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Iterators, other Python C API improvements 

closes #72
ref #69 - this resolves the "UICollection" (not "UIEntityCollection", perhaps renamed since the issue opened) and "UIEntityCollection" portion. The Grid point based iterators were not updated.
**RPATH updates**
Will this RPATH setting allow McRogueFace to execute using its included "lib" subdirectory after being unzipped on a new computer?

The change from "./lib" to "$ORIGIN/./lib" improves portability. The $ORIGIN token is a special Linux/Unix convention that refers to the directory containing the executable itself. This makes the path relative to the executable's location rather than the current working directory, which means McRogueFace will correctly find its libraries in the lib subdirectory regardless of where it's run from after being unzipped on a new computer.

**New standard object initialization**
PyColor, PyVector
  - Fixed all 15 PyTypeObject definitions to use proper designated initializer syntax
  - Replaced PyType_GenericAlloc usage in PyColor.cpp and PyVector.cpp
  - Updated PyObject_New usage in UIEntity.cpp
  - All object creation now uses module-based type lookups instead of static references
  - Created centralized utilities in PyObjectUtils.h

**RAII Wrappers**
automatic reference counting via C++ object lifecycle
  - Created PyRAII.h with PyObjectRef and PyTypeRef classes
  - These provide automatic reference counting management
  - Updated PyColor::from_arg() to demonstrate RAII usage
  - Prevents memory leaks and reference counting errors

**Python object base in type defs:**
`.ob_base = {.ob_base = {.ob_refcnt = 1, .ob_type = NULL}, .ob_size = 0}`
PyColor, PyTexture, PyVector, UICaption, UICollection, UIEntity, UIFrame, UIGrid

**convertDrawableToPython**
replace crazy macro to detect the correct Python type of a UIDrawable instance

  - Removed the problematic macro from UIDrawable.h
  - Created template-based functions in PyObjectUtils.h
  - Updated UICollection.cpp to use local helper function
  - The new approach is cleaner, more debuggable, and avoids static type references

**Iterator fixes**
tp_iter on UICollection, UIGrid, UIGridPoint, UISprite
UIGrid logic improved, standard

**List vs Vector usage analysis**
there are different use cases that weren't standardized:
  - UICollection (for Frame children) uses std::vector<std::shared_ptr<UIDrawable>>
  - UIEntityCollection (for Grid entities) uses std::list<std::shared_ptr<UIEntity>>

The rationale is currently connected to frequency of expected changes.
* A "UICollection" is likely either all visible or not; it's also likely to be created once and have a static set of contents. They should be contiguous in memory in hopes that this helps rendering speed.
* A "UIEntityCollection" is expected to be rendered as a subset within the visible rectangle of the UIGrid. Scrolling the grid or gameplay logic is likely to frequently create and destroy entities. In general I expect Entity collections to have a much higher common size than UICollections. For these reasons I've made them Lists in hopes that they never have to be reallocated or moved during a frame.
This commit is contained in:
John McCardle 2025-05-31 08:58:52 -04:00
parent f594998dc3
commit 167636ce8c
21 changed files with 410 additions and 106 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
CMakeLists.txt
View File

@ -46,7 +46,7 @@ endif()
# Add the directory where the linker should look for the libraries
#link_directories(${CMAKE_SOURCE_DIR}/deps_linux)
link_directories(${CMAKE_SOURCE_DIR}/lib)
link_directories(${CMAKE_SOURCE_DIR}/__lib)
# Define the executable target before linking libraries
add_executable(mcrogueface ${SOURCES})
@ -67,9 +67,9 @@ add_custom_command(TARGET mcrogueface POST_BUILD
# Copy Python standard library to build directory
add_custom_command(TARGET mcrogueface POST_BUILD
COMMAND ${CMAKE_COMMAND} -E copy_directory
${CMAKE_SOURCE_DIR}/lib $<TARGET_FILE_DIR:mcrogueface>/lib)
${CMAKE_SOURCE_DIR}/__lib $<TARGET_FILE_DIR:mcrogueface>/lib)
# rpath for including shared libraries
set_target_properties(mcrogueface PROPERTIES
INSTALL_RPATH "./lib")
INSTALL_RPATH "$ORIGIN/./lib")

