Not bad for a quick first salvo, but I cannot figure out why init isn't cooperating.

src/McRFPy_API.cpp

@@ -56,7 +56,7 @@ PyObject* PyInit_mcrfpy()
     using namespace mcrfpydef;
     PyTypeObject* pytypes[] = {
         /*SFML exposed types*/
-        &PyColorType, /*&PyLinkedColorType,*/ &PyFontType, &PyTextureType,
+        &PyColorType, /*&PyLinkedColorType,*/ &PyFontType, &PyTextureType, &PyVectorType,
 
         /*UI widgets*/
         &PyUICaptionType, &PyUISpriteType, &PyUIFrameType, &PyUIEntityType, &PyUIGridType,

src/PyVector.cpp

@@ -0,0 +1,113 @@
+#include "PyVector.h"
+
+PyGetSetDef PyVector::getsetters[] = {
+    {"x", (getter)PyVector::get_member, (setter)PyVector::set_member, "X/horizontal component",   (void*)0},
+    {"y", (getter)PyVector::get_member, (setter)PyVector::set_member, "Y/vertical component",     (void*)1},
+    {NULL}
+};
+
+PyVector::PyVector(sf::Vector2f target)
+:data(target) {}
+
+PyObject* PyVector::pyObject()
+{
+    PyObject* obj = PyType_GenericAlloc(&mcrfpydef::PyVectorType, 0);
+    Py_INCREF(obj);
+    PyVectorObject* self = (PyVectorObject*)obj;
+    self->data = data;
+    return obj;
+}
+
+sf::Vector2f PyVector::fromPy(PyObject* obj)
+{
+    PyVectorObject* self = (PyVectorObject*)obj;
+    return self->data;
+}
+
+sf::Vector2f PyVector::fromPy(PyVectorObject* self)
+{
+    return self->data;
+}
+
+Py_hash_t PyVector::hash(PyObject* obj)
+{
+    auto self = (PyVectorObject*)obj;
+    Py_hash_t value = 0;
+    value += self->data.x;
+    value << 8; value += self->data.y; 
+
+    return value;
+}
+
+PyObject* PyVector::repr(PyObject* obj)
+{
+    PyVectorObject* self = (PyVectorObject*)obj;
+    std::ostringstream ss;
+    sf::Vector2f v = self->data;
+    ss << "<Vector (" << v.x << ", " << v.y << ")>";
+
+    std::string repr_str = ss.str();
+    return PyUnicode_DecodeUTF8(repr_str.c_str(), repr_str.size(), "replace");
+}
+
+
+int PyVector::init(PyVectorObject* self, PyObject* args, PyObject* kwds)
+{
+    using namespace mcrfpydef;
+    static const char* keywords[] = { "x", "y", nullptr };
+    PyObject* leader;
+    double x=0, y=0;
+    if (!PyArg_ParseTupleAndKeywords, args, kwds, "|Of", leader, &y)
+    {
+        //PyErr_SetString(PyExc_TypeError, "mcrfpy.Vector requires a 2-tuple or two numeric values");
+        return 0;
+    }
+
+    // if the "r" arg is already a vector, yoink that color value
+    if (PyObject_IsInstance(leader, (PyObject*)&PyVectorType))
+    {
+        self->data = ((PyVectorObject*)leader)->data;
+        return 0;
+    }
+    // else if the "r" arg is a 3-tuple, initialize to (r, g, b, 255)
+    //     (if the "r" arg is a 4-tuple, initialize to (r, g, b, a))
+    else if (PyTuple_Check(leader))
+    {
+        if (PyTuple_Size(leader) != 2)
+        {
+            PyErr_SetString(PyExc_TypeError, "Invalid tuple length: mcrfpy.Vector requires a 2-tuple");
+            return -1;
+        }
+        x = PyFloat_AsDouble(PyTuple_GetItem(leader, 0));
+        y = PyFloat_AsDouble(PyTuple_GetItem(leader, 1));
+
+        self->data = sf::Vector2f(x, y);
+    }
+    // else - 
+    else if (!PyFloat_Check(leader) && !(PyLong_Check(leader)))
+    {
+        PyErr_SetString(PyExc_TypeError, "mcrfpy.Vector requires a 2-tuple or two numeric values");
+        return -1;
+    }
+    if (PyFloat_Check(leader)) x = PyFloat_AsDouble(leader);
+    else x = PyLong_AsDouble(leader);
+    self->data = sf::Vector2f(x, y);
+    return 0;
+}
+
+PyObject* PyVector::pynew(PyTypeObject* type, PyObject* args, PyObject* kwds)
+{
+    return (PyObject*)type->tp_alloc(type, 0);
+}
+
+PyObject* PyVector::get_member(PyObject* obj, void* closure)
+{
+    // TODO
+    return Py_None;
+}
+
+int PyVector::set_member(PyObject* obj, PyObject* value, void* closure)
+{
+    // TODO
+    return 0;
+}

