+ std::map<v3s16, MapBlock *>::iterator it;
+
+ assert(map != NULL);
+ assert(schemdata != NULL);
+ sanity_check(m_ndef != NULL);
+
+ //// Determine effective rotation and effective schematic dimensions
+ if (rot == ROTATE_RAND)
+ rot = (Rotation)myrand_range(ROTATE_0, ROTATE_270);
+
+ v3s16 s = (rot == ROTATE_90 || rot == ROTATE_270) ?
+ v3s16(size.Z, size.Y, size.X) : size;
+
+ //// Adjust placement position if necessary
+ if (flags & DECO_PLACE_CENTER_X)
+ p.X -= (s.X + 1) / 2;
+ if (flags & DECO_PLACE_CENTER_Y)
+ p.Y -= (s.Y + 1) / 2;
+ if (flags & DECO_PLACE_CENTER_Z)
+ p.Z -= (s.Z + 1) / 2;
+
+ //// Create VManip for effected area, emerge our area, modify area
+ //// inside VManip, then blit back.
+ v3s16 bp1 = getNodeBlockPos(p);
+ v3s16 bp2 = getNodeBlockPos(p + s - v3s16(1,1,1));
+
+ MMVManip vm(map);
+ vm.initialEmerge(bp1, bp2);
+
+ blitToVManip(&vm, p, rot, force_place);