Come 1.19.4, the main use case of this datapack has been made obsolete by the /damage command. Because of this, I will no longer be supporting or updating this datapack.
The remaining useful parts, mob true damage, player true damage, mob healing, and player healing have all been moved over to my utility datapack Black Box Library (BBL.)
You can find that here: https://github.com/RockNRui/Black-Box-Library
The below doccumentation is left as-is and any strange wording implying its usefulness will not be touched.
A minecraft datapack for 1.19.3 or lower to deal custom amounts of damage and healing to mobs and players.
Credits:
PearUhDox: True mob damage, normal player damage, and mob healing.
RockNRed: Normal mob damage, player healing, compilation, re-formatting/re-organization, and optimization.
gibbs: True player damage original tech.
GalacticAC: Normal player damage original tech concept.
This datapack aims to make it as easy as possible for a user to do custom amounts of damage or healing to a player or mobs for their own systems, with minimal technical knowledge required.
Drag & drop the datapack into your world's datapacks folder and /reload or /datapack enable "file/Common Damage Lib".
To uninstall the datapack, run /function cd:sys/uninstall and delete the datapack from your world's datapacks folder.
Then /reload and the uninstallation is complete. Make sure you do not run this command before the datapack is gone, else the system will simply re-install itself!
Important note: This datapack forceloads a chunk at (/tp @s 4206861 1 4206888 90 0) to store the iron golems used for custom damage. Be careful not to unload this.
Also included is a seperate datapack called cdl Examples. In it you can find pre-made examples of how to call all the types of damage and healing, as well as already set up custom death messages.
This datapack works by 2 scoreboards cdl.damage_queue and cdl.healing_queue. You set these values to the desired damage or healing amount for the desired entity.
Afterwards (Ideally in the same tick/function.), you run the respective function for the type of mob and damage you wish to do.
This is any combination of /function cd:lib/[mob or player]/[damage or healing]/[normal or true]
Some examples: /function cd:lib/mob/damage/true, /function cd:lib/player/damage/normal, /function cd:lib/mob/heal
This function must be ran AS and AT the entity you are damaging/healing.
I reccomend using the pre-made examples if learning by example is easier for you. Below is the more "manual" explanations and setup.
When a player dies to custom damage (Rather it be normal or true.) if showDeathMessages is set to true, you can have your own custom death messages.
To do this you must have the file custom_death_message.json in the minecraft/tags/functions namespace in your datapack. Inside it, place this:
{
"values": [
"foo:bar/custom_death_message"
]
}
Replacing foo:bar with your own datapack. You also need a function for this to call, which you can name whatever you want. Inside that place this:
execute if score @s cdl.death_id matches 1 run tellraw @a [{"selector":"@p"},{"text":" died to some \"NORMAL\" custom damage","color":"white"}]
You'll need 1 line for every custom death message.
You also need to set the ID of your custom death message when you call the damage to the player. This needs to be done BEFORE the function call itself. For example:
scoreboard players set @s cdl.damage_queue 10
scoreboard players set @s cdl.death_id 1
function cd:lib/player/damage/normal
Be careful not to overlap your ID with other datapacks that use this library!
You can find a pre-made example of all of this already working in the aforementioned example.