timer

src/room/timer-state.ts

+export class TimerState {
+  leftMs: [number, number] = [0, 0];
+  compensatorMs: [number, number] = [0, 0];
+  backedMs: [number, number] = [0, 0];
+  runningPos?: number;
+  startedAtMs = 0;
+  awaitingConfirm = false;
+  private timer?: ReturnType<typeof setTimeout>;
+
+  reset(initialMs: number) {
+    this.leftMs = [initialMs, initialMs];
+    this.compensatorMs = [initialMs, initialMs];
+    this.backedMs = [initialMs, initialMs];
+    this.clear();
+  }
+
+  clear(settleElapsed = false) {
+    if (this.timer) {
+      clearTimeout(this.timer);
+      this.timer = undefined;
+    }
+    if (settleElapsed && this.runningPos != null) {
+      const elapsedMs = this.elapsedMs();
+      if (elapsedMs > 0) {
+        this.leftMs[this.runningPos] = Math.max(
+          0,
+          this.leftMs[this.runningPos] - elapsedMs,
+        );
+      }
+    }
+    this.runningPos = undefined;
+    this.startedAtMs = 0;
+    this.awaitingConfirm = false;
+  }
+
+  elapsedMs() {
+    if (!this.startedAtMs) {
+      return 0;
+    }
+    return Math.max(0, Date.now() - this.startedAtMs);
+  }
+
+  schedule(
+    player: number,
+    delayMs: number,
+    awaitingConfirm: boolean,
+    onTimeout: () => void,
+  ) {
+    this.runningPos = player;
+    this.startedAtMs = Date.now();
+    this.awaitingConfirm = awaitingConfirm;
+    this.timer = setTimeout(onTimeout, delayMs);
+  }
+}

src/utility/can-increase-time.ts

+import { OcgcoreCommonConstants } from 'ygopro-msg-encode';
+
+export const canIncreaseTime = (gameMsg: number, response?: Buffer) => {
+  switch (gameMsg) {
+    case OcgcoreCommonConstants.MSG_RETRY:
+    case OcgcoreCommonConstants.MSG_SELECT_UNSELECT_CARD:
+      return false;
+    case OcgcoreCommonConstants.MSG_SELECT_CHAIN:
+      return response != null && response.length >= 4 && response.readInt32LE(0) !== -1;
+    case OcgcoreCommonConstants.MSG_SELECT_IDLECMD: {
+      if (response == null || response.length < 4) {
+        return false;
+      }
+      const idleChoice = response.readInt32LE(0) & 0xffff;
+      return idleChoice <= 5;
+    }
+    case OcgcoreCommonConstants.MSG_SELECT_BATTLECMD: {
+      if (response == null || response.length < 4) {
+        return false;
+      }
+      const battleChoice = response.readInt32LE(0) & 0xffff;
+      return battleChoice <= 1;
+    }
+    default:
+      return true;
+  }
+};

src/utility/get-message-identifier.ts

+import { YGOProMsgBase } from 'ygopro-msg-encode';
+
+export const getMessageIdentifier = (message: YGOProMsgBase) =>
+  ((message.constructor as any).identifier as number) ?? 0;