Initial PyTexture class

no testing done.
should enable rectangular (non-square) textures

"sprite" method; let's just overwrite sprites with texture coords
Hoping to replace awful code like:
`self->data->sprite.sprite.setTextureRect(self->data->sprite.itex->spriteCoordinates(val));`

with something like:
`self->data->sprite = self->data->texture->sprite(val);`

src/PyTexture.cpp

@@ -0,0 +1,20 @@
+#include "PyTexture.h"
+
+PyTexture::PyTexture(std::string filename, int sprite_w, int sprite_h)
+: sprite_width(sprite_w), sprite_height(sprite_h)
+{
+    // TODO - get image resolution and get sheet width and height
+    sheet_width = 0;
+    sheet_height = 0;
+    source = filename;
+}
+
+sf::Sprite PyTexture::sprite(int index, float x = 0.0, float y = 0.0, float s = 1.0)
+{
+    int tx = index % sprite_width, ty = index / sprite_height;
+    auto ir = sf::IntRect(tx * sprite_width, ty * sprite_height, sprite_width, sprite_height);
+    auto sprite = sf::Sprite(texture, ir);
+    sprite.setPosition(x, y);
+    sprite.setScale(s, s);
+    return sprite;
+}

src/PyTexture.h

@@ -0,0 +1,14 @@
+#pragma once
+#include "Common.h"
+#include "Python.h"
+
+class PyTexture
+{
+private:
+    sf::Texture texture;
+    std::string source;
+    int sprite_width, sprite_height, sheet_width, sheet_height;
+public:
+    PyTexture(std::string filename, int sprite_w, int sprite_h);
+    sf::Sprite sprite(int index, float x = 0.0, float y = 0.0, float s = 1.0);
+};