10
src/McRFPy_API.cpp
View File

@ -84,9 +84,15 @@ PyObject* PyInit_mcrfpy()
auto t = pytypes[i];
while (t != nullptr)
{
/*std::cout << */ PyType_Ready(t); /*<< std::endl; */
std::cout << "Registering type: " << t->tp_name << std::endl;
if (PyType_Ready(t) < 0) {
std::cout << "ERROR: PyType_Ready failed for " << t->tp_name << std::endl;
return NULL;
}
std::cout << " tp_alloc after PyType_Ready: " << (void*)t->tp_alloc << std::endl;
PyModule_AddType(m, t);
t = pytypes[i++];
i++;
t = pytypes[i];
}
// Add default_font and default_texture to module

48
src/PyColor.cpp
View File

@ -1,5 +1,7 @@
#include "PyColor.h"
#include "McRFPy_API.h"
#include "PyObjectUtils.h"
#include "PyRAII.h"
PyGetSetDef PyColor::getsetters[] = {
{"r", (getter)PyColor::get_member, (setter)PyColor::set_member, "Red component", (void*)0},
@ -14,11 +16,16 @@ PyColor::PyColor(sf::Color target)
PyObject* PyColor::pyObject()
{
PyObject* obj = PyType_GenericAlloc(&mcrfpydef::PyColorType, 0);
Py_INCREF(obj);
PyColorObject* self = (PyColorObject*)obj;
self->data = data;
return obj;
PyTypeObject* type = (PyTypeObject*)PyObject_GetAttrString(McRFPy_API::mcrf_module, "Color");
if (!type) return nullptr;
PyColorObject* obj = (PyColorObject*)type->tp_alloc(type, 0);
Py_DECREF(type);
if (obj) {
obj->data = data;
}
return (PyObject*)obj;
}
sf::Color PyColor::fromPy(PyObject* obj)
@ -138,13 +145,30 @@ int PyColor::set_member(PyObject* obj, PyObject* value, void* closure)
PyColorObject* PyColor::from_arg(PyObject* args)
{
auto type = (PyTypeObject*)PyObject_GetAttrString(McRFPy_API::mcrf_module, "Color");
if (PyObject_IsInstance(args, (PyObject*)type)) return (PyColorObject*)args;
auto obj = (PyColorObject*)type->tp_alloc(type, 0);
int err = init(obj, args, NULL);
if (err) {
Py_DECREF(obj);
// Use RAII for type reference management
PyRAII::PyTypeRef type("Color", McRFPy_API::mcrf_module);
if (!type) {
return NULL;
}
return obj;
// Check if args is already a Color instance
if (PyObject_IsInstance(args, (PyObject*)type.get())) {
return (PyColorObject*)args;
}
// Create new Color object using RAII
PyRAII::PyObjectRef obj(type->tp_alloc(type.get(), 0), true);
if (!obj) {
return NULL;
}
// Initialize the object
int err = init((PyColorObject*)obj.get(), args, NULL);
if (err) {
// obj will be automatically cleaned up when it goes out of scope
return NULL;
}
// Release ownership and return
return (PyColorObject*)obj.release();
}

1
src/PyColor.h
View File

@ -34,6 +34,7 @@ public:
namespace mcrfpydef {
static PyTypeObject PyColorType = {
.ob_base = {.ob_base = {.ob_refcnt = 1, .ob_type = NULL}, .ob_size = 0},
.tp_name = "mcrfpy.Color",
.tp_basicsize = sizeof(PyColorObject),
.tp_itemsize = 0,

1
src/PyFont.h
View File

@ -25,6 +25,7 @@ public:
namespace mcrfpydef {
static PyTypeObject PyFontType = {
.ob_base = {.ob_base = {.ob_refcnt = 1, .ob_type = NULL}, .ob_size = 0},
.tp_name = "mcrfpy.Font",
.tp_basicsize = sizeof(PyFontObject),
.tp_itemsize = 0,

