feat: improved sprite rendering

src/core/sprite.cpp

@@ -1,12 +1,13 @@
 #include "sprite.hpp"
 #include "core/canvas_engine.hpp"
 #include "core/math/transform.hpp"
+#include "core/math/vector.hpp"
 #include <SDL2/SDL_render.h>
 #include <cassert>
 #include <cmath>
 
 namespace ce {
-Sprite::Sprite(std::string name, std::string texture)
+Sprite::Sprite(std::string const &name, std::string texture)
 : Node2D(name) {
     std::optional<std::shared_ptr<Texture>> asset{CanvasEngine::get_singleton()->get_assets().get_asset<Texture>(texture)};
     if(asset.has_value())
@@ -23,15 +24,33 @@ void Sprite::_draw(SDL_Renderer *render, ce::Transform const &view_transform) {
     SDL_QueryTexture(this->texture->get(), NULL, NULL, &w, &h);
     Transform transform{this->get_global_transform() * view_transform};
     assert(transform.scale.x != 0 && transform.scale.y != 0); // !!!
-    float fw{transform.scale.x * (w > h ? float(w) / float(h) : 1.f)};
-    float fh{transform.scale.y * (w < h ? float(h) / float(w) : 1.f)};
-    assert(fw != 0.f && fh != 0.f);
+    ce::Vecf size{this->get_size()};
+    size.scale(view_transform.scale);
+    assert(size.x != 0.f && size.y != 0.f);
     //float fw(w), fh(h);
-    SDL_Rect src{0, 0, w, h};
-    SDL_FRect dst{transform.position.x - fw/2.f, transform.position.y - fh/2.f, fw, fh};
+    SDL_Rect src{.x=0, .y=0, .w=w, .h=h};
+    SDL_FRect dst{.x=transform.position.x - size.x/2.f, .y=transform.position.y - size.y/2.f, .w=size.x, .h=size.y};
     SDL_RenderCopyExF(render, this->texture->get(),
                       &src, &dst,
                       transform.rotation * 57.2958f,NULL,
                       SDL_FLIP_NONE);
 }
+
+void Sprite::set_texture(std::shared_ptr<Texture> texture) {
+    this->texture = texture;
+}
+
+std::shared_ptr<Texture> Sprite::get_texture() const {
+    return this->texture;
+}
+
+ce::Vecf Sprite::get_size() const {
+    int w, h;
+    SDL_QueryTexture(this->texture->get(), NULL, NULL, &w, &h);
+    ce::Transform const &transform{this->get_global_transform()};
+    return {
+        transform.scale.x * (w < h ? float(w) / float(h) : 1.f),
+        transform.scale.y * (w > h ? float(h) / float(w) : 1.f)
+    };
+}
 }

src/core/sprite.hpp

@@ -8,8 +8,13 @@ namespace ce {
 class Sprite : public Node2D {
     std::shared_ptr<Texture> texture{nullptr};
 public:
-    Sprite(std::string name, std::string texture);
+    Sprite(std::string const &name, std::string texture);
     virtual void _draw(SDL_Renderer *render, ce::Transform const &view_transform) override;
+
+    void set_texture(std::shared_ptr<Texture> texture);
+    std::shared_ptr<Texture> get_texture() const;
+
+    ce::Vecf get_size() const;
 };
 }