This projects adds a robust, dynamic spell casting system.

Use a catalyst in your offhand to cast a spell from an item in your mainhand.

For this data pack to work, the vanilla ender eye behavior has been disabled, so you can't use them to find the stronghold.

This library shows cool down visually using the mc-silica resource pack.

Make sure to use the mc-silica resource pack for your spells to display the cool down.

Merge this data pack with your data pack or use it as an external data pack.

mc-bismuth uses spell haste and not a percentage cool down reduction. spell haste uses the same calculation that ability haste in league of legends uses and is therefore calculated like this:

remaining_cool_down = ( cool_down *  100 ) / ( 100 + spell_haste )

First, you need to create a spell dictionary function in your pack that is used detemine the spell, that should be executed. To create such a function you can look at the template_spell_dictionary function in main.bolt.

When the spell dictionary is called and is calling your spells, you have access to the following information:

To put the executed spell on cool down, you can set the score .cooldown bismuth to the cool down in ticks and use the bismuth:cool_down/set function to apply it.

Create the spell dictionary function and register it to the bismuth:spell_dictionary function tag:

/data/bismuth/tags/functions/spell_dictionary.json

{
    "values": [
        "<namespace>:<path to your function>"
    ]
}

You can use the items.bolt file as a guide to create loot tables, that give yourself catalyst- and spell items. If you use beet and bolt yourself, you can just copy the file and use it in your project.

Alernatively you could use a give command like the following ones:

give @s minecraft:ender_eye{bismuth.catalyst:1b,CustomModelData:123456,magn:{spell_haste:15},AttributeModifiers:[{AttributeName:"generic.luck",Name:"tungsten.offhand",Amount:-0.000000000001,Operation:0,UUID:[I;12,42069,-0,11],Slot:"offhand"}]}

This command gives the player a catalyst, that is an ender eye with the CustomModelData 123456 and a spell haste of 15.

give @s minecraft:leather_horse_armor{CustomModelData:654321,magn:{spell_id:42069},AttributeModifiers:[{AttributeName:"generic.luck",Name:"tungsten.mainhand",Amount:-0.000000000001,Operation:0,UUID:[I;12,42069,-0,10],Slot:"mainhand"}]}

This command gives the player a catalyst, that is an ender eye with the CustomModelData 654321 and a spell id of 42069.

The resource pack used to show the cool down visually. If you are not using this resource pack it will not look correct.

• mc-silica

No need to download these, they are included in the final data pack.

• mc-magnesium
• mc-tungsten

This project is written using the following but if you just want to use this library, you don't need to download these.

• beet
• bolt
• mecha

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