Method prepare

packages/core/src/app/Player.ts:344–394

()

  }

  private async prepare(): Promise<
    PlayerState & {seek: number; render: boolean}
  > {
    const state = {
      ...this.playerState.current,
      seek: this.requestedSeek,
      render: this.requestedRender,
    };
    this.requestedSeek = -1;
    this.requestedRender = false;

    // Recalculate the project if necessary
    if (this.requestedRecalculation) {
      if (state.seek < 0) {
        state.seek = this.playback.frame;
      }
      try {
        await this.playback.recalculate();
        this.duration.current = this.playback.frame;
        this.recalculated.dispatch();
      } catch (e) {
        this.requestSeek(state.seek);
        throw e;
      } finally {
        this.requestedRecalculation = false;
      }
    }

    // Pause if reached the end or the range is 0
    // Seek to the beginning for non-empty scenes
    if (
      (!state.loop && this.finished && !state.paused && state.seek < 0) ||
      this.endFrame === this.startFrame
    ) {
      this.togglePlayback(false);
      state.paused = true;
      state.seek =
        this.endFrame === this.startFrame ? state.seek : this.startFrame;
    }

    // Seek to the beginning if looping is enabled
    if (
      state.loop &&
      (state.seek > this.endFrame || (this.finished && !state.paused)) &&
      this.startFrame !== this.endTime
    ) {
      state.seek = this.startFrame;
    }

    return state;
  }

  private async run() {
    const state = await this.prepare();