feat: add condition evaluator with full operator support

2026-05-13 03:26:41 +00:00
commit 8ff8e8f522
2 changed files with 267 additions and 0 deletions
@@ -0,0 +1,111 @@
+/**
+ * Condition evaluator for the Rebirth Incremental game.
+ * Evaluates condition objects against the current game state.
+ */
+
+/**
+ * Operator functions for comparing values.
+ * All operators perform loose equality/inequality checks where applicable.
+ */
+export const OPS = {
+  '==': (a, b) => a == b,
+  '===': (a, b) => a === b,
+  '!=': (a, b) => a != b,
+  '!==': (a, b) => a !== b,
+  '>': (a, b) => a > b,
+  '>=': (a, b) => a >= b,
+  '<': (a, b) => a < b,
+  '<=': (a, b) => a <= b,
+};
+
+/**
+ * Evaluates a condition object against the game state.
+ * @param {Object} condition - The condition to evaluate
+ * @param {Object} state - The current game state
+ * @returns {boolean} - Whether the condition is satisfied
+ */
+export function evaluateCondition(condition, state) {
+  if (!condition || typeof condition !== 'object') {
+    return false;
+  }
+
+  const { type } = condition;
+
+  switch (type) {
+    case 'age': {
+      const opFn = OPS[condition.op];
+      if (!opFn) return false;
+      return opFn(state.age ?? 0, condition.value);
+    }
+
+    case 'stat': {
+      const opFn = OPS[condition.op];
+      if (!opFn) return false;
+      const statValue = state.stats?.[condition.stat] ?? 0;
+      return opFn(statValue, condition.value);
+    }
+
+    case 'careerLevel': {
+      const opFn = OPS[condition.op];
+      if (!opFn) return false;
+      const level = state.careers?.[condition.careerId]?.level ?? 0;
+      return opFn(level, condition.value);
+    }
+
+    case 'money': {
+      const opFn = OPS[condition.op];
+      if (!opFn) return false;
+      return opFn(state.money ?? 0, condition.value);
+    }
+
+    case 'identity': {
+      return state.identity === condition.value;
+    }
+
+    case 'worldFlag': {
+      const flagValue = state.worldFlags?.[condition.flag];
+      if (condition.value !== undefined) {
+        return flagValue === condition.value;
+      }
+      return !!flagValue;
+    }
+
+    case 'hasItem': {
+      const itemCount = state.shopItems?.[condition.itemId] ?? 0;
+      return itemCount > 0;
+    }
+
+    case 'hasArtifact': {
+      const artifactValue = state.artifacts?.[condition.artifactId] ?? 0;
+      if (condition.op) {
+        const opFn = OPS[condition.op];
+        if (!opFn) return false;
+        return opFn(artifactValue, condition.value);
+      }
+      return artifactValue > 0;
+    }
+
+    case 'reincarnation': {
+      const opFn = OPS[condition.op];
+      if (!opFn) return false;
+      return opFn(state.reincarnation ?? 0, condition.value);
+    }
+
+    case 'and': {
+      if (!Array.isArray(condition.conditions)) return false;
+      return condition.conditions.every(sub => evaluateCondition(sub, state));
+    }
+
+    case 'or': {
+      if (!Array.isArray(condition.conditions)) return false;
+      return condition.conditions.some(sub => evaluateCondition(sub, state));
+    }
+
+    case 'not': {
+      return !evaluateCondition(condition.condition, state);
+    }
+
+    default:
+      return false;
+  }
+}
@@ -0,0 +1,156 @@
+import { evaluateCondition, OPS } from '../src/engine/conditionEvaluator.js';
+
+function assert(cond, msg) {
+  if (!cond) throw new Error(msg);
+}
+
+// Test state matching the reference
+const state = {
+  age: 15,
+  reincarnation: 2,
+  money: 300,
+  stats: { body: 30, wisdom: 20, charm: 10, destiny: 5, business: 8, intelligence: 15 },
+  careers: { student: { level: 120 } },
+  identity: 'orphan',
+  worldFlags: { met_taoist: true },
+  shopItems: { taoist_license: 1 },
+  artifacts: { immortal_sword: 3 }
+};
+
+// Test OPS constant exists
+assert(typeof OPS === 'object', 'OPS should be an object');
+assert(typeof OPS['>='] === 'function', 'OPS[">="] should be a function');
