refactor(Core): apply clang-tidy modernize-use-nullptr (#3819)

src/tools/map_extractor/adt.cpp

@@ -34,7 +34,7 @@ bool isHole(int holes, int i, int j)
 //
 ADT_file::ADT_file()
 {
-    a_grid = 0;
+    a_grid = nullptr;
 }
 
 ADT_file::~ADT_file()
@@ -44,7 +44,7 @@ ADT_file::~ADT_file()
 
 void ADT_file::free()
 {
-    a_grid = 0;
+    a_grid = nullptr;
     FileLoader::free();
 }
 

src/tools/map_extractor/adt.h

@@ -126,13 +126,13 @@ public:
     {
         if (offsMCVT)
             return (adt_MCVT*)((uint8*)this + offsMCVT);
-        return 0;
+        return nullptr;
     }
     adt_MCLQ* getMCLQ()
     {
         if (offsMCLQ)
             return (adt_MCLQ*)((uint8*)this + offsMCLQ);
-        return 0;
+        return nullptr;
     }
 };
 
@@ -162,7 +162,7 @@ public:
     {
         if (cells[x][y].offsMCNK)
             return (adt_MCNK*)((uint8*)this + cells[x][y].offsMCNK - 84);
-        return 0;
+        return nullptr;
     }
 };
 
@@ -209,42 +209,42 @@ public:
     {
         if (liquid[x][y].used && liquid[x][y].offsData1)
             return (adt_liquid_header*)((uint8*)this + 8 + liquid[x][y].offsData1);
-        return 0;
+        return nullptr;
     }
 
     float* getLiquidHeightMap(adt_liquid_header* h)
     {
         if (h->formatFlags & ADT_LIQUID_HEADER_NO_HIGHT)
-            return 0;
+            return nullptr;
         if (h->offsData2b)
             return (float*)((uint8*)this + 8 + h->offsData2b);
-        return 0;
+        return nullptr;
     }
 
     uint8* getLiquidLightMap(adt_liquid_header* h)
     {
         if (h->formatFlags & ADT_LIQUID_HEADER_FULL_LIGHT)
-            return 0;
+            return nullptr;
         if (h->offsData2b)
         {
             if (h->formatFlags & ADT_LIQUID_HEADER_NO_HIGHT)
                 return (uint8*)((uint8*)this + 8 + h->offsData2b);
             return (uint8*)((uint8*)this + 8 + h->offsData2b + (h->width + 1) * (h->height + 1) * 4);
         }
-        return 0;
+        return nullptr;
     }
 
     uint32* getLiquidFullLightMap(adt_liquid_header* h)
     {
         if (!(h->formatFlags & ADT_LIQUID_HEADER_FULL_LIGHT))
-            return 0;
+            return nullptr;
         if (h->offsData2b)
         {
             if (h->formatFlags & ADT_LIQUID_HEADER_NO_HIGHT)
                 return (uint32*)((uint8*)this + 8 + h->offsData2b);
             return (uint32*)((uint8*)this + 8 + h->offsData2b + (h->width + 1) * (h->height + 1) * 4);
         }
-        return 0;
+        return nullptr;
     }
 
     uint64 getLiquidShowMap(adt_liquid_header* h)

src/tools/map_extractor/loadlib.cpp

@@ -16,9 +16,9 @@ u_map_fcc MverMagic = { {'R', 'E', 'V', 'M'} };
 
 FileLoader::FileLoader()
 {
-    data = 0;
+    data = nullptr;
     data_size = 0;
-    version = 0;
+    version = nullptr;
 }
 
 FileLoader::~FileLoader()
@@ -65,7 +65,7 @@ bool FileLoader::prepareLoadedData()
 void FileLoader::free()
 {
     delete[] data;
-    data = 0;
+    data = nullptr;
     data_size = 0;
-    version = 0;
+    version = nullptr;
 }

src/tools/map_extractor/mpq_libmpq.cpp

@@ -50,7 +50,7 @@ void MPQArchive::close()
 
 MPQFile::MPQFile(const char* filename):
     eof(false),
-    buffer(0),
+    buffer(nullptr),
     pointer(0),
     size(0)
 {
@@ -68,7 +68,7 @@ MPQFile::MPQFile(const char* filename):
         {
             //            printf("warning: file %s has size %d; cannot read.\n", filename, size);
             eof = true;
-            buffer = 0;
+            buffer = nullptr;
             return;
         }
         buffer = new char[size];
@@ -80,7 +80,7 @@ MPQFile::MPQFile(const char* filename):
 
     }
     eof = true;
-    buffer = 0;
+    buffer = nullptr;
 }
 
 size_t MPQFile::read(void* dest, size_t bytes)
@@ -116,6 +116,6 @@ void MPQFile::seekRelative(int offset)
 void MPQFile::close()
 {
     delete[] buffer;
-    buffer = 0;
+    buffer = nullptr;
     eof = true;
 }

src/tools/map_extractor/wdt.cpp

@@ -35,9 +35,9 @@ bool wdt_MAIN::prepareLoadedData()
 
 WDT_file::WDT_file()
 {
-    mphd = 0;
-    main = 0;
-    wmo  = 0;
+    mphd = nullptr;
+    main = nullptr;
+    wmo  = nullptr;
 }
 
 WDT_file::~WDT_file()
@@ -47,9 +47,9 @@ WDT_file::~WDT_file()
 
 void WDT_file::free()
 {
-    mphd = 0;
-    main = 0;
-    wmo  = 0;
+    mphd = nullptr;
+    main = nullptr;
+    wmo  = nullptr;
     FileLoader::free();
 }