Clean-up Minimap code

- Fixed race conditions
- Fixed null dereference
- Fixed out-of-bounds array access
- MinimapMapblock is now allocated and added to update queue only when enabled
- Removed dependency on LocalPlayer
- Fixed code style
- Simplified expressions and program logic
- Cleaned minimap object interfaces

src/game.cpp

@@ -4045,10 +4045,11 @@ void Game::updateFrame(std::vector<aabb3f> &highlight_boxes,
 	}
 
 	/*
-		Update minimap pos
+		Update minimap pos and rotation
 	*/
 	if (flags.show_minimap && flags.show_hud) {
 		mapper->setPos(floatToInt(player->getPosition(), BS));
+		mapper->setAngle(player->getYaw());
 	}
 
 	/*