Prefer the "godot" on PATH by default, and fall back to the steam version if that's unavailable.

goat/godot.py

@@ -1,9 +1,13 @@
 import os
 import subprocess
+import shutil
 
 from . import util
 
-GODOT_PATHS = ["C:\Program Files (x86)\Steam\steamapps\common\Godot Engine\godot.windows.opt.tools.64.exe"]
+GODOT_PATHS = [
+    shutil.which("godot"),
+    "C:\Program Files (x86)\Steam\steamapps\common\Godot Engine\godot.windows.opt.tools.64.exe"
+]
 GODOT_PROJECT = "project.godot"
 
 class Project():
@@ -18,7 +22,7 @@ class Project():
 
 def find_command():
     for exe in GODOT_PATHS:
-        if os.path.exists(exe):
+        if exe and os.path.exists(exe):
             return exe
 
     return "godot"