diff --git a/README.md b/README.md
index bdb5689..0d25c9c 100644
--- a/README.md
+++ b/README.md
@@ -16,6 +16,7 @@ A tool aimed at enhancing the experience when playing the game on linux through
1. Copy the file `er-patcher` to the game directory.
2. In steam, set the game launch options to `python er-patcher ARGS -- %command%` See [Features](#features) for available options.
- Example: `python er-patcher --all --rate 30 --disable-rune-loss -- %command%`
+ - Example using the [seamless co-op](https://www.nexusmods.com/eldenring/mods/510) mod: `python er-patcher --all --executable launch_elden_ring_seamlesscoop.exe -- %command%`
- Example using [MangoHud](https://github.com/flightlessmango/MangoHud) and wine fullscreen FSR: `python er-patcher --rate 144 -uvca -- env WINE_FULLSCREEN_FSR=1 MANGOHUD=1 MANGOHUD_CONFIG=histogram %command%`
3. Launch the game through steam. `er-patcher` automatically launches a patched version of `eldenring.exe` with EAC disabled.
@@ -26,11 +27,12 @@ Note: There might be some distros (e.g. older Ubuntu releases) that launch pytho
| Argument | Description |
| --------------------------------------- | --------------------------------------------------------------------------------------------------------- |
| `-r RATE` or `--rate RATE` | Set a custom framerate limit (default: 60). |
-| `--with-eac` | Run game with EAC (Use it at your own risk) |
+| `-x EXE` or `--executable EXE` | The executable to launch, relative to the games folder.
Mutually exclusive with `--with-eac`. |
+| `--with-eac` | Run game with EAC (Use it at your own risk).
Mutually exclusive with `--executable`. |
| `--disable-rune-loss` | Disable losing runes upon death. |
-| `--all` | Enable all options except `--rate` and
gameplay changes like `--disable-rune-loss`. |
+| `--all` | Enable all options except `--rate`, `--executable`, and
gameplay changes like `--disable-rune-loss`. |
| `-u` or `--ultrawide` | Remove black bars. |
-| `-v` or `--disable-vigniette` | Remove the vigniette overlay . |
+| `-v` or `--disable-vigniette` | Remove the vigniette overlay. |
| `-c` or `--disable-ca` | Disable chromatic abberation. |
| `-a` or `--increase-animation-distance` | Fix low frame rate animations at screen
edges or for distant entities. |
| `-s` or `--skip-intro` | Skip intro logos at game start. |
diff --git a/er-patcher b/er-patcher
index 053b3cd..ed73579 100755
--- a/er-patcher
+++ b/er-patcher
@@ -1,6 +1,5 @@
#!/usr/bin/env python3
-import os
import sys
import subprocess
import argparse
@@ -13,10 +12,11 @@ from shutil import rmtree
if __name__ == "__main__":
patcher_args = sys.argv[1:sys.argv.index("--")]
-
+
parser = argparse.ArgumentParser(description="Patch Elden Ring executable and launch it without EAC.")
-
+
parser.add_argument("-r", "--rate", type=int, default=60, help="Modify the frame rate limit (e.g. 30, 120, 165 or whatever).")
+ parser.add_argument("-x", "--executable", action='store', type=str, default="eldenring.exe", help="The executable to launch, relative to the games folder.")
parser.add_argument("--with-eac", action='store_true', help="Run game with EAC (Use at own your risk)")
parser.add_argument("--disable-rune-loss", action='store_true', help="Disable losing runes upon death.")
parser.add_argument("--all", action='store_true', help="Enable all options except rate adjustment and gamplay changes like `--disable-rune-loss`.")
@@ -28,6 +28,10 @@ if __name__ == "__main__":
parser.add_argument("-f", "--remove-60hz-fullscreen", action='store_true', help="Remove 60hz lock in fullscreen.")
patch = parser.parse_args(patcher_args)
+ if patch.with_eac and patch.executable != "eldenring.exe":
+ print("er-patcher: --with-eac is mutually exclusive with --executable")
+ sys.exit(1)
+
game_dir = Path(".")
with open(game_dir / "eldenring.exe", "rb") as f:
exe_hex = f.read().hex()
@@ -45,7 +49,7 @@ if __name__ == "__main__":
rl_pattern = "b0 01 .. 8b .. e8 .. .. .. .. .. 8b .. .. .. 32 c0 .. 83 .. 28 c3".replace(" ", "")
if (res := re.search(rl_pattern, exe_hex)) is not None:
rl_addr = res.span()[0] + 6
- rl_patch = "90 90 90 90 90".replace(" ", "") # NOP
+ rl_patch = "90 90 90 90 90".replace(" ", "") # NOP
exe_hex = exe_hex[:rl_addr] + rl_patch + exe_hex[rl_addr + len(rl_patch):]
else:
print("er-patcher: disable rune loss pattern scan failed")
@@ -96,7 +100,7 @@ if __name__ == "__main__":
exe_hex = exe_hex[:si_addr] + si_patch + exe_hex[si_addr + len(si_patch):]
else:
print("er-patcher: skip_intro pattern scan failed")
-
+
if patch.remove_60hz_fullscreen or patch.all:
fs_pattern = "c7 45 ef 3c 00 00 00".replace(" ", "")
if (res := re.search(fs_pattern, exe_hex)) is not None:
@@ -121,20 +125,20 @@ if __name__ == "__main__":
if d == game_dir_patched:
continue
if not (game_dir_patched / d).is_dir():
- (game_dir_patched / d).mkdir(parents=True)
+ (game_dir_patched / d).mkdir(parents=True)
# hard link game files to game_dir_patched; symbolic links would be easier
# to handle but by default windows 10 doesn't allow them
game_files = [f for f in game_dir.rglob("*") if f.is_file()]
for f in game_files:
if f.name in ["eldenring.exe", "er-patcher"]:
- continue
+ continue
if not (game_dir_patched / f).is_file():
- f.link_to(game_dir_patched / f)
+ f.link_to(game_dir_patched / f)
# start patched exe directly to avoid EAC
steam_cmd = sys.argv[1 + sys.argv.index("--"):]
- steam_cmd[-1] = Path(steam_cmd[-1]).parent.absolute() / game_dir_patched / ("start_protected_game.exe" if patch.with_eac else "eldenring.exe")
+ steam_cmd[-1] = Path(steam_cmd[-1]).parent.absolute() / game_dir_patched / ("start_protected_game.exe" if patch.with_eac else patch.executable)
subprocess.run(steam_cmd, cwd=steam_cmd[-1].parent.absolute())
# cleanup