76
src/PyObjectUtils.h Normal file
View File

@ -0,0 +1,76 @@
#pragma once
#include "Common.h"
#include "Python.h"
#include "McRFPy_API.h"
#include "PyRAII.h"
namespace PyObjectUtils {
// Template for getting Python type object from module
template<typename T>
PyTypeObject* getPythonType(const char* typeName) {
PyTypeObject* type = (PyTypeObject*)PyObject_GetAttrString(McRFPy_API::mcrf_module, typeName);
if (!type) {
PyErr_Format(PyExc_RuntimeError, "Could not find %s type in module", typeName);
}
return type;
}
// Generic function to create a Python object of given type
inline PyObject* createPyObjectGeneric(const char* typeName) {
PyTypeObject* type = getPythonType<void>(typeName);
if (!type) return nullptr;
PyObject* obj = type->tp_alloc(type, 0);
Py_DECREF(type);
return obj;
}
// Helper function to allocate and initialize a Python object with data
template<typename PyObjType, typename DataType>
PyObject* createPyObjectWithData(const char* typeName, DataType data) {
PyTypeObject* type = getPythonType<void>(typeName);
if (!type) return nullptr;
PyObjType* obj = (PyObjType*)type->tp_alloc(type, 0);
Py_DECREF(type);
if (obj) {
obj->data = data;
}
return (PyObject*)obj;
}
// Function to convert UIDrawable to appropriate Python object
// This is moved to UICollection.cpp to avoid circular dependencies
// RAII-based object creation example
inline PyObject* createPyObjectGenericRAII(const char* typeName) {
PyRAII::PyTypeRef type(typeName, McRFPy_API::mcrf_module);
if (!type) {
PyErr_Format(PyExc_RuntimeError, "Could not find %s type in module", typeName);
return nullptr;
}
PyObject* obj = type->tp_alloc(type.get(), 0);
// Return the new reference (caller owns it)
return obj;
}
// Example of using PyObjectRef for safer reference management
template<typename PyObjType, typename DataType>
PyObject* createPyObjectWithDataRAII(const char* typeName, DataType data) {
PyRAII::PyObjectRef obj = PyRAII::createObject<PyObjType>(typeName, McRFPy_API::mcrf_module);
if (!obj) {
PyErr_Format(PyExc_RuntimeError, "Could not create %s object", typeName);
return nullptr;
}
// Access the object through the RAII wrapper
((PyObjType*)obj.get())->data = data;
// Release ownership to return to Python
return obj.release();
}
}

138
src/PyRAII.h Normal file
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@ -0,0 +1,138 @@
#pragma once
#include "Python.h"
#include <utility>
namespace PyRAII {
// RAII wrapper for PyObject* that automatically manages reference counting
class PyObjectRef {
private:
PyObject* ptr;
public:
// Constructors
PyObjectRef() : ptr(nullptr) {}
explicit PyObjectRef(PyObject* p, bool steal_ref = false) : ptr(p) {
if (ptr && !steal_ref) {
Py_INCREF(ptr);
}
}
// Copy constructor
PyObjectRef(const PyObjectRef& other) : ptr(other.ptr) {
if (ptr) {
Py_INCREF(ptr);
}
}
// Move constructor
PyObjectRef(PyObjectRef&& other) noexcept : ptr(other.ptr) {
other.ptr = nullptr;
}
// Destructor
~PyObjectRef() {
Py_XDECREF(ptr);
}
// Copy assignment
PyObjectRef& operator=(const PyObjectRef& other) {
if (this != &other) {
Py_XDECREF(ptr);
ptr = other.ptr;
if (ptr) {
Py_INCREF(ptr);
}
}
return *this;
}
// Move assignment
PyObjectRef& operator=(PyObjectRef&& other) noexcept {
if (this != &other) {
Py_XDECREF(ptr);
ptr = other.ptr;
other.ptr = nullptr;
}
return *this;
}
// Access operators
PyObject* get() const { return ptr; }
PyObject* operator->() const { return ptr; }
PyObject& operator*() const { return *ptr; }
operator bool() const { return ptr != nullptr; }
// Release ownership (for returning to Python)
PyObject* release() {
PyObject* temp = ptr;
ptr = nullptr;
return temp;
}
// Reset with new pointer
void reset(PyObject* p = nullptr, bool steal_ref = false) {
if (p != ptr) {
Py_XDECREF(ptr);
ptr = p;
if (ptr && !steal_ref) {
Py_INCREF(ptr);
}
}
}
};
// Helper class for managing PyTypeObject* references from module lookups
class PyTypeRef {
private:
PyTypeObject* type;
public:
PyTypeRef() : type(nullptr) {}
explicit PyTypeRef(const char* typeName, PyObject* module) {
type = (PyTypeObject*)PyObject_GetAttrString(module, typeName);
// GetAttrString returns a new reference, so we own it
}
~PyTypeRef() {
Py_XDECREF((PyObject*)type);
}
// Delete copy operations to prevent accidental reference issues
PyTypeRef(const PyTypeRef&) = delete;
PyTypeRef& operator=(const PyTypeRef&) = delete;
// Allow move operations
PyTypeRef(PyTypeRef&& other) noexcept : type(other.type) {
other.type = nullptr;
}
PyTypeRef& operator=(PyTypeRef&& other) noexcept {
if (this != &other) {
Py_XDECREF((PyObject*)type);
type = other.type;
other.type = nullptr;
}
return *this;
}
PyTypeObject* get() const { return type; }
PyTypeObject* operator->() const { return type; }
operator bool() const { return type != nullptr; }
};
// Convenience function to create a new object with RAII
template<typename PyObjType>
PyObjectRef createObject(const char* typeName, PyObject* module) {
PyTypeRef type(typeName, module);
if (!type) {
return PyObjectRef();
}
PyObject* obj = type->tp_alloc(type.get(), 0);
// tp_alloc returns a new reference, so we steal it
return PyObjectRef(obj, true);
}
}

