Run a gameplay test script against the game and return its result.
The game main loop keeps rendering (paused) while the test steps the
game logic deterministically at full speed, yielding to the browser
regularly so the run stays visible and interruptible (see
_maybeYield).
Run a gameplay test script against the game and return its result.
The game main loop keeps rendering (paused) while the test steps the game logic deterministically at full speed, yielding to the browser regularly so the run stays visible and interruptible (see
_maybeYield).