org.bukkit.event.block.BlockSpreadEvent#isCancelled ( )源码实例Demo

public static void handleSpreadEvent(@Nonnull BlockSpreadEvent e) {
    if (e.isCancelled()) return;

    // Only cancel fire spreading
    if (e.getBlock().getType() == Material.FIRE) {
        cancelWorldEvent(e.getBlock().getChunk(), e, "blockFireSpread");
    }
}
 

@SuppressWarnings("deprecation")
@Override
public void a(World world, int i, int j, int k, Random random) {
	if(world.getGameRules().getBoolean("doFireTick")) {
		boolean flag = world.getType(i, j - 1, k) == Blocks.NETHERRACK;
		if(((world.worldProvider instanceof WorldProviderTheEnd)) && (world.getType(i, j - 1, k) == Blocks.BEDROCK)) {
			flag = true;
		}
		if(!canPlace(world, i, j, k)) {
			fireExtinguished(world, i, j, k);
		}
		if((!flag) && (world.Q()) && ((world.isRainingAt(i, j, k)) || (world.isRainingAt(i - 1, j, k)) || (world.isRainingAt(i + 1, j, k)) || (world.isRainingAt(i, j, k - 1)) || (world.isRainingAt(i, j, k + 1)))) {
			fireExtinguished(world, i, j, k);
		}
		else {
			int l = world.getData(i, j, k);
			if(l < 15) {
				world.setData(i, j, k, l + random.nextInt(3) / 2, 4);
			}
			world.a(i, j, k, this, a(world) + random.nextInt(10));
			if((!flag) && (!e(world, i, j, k))) {
				if((!World.a(world, i, j - 1, k)) || (l > 3)) {
					fireExtinguished(world, i, j, k);
				}
			}
			else if((!flag) && (!e(world, i, j - 1, k)) && (l == 15) && (random.nextInt(4) == 0)) {
				fireExtinguished(world, i, j, k);
			}
			else {
				boolean flag1 = world.z(i, j, k);
				byte b0 = 0;
				if(flag1) {
					b0 = -50;
				}
				a(world, i + 1, j, k, 300 + b0, random, l);
				a(world, i - 1, j, k, 300 + b0, random, l);
				a(world, i, j - 1, k, 250 + b0, random, l);
				a(world, i, j + 1, k, 250 + b0, random, l);
				a(world, i, j, k - 1, 300 + b0, random, l);
				a(world, i, j, k + 1, 300 + b0, random, l);
				for(int i1 = i - 1; i1 <= i + 1; i1++) {
					for(int j1 = k - 1; j1 <= k + 1; j1++) {
						for(int k1 = j - 1; k1 <= j + 4; k1++) {
							if((i1 != i) || (k1 != j) || (j1 != k)) {
								int l1 = 100;
								if(k1 > j + 1) {
									l1 += (k1 - (j + 1)) * 100;
								}
								int i2 = m(world, i1, k1, j1);
								if(i2 > 0) {
									int j2 = (i2 + 40 + world.difficulty.a() * 7) / (l + 30);
									if(flag1) {
										j2 /= 2;
									}
									if((j2 > 0) && (random.nextInt(l1) <= j2) && ((!world.Q()) || (!world.isRainingAt(i1, k1, j1))) && (!world.isRainingAt(i1 - 1, k1, k)) && (!world.isRainingAt(i1 + 1, k1, j1)) && (!world.isRainingAt(i1, k1, j1 - 1)) && (!world.isRainingAt(i1, k1, j1 + 1))) {
										int k2 = l + random.nextInt(5) / 4;
										if(k2 > 15) {
											k2 = 15;
										}
										if((world.getType(i1, k1, j1) != this) && (!CraftEventFactory.callBlockIgniteEvent(world, i1, k1, j1, i, j, k).isCancelled())) {
											Server server = world.getServer();
											org.bukkit.World bworld = world.getWorld();
											BlockState blockState = bworld.getBlockAt(i1, k1, j1).getState();
											blockState.setTypeId(Block.getId(this));
											blockState.setData(new MaterialData(Block.getId(this), (byte) k2));

											BlockSpreadEvent spreadEvent = new BlockSpreadEvent(blockState.getBlock(), bworld.getBlockAt(i, j, k), blockState);
											server.getPluginManager().callEvent(spreadEvent);
											if(!spreadEvent.isCancelled()) {
												blockState.update(true);
											}
										}
									}
								}
							}
						}
					}
				}
			}
		}
	}
}