1
src/PyTexture.h
View File

@ -29,6 +29,7 @@ public:
namespace mcrfpydef {
static PyTypeObject PyTextureType = {
.ob_base = {.ob_base = {.ob_refcnt = 1, .ob_type = NULL}, .ob_size = 0},
.tp_name = "mcrfpy.Texture",
.tp_basicsize = sizeof(PyTextureObject),
.tp_itemsize = 0,

16
src/PyVector.cpp
View File

@ -1,4 +1,5 @@
#include "PyVector.h"
#include "PyObjectUtils.h"
PyGetSetDef PyVector::getsetters[] = {
{"x", (getter)PyVector::get_member, (setter)PyVector::set_member, "X/horizontal component", (void*)0},
@ -11,11 +12,16 @@ PyVector::PyVector(sf::Vector2f target)
PyObject* PyVector::pyObject()
{
PyObject* obj = PyType_GenericAlloc(&mcrfpydef::PyVectorType, 0);
Py_INCREF(obj);
PyVectorObject* self = (PyVectorObject*)obj;
self->data = data;
return obj;
PyTypeObject* type = (PyTypeObject*)PyObject_GetAttrString(McRFPy_API::mcrf_module, "Vector");
if (!type) return nullptr;
PyVectorObject* obj = (PyVectorObject*)type->tp_alloc(type, 0);
Py_DECREF(type);
if (obj) {
obj->data = data;
}
return (PyObject*)obj;
}
sf::Vector2f PyVector::fromPy(PyObject* obj)

1
src/PyVector.h
View File

@ -30,6 +30,7 @@ public:
namespace mcrfpydef {
static PyTypeObject PyVectorType = {
.ob_base = {.ob_base = {.ob_refcnt = 1, .ob_type = NULL}, .ob_size = 0},
.tp_name = "mcrfpy.Vector",
.tp_basicsize = sizeof(PyVectorObject),
.tp_itemsize = 0,

1
src/UICaption.h
View File

@ -27,6 +27,7 @@ public:
namespace mcrfpydef {
static PyTypeObject PyUICaptionType = {
.ob_base = {.ob_base = {.ob_refcnt = 1, .ob_type = NULL}, .ob_size = 0},
.tp_name = "mcrfpy.Caption",
.tp_basicsize = sizeof(PyUICaptionObject),
.tp_itemsize = 0,

