This is the online version of the HexAutomata documentation.

Reactive Focus

I found a way - using the intelligence from a settled villager mind, with some special "concepts" from wild creatures - to create a kind of special spell-casters: Reactive Focus.
These spell holders act like normal focus when reading/writing, while their inner spells get triggered when certain situations happen, drawing media from me directly when casting.

Each type of Reactive Focus also sends iota(s) to the initial stack when they're triggered, this usually contains the triggering entity as the first iota.
Additionally, due to Quantum Media Entanglement effect between me and whoever triggers a Reactive Focus, the inner spell has an extra casting ambit of small radius around whom. How convenient :)

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Hurt

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Triggers whenever I get hurt, with the damage causer (could be null) and amount as initial iotas.

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Targeted

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Triggers at the moment an enemy targets me, with the enemy as initial iota.

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Projectile Shot

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Triggers when I shoot a projectile (arrow, snowball, etc.), with the projectile as initial iota.

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Projectile Hit

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Triggers when a projectile I shot hits something; receives 3 initial iotas: the projectile, where it hits, and the target block position or entity it hits.

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Melee Hit

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Triggers when I hit a target by hand or using melee weapon; receives the target entity and damage value as initial iotas.

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Killing

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Triggers when I kill something; receives the dying target as initial iota.

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Teleported

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Triggers when I'm about to be teleported; receives the previous and target position as two initial iotas.
In addition, I'll have small ranges of casting ambit around both positions during this cast.

That said, even Quantum Media Entanglement has its limits: accessing the Quantum Sea too frequently risks collapsing reality and breaks further connections for a short period (about 1/20 seconds). This won't happen often, but there are indeed ways to encounter or even invite that risk.

Reactive Focus Nexus

Information is flexible, reformable, elastic... information is more information... information is me...
I'm able to hold more information, by building a library, with more details, with a relay... I'm the library.

One Reactive Focus Nexus holds up to 8 Reactive Focuses; when I take a Nexus with me, I still feel the connections between me and those Focuses inside.

Reactive Focus Nexus

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The Library for a Reactive Focus Nexus

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Reactive Focus Nexus

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After building the library, merge it with a multi-threaded mind to do the final compression

Spells Inside Reactive Focus

Using Quantum Media Entanglement effect between me and the triggerer, there are several tricks I can play with exclusively inside an event of Reactive Focus.
However, I have the feeling that, if I cast these spells outside the Focus, something REALLY BAD might happen.