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Copy pathPyActor.cpp
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218 lines (163 loc) · 4.63 KB
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#include "UnrealEnginePythonPrivatePCH.h"
#include "PyActor.h"
#include "PythonDelegate.h"
APyActor::APyActor()
{
PrimaryActorTick.bCanEverTick = true;
PythonTickForceDisabled = false;
PythonDisableAutoBinding = false;
}
// Called when the game starts
void APyActor::BeginPlay()
{
Super::BeginPlay();
// ...
if (PythonModule.IsEmpty())
return;
FScopePythonGIL gil;
py_uobject = ue_get_python_wrapper(this);
if (!py_uobject) {
unreal_engine_py_log_error();
return;
}
PyObject *py_actor_module = PyImport_ImportModule(TCHAR_TO_UTF8(*PythonModule));
if (!py_actor_module) {
unreal_engine_py_log_error();
return;
}
#if WITH_EDITOR
// todo implement autoreload with a dictionary of module timestamps
py_actor_module = PyImport_ReloadModule(py_actor_module);
if (!py_actor_module) {
unreal_engine_py_log_error();
return;
}
#endif
if (PythonClass.IsEmpty())
return;
PyObject *py_actor_module_dict = PyModule_GetDict(py_actor_module);
PyObject *py_actor_class = PyDict_GetItemString(py_actor_module_dict, TCHAR_TO_UTF8(*PythonClass));
if (!py_actor_class) {
UE_LOG(LogPython, Error, TEXT("Unable to find class %s in module %s"), *PythonClass, *PythonModule);
return;
}
py_actor_instance = PyObject_CallObject(py_actor_class, NULL);
if (!py_actor_instance) {
unreal_engine_py_log_error();
return;
}
py_uobject->py_proxy = py_actor_instance;
PyObject_SetAttrString(py_actor_instance, (char*)"uobject", (PyObject *)py_uobject);
if (!PyObject_HasAttrString(py_actor_instance, (char *)"tick") || PythonTickForceDisabled) {
SetActorTickEnabled(false);
}
if (!PythonDisableAutoBinding)
ue_autobind_events_for_pyclass(py_uobject, py_actor_instance);
if (!PyObject_HasAttrString(py_actor_instance, (char *)"begin_play"))
return;
PyObject *bp_ret = PyObject_CallMethod(py_actor_instance, (char *)"begin_play", NULL);
if (!bp_ret) {
unreal_engine_py_log_error();
return;
}
Py_DECREF(bp_ret);
}
// Called every frame
void APyActor::Tick(float DeltaTime)
{
Super::Tick(DeltaTime);
if (!py_actor_instance)
return;
FScopePythonGIL gil;
if (!PyObject_HasAttrString(py_actor_instance, (char *)"tick"))
return;
PyObject *ret = PyObject_CallMethod(py_actor_instance, (char *)"tick", (char *)"f", DeltaTime);
if (!ret) {
unreal_engine_py_log_error();
return;
}
Py_DECREF(ret);
}
void APyActor::CallPythonActorMethod(FString method_name, FString args)
{
if (!py_actor_instance)
return;
FScopePythonGIL gil;
PyObject *ret = nullptr;
if (args.IsEmpty()) {
ret = PyObject_CallMethod(py_actor_instance, TCHAR_TO_UTF8(*method_name), NULL);
}
else {
ret = PyObject_CallMethod(py_actor_instance, TCHAR_TO_UTF8(*method_name), (char *)"s", TCHAR_TO_UTF8(*args));
}
if (!ret) {
unreal_engine_py_log_error();
return;
}
Py_DECREF(ret);
}
bool APyActor::CallPythonActorMethodBool(FString method_name, FString args)
{
if (!py_actor_instance)
return false;
FScopePythonGIL gil;
PyObject *ret = nullptr;
if (args.IsEmpty()) {
ret = PyObject_CallMethod(py_actor_instance, TCHAR_TO_UTF8(*method_name), NULL);
}
else {
ret = PyObject_CallMethod(py_actor_instance, TCHAR_TO_UTF8(*method_name), (char *)"s", TCHAR_TO_UTF8(*args));
}
if (!ret) {
unreal_engine_py_log_error();
return false;
}
if (PyObject_IsTrue(ret)) {
Py_DECREF(ret);
return true;
}
Py_DECREF(ret);
return false;
}
FString APyActor::CallPythonActorMethodString(FString method_name, FString args)
{
if (!py_actor_instance)
return FString();
FScopePythonGIL gil;
PyObject *ret = nullptr;
if (args.IsEmpty()) {
ret = PyObject_CallMethod(py_actor_instance, TCHAR_TO_UTF8(*method_name), NULL);
}
else {
ret = PyObject_CallMethod(py_actor_instance, TCHAR_TO_UTF8(*method_name), (char *)"s", TCHAR_TO_UTF8(*args));
}
if (!ret) {
unreal_engine_py_log_error();
return FString();
}
PyObject *py_str = PyObject_Str(ret);
if (!py_str) {
Py_DECREF(ret);
return FString();
}
char *str_ret = PyUnicode_AsUTF8(py_str);
FString ret_fstring = FString(UTF8_TO_TCHAR(str_ret));
Py_DECREF(py_str);
return ret_fstring;
}
APyActor::~APyActor()
{
FScopePythonGIL gil;
ue_pydelegates_cleanup(py_uobject);
#if defined(UEPY_MEMORY_DEBUG)
if (py_actor_instance && py_actor_instance->ob_refcnt != 1) {
UE_LOG(LogPython, Error, TEXT("Inconsistent Python AActor wrapper refcnt = %d"), py_actor_instance->ob_refcnt);
}
#endif
Py_XDECREF(py_actor_instance);
#if defined(UEPY_MEMORY_DEBUG)
UE_LOG(LogPython, Warning, TEXT("Python AActor %p (mapped to %p) wrapper XDECREF'ed"), this, py_uobject ? py_uobject->ue_object : nullptr);
#endif
// this could trigger the distruction of the python/uobject mapper
Py_XDECREF(py_uobject);
}