Fluid Elements

[andrewgrider]

You can't walk through fluid elements, you just stand on them, and they expand till they cover the map or till they hit another block

[p3rlphr33k]

I have made adjustments to this recently when I started working on this again. I realize this is an old issue but i thought I would share.

I have added a stepping system into fluids to track increments and prevent flooding. You can adjust the maxStep variable to how many steps/size increases you want to allow water to spread.

in physics.js replace fluids section with this:

	// Fluids
	if ( step % 5 == 0 )
	{
		// Newly spawned fluid blocks are stored so that those aren't
		// updated in the same step, creating a simulation avalanche.
		var newFluidBlocks = {};
		var maxStep = 5;
		for ( var x = 0; x < world.sx; x++ ) {
			for ( var y = 0; y < world.sy; y++ ) {
				for ( var z = 0; z < world.sz; z++ ) {
					var material = blocks[x][y][z];
	
					if ( material.fluid && newFluidBlocks[x+","+y+","+z] == null && material.step < maxStep)
					{
						console.log('spread step: '+material.step);
						if ( x > 0 && blocks[x-1][y][z] == BLOCK.AIR ) {
							world.setBlock( x - 1, y, z, material );
							newFluidBlocks[(x-1)+","+y+","+z] = true;
						}
						if ( x < world.sx - 1 && blocks[x+1][y][z] == BLOCK.AIR ) {
							world.setBlock( x + 1, y, z, material );
							newFluidBlocks[(x+1)+","+y+","+z] = true;
						}
						if ( y > 0 && blocks[x][y-1][z] == BLOCK.AIR ) {
							world.setBlock( x, y - 1, z, material );
							newFluidBlocks[x+","+(y-1)+","+z] = true;
						}
						if ( y < world.sy - 1 && blocks[x][y+1][z] == BLOCK.AIR ) {
							world.setBlock( x, y + 1, z, material );
							newFluidBlocks[x+","+(y+1)+","+z] = true;
						}

						material.step++;
					}
				}
			}
		} 
	}

In block.js update BLOCK.WATER, BLOCK.LAVA, or any other liquids you might have so they have a step option:

// Water
BLOCK.WATER = {
	id: 19,
	strike: 1,
	spawnable: true,
	breakable: false,
	transparent: true,
	selflit: false,
	gravity: true,
	fluid: true,
	step: 1,
	fire: false,
	texture: function( world, lightmap, lit, x, y, z, dir ) {
              return [ 13/16, 12/16, 14/16, 13/16 ];
        },
	
	icon: "water.png"
};