+
+// === age conditions ===
+assert(evaluateCondition({ type: 'age', op: '>=', value: 14 }, state) === true, 'age >= 14 should be true');
+assert(evaluateCondition({ type: 'age', op: '>=', value: 16 }, state) === false, 'age >= 16 should be false');
+assert(evaluateCondition({ type: 'age', op: '==', value: 15 }, state) === true, 'age == 15 should be true');
+assert(evaluateCondition({ type: 'age', op: '>', value: 10 }, state) === true, 'age > 10 should be true');
+assert(evaluateCondition({ type: 'age', op: '<', value: 20 }, state) === true, 'age < 20 should be true');
+assert(evaluateCondition({ type: 'age', op: '<=', value: 15 }, state) === true, 'age <= 15 should be true');
+assert(evaluateCondition({ type: 'age', op: '!=', value: 10 }, state) === true, 'age != 10 should be true');
+
+// === stat conditions ===
+assert(evaluateCondition({ type: 'stat', stat: 'body', op: '>=', value: 20 }, state) === true, 'stat body >= 20 should be true');
+assert(evaluateCondition({ type: 'stat', stat: 'body', op: '>=', value: 40 }, state) === false, 'stat body >= 40 should be false');
+assert(evaluateCondition({ type: 'stat', stat: 'wisdom', op: '==', value: 20 }, state) === true, 'stat wisdom == 20 should be true');
+assert(evaluateCondition({ type: 'stat', stat: 'charm', op: '<', value: 20 }, state) === true, 'stat charm < 20 should be true');
+assert(evaluateCondition({ type: 'stat', stat: 'destiny', op: '>', value: 0 }, state) === true, 'stat destiny > 0 should be true');
+
+// Missing stat defaults to 0
+assert(evaluateCondition({ type: 'stat', stat: 'nonexistent', op: '==', value: 0 }, state) === true, 'missing stat == 0 should be true');
+
+// === careerLevel conditions ===
+assert(evaluateCondition({ type: 'careerLevel', careerId: 'student', op: '>=', value: 100 }, state) === true, 'careerLevel student >= 100 should be true');
+assert(evaluateCondition({ type: 'careerLevel', careerId: 'student', op: '>=', value: 200 }, state) === false, 'careerLevel student >= 200 should be false');
+assert(evaluateCondition({ type: 'careerLevel', careerId: 'student', op: '==', value: 120 }, state) === true, 'careerLevel student == 120 should be true');
+
+// Missing career defaults to 0
+assert(evaluateCondition({ type: 'careerLevel', careerId: 'missing', op: '==', value: 0 }, state) === true, 'missing career level == 0 should be true');
+
+// === money conditions ===
+assert(evaluateCondition({ type: 'money', op: '>=', value: 200 }, state) === true, 'money >= 200 should be true');
+assert(evaluateCondition({ type: 'money', op: '>=', value: 500 }, state) === false, 'money >= 500 should be false');
+assert(evaluateCondition({ type: 'money', op: '==', value: 300 }, state) === true, 'money == 300 should be true');
+assert(evaluateCondition({ type: 'money', op: '<', value: 500 }, state) === true, 'money < 500 should be true');
+
+// === identity conditions ===
+assert(evaluateCondition({ type: 'identity', value: 'orphan' }, state) === true, 'identity orphan should be true');
+assert(evaluateCondition({ type: 'identity', value: 'noble' }, state) === false, 'identity noble should be false');
+
+// === worldFlag conditions ===
+assert(evaluateCondition({ type: 'worldFlag', flag: 'met_taoist', value: true }, state) === true, 'worldFlag met_taoist == true should be true');
+assert(evaluateCondition({ type: 'worldFlag', flag: 'met_taoist' }, state) === true, 'worldFlag met_taoist (no value) should be true');
+assert(evaluateCondition({ type: 'worldFlag', flag: 'met_king', value: true }, state) === false, 'worldFlag met_king == true should be false');
+assert(evaluateCondition({ type: 'worldFlag', flag: 'met_king' }, state) === false, 'worldFlag met_king (no value) should be false');
+
+// === hasItem conditions ===
+assert(evaluateCondition({ type: 'hasItem', itemId: 'taoist_license' }, state) === true, 'hasItem taoist_license should be true');