95
src/UICollection.cpp
View File

@ -5,9 +5,76 @@
#include "UISprite.h"
#include "UIGrid.h"
#include "McRFPy_API.h"
#include "PyObjectUtils.h"
using namespace mcrfpydef;
// Local helper function to convert UIDrawable to appropriate Python object
static PyObject* convertDrawableToPython(std::shared_ptr<UIDrawable> drawable) {
if (!drawable) {
Py_RETURN_NONE;
}
PyTypeObject* type = nullptr;
PyObject* obj = nullptr;
switch (drawable->derived_type()) {
case PyObjectsEnum::UIFRAME:
{
type = (PyTypeObject*)PyObject_GetAttrString(McRFPy_API::mcrf_module, "Frame");
if (!type) return nullptr;
auto pyObj = (PyUIFrameObject*)type->tp_alloc(type, 0);
if (pyObj) {
pyObj->data = std::static_pointer_cast<UIFrame>(drawable);
}
obj = (PyObject*)pyObj;
break;
}
case PyObjectsEnum::UICAPTION:
{
type = (PyTypeObject*)PyObject_GetAttrString(McRFPy_API::mcrf_module, "Caption");
if (!type) return nullptr;
auto pyObj = (PyUICaptionObject*)type->tp_alloc(type, 0);
if (pyObj) {
pyObj->data = std::static_pointer_cast<UICaption>(drawable);
pyObj->font = nullptr;
}
obj = (PyObject*)pyObj;
break;
}
case PyObjectsEnum::UISPRITE:
{
type = (PyTypeObject*)PyObject_GetAttrString(McRFPy_API::mcrf_module, "Sprite");
if (!type) return nullptr;
auto pyObj = (PyUISpriteObject*)type->tp_alloc(type, 0);
if (pyObj) {
pyObj->data = std::static_pointer_cast<UISprite>(drawable);
}
obj = (PyObject*)pyObj;
break;
}
case PyObjectsEnum::UIGRID:
{
type = (PyTypeObject*)PyObject_GetAttrString(McRFPy_API::mcrf_module, "Grid");
if (!type) return nullptr;
auto pyObj = (PyUIGridObject*)type->tp_alloc(type, 0);
if (pyObj) {
pyObj->data = std::static_pointer_cast<UIGrid>(drawable);
}
obj = (PyObject*)pyObj;
break;
}
default:
PyErr_SetString(PyExc_TypeError, "Unknown UIDrawable derived type");
return nullptr;
}
if (type) {
Py_DECREF(type);
}
return obj;
}
int UICollectionIter::init(PyUICollectionIterObject* self, PyObject* args, PyObject* kwds)
{
PyErr_SetString(PyExc_TypeError, "UICollection cannot be instantiated: a C++ data source is required.");
@ -16,6 +83,12 @@ int UICollectionIter::init(PyUICollectionIterObject* self, PyObject* args, PyObj
PyObject* UICollectionIter::next(PyUICollectionIterObject* self)
{
// Check if self and self->data are valid
if (!self || !self->data) {
PyErr_SetString(PyExc_RuntimeError, "Iterator object or data is null");
return NULL;
}
if (self->data->size() != self->start_size)
{
PyErr_SetString(PyExc_RuntimeError, "collection changed size during iteration");
@ -35,9 +108,8 @@ PyObject* UICollectionIter::next(PyUICollectionIterObject* self)
return NULL;
}
auto target = (*vec)[self->index-1];
// TODO build PyObject* of the correct UIDrawable subclass to return
//return py_instance(target);
return NULL;
// Return the proper Python object for this UIDrawable
return convertDrawableToPython(target);
}
PyObject* UICollectionIter::repr(PyUICollectionIterObject* self)
@ -71,8 +143,7 @@ PyObject* UICollection::getitem(PyUICollectionObject* self, Py_ssize_t index) {
return NULL;
}
auto target = (*vec)[index];
RET_PY_INSTANCE(target);
return NULL;
return convertDrawableToPython(target);
}
@ -189,9 +260,18 @@ int UICollection::init(PyUICollectionObject* self, PyObject* args, PyObject* kwd
PyObject* UICollection::iter(PyUICollectionObject* self)
{
PyUICollectionIterObject* iterObj;
iterObj = (PyUICollectionIterObject*)PyUICollectionIterType.tp_alloc(&PyUICollectionIterType, 0);
// Get the iterator type from the module to ensure we have the registered version
PyTypeObject* iterType = (PyTypeObject*)PyObject_GetAttrString(McRFPy_API::mcrf_module, "UICollectionIter");
if (!iterType) {
PyErr_SetString(PyExc_RuntimeError, "Could not find UICollectionIter type in module");
return NULL;
}
// Allocate new iterator instance
PyUICollectionIterObject* iterObj = (PyUICollectionIterObject*)iterType->tp_alloc(iterType, 0);
if (iterObj == NULL) {
Py_DECREF(iterType);
return NULL; // Failed to allocate memory for the iterator object
}
@ -199,5 +279,6 @@ PyObject* UICollection::iter(PyUICollectionObject* self)
iterObj->index = 0;
iterObj->start_size = self->data->size();
Py_DECREF(iterType);
return (PyObject*)iterObj;
}

