Fix randomly happening floating point error during clipping.

CMakeLists.txt

@@ -66,6 +66,7 @@ add_executable(${PROJECT_NAME}
 	src/texture.cpp
 	src/movingobject.cpp
 	src/character.cpp
+	src/rect_to_sdl.cpp
 )
 
 target_include_directories(${PROJECT_NAME} SYSTEM

src/gamescenebase.cpp

@@ -11,7 +11,6 @@
 #if !defined(NDEBUG)
 #	include "compatibility.h"
 #	include <cmath>
-#	include <limits>
 #endif
 
 namespace curry {
@@ -66,7 +65,7 @@ namespace curry {
 		///----------------------------------------------------------------------
 		bool clip_rect (Rect<float>& parSrc, Rect<float>& parDest, const Rect<float>& parClip) {
 			typedef Rect<float> RectFloat;
-			assert(are_equal_rel(parSrc.width(), parDest.width(), std::numeric_limits<float>::epsilon()));
+			assert(are_equal_rel(parSrc.width(), parDest.width(), 0.00001f));
 			assert(parSrc.is_valid());
 			assert(parDest.is_valid());
 
@@ -99,7 +98,7 @@ namespace curry {
 				assert(dst.is_valid());
 				assert(dst.from >= parClip.from);
 				assert(dst.to <= parClip.to);
-				assert(are_equal_rel(src.width(), dst.width(), std::numeric_limits<float>::epsilon()));
+				assert(are_equal_rel(src.width(), dst.width(), 0.00001f));
 			}
 			parDest = dst;
 			parSrc = src;

src/rect_to_sdl.cpp

@@ -0,0 +1,15 @@
+#include "rect_to_sdl.hpp"
+#include <cmath>
+
+namespace curry {
+	SDL_Rect make_sdlrect (const Rect<float>& parOther) {
+		typedef decltype(std::declval<SDL_Rect>().w) ValueType;
+
+		return SDL_Rect{
+			static_cast<ValueType>(std::lround(parOther.left())),
+			static_cast<ValueType>(std::lround(parOther.top())),
+			static_cast<ValueType>(std::lround(parOther.width())),
+			static_cast<ValueType>(std::lround(parOther.height()))
+		};
+	}
+} //namespace curry

src/rect_to_sdl.hpp

@@ -1,6 +1,7 @@
 #pragma once
 
 #include "rect.hpp"
+#include "compatibility.h"
 #include <SDL2/SDL.h>
 #include <utility>
 
@@ -16,4 +17,6 @@ namespace curry {
 			static_cast<ValueType>(parOther.height())
 		};
 	}
+
+	SDL_Rect make_sdlrect (const Rect<float>& parOther) a_pure;
 } //namespace curry