- Cleanup of the voxel code.

* moving polymost_voxdraw into polymost.cpp.
* consolidated all remaining voxel code in hw_voxels.cpp. All original Build voxel code is completely gone now, except for polymost_voxdraw, so this got moved out of the build/ folder.
* integrate Blood's voxel init code into the main function.
* some further cleanup was allowed as a result of this, so engineInit is gone now because these parts can now be done outside the games' app_init functions.

source/build/src/mdsprite.cpp

@@ -16,6 +16,7 @@
 #include "texturemanager.h"
 #include "hw_renderstate.h"
 #include "printf.h"
+#include "hw_voxels.h"
 #include "../../glbackend/glbackend.h"
 
 static int32_t curextra=MAXTILES;
@@ -23,6 +24,7 @@ static int32_t curextra=MAXTILES;
 #define MIN_CACHETIME_PRINT 10
 
 using namespace Polymost;
+int32_t polymost_voxdraw(voxmodel_t* m, tspriteptr_t const tspr, bool rotate);
 
 static int32_t addtileP(int32_t model,int32_t tile,int32_t pallet)
 {
@@ -1538,6 +1540,11 @@ int32_t polymost_mddraw(tspriteptr_t tspr)
     return 0;
 }
 
+void voxfree(voxmodel_t* m)
+{
+    if (m) delete m;
+}
+
 static void mdfree(mdmodel_t *vm)
 {
     if (vm->mdnum == 1) { voxfree((voxmodel_t *)vm); return; }