6
src/UICollection.h
View File

@ -30,7 +30,7 @@ public:
namespace mcrfpydef {
static PyTypeObject PyUICollectionIterType = {
//PyVarObject_HEAD_INIT(NULL, 0)
.ob_base = {.ob_base = {.ob_refcnt = 1, .ob_type = NULL}, .ob_size = 0},
.tp_name = "mcrfpy.UICollectionIter",
.tp_basicsize = sizeof(PyUICollectionIterObject),
.tp_itemsize = 0,
@ -44,9 +44,11 @@ namespace mcrfpydef {
.tp_repr = (reprfunc)UICollectionIter::repr,
.tp_flags = Py_TPFLAGS_DEFAULT,
.tp_doc = PyDoc_STR("Iterator for a collection of UI objects"),
.tp_iter = PyObject_SelfIter,
.tp_iternext = (iternextfunc)UICollectionIter::next,
//.tp_getset = PyUICollection_getset,
.tp_init = (initproc)UICollectionIter::init, // just raise an exception
.tp_alloc = PyType_GenericAlloc,
//TODO - as static method, not inline lambda def, please
.tp_new = [](PyTypeObject* type, PyObject* args, PyObject* kwds) -> PyObject*
{
@ -56,7 +58,7 @@ namespace mcrfpydef {
};
static PyTypeObject PyUICollectionType = {
//PyVarObject_/HEAD_INIT(NULL, 0)
.ob_base = {.ob_base = {.ob_refcnt = 1, .ob_type = NULL}, .ob_size = 0},
.tp_name = "mcrfpy.UICollection",
.tp_basicsize = sizeof(PyUICollectionObject),
.tp_itemsize = 0,

56
src/UIDrawable.h
View File

@ -57,59 +57,9 @@ typedef struct {
} PyUICollectionIterObject;
namespace mcrfpydef {
//PyObject* py_instance(std::shared_ptr<UIDrawable> source);
// This function segfaults on tp_alloc for an unknown reason, but works inline with mcrfpydef:: methods.
#define RET_PY_INSTANCE(target) { \
switch (target->derived_type()) \
{ \
case PyObjectsEnum::UIFRAME: \
{ \
PyUIFrameObject* o = (PyUIFrameObject*)((&PyUIFrameType)->tp_alloc(&PyUIFrameType, 0)); \
if (o) \
{ \
auto p = std::static_pointer_cast<UIFrame>(target); \
o->data = p; \
auto utarget = o->data; \
} \
return (PyObject*)o; \
} \
case PyObjectsEnum::UICAPTION: \
{ \
PyUICaptionObject* o = (PyUICaptionObject*)((&PyUICaptionType)->tp_alloc(&PyUICaptionType, 0)); \
if (o) \
{ \
auto p = std::static_pointer_cast<UICaption>(target); \
o->data = p; \
auto utarget = o->data; \
} \
return (PyObject*)o; \
} \
case PyObjectsEnum::UISPRITE: \
{ \
PyUISpriteObject* o = (PyUISpriteObject*)((&PyUISpriteType)->tp_alloc(&PyUISpriteType, 0)); \
if (o) \
{ \
auto p = std::static_pointer_cast<UISprite>(target); \
o->data = p; \
auto utarget = o->data; \
} \
return (PyObject*)o; \
} \
case PyObjectsEnum::UIGRID: \
{ \
PyUIGridObject* o = (PyUIGridObject*)((&PyUIGridType)->tp_alloc(&PyUIGridType, 0)); \
if (o) \
{ \
auto p = std::static_pointer_cast<UIGrid>(target); \
o->data = p; \
auto utarget = o->data; \
} \
return (PyObject*)o; \
} \
} \
}
// end macro definition
// DEPRECATED: RET_PY_INSTANCE macro has been replaced with template functions in PyObjectUtils.h
// The macro was difficult to debug and used static type references that could cause initialization order issues.
// Use PyObjectUtils::convertDrawableToPython() or PyObjectUtils::createPyObject<T>() instead.
//TODO: add this method to class scope; move implementation to .cpp file
/*