src/PyVector.h

@@ -0,0 +1,42 @@
+#pragma once
+#include "Common.h"
+#include "Python.h"
+
+typedef struct {
+    PyObject_HEAD
+    sf::Vector2f data;
+} PyVectorObject;
+
+class PyVector
+{
+public:
+    sf::Vector2f data;
+    PyVector(sf::Vector2f);
+    PyVector();
+    PyObject* pyObject();
+    static sf::Vector2f fromPy(PyObject*);
+    static sf::Vector2f fromPy(PyVectorObject*);
+    static PyObject* repr(PyObject*);
+    static Py_hash_t hash(PyObject*);
+    static int init(PyVectorObject*, PyObject*, PyObject*);
+    static PyObject* pynew(PyTypeObject* type, PyObject* args=NULL, PyObject* kwds=NULL);
+    static PyObject* get_member(PyObject*, void*);
+    static int set_member(PyObject*, PyObject*, void*);
+    
+    static PyGetSetDef getsetters[];
+};
+
+namespace mcrfpydef {
+    static PyTypeObject PyVectorType = {
+        .tp_name = "mcrfpy.Vector",
+        .tp_basicsize = sizeof(PyVectorObject),
+        .tp_itemsize = 0,
+        .tp_repr = PyVector::repr,
+        .tp_hash = PyVector::hash,
+        .tp_flags = Py_TPFLAGS_DEFAULT,
+        .tp_doc = PyDoc_STR("SFML Vector Object"),
+        .tp_getset = PyVector::getsetters,
+        .tp_init = (initproc)PyVector::init,
+        .tp_new = PyVector::pynew,
+    };
+}

src/UI.h

@@ -12,6 +12,7 @@
 #include "PyTexture.h"
 #include "PyColor.h"
 //#include "PyLinkedColor.h"
+#include "PyVector.h"
 
 enum PyObjectsEnum : int
 {
@@ -587,6 +588,17 @@ static int PyUIDrawable_set_click(PyUIGridObject* self, PyObject* value, void* c
         return 0;
     }
 
+    static PyObject* PyUICaption_get_vec_member(PyUICaptionObject* self, void* closure)
+    {
+        return PyVector(self->data->text.getPosition()).pyObject();
+    }
+
+    static int PyUICaption_set_vec_member(PyUICaptionObject* self, PyObject* value, void* closure)
+    {
+        self->data->text.setPosition(PyVector::fromPy(value));
+        return 0;
+    }
+
     static PyObject* PyUICaption_get_color_member(PyUICaptionObject* self, void* closure)
     {
         // validate closure (should be impossible to be wrong, but it's thorough)
@@ -730,6 +742,7 @@ static int PyUIDrawable_set_click(PyUIGridObject* self, PyObject* value, void* c
     static PyGetSetDef PyUICaption_getsetters[] = {
         {"x", (getter)PyUICaption_get_float_member, (setter)PyUICaption_set_float_member, "X coordinate of top-left corner",   (void*)0},
         {"y", (getter)PyUICaption_get_float_member, (setter)PyUICaption_set_float_member, "Y coordinate of top-left corner",   (void*)1},
+        {"pos", (getter)PyUICaption_get_vec_member, (setter)PyUICaption_set_vec_member, "(x, y) vector", (void*)0},
         //{"w", (getter)PyUIFrame_get_float_member, (setter)PyUIFrame_set_float_member, "width of the rectangle",   (void*)2},
         //{"h", (getter)PyUIFrame_get_float_member, (setter)PyUIFrame_set_float_member, "height of the rectangle",   (void*)3},
         {"outline", (getter)PyUICaption_get_float_member, (setter)PyUICaption_set_float_member, "Thickness of the border",   (void*)4},