Tools/mmaps_generator: Print readme with --help

src/tools/mmaps_generator/Info/readme.txt

@@ -1,4 +1,4 @@
-Generator command line args
+R"(Generator command line args
 
 --threads           [#]             Max number of threads used by the generator
                                     Default: 3
@@ -53,6 +53,7 @@ Generator command line args
                                     this command will build the map regardless of --skip* option settings
                                     if you do not specify a map number, builds all maps that pass the filters specified by --skip* options
 
+--help                              This message
 
 examples:
 
@@ -67,3 +68,4 @@ builds all tiles of map 0
 
 movement_extractor 0 --tile 34,46
 builds only tile 34,46 of map 0 (this is the southern face of blackrock mountain)
+)"

src/tools/mmaps_generator/PathGenerator.cpp

@@ -28,6 +28,11 @@
 #include <unordered_map>
 #include <vector>
 
+constexpr char Readme[] =
+{
+#include "Info/readme.txt"
+};
+
 using namespace MMAP;
 
 namespace
@@ -241,6 +246,12 @@ bool handleArgs(int argc, char** argv,
 
             offMeshInputPath = param;
         }
+        else if (!strcmp(argv[i], "--help") || !strcmp(argv[i], "-?"))
+        {
+            printf("%s\n", Readme);
+            silent = true;
+            return false;
+        }
         else
         {
             int map = atoi(argv[i]);