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Merge pull request #39045 from akien-mga/projectsettings-setup-docs

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Improve documentation of ProjectSettings::setup
This commit is contained in:
Rémi Verschelde 2020-05-25 18:09:05 +02:00 committed by GitHub
commit 2709ddb163
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1 changed files with 39 additions and 30 deletions
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69
core/project_settings.cpp
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@ -295,10 +295,16 @@ void ProjectSettings::_convert_to_last_version(int p_from_version) {
* using the following merit order:
* - If using NetworkClient, try to lookup project file or fail.
* - If --main-pack was passed by the user (`p_main_pack`), load it or fail.
* - Search for .pck file matching binary name. There are two possibilities:
* o exec_path.get_basename() + '.pck' (e.g. 'win_game.exe' -> 'win_game.pck')
* o exec_path + '.pck' (e.g. 'linux_game' -> 'linux_game.pck')
* For each tentative, if the file exists, load it or fail.
* - Search for project PCKs automatically. For each step we try loading a potential
* PCK, and if it doesn't work, we proceed to the next step. If any step succeeds,
* we try loading the project settings, and abort if it fails. Steps:
* o Bundled PCK in the executable.
* o [macOS only] PCK with same basename as the binary in the .app resource dir.
* o PCK with same basename as the binary in the binary's directory. We handle both
* changing the extension to '.pck' (e.g. 'win_game.exe' -> 'win_game.pck') and
* appending '.pck' to the binary name (e.g. 'linux_game' -> 'linux_game.pck').
* o PCK with the same basename as the binary in the current working directory.
* Same as above for the two possible PCK file names.
* - On relevant platforms (Android/iOS), lookup project file in OS resource path.
* If found, load it or fail.
* - Lookup project file in passed `p_path` (--path passed by the user), i.e. we
@ -339,65 +345,68 @@ Error ProjectSettings::_setup(const String &p_path, const String &p_main_pack, b
String exec_path = OS::get_singleton()->get_executable_path();
if (exec_path != "") {
// Attempt with exec_name.pck
// We do several tests sequentially until one succeeds to find a PCK,
// and if so we attempt loading it at the end.
// Attempt with PCK bundled into executable.
bool found = _load_resource_pack(exec_path);
// Attempt with exec_name.pck.
// (This is the usual case when distributing a Godot game.)
String exec_dir = exec_path.get_base_dir();
String exec_filename = exec_path.get_file();
String exec_basename = exec_filename.get_basename();
// Based on the OS, it can be the exec path + '.pck' (Linux w/o extension, macOS in .app bundle)
// or the exec path's basename + '.pck' (Windows).
// We need to test both possibilities as extensions for Linux binaries are optional
// (so both 'mygame.bin' and 'mygame' should be able to find 'mygame.pck').
String exec_dir = exec_path.get_base_dir();
String exec_filename = exec_path.get_file();
String exec_basename = exec_filename.get_basename();
// Attempt with PCK bundled into executable
bool found = _load_resource_pack(exec_path);
#ifdef OSX_ENABLED
if (!found) {
// Attempt to load PCK from macOS .app bundle resources
// Attempt to load PCK from macOS .app bundle resources.
found = _load_resource_pack(OS::get_singleton()->get_bundle_resource_dir().plus_file(exec_basename + ".pck"));
}
#endif
if (!found) {
// Try to load data pack at the location of the executable
// As mentioned above, we have two potential names to attempt
// Try to load data pack at the location of the executable.
// As mentioned above, we have two potential names to attempt.
found = _load_resource_pack(exec_dir.plus_file(exec_basename + ".pck")) || _load_resource_pack(exec_dir.plus_file(exec_filename + ".pck"));
if (!found) {
// If we couldn't find them next to the executable, we attempt
// the current working directory. Same story, two tests.
found = _load_resource_pack(exec_basename + ".pck") || _load_resource_pack(exec_filename + ".pck");
}
}
// If we opened our package, try and load our project
if (!found) {
// If we couldn't find them next to the executable, we attempt
// the current working directory. Same story, two tests.
found = _load_resource_pack(exec_basename + ".pck") || _load_resource_pack(exec_filename + ".pck");
}
// If we opened our package, try and load our project.
if (found) {
Error err = _load_settings_text_or_binary("res://project.godot", "res://project.binary");
if (err == OK) {
// Load override from location of executable
// Optional, we don't mind if it fails
// Load override from location of the executable.
// Optional, we don't mind if it fails.
_load_settings_text(exec_path.get_base_dir().plus_file("override.cfg"));
}
return err;
}
}
// Try to use the filesystem for files, according to OS. (only Android -when reading from pck- and iOS use this)
// Try to use the filesystem for files, according to OS.
// (Only Android -when reading from pck- and iOS use this.)
if (OS::get_singleton()->get_resource_dir() != "") {
// OS will call ProjectSettings->get_resource_path which will be empty if not overridden!
// If the OS would rather use a specific location, then it will not be empty.
resource_path = OS::get_singleton()->get_resource_dir().replace("\\", "/");
if (resource_path != "" && resource_path[resource_path.length() - 1] == '/') {
resource_path = resource_path.substr(0, resource_path.length() - 1); // chop end
resource_path = resource_path.substr(0, resource_path.length() - 1); // Chop end.
}
Error err = _load_settings_text_or_binary("res://project.godot", "res://project.binary");
if (err == OK) {
// Optional, we don't mind if it fails
// Optional, we don't mind if it fails.
_load_settings_text("res://override.cfg");
}
return err;
@ -418,7 +427,7 @@ Error ProjectSettings::_setup(const String &p_path, const String &p_main_pack, b
while (true) {
err = _load_settings_text_or_binary(current_dir.plus_file("project.godot"), current_dir.plus_file("project.binary"));
if (err == OK) {
// Optional, we don't mind if it fails
// Optional, we don't mind if it fails.
_load_settings_text(current_dir.plus_file("override.cfg"));
candidate = current_dir;
found = true;
@ -438,7 +447,7 @@ Error ProjectSettings::_setup(const String &p_path, const String &p_main_pack, b
}
resource_path = candidate;
resource_path = resource_path.replace("\\", "/"); // windows path to unix path just in case
resource_path = resource_path.replace("\\", "/"); // Windows path to Unix path just in case.
memdelete(d);
if (!found) {
@ -446,7 +455,7 @@ Error ProjectSettings::_setup(const String &p_path, const String &p_main_pack, b
}
if (resource_path.length() && resource_path[resource_path.length() - 1] == '/') {
resource_path = resource_path.substr(0, resource_path.length() - 1); // chop end
resource_path = resource_path.substr(0, resource_path.length() - 1); // Chop end.
}
return OK;