5
src/UIEntity.cpp
View File

@ -1,6 +1,7 @@
#include "UIEntity.h"
#include "UIGrid.h"
#include "McRFPy_API.h"
#include "PyObjectUtils.h"
UIEntity::UIEntity() {} // this will not work lol. TODO remove default constructor by finding the shared pointer inits that use it
@ -129,7 +130,9 @@ sf::Vector2i PyObject_to_sfVector2i(PyObject* obj) {
// TODO - deprecate / remove this helper
PyObject* UIGridPointState_to_PyObject(const UIGridPointState& state) {
return PyObject_New(PyObject, (PyTypeObject*)PyObject_GetAttrString(McRFPy_API::mcrf_module, "GridPointState"));
// This function is incomplete - it creates an empty object without setting state data
// Should use PyObjectUtils::createGridPointState() instead
return PyObjectUtils::createPyObjectGeneric("GridPointState");
}
PyObject* UIGridPointStateVector_to_PyList(const std::vector<UIGridPointState>& vec) {

2
src/UIEntity.h
View File

@ -61,7 +61,7 @@ public:
namespace mcrfpydef {
static PyTypeObject PyUIEntityType = {
//PyVarObject_HEAD_INIT(NULL, 0)
.ob_base = {.ob_base = {.ob_refcnt = 1, .ob_type = NULL}, .ob_size = 0},
.tp_name = "mcrfpy.Entity",
.tp_basicsize = sizeof(PyUIEntityObject),
.tp_itemsize = 0,

2
src/UIFrame.h
View File

@ -46,7 +46,7 @@ public:
namespace mcrfpydef {
static PyTypeObject PyUIFrameType = {
//PyVarObject_HEAD_INIT(NULL, 0)
.ob_base = {.ob_base = {.ob_refcnt = 1, .ob_type = NULL}, .ob_size = 0},
.tp_name = "mcrfpy.Frame",
.tp_basicsize = sizeof(PyUIFrameObject),
.tp_itemsize = 0,

33
src/UIGrid.cpp
View File

@ -487,14 +487,17 @@ PyObject* UIEntityCollectionIter::next(PyUIEntityCollectionIterObject* self)
PyErr_SetString(PyExc_RuntimeError, "the collection store returned a null pointer");
return NULL;
}
// Advance list iterator since Entities are not stored in a vector (if this code even worked)
// vectors only: //auto target = (*vec)[self->index-1];
//auto l_front = (*vec).begin();
//std::advance(l_front, self->index-1);
// Advance list iterator since Entities are stored in a list, not a vector
auto l_begin = (*vec).begin();
std::advance(l_begin, self->index-1);
auto target = *l_begin;
// TODO build PyObject* of the correct UIDrawable subclass to return
//return py_instance(target);
return NULL;
// Create and return a Python Entity object
auto type = (PyTypeObject*)PyObject_GetAttrString(McRFPy_API::mcrf_module, "Entity");
auto o = (PyUIEntityObject*)type->tp_alloc(type, 0);
auto p = std::static_pointer_cast<UIEntity>(target);
o->data = p;
return (PyObject*)o;
}
PyObject* UIEntityCollectionIter::repr(PyUIEntityCollectionIterObject* self)
@ -625,11 +628,18 @@ int UIEntityCollection::init(PyUIEntityCollectionObject* self, PyObject* args, P
PyObject* UIEntityCollection::iter(PyUIEntityCollectionObject* self)
{
//PyUIEntityCollectionIterObject* iterObj;
//iterObj = (PyUIEntityCollectionIterObject*)PyUIEntityCollectionIterType.tp_alloc(&PyUIEntityCollectionIterType, 0);
auto type = (PyTypeObject*)PyObject_GetAttrString(McRFPy_API::mcrf_module, "EntityCollectionIter");
auto iterObj = (PyUIEntityCollectionIterObject*)type->tp_alloc(type, 0);
// Get the iterator type from the module to ensure we have the registered version
PyTypeObject* iterType = (PyTypeObject*)PyObject_GetAttrString(McRFPy_API::mcrf_module, "UIEntityCollectionIter");
if (!iterType) {
PyErr_SetString(PyExc_RuntimeError, "Could not find UIEntityCollectionIter type in module");
return NULL;
}
// Allocate new iterator instance
PyUIEntityCollectionIterObject* iterObj = (PyUIEntityCollectionIterObject*)iterType->tp_alloc(iterType, 0);
if (iterObj == NULL) {
Py_DECREF(iterType);
return NULL; // Failed to allocate memory for the iterator object
}
@ -637,5 +647,6 @@ PyObject* UIEntityCollection::iter(PyUIEntityCollectionObject* self)
iterObj->index = 0;
iterObj->start_size = self->data->size();
Py_DECREF(iterType);
return (PyObject*)iterObj;
}

