@yantra-core/sutra/test/sutra-use-subsutra-test.js

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

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


tap.test('Sutra .use() method and subSutra functionality - single not condition - true', async (t) => {

  let round = new Sutra();

  // Define round-related conditions
  round.addCondition('roundStarted', (entity, gameState) => gameState.roundStarted === true);
  round.addCondition('roundEnded', (entity, gameState) => gameState.roundEnded === true);
  round.addCondition('roundRunning', {
    op: 'not',
    conditions: ['roundEnded']
  });
  
  let npcLogic = new Sutra();
  npcLogic.addCondition('isSpawner', (entity) => entity.type === 'UnitSpawner');
  npcLogic.addAction({
    if: ['isSpawner'],
    then: [{
      action: 'spawnEnemy',
      data: {
        // Data relevant to spawning the enemy
        type: 'ENEMY',
        position: { x: 100, y: 50 },
        health: 100
      }
    }]
  });
  
  npcLogic.on('spawnEnemy', (data, node, gameState) => {
    console.log('Spawning enemy:', data);
    // Logic to spawn an enemy in the game
    // For example, you might add the enemy to the gameState or call a method in your game engine
  });
  
  let level = new Sutra();
  
  level.use(round);
  level.use(npcLogic, 'npcLogic'); // optionally specify a name for the subtree to reference it later
  //level.use(npcLogic, 'npcLogic');
  
  level.addAction({
    if: 'roundRunning',
    subtree: 'npcLogic'
  });
  
  let actionTriggered = false;
  npcLogic.on('spawnEnemy', () => {
    actionTriggered = true;
  });

  level.tick({
    type: 'UnitSpawner'
    // ... other data ...
  }, { roundStarted: false, roundEnded: false });

  t.equal(actionTriggered, true, 'spawnEnemy action should be triggered when round is not running');
  t.end();

});


tap.test('Sutra .use() method and subSutra functionality - single not condition - false', async (t) => {

  let round = new Sutra();

  // Define round-related conditions
  round.addCondition('roundStarted', (entity, gameState) => gameState.roundStarted === true);
  round.addCondition('roundEnded', (entity, gameState) => gameState.roundEnded === true);
  round.addCondition('roundRunning', {
    op: 'not',
    conditions: ['roundEnded']
  });
  
  let npcLogic = new Sutra();
  npcLogic.addCondition('isSpawner', (entity) => entity.type === 'UnitSpawner');
  npcLogic.addAction({
    if: ['isSpawner'],
    then: [{
      action: 'spawnEnemy',
      data: {
        // Data relevant to spawning the enemy
        type: 'ENEMY',
        position: { x: 100, y: 50 },
        health: 100
      }
    }]
  });
  
  npcLogic.on('spawnEnemy', (data, node, gameState) => {
    console.log('Spawning enemy:', data);
    // Logic to spawn an enemy in the game
    // For example, you might add the enemy to the gameState or call a method in your game engine
  });
  
  let level = new Sutra();
  
  level.use(round, 'roundLogic');
  level.use(npcLogic, 'npcLogic');
  //level.use(npcLogic, 'npcLogic');
  
  level.addAction({
    if: 'roundRunning',
    subtree: 'npcLogic'
  });
  
  let actionTriggered = false;
  npcLogic.on('spawnEnemy', () => {
    actionTriggered = true;
  });

  level.tick({
    type: 'UnitSpawner'
    // ... other data ...
  }, { roundStarted: false, roundEnded: true });

  t.equal(actionTriggered, false, 'spawnEnemy action should be triggered when round is not running');
  t.end();

});