Game image differs after saving and loading state

[DavidSteinhart]

I tried saving and loading a state, but the resulting images differ. Mario shows a different animation frame. Might be related to #99

from pyboy.utils import WindowEvent
import pyboy as pyboy
import numpy as np
import io

# Load Super Mario Land and progress to start of game
boy = pyboy.PyBoy('SuperMarioLand1.gb')
boy.set_emulation_speed(0)
for i in range(100):
      boy.tick()
boy.send_input(WindowEvent.PRESS_BUTTON_START)
boy.tick()
boy.send_input(WindowEvent.RELEASE_BUTTON_START)
for i in range(20):
      boy.tick()

boy.send_input(WindowEvent.PRESS_ARROW_RIGHT)
for i in range(50):
      boy.tick()

screen_before = boy.botsupport_manager().screen().screen_image()
array_before = boy.botsupport_manager().screen().screen_ndarray()

file_like_object = io.BytesIO()
boy.save_state(file_like_object)
file_like_object.seek(0)
boy.load_state(file_like_object)

screen_after = boy.botsupport_manager().screen().screen_image()
array_after = boy.botsupport_manager().screen().screen_ndarray()

screen_before.show()
screen_after.show()
print(np.array_equal(array_before, array_after))  # False

[DavidSteinhart]

The two states seem to synchronize again after calling boy.tick() once.

[Baekalfen]

It's likely just the screen which needs to be flushed. Definitely a bug, just a hint, if someone wants to help me fix it

[201512130144]

the more more ，the less less

[krs013]

This appears to have been fixed in 1.4. The test code returns True and the images shown match.