10
src/UIGrid.h
View File

@ -99,7 +99,7 @@ public:
namespace mcrfpydef {
static PyTypeObject PyUIGridType = {
//PyVarObject_HEAD_INIT(NULL, 0)
.ob_base = {.ob_base = {.ob_refcnt = 1, .ob_type = NULL}, .ob_size = 0},
.tp_name = "mcrfpy.Grid",
.tp_basicsize = sizeof(PyUIGridObject),
.tp_itemsize = 0,
@ -130,8 +130,8 @@ namespace mcrfpydef {
};
static PyTypeObject PyUIEntityCollectionIterType = {
//PyVarObject_HEAD_INIT(NULL, 0)
.tp_name = "mcrfpy.UICollectionIter",
.ob_base = {.ob_base = {.ob_refcnt = 1, .ob_type = NULL}, .ob_size = 0},
.tp_name = "mcrfpy.UIEntityCollectionIter",
.tp_basicsize = sizeof(PyUIEntityCollectionIterObject),
.tp_itemsize = 0,
.tp_dealloc = (destructor)[](PyObject* self)
@ -143,9 +143,11 @@ namespace mcrfpydef {
.tp_repr = (reprfunc)UIEntityCollectionIter::repr,
.tp_flags = Py_TPFLAGS_DEFAULT,
.tp_doc = PyDoc_STR("Iterator for a collection of UI objects"),
.tp_iter = PyObject_SelfIter,
.tp_iternext = (iternextfunc)UIEntityCollectionIter::next,
//.tp_getset = UIEntityCollection::getset,
.tp_init = (initproc)UIEntityCollectionIter::init, // just raise an exception
.tp_alloc = PyType_GenericAlloc,
.tp_new = [](PyTypeObject* type, PyObject* args, PyObject* kwds) -> PyObject*
{
PyErr_SetString(PyExc_TypeError, "UICollection cannot be instantiated: a C++ data source is required.");
@ -154,7 +156,7 @@ namespace mcrfpydef {
};
static PyTypeObject PyUIEntityCollectionType = {
//PyVarObject_/HEAD_INIT(NULL, 0)
.ob_base = {.ob_base = {.ob_refcnt = 1, .ob_type = NULL}, .ob_size = 0},
.tp_name = "mcrfpy.EntityCollection",
.tp_basicsize = sizeof(PyUIEntityCollectionObject),
.tp_itemsize = 0,

4
src/UIGridPoint.h
View File

@ -66,7 +66,7 @@ public:
namespace mcrfpydef {
static PyTypeObject PyUIGridPointType = {
//PyVarObject_HEAD_INIT(NULL, 0)
.ob_base = {.ob_base = {.ob_refcnt = 1, .ob_type = NULL}, .ob_size = 0},
.tp_name = "mcrfpy.GridPoint",
.tp_basicsize = sizeof(PyUIGridPointObject),
.tp_itemsize = 0,
@ -79,7 +79,7 @@ namespace mcrfpydef {
};
static PyTypeObject PyUIGridPointStateType = {
//PyVarObject_HEAD_INIT(NULL, 0)
.ob_base = {.ob_base = {.ob_refcnt = 1, .ob_type = NULL}, .ob_size = 0},
.tp_name = "mcrfpy.GridPointState",
.tp_basicsize = sizeof(PyUIGridPointStateObject),
.tp_itemsize = 0,

2
src/UISprite.h
View File

@ -57,7 +57,7 @@ public:
namespace mcrfpydef {
static PyTypeObject PyUISpriteType = {
//PyVarObject_HEAD_INIT(NULL, 0)
.ob_base = {.ob_base = {.ob_refcnt = 1, .ob_type = NULL}, .ob_size = 0},
.tp_name = "mcrfpy.Sprite",
.tp_basicsize = sizeof(PyUISpriteObject),
.tp_itemsize = 0,