Extend Foundry VTT Combat with custom initiative formulas and hooks.
npx skills add https://github.com/ImproperSubset/hh-agentics --skill fvtt-combat
Please help me install this Agent Skill. Skill: fvtt-combat Source: https://github.com/ImproperSubset/hh-agentics/tree/main/fvtt-dev/skills/fvtt-combat Command: npx skills add https://github.com/ImproperSubset/hh-agentics --skill fvtt-combat
This skill provides structured patterns for building and extending Foundry VTT's Combat system, including Combat, Combatant documents, initiative handling, and combat hooks such as combatStart, combatTurn, and combatRound.
High-intent search queries and answers about installing and using this skill.
Foundry VTT combat hooks like combatStart, combatTurn, and combatRound trigger at specific lifecycle stages of an encounter. You register listeners for these hooks to automate per-turn effects, update the UI, or execute event-driven behavior whenever a round or turn advances.
You add per-turn effects by registering a hook listener for combatTurn within your Foundry module or system. This allows your code to execute automated logic and apply specific status effects precisely when each combatant's turn begins during the active encounter.
Yes, you can extend Foundry VTT Combatant documents by subclassing the base Combatant class. This provides a clean extension path to implement consistent, custom combat behavior and state tracking for individual actors across multiple scenes and encounters.
Yes, extending the Foundry combat system requires familiarity with Foundry's Combat APIs and document structure. You need to understand JavaScript class inheritance to subclass Combat and configure CONFIG.Combat.documentClass correctly.
Overriding _getInitiativeFormula() in a Foundry VTT combat system allows you to replace the default dice roll calculation with custom logic. This is necessary when your system requires specialized initiative rules based on specific actor attributes or game mechanics.
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