Hello! I'm actually doing the Harry Potter Spells in Minecraft and I want to reproduce the Four Point Spell.

The concept is easy: it points the player to the north.

Here is what I tried : 

    @Override
    public boolean onCast(PlayerEntity playerIn, int playerPower) {
        playerIn.setLocationAndAngles(playerIn.getPosX(), playerIn.getPosY(), playerIn.getPosZ(), 180F, 0);
        playerIn.setHeadRotation(180F, 0);
        playerIn.rotationYaw = 180F;
        playerIn.rotationPitch = 0;
        return true;
    }

Thank you for your help. 

I resolved it like this :

    @Override
    public boolean onCast(PlayerEntity playerIn, int playerPower) {
        playerIn.rotationYaw = 180F;
        playerIn.rotationPitch = 0;
        playerIn.setPositionAndUpdate(playerIn.getPosX(), playerIn.getPosY(), playerIn.getPosZ());
        return true;
    }