V1 Features
An entity will leave different colored blood spatters depending on its defined blood color. Out of the box all entities will default to a red color (this includes most modded entities as well), but any entity can be configured to have any blood type. In the mod's config there will be some default overrides such as spider blood being green and enderman blood being purple.
Blood spatters will slowly slide down when on a wall.
When blood spatters on the ceiling it will begin to drip.
When a blood spatter comes into contact with water (rain or a body of water) it will wash away.
WORK IN PROGRESS. I'm remaking this entire system as it didn't play nice with a lot of mods and entities in general. There may be some more updates relating to this system in the future. Stay tuned!