fixed # 重构梦三项目结构

mengsan/progression/reward.js

@@ -0,0 +1,20 @@
+import config from "../config.js";
+import { nextRandom } from "./state.js";
+import { canAcquireCard } from "../cards/card-definitions.js";
+
+export const rewardCardName = reward => reward?.card?.name || ({ card_sha: "sha", card_tao: "tao" })[reward?.effectId] || null;
+export const canAcquireReward = (run, reward) => {
+    const name = rewardCardName(reward);
+    return !name || canAcquireCard(run?.player?.character, name);
+};
+
+export const getRandomRewardChoices = (run, poolId, count = 3) => {
+    const fallbackId = "shared.pool.battle.normal";
+    const pool = (config.rewardPools[poolId] || config.rewardPools[fallbackId])
+        .filter(id => canAcquireReward(run, config.rewards[id])).slice();
+    for (let index = pool.length - 1; index > 0; index--) {
+        const target = Math.floor(nextRandom(run) * (index + 1));
+        [pool[index], pool[target]] = [pool[target], pool[index]];
+    }
+    return pool.slice(0, count).map(id => ({ id, ...config.rewards[id] }));
+};