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Revise the screen capture method to continuous grabbing and extract the latest frame to address the issue of "DXCAM failed to capture frame, trying to use the latest screenshot"

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zaixia108
2025-12-23 09:44:29 +08:00
parent 3f467ff158
commit 223d446d9a
1 changed files with 36 additions and 33 deletions
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nitrogen/game_env.py
+10 -7
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@@ -21,6 +21,7 @@ import win32gui
import win32api import win32api
import win32con import win32con
def get_process_info(process_name): def get_process_info(process_name):
""" """
Get process information for a given process name on Windows. Get process information for a given process name on Windows.
@@ -338,6 +339,7 @@ class GamepadEmulator:
self.gamepad.reset() self.gamepad.reset()
self.gamepad.update() self.gamepad.update()
class PyautoguiScreenshotBackend: class PyautoguiScreenshotBackend:
def __init__(self, bbox): def __init__(self, bbox):
@@ -346,15 +348,17 @@ class PyautoguiScreenshotBackend:
def screenshot(self): def screenshot(self):
return pyautogui.screenshot(region=self.bbox) return pyautogui.screenshot(region=self.bbox)
class DxcamScreenshotBackend: class DxcamScreenshotBackend:
def __init__(self, bbox): def __init__(self, bbox, fps):
import dxcam import dxcam
self.camera = dxcam.create() self.camera = dxcam.create()
self.bbox = bbox self.bbox = bbox
self.last_screenshot = None self.last_screenshot = None
self.camera.start(region=self.bbox, target_fps=fps, video_mode=True)
def screenshot(self): def screenshot(self):
screenshot = self.camera.grab(region=self.bbox) screenshot = self.camera.get_latest_frame()
if screenshot is None: if screenshot is None:
print("DXCAM failed to capture frame, trying to use the latest screenshot") print("DXCAM failed to capture frame, trying to use the latest screenshot")
if self.last_screenshot is not None: if self.last_screenshot is not None:
@@ -414,12 +418,12 @@ class GamepadEnv(Env):
self.game_arch = proc_info["architecture"] self.game_arch = proc_info["architecture"]
self.game_window_name = proc_info["window_name"] self.game_window_name = proc_info["window_name"]
print(f"Game process found: {self.game} (PID: {self.game_pid}, Arch: {self.game_arch}, Window: {self.game_window_name})") print(
f"Game process found: {self.game} (PID: {self.game_pid}, Arch: {self.game_arch}, Window: {self.game_window_name})")
if self.game_pid is None: if self.game_pid is None:
raise Exception(f"Could not find PID for game: {game}") raise Exception(f"Could not find PID for game: {game}")
self.observation_space = Box( self.observation_space = Box(
low=0, high=255, shape=(self.image_height, self.image_width, 3), dtype="uint8" low=0, high=255, shape=(self.image_height, self.image_width, 3), dtype="uint8"
) )
@@ -464,20 +468,19 @@ class GamepadEnv(Env):
self.game_window.activate() self.game_window.activate()
l, t, r, b = self.game_window.left, self.game_window.top, self.game_window.right, self.game_window.bottom l, t, r, b = self.game_window.left, self.game_window.top, self.game_window.right, self.game_window.bottom
self.bbox = (l, t, r-l, b-t) self.bbox = (l, t, r - l, b - t)
# Initialize speedhack client if using DLL injection # Initialize speedhack client if using DLL injection
self.speedhack_client = xsh.Client(process_id=self.game_pid, arch=self.game_arch) self.speedhack_client = xsh.Client(process_id=self.game_pid, arch=self.game_arch)
# Get the screenshot backend # Get the screenshot backend
if screenshot_backend == "dxcam": if screenshot_backend == "dxcam":
self.screenshot_backend = DxcamScreenshotBackend(self.bbox) self.screenshot_backend = DxcamScreenshotBackend(self.bbox, self.env_fps)
elif screenshot_backend == "pyautogui": elif screenshot_backend == "pyautogui":
self.screenshot_backend = PyautoguiScreenshotBackend(self.bbox) self.screenshot_backend = PyautoguiScreenshotBackend(self.bbox)
else: else:
raise ValueError("Unsupported screenshot backend. Use 'dxcam' or 'pyautogui'.") raise ValueError("Unsupported screenshot backend. Use 'dxcam' or 'pyautogui'.")
def calculate_step_duration(self): def calculate_step_duration(self):
""" """
Calculate the step duration based on game speed and environment FPS. Calculate the step duration based on game speed and environment FPS.