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Implement the %command% placeholder in the Main Run Args setting

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This can be used to tell Godot to run an executable that will run Godot
rather than running Godot directly. This is useful to make Godot start
on the dedicated GPU when using a NVIDIA Optimus setup on Linux:
`prime-run %command%`

The `editor/run/main_run_args` setting declaration was moved to make it
visible in the ProjectSettings documentation.
This commit is contained in:
Hugo Locurcio
2020-02-07 19:51:50 +01:00
parent a33a8f1e29
commit ce4aa07276
5 changed files with 51 additions and 8 deletions
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45
editor/editor_run.cpp
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@@ -183,15 +183,50 @@ Error EditorRun::run(const String &p_scene, const String &p_custom_args, const L
args.push_back(p_scene);
}
String exec = OS::get_singleton()->get_executable_path();
if (p_custom_args != "") {
Vector<String> cargs = p_custom_args.split(" ", false);
for (int i = 0; i < cargs.size(); i++) {
args.push_back(cargs[i].replace(" ", "%20"));
// Allow the user to specify a command to run, similar to Steam's launch options.
// In this case, Godot will no longer be run directly; it's up to the underlying command
// to run it. For instance, this can be used on Linux to force a running project
// to use Optimus using `prime-run` or similar.
// Example: `prime-run %command% --time-scale 0.5`
const int placeholder_pos = p_custom_args.find("%command%");
Vector<String> custom_args;
if (placeholder_pos != -1) {
// Prepend executable-specific custom arguments.
// If nothing is placed before `%command%`, behave as if no placeholder was specified.
Vector<String> exec_args = p_custom_args.substr(0, placeholder_pos).split(" ", false);
if (exec_args.size() >= 1) {
exec = exec_args[0];
exec_args.remove(0);
// Append the Godot executable name before we append executable arguments
// (since the order is reversed when using `push_front()`).
args.push_front(OS::get_singleton()->get_executable_path());
}
for (int i = exec_args.size() - 1; i >= 0; i--) {
// Iterate backwards as we're pushing items in the reverse order.
args.push_front(exec_args[i].replace(" ", "%20"));
}
// Append Godot-specific custom arguments.
custom_args = p_custom_args.substr(placeholder_pos + String("%command%").size()).split(" ", false);
for (int i = 0; i < custom_args.size(); i++) {
args.push_back(custom_args[i].replace(" ", "%20"));
}
} else {
// Append Godot-specific custom arguments.
custom_args = p_custom_args.split(" ", false);
for (int i = 0; i < custom_args.size(); i++) {
args.push_back(custom_args[i].replace(" ", "%20"));
}
}
}
String exec = OS::get_singleton()->get_executable_path();
printf("Running: %s", exec.utf8().get_data());
for (List<String>::Element *E = args.front(); E; E = E->next()) {
printf(" %s", E->get().utf8().get_data());