Tools/mmaps_generator: Print readme with --help

(cherry picked from commit 7d9880252c)

src/tools/mmaps_generator/Info/readme.txt

@@ -1,7 +1,7 @@
-Generator command line args
+R"(Generator command line args
 
 --threads           [#]             Max number of threads used by the generator
-                                    Default: 3
+                                    Default: Same as CPU cores
 
 --offMeshInput      [file.*]        Path to file containing off mesh connections data.
                                     Format must be: (see offmesh_example.txt)
@@ -18,7 +18,7 @@ Generator command line args
 
 --maxAngle          [#]             Max walkable inclination angle
 
-                                    float between 45 and 90 degrees (default 60)
+                                    float between 45 and 90 degrees (default 55)
 
 --skipLiquid        [true|false]    extract liquid data for maps
 
@@ -53,16 +53,19 @@ 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:
 
-movement_extractor
+mmaps_generator
 builds maps using the default settings (see above for defaults)
 
-movement_extractor --skipContinents true
+mmaps_generator --skipContinents true
 builds the default maps, except continents
 
-movement_extractor 0
+mmaps_generator 0
 builds all tiles of map 0
 
-movement_extractor 0 --tile 34,46
+mmaps_generator 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

@@ -25,6 +25,11 @@
 #include <boost/filesystem.hpp>
 #include <unordered_map>
 
+constexpr char Readme[] =
+{
+#include "Info/readme.txt"
+};
+
 using namespace MMAP;
 
 namespace
@@ -254,6 +259,12 @@ bool handleArgs(int argc, char** argv,
         {
             allowDebug = true;
         }
+        else if (!strcmp(argv[i], "--help") || !strcmp(argv[i], "-?"))
+        {
+            printf("%s\n", Readme);
+            silent = true;
+            return false;
+        }
         else
         {
             int map = atoi(argv[i]);