[1.7.2] Custom fluid characteristics

Hello,

I am new to Minecraft modding and started working on a cement mod for 1.7.2.

Goal: A placeable liquid that dries into stone (maybe with an intermediate block) within seconds.

I followed the tutorial at http://www.minecraftforge.net/wiki/Create_a_Fluid resulting in:

- new liquid cement

- cement bucket can place and pickup source block

Now, I cannot figure out how to let it dry.

If I use an ExecuterService with a scheduled delay, bugs occur since world changes are not taken into account if I call

world.setBlock(x, y, z, Blocks.stone);

I noticed that there is always just one instance of the fluid block, and the displaced blocks are the same with increased metadata.

I wanted to use onBlockAdded(final World world, final int x, final int y, final int z) to call a

world.scheduleBlockUpdate(x, y, z, this, tickRate);

but the scheduledBlockUpdate does not call updateTick (only by onNeighborBlockChange or something).

In addition, how should I replace the flowing fluid by stone if they are one and the same object? If I replace the original source block; the adjacent blocks disappear.

I tried a tick update loop with timestamp comparison but since they are the same block, they get turned to stone simultaneously.

        public final static int DELAY_DRY_MS = 3000; // 3sec
...	
@Override
public void onBlockAdded(final World world, final int x, final int y,
		final int z) {
	super.onBlockAdded(world, x, y, z);
	dryingStartTime = System.currentTimeMillis();
       }
       @Override
public void updateTick(World world, int x, int y, int z, Random rand) {
	if (System.currentTimeMillis() - dryingStartTime >= DELAY_DRY_MS) {
		world.setBlock(x, y, z, Blocks.stone);
		return;
	} else {
		super.updateTick(world, x, y, z, rand);
		world.scheduleBlockUpdate(x, y, z, this, tickRate);
	}
       }