecraft#player will be null if you are not in a game.

Thank you! I'll try and see what i can do.