7194.f.null

I did this on Forge 47.1.44 first, I made ModDamageTypes interface by copying net.minecraft.world.damagesource.DamageTypes public interface ModDamageTypes { ResourceKey<DamageType> DEHYDRATION = ResourceKey.create(Registries.DAMAGE_TYPE, new ResourceLocation(MyModCommon.MODID, "dehydration") ); ResourceKey<DamageType> BEACON_BEAM = ResourceKey.create(Registries.DAMAGE_TYPE, new ResourceLocation(MymodCommon.MODID, "beacon_beam") ); } And then I made a ModDamageSources class by copying net.minecraft.world.damagesource.DamageSources public class ModDamageSources { private final Registry<DamageType> damageTypes; private final DamageSource dehydration; private final DamageSource beaconBeam; public ModDamageSources(RegistryAccess pRegistry) { this.damageTypes = pRegistry.registryOrThrow(Registries.DAMAGE_TYPE); this.dehydration = this.source(ModDamageTypes.DEHYDRATION); this.beaconBeam = this.source(ModDamageTypes.BEACON_BEAM); } private DamageSource source(ResourceKey<DamageType> pDamageTypeKey) { return new DamageSource(this.damageTypes.getHolderOrThrow(pDamageTypeKey)); } private DamageSource source(ResourceKey<DamageType> pDamageTypeKey, @Nullable Entity pEntity) { return new DamageSource(this.damageTypes.getHolderOrThrow(pDamageTypeKey), pEntity); } private DamageSource source(ResourceKey<DamageType> pDamageTypeKey, @Nullable Entity pCausingEntity, @Nullable Entity pDirectEntity) { return new DamageSource(this.damageTypes.getHolderOrThrow(pDamageTypeKey), pCausingEntity, pDirectEntity); } public DamageSource dehydration() { return this.dehydration; } public DamageSource beaconBeam() { return this.beaconBeam; } } In ModCommonEvents class @SubscribeEvent public static void onPlayerTick(TickEvent.PlayerTickEvent event) { if(event.side == LogicalSide.SERVER && !event.player.isCreative()) { event.player.getCapability(PlayerThirstProvider.PLAYER_THIRST) .ifPresent(thirst -> { if (thirst.getThirst() > 0 && event.player.getRandom().nextFloat() < 0.005f) { thirst.subThirst(1); ModNetworking.sendToPlayer( new ThirstDataSyncS2CPacket(thirst.getThirst()), () -> (ServerPlayer)event.player ); } if (thirst.getThirst() == 0 && event.player.getRandom().nextFloat() < 0.005f) { DamageSource dehydration = new ModDamageSources(event.player.level().registryAccess()).dehydration(); event.player.hurt(dehydration, 2f); } }); } } Also, in src/main/resources/data/mymod/damage_type/ there needs to be dehydration.json and beacon_beam.json { "exhaustion": 0.1, "message_id": "dehydration", "scaling": "never" } { "exhaustion": 0.1, "message_id": "beacon_beam", "scaling": "never" } And this will work in dev env copying vanilla minecraft can always get me somewhere, but I am pretty sure this is not the proper way to do this.