Fix some issues

include/amethyst.hpp

@@ -9,6 +9,7 @@
 #include <amethyst/iron.hpp>
 #include <amethyst/renderer.hpp>
 #include <amethyst/texture.hpp>
+#include <amethyst/utils.hpp>
 
 namespace Amy {
 void RegisterCxxExceptionHandler();
@@ -16,5 +17,4 @@ void RegisterCxxExceptionHandler();
 
 using Iron = Amy::Iron;
 using C3D = Amy::C3D;
-using GTrace = Amy::GTrace;
-using Utils = Amy::Utils;
+using GTrace = Amy::GTrace;

include/amethyst/c3d.hpp

@@ -30,6 +30,7 @@ class C3D {
     ivec2 Size() const { return ivec2(pWidth, pHeight); }
     void Clear() { C3D_RenderTargetClear(pTarget, C3D_CLEAR_ALL, 0, 0); }
     void Use() { C3D_FrameDrawOn(pTarget); }
+    C3D_RenderTarget* Ptr() { return pTarget; }
 
    private:
     C3D_RenderTarget* pTarget = nullptr;