+assert(evaluateCondition({ type: 'hasItem', itemId: 'missing_item' }, state) === false, 'hasItem missing_item should be false');
+
+// === hasArtifact conditions ===
+assert(evaluateCondition({ type: 'hasArtifact', artifactId: 'immortal_sword' }, state) === true, 'hasArtifact immortal_sword should be true');
+assert(evaluateCondition({ type: 'hasArtifact', artifactId: 'immortal_sword', op: '>=', value: 3 }, state) === true, 'hasArtifact immortal_sword >= 3 should be true');
+assert(evaluateCondition({ type: 'hasArtifact', artifactId: 'immortal_sword', op: '>', value: 5 }, state) === false, 'hasArtifact immortal_sword > 5 should be false');
+assert(evaluateCondition({ type: 'hasArtifact', artifactId: 'missing_artifact' }, state) === false, 'hasArtifact missing_artifact should be false');
+assert(evaluateCondition({ type: 'hasArtifact', artifactId: 'missing_artifact', op: '==', value: 0 }, state) === true, 'hasArtifact missing_artifact == 0 should be true');
+
+// === reincarnation conditions ===
+assert(evaluateCondition({ type: 'reincarnation', op: '>=', value: 1 }, state) === true, 'reincarnation >= 1 should be true');
+assert(evaluateCondition({ type: 'reincarnation', op: '>=', value: 5 }, state) === false, 'reincarnation >= 5 should be false');
+assert(evaluateCondition({ type: 'reincarnation', op: '==', value: 2 }, state) === true, 'reincarnation == 2 should be true');
+
+// === and conditions ===
+assert(evaluateCondition({
+  type: 'and',
+  conditions: [
+    { type: 'age', op: '>=', value: 14 },
+    { type: 'stat', stat: 'body', op: '>=', value: 20 }
+  ]
+}, state) === true, 'and with two true conditions should be true');
+
+assert(evaluateCondition({
+  type: 'and',
+  conditions: [
+    { type: 'age', op: '>=', value: 14 },
+    { type: 'stat', stat: 'body', op: '>=', value: 50 }
+  ]
+}, state) === false, 'and with one false condition should be false');
+
+assert(evaluateCondition({
+  type: 'and',
+  conditions: []
+}, state) === true, 'and with empty conditions should be true (vacuous truth)');
+
+// === or conditions ===
+assert(evaluateCondition({
+  type: 'or',
+  conditions: [
+    { type: 'age', op: '>=', value: 20 },
+    { type: 'stat', stat: 'body', op: '>=', value: 20 }
+  ]
+}, state) === true, 'or with one true condition should be true');
+
+assert(evaluateCondition({
+  type: 'or',
+  conditions: [
+    { type: 'age', op: '>=', value: 20 },
+    { type: 'stat', stat: 'body', op: '>=', value: 50 }
+  ]
+}, state) === false, 'or with all false conditions should be false');
+
+assert(evaluateCondition({
+  type: 'or',
+  conditions: []
+}, state) === false, 'or with empty conditions should be false');
+
+// === not conditions ===
+assert(evaluateCondition({
+  type: 'not',
+  condition: { type: 'age', op: '>=', value: 20 }
+}, state) === true, 'not of false condition should be true');
+
+assert(evaluateCondition({
+  type: 'not',
+  condition: { type: 'age', op: '>=', value: 14 }
+}, state) === false, 'not of true condition should be false');
+
+// === nested compound conditions ===
+assert(evaluateCondition({
+  type: 'and',
+  conditions: [
+    { type: 'or', conditions: [
+      { type: 'age', op: '>=', value: 20 },
+      { type: 'identity', value: 'orphan' }
+    ]},
+    { type: 'not', condition: { type: 'stat', stat: 'body', op: '<', value: 10 }}
+  ]
+}, state) === true, 'nested compound condition should be true');
+
+// === invalid/edge cases ===
+assert(evaluateCondition(null, state) === false, 'null condition should be false');
+assert(evaluateCondition({}, state) === false, 'empty object should be false');
+assert(evaluateCondition({ type: 'unknown' }, state) === false, 'unknown type should be false');
+assert(evaluateCondition({ type: 'age', op: 'invalid', value: 10 }, state) === false, 'invalid operator should be false');
+
+console.log('All conditionEvaluator tests PASS');