Codechange: Use null pointer literal instead of the NULL macro

src/blitter/32bpp_anim.cpp

@@ -414,7 +414,7 @@ void Blitter_32bppAnim::CopyToBuffer(const void *video, void *dst, int width, in
 	uint32 *udst = (uint32 *)dst;
 	const uint32 *src = (const uint32 *)video;
 
-	if (this->anim_buf == NULL) return;
+	if (this->anim_buf == nullptr) return;
 
 	const uint16 *anim_line = this->ScreenToAnimOffset((const uint32 *)video) + this->anim_buf;
 

src/blitter/32bpp_anim.hpp

@@ -26,8 +26,8 @@ protected:
 
 public:
 	Blitter_32bppAnim() :
-		anim_buf(NULL),
-		anim_alloc(NULL),
+		anim_buf(nullptr),
+		anim_alloc(nullptr),
 		anim_buf_width(0),
 		anim_buf_height(0),
 		anim_buf_pitch(0)

src/blitter/8bpp_optimized.cpp

@@ -167,7 +167,7 @@ Sprite *Blitter_8bppOptimized::Encode(const SpriteLoader::Sprite *sprite, Alloca
 			uint trans = 0;
 			uint pixels = 0;
 			uint last_colour = 0;
-			byte *count_dst = NULL;
+			byte *count_dst = nullptr;
 
 			/* Store the scaled image */
 			const SpriteLoader::CommonPixel *src = &sprite[i].data[y * sprite[i].width];
@@ -176,11 +176,11 @@ Sprite *Blitter_8bppOptimized::Encode(const SpriteLoader::Sprite *sprite, Alloca
 				uint colour = src++->m;
 
 				if (last_colour == 0 || colour == 0 || pixels == 255) {
-					if (count_dst != NULL) {
+					if (count_dst != nullptr) {
 						/* Write how many non-transparent bytes we get */
 						*count_dst = pixels;
 						pixels = 0;
-						count_dst = NULL;
+						count_dst = nullptr;
 					}
 					/* As long as we find transparency bytes, keep counting */
 					if (colour == 0 && trans != 255) {
@@ -206,7 +206,7 @@ Sprite *Blitter_8bppOptimized::Encode(const SpriteLoader::Sprite *sprite, Alloca
 				}
 			}
 
-			if (count_dst != NULL) *count_dst = pixels;
+			if (count_dst != nullptr) *count_dst = pixels;
 
 			/* Write line-ending */
 			*dst = 0; dst++;

src/blitter/factory.hpp

@@ -48,7 +48,7 @@ private:
 	 */
 	static Blitter **GetActiveBlitter()
 	{
-		static Blitter *s_blitter = NULL;
+		static Blitter *s_blitter = nullptr;
 		return &s_blitter;
 	}
 
@@ -58,8 +58,8 @@ protected:
 	 * @param name        The name of the blitter.
 	 * @param description A longer description for the blitter.
 	 * @param usable      Whether the blitter is usable (on the current computer). For example for disabling SSE blitters when the CPU can't handle them.
-	 * @pre name != NULL.
-	 * @pre description != NULL.
+	 * @pre name != nullptr.
+	 * @pre description != nullptr.
 	 * @pre There is no blitter registered with this name.
 	 */
 	BlitterFactory(const char *name, const char *description, bool usable = true) :
@@ -96,7 +96,7 @@ public:
 	static Blitter *SelectBlitter(const char *name)
 	{
 		BlitterFactory *b = GetBlitterFactory(name);
-		if (b == NULL) return NULL;
+		if (b == nullptr) return nullptr;
 
 		Blitter *newb = b->CreateInstance();
 		delete *GetActiveBlitter();
@@ -109,7 +109,7 @@ public:
 	/**
 	 * Get the blitter factory with the given name.
 	 * @param name the blitter factory to select.
-	 * @return The blitter factory, or NULL when there isn't one with the wanted name.
+	 * @return The blitter factory, or nullptr when there isn't one with the wanted name.
 	 */
 	static BlitterFactory *GetBlitterFactory(const char *name)
 	{
@@ -128,7 +128,7 @@ public:
 		}
 #endif /* defined(WITH_COCOA) */
 #endif /* defined(DEDICATED) */
-		if (GetBlitters().size() == 0) return NULL;
+		if (GetBlitters().size() == 0) return nullptr;
 		const char *bname = (StrEmpty(name)) ? default_blitter : name;
 
 		Blitters::iterator it = GetBlitters().begin();
@@ -138,7 +138,7 @@ public:
 				return b;
 			}
 		}
-		return NULL;
+		return nullptr;
 	}
 
 	/**

src/blitter/null.hpp

@@ -21,7 +21,7 @@ public:
 	void Draw(Blitter::BlitterParams *bp, BlitterMode mode, ZoomLevel zoom) override {};
 	void DrawColourMappingRect(void *dst, int width, int height, PaletteID pal) override {};
 	Sprite *Encode(const SpriteLoader::Sprite *sprite, AllocatorProc *allocator) override;
-	void *MoveTo(void *video, int x, int y) override { return NULL; };
+	void *MoveTo(void *video, int x, int y) override { return nullptr; };
 	void SetPixel(void *video, int x, int y, uint8 colour) override {};
 	void DrawRect(void *video, int width, int height, uint8 colour) override {};
 	void DrawLine(void *video, int x, int y, int x2, int y2, int screen_width, int screen_height, uint8 colour, int width, int dash) override {};