3rd party refactor

docs/3rdparty.md

@@ -0,0 +1,12 @@
+On Windows all 3rd party libraries are vendored in the LumixEngine repository, either as a binary, or in form of a source code. Everything should work out of the box.
+
+## Recast
+
+We utilize [Recast & Detour](https://github.com/recastnavigation/recastnavigation) for navigation purposes. The source code for Recast is included in our repository under [external/recast/src](../external/recast/src). To update Recast, you can run the provided [batch script](../scripts/download_deploy_recast.bat) which will download the latest version and copy it to the appropriate directory. Recast is included as a [unity build](https://en.wikipedia.org/wiki/Unity_build). Recast is build as a part of *navigation* plugin.
+
+## FreeType2
+
+We utilize [FreeType2](https://github.com/nem0/freetype2.git) for text rendering. On Windows, prebuilt library is included in [external/freetype/lib/win](../external/freetype/lib/win/) and is used by default. If you want to build FreeType from source code, use following steps:
+1. Run [download_freetype.bat](../scripts/download_freetype.bat) to download FreeType source code.
+2. Regenerate project using *GENie*.
+3. Build project.

external/recast/include/RecastDump.h → external/recast/src/DetourAlloc.cpp

@@ -16,28 +16,35 @@
 // 3. This notice may not be removed or altered from any source distribution.
 //
 
-#ifndef RECAST_DUMP_H
-#define RECAST_DUMP_H
+#include <stdlib.h>
+#include "DetourAlloc.h"
 
-struct duFileIO
+static void *dtAllocDefault(size_t size, dtAllocHint)
 {
-	virtual ~duFileIO() = 0;
-	virtual bool isWriting() const = 0;
-	virtual bool isReading() const = 0;
-	virtual bool write(const void* ptr, const size_t size) = 0;
-	virtual bool read(void* ptr, const size_t size) = 0;
-};
+	return malloc(size);
+}
 
-bool duDumpPolyMeshToObj(struct rcPolyMesh& pmesh, duFileIO* io);
-bool duDumpPolyMeshDetailToObj(struct rcPolyMeshDetail& dmesh, duFileIO* io);
-
-bool duDumpContourSet(struct rcContourSet& cset, duFileIO* io);
-bool duReadContourSet(struct rcContourSet& cset, duFileIO* io);
+static void dtFreeDefault(void *ptr)
+{
+	free(ptr);
+}
 
-bool duDumpCompactHeightfield(struct rcCompactHeightfield& chf, duFileIO* io);
-bool duReadCompactHeightfield(struct rcCompactHeightfield& chf, duFileIO* io);
+static dtAllocFunc* sAllocFunc = dtAllocDefault;
+static dtFreeFunc* sFreeFunc = dtFreeDefault;
 
-void duLogBuildTimes(rcContext& ctx, const int totalTileUsec);
+void dtAllocSetCustom(dtAllocFunc *allocFunc, dtFreeFunc *freeFunc)
+{
+	sAllocFunc = allocFunc ? allocFunc : dtAllocDefault;
+	sFreeFunc = freeFunc ? freeFunc : dtFreeDefault;
+}
 
+void* dtAlloc(size_t size, dtAllocHint hint)
+{
+	return sAllocFunc(size, hint);
+}
 
-#endif // RECAST_DUMP_H
+void dtFree(void* ptr)
+{
+	if (ptr)
+		sFreeFunc(ptr);
+}