@yantra-core/sutra/examples/boss-fight.js

A JavaScript behavior tree library for easily creating and managing complex behavior patterns in game development.

import Sutra from '../lib/sutra.js';

const bossFightBehavior = new Sutra();

// Adding conditions equivalent to xstate guards
bossFightBehavior.addCondition('isBossDamaged', () => {
  // Logic to check if the boss is damaged
});
bossFightBehavior.addCondition('isBossDefeated', () => {
  // Logic to check if the boss is defeated
});

// Adding actions equivalent to xstate actions
bossFightBehavior.addAction({
  if: 'game::start',
  then: [{ action: 'startBossFight' }]
});

bossFightBehavior.addAction({
  if: 'entity::damage',
  then: [
    {
      if: 'isBossDamaged',
      then: [{ action: 'updateEntity' }],
    }
  ],
  else: [
    {
      if: 'entity::remove',
      then: [
        {
          if: 'isBossDefeated',
          then: [{ action: 'endRound' }]
        }
      ]
    }
  ]
});

bossFightBehavior.addAction({
  if: 'COMPLETE_UPDATE',
  then: [{ action: 'returnToActive' }]
});

bossFightBehavior.addAction({
  if: 'START_NEW_ROUND',
  then: [{ action: 'restartIdle' }]
});

// Actions could be defined as methods or functions that perform the necessary operations

// In game loop
bossFightBehavior.tick();

// Serialize to JSON
const jsonRepresentation = bossFightBehavior.serializeToJson();
console.log(jsonRepresentation);

// Export to English
const englishRepresentation = bossFightBehavior.exportToEnglish();
console.log(englishRepresentation);