Hola a todos! Hoy he tenido una idea bastante chula utilizando el filtro executedetect de CrushedPixel. Se trata de una estructura que, al construirla, nos permitirá transformar bloques de madera en bloques de carbón. Es importante que al crear la estructura cuando miremos a la puerta estemos orientados hacia las Z negativas, si no, no detectará nuestra estructura. En realidad estaría bien replicar la construcción en todas las direcciones posibles para que pueda construirse sin problemas (en total tendriamos 4 comandos de detección y 4 setblock). Os paso el comando y las fotos de la estructura para que veais como se contruye (NO PONGAIS EL CARTEL). ADEMÁS HAY QUE DEJAR LA CHIMENEA LIBRE!

Las imagenes son las siguientes: http://imgur.com/a/0GgbO Con ellas os podeis hacer una idea de como es la estructura que debeis hacer. Ademas, hay que colocar justo donde se indica un bloque de stone brick del tipo que se indica (LOS DEMÁS SON ROTOS NORMALES). Para la chimenea hay que utilizar escaleras de cobblestone y arriba a los lados hay que colocar un par de vallas metalicas. Para que funcione debe estar completamente lleno de madera, ponemos lava donde está puesta y tapamos con bricks rotos normales.

Si no funciona puede ser porque:
-No estas colocado justo delante de la puerta.
-Hay bloques encima de la estructura.
-Hay bloques en las esquinas exteriores de la estructura.
-Has puesto mal los bloques.
-No has construido la estructura de tal forma que te quedes mirando hacia las Z negativas cuando tapes la puerta.
-No has llenado completamente la estructura con madera (en total son 18 bloques de madera).
-No has tapado la estructura tras poner la lava.
-Soy idiota y algo ha ido mal ;DDDDD (en realidad lo he testeado)
Comando largo:
/execute @a ~ ~ ~ detect ~-2 ~0 ~-5 minecraft:air 0 /execute @p ~ ~ ~ detect ~-2 ~0 ~-4 minecraft:air 0 /execute @p ~ ~ ~ detect ~-2 ~0 ~-3 minecraft:monster_egg 2 /execute @p ~ ~ ~ detect ~-2 ~0 ~-2 minecraft:monster_egg 2 /execute @p ~ ~ ~ detect ~-2 ~0 ~-1 minecraft:air 0 /execute @p ~ ~ ~ detect ~-2 ~0 ~0 minecraft:air 0 /execute @p ~ ~ ~ detect ~-2 ~1 ~-5 minecraft:air 0 /execute @p ~ ~ ~ detect ~-2 ~1 ~-4 minecraft:air 0 /execute @p ~ ~ ~ detect ~-2 ~1 ~-3 minecraft:monster_egg 2 /execute @p ~ ~ ~ detect ~-2 ~1 ~-2 minecraft:monster_egg 2 /execute @p ~ ~ ~ detect ~-2 ~1 ~-1 minecraft:air 0 /execute @p ~ ~ ~ detect ~-2 ~1 ~0 minecraft:air 0 /execute @p ~ ~ ~ detect ~-2 ~2 ~-5 minecraft:air 0 /execute @p ~ ~ ~ detect ~-2 ~2 ~-4 minecraft:air 0 /execute @p ~ ~ ~ detect ~-2 ~2 ~-3 minecraft:monster_egg 2 /execute @p ~ ~ ~ detect ~-2 ~2 ~-2 minecraft:monster_egg 2 /execute @p ~ ~ ~ detect ~-2 ~2 ~-1 minecraft:air 0 /execute @p ~ ~ ~ detect ~-2 ~2 ~0 minecraft:air 0 /execute @p ~ ~ ~ detect ~-2 ~3 ~-5 minecraft:air 0 /execute @p ~ ~ ~ detect ~-2 ~3 ~-4 minecraft:air 0 /execute @p ~ ~ ~ detect ~-2 ~3 ~-3 minecraft:air 0 /execute @p ~ ~ ~ detect ~-2 ~3 ~-2 minecraft:air 0 /execute @p ~ ~ ~ detect ~-2 ~3 ~-1 minecraft:air 0 /execute @p ~ ~ ~ detect ~-2 ~3 ~0 minecraft:air 0 /execute @p ~ ~ ~ detect ~-2 ~4 ~-5 minecraft:air 0 /execute @p ~ ~ ~ detect ~-2 ~4 ~-4 minecraft:air 0 /execute @p ~ ~ ~ detect ~-2 ~4 ~-3 minecraft:air 0 /execute @p ~ ~ ~ detect ~-2 ~4 ~-2 minecraft:air 0 /execute @p ~ ~ ~ detect ~-2 ~4 ~-1 minecraft:air 0 /execute @p ~ ~ ~ detect ~-2 ~4 ~0 minecraft:air 0 /execute @p ~ ~ ~ detect ~-2 ~5 ~-5 minecraft:air 0 /execute @p ~ ~ ~ detect ~-2 ~5 ~-4 minecraft:air 0 /execute @p ~ ~ ~ detect ~-2 ~5 ~-3 minecraft:air 0 /execute @p ~ ~ ~ detect ~-2 ~5 ~-2 minecraft:air 0 /execute @p ~ ~ ~ detect ~-2 ~5 ~-1 minecraft:air 0 /execute @p ~ ~ ~ detect ~-2 ~5 ~0 minecraft:air 0 /execute @p ~ ~ ~ detect ~-1 ~0 ~-5 minecraft:air 0 /execute @p ~ ~ ~ detect ~-1 ~0 ~-4 minecraft:monster_egg 2 /execute @p ~ ~ ~ detect ~-1 ~0 ~-3 minecraft:log 0 /execute @p ~ ~ ~ detect ~-1 ~0 ~-2 minecraft:log 0 /execute @p ~ ~ ~ detect ~-1 ~0 ~-1 minecraft:monster_egg 2 /execute @p ~ ~ ~ detect ~-1 ~0 ~0 minecraft:air 0 /execute @p ~ ~ ~ detect ~-1 ~1 ~-5 minecraft:air 0 /execute @p ~ ~ ~ detect ~-1 ~1 ~-4 minecraft:monster_egg 2 /execute @p ~ ~ ~ detect ~-1 ~1 ~-3 minecraft:log 0 /execute @p ~ ~ ~ detect ~-1 ~1 ~-2 minecraft:log 0 /execute @p ~ ~ ~ detect ~-1 ~1 ~-1 minecraft:monster_egg 2 /execute @p ~ ~ ~ detect ~-1 ~1 ~0 minecraft:air 0 /execute @p ~ ~ ~ detect ~-1 ~2 ~-5 minecraft:air 0 /execute @p ~ ~ ~ detect ~-1 ~2 ~-4 minecraft:monster_egg 2 /execute @p ~ ~ ~ detect ~-1 ~2 ~-3 minecraft:log 0 /execute @p ~ ~ ~ detect ~-1 ~2 ~-2 minecraft:log 0 /execute @p ~ ~ ~ detect ~-1 ~2 ~-1 minecraft:monster_egg 2 /execute @p ~ ~ ~ detect ~-1 ~2 ~0 minecraft:air 0 /execute @p ~ ~ ~ detect ~-1 ~3 ~-5 minecraft:air 0 /execute @p ~ ~ ~ detect ~-1 ~3 ~-4 minecraft:air 0 /execute @p ~ ~ ~ detect ~-1 ~3 ~-3 minecraft:stonebrick 2 /execute @p ~ ~ ~ detect ~-1 ~3 ~-2 minecraft:stonebrick 2 /execute @p ~ ~ ~ detect ~-1 ~3 ~-1 minecraft:iron_bars 0 /execute @p ~ ~ ~ detect ~-1 ~3 ~0 minecraft:air 0 /execute @p ~ ~ ~ detect ~-1 ~4 ~-5 minecraft:air 0 /execute @p ~ ~ ~ detect ~-1 ~4 ~-4 minecraft:air 0 /execute @p ~ ~ ~ detect ~-1 ~4 ~-3 minecraft:air 0 /execute @p ~ ~ ~ detect ~-1 ~4 ~-2 minecraft:stone_stairs 0 /execute @p ~ ~ ~ detect ~-1 ~4 ~-1 minecraft:air 0 /execute @p ~ ~ ~ detect ~-1 ~4 ~0 minecraft:air 0 /execute @p ~ ~ ~ detect ~-1 ~5 ~-5 minecraft:air 0 /execute @p ~ ~ ~ detect ~-1 ~5 ~-4 minecraft:air 0 /execute @p ~ ~ ~ detect ~-1 ~5 ~-3 minecraft:air 0 /execute @p ~ ~ ~ detect ~-1 ~5 ~-2 minecraft:air 0 /execute @p ~ ~ ~ detect ~-1 ~5 ~-1 minecraft:air 0 /execute @p ~ ~ ~ detect ~-1 ~5 ~0 minecraft:air 0 /execute @p ~ ~ ~ detect ~0 ~0 ~-5 minecraft:monster_egg 2 /execute @p ~ ~ ~ detect ~0 ~0 ~-4 minecraft:log 0 /execute @p ~ ~ ~ detect ~0 ~0 ~-3 minecraft:log 0 /execute @p ~ ~ ~ detect ~0 ~0 ~-2 minecraft:lava 0 /execute @p ~ ~ ~ detect ~0 ~0 ~-1 minecraft:stonebrick 2 /execute @p ~ ~ ~ detect ~0 ~1 ~-5 minecraft:monster_egg 2 /execute @p ~ ~ ~ detect ~0 ~1 ~-4 minecraft:log 0 /execute @p ~ ~ ~ detect ~0 ~1 ~-3 minecraft:log 0 /execute @p ~ ~ ~ detect ~0 ~1 ~-2 minecraft:air 0 /execute @p ~ ~ ~ detect ~0 ~1 ~-1 minecraft:stonebrick 2 /execute @p ~ ~ ~ detect ~0 ~1 ~0 minecraft:air 0 /execute @p ~ ~ ~ detect ~0 ~2 ~-5 minecraft:monster_egg 2 /execute @p ~ ~ ~ detect ~0 ~2 ~-4 minecraft:log 0 /execute @p ~ ~ ~ detect ~0 ~2 ~-3 minecraft:log 0 /execute @p ~ ~ ~ detect ~0 ~2 ~-2 minecraft:air 0 /execute @p ~ ~ ~ detect ~0 ~2 ~-1 minecraft:monster_egg 2 /execute @p ~ ~ ~ detect ~0 ~2 ~0 minecraft:air 0 /execute @p ~ ~ ~ detect ~0 ~3 ~-5 minecraft:air 0 /execute @p ~ ~ ~ detect ~0 ~3 ~-4 minecraft:stonebrick 2 /execute @p ~ ~ ~ detect ~0 ~3 ~-3 minecraft:monster_egg 4 /execute @p ~ ~ ~ detect ~0 ~3 ~-2 minecraft:air 0 /execute @p ~ ~ ~ detect ~0 ~3 ~-1 minecraft:stonebrick 2 /execute @p ~ ~ ~ detect ~0 ~3 ~0 minecraft:air 0 /execute @p ~ ~ ~ detect ~0 ~4 ~-5 minecraft:air 0 /execute @p ~ ~ ~ detect ~0 ~4 ~-4 minecraft:air 0 /execute @p ~ ~ ~ detect ~0 ~4 ~-3 minecraft:stone_stairs 2 /execute @p ~ ~ ~ detect ~0 ~4 ~-2 minecraft:air 0 /execute @p ~ ~ ~ detect ~0 ~4 ~-1 minecraft:stone_stairs 3 /execute @p ~ ~ ~ detect ~0 ~4 ~0 minecraft:air 0 /execute @p ~ ~ ~ detect ~0 ~5 ~-5 minecraft:air 0 /execute @p ~ ~ ~ detect ~0 ~5 ~-4 minecraft:air 0 /execute @p ~ ~ ~ detect ~0 ~5 ~-3 minecraft:air 0 /execute @p ~ ~ ~ detect ~0 ~5 ~-2 minecraft:air 0 /execute @p ~ ~ ~ detect ~0 ~5 ~-1 minecraft:air 0 /execute @p ~ ~ ~ detect ~0 ~5 ~0 minecraft:air 0 /execute @p ~ ~ ~ detect ~1 ~0 ~-5 minecraft:air 0 /execute @p ~ ~ ~ detect ~1 ~0 ~-4 minecraft:monster_egg 2 /execute @p ~ ~ ~ detect ~1 ~0 ~-3 minecraft:log 0 /execute @p ~ ~ ~ detect ~1 ~0 ~-2 minecraft:log 0 /execute @p ~ ~ ~ detect ~1 ~0 ~-1 minecraft:monster_egg 2 /execute @p ~ ~ ~ detect ~1 ~0 ~0 minecraft:air 0 /execute @p ~ ~ ~ detect ~1 ~1 ~-5 minecraft:air 0 /execute @p ~ ~ ~ detect ~1 ~1 ~-4 minecraft:monster_egg 2 /execute @p ~ ~ ~ detect ~1 ~1 ~-3 minecraft:log 0 /execute @p ~ ~ ~ detect ~1 ~1 ~-2 minecraft:log 0 /execute @p ~ ~ ~ detect ~1 ~1 ~-1 minecraft:monster_egg 2 /execute @p ~ ~ ~ detect ~1 ~1 ~0 minecraft:air 0 /execute @p ~ ~ ~ detect ~1 ~2 ~-5 minecraft:air 0 /execute @p ~ ~ ~ detect ~1 ~2 ~-4 minecraft:monster_egg 2 /execute @p ~ ~ ~ detect ~1 ~2 ~-3 minecraft:log 0 /execute @p ~ ~ ~ detect ~1 ~2 ~-2 minecraft:log 0 /execute @p ~ ~ ~ detect ~1 ~2 ~-1 minecraft:monster_egg 2 /execute @p ~ ~ ~ detect ~1 ~2 ~0 minecraft:air 0 /execute @p ~ ~ ~ detect ~1 ~3 ~-5 minecraft:air 0 /execute @p ~ ~ ~ detect ~1 ~3 ~-4 minecraft:air 0 /execute @p ~ ~ ~ detect ~1 ~3 ~-3 minecraft:stonebrick 2 /execute @p ~ ~ ~ detect ~1 ~3 ~-2 minecraft:stonebrick 2 /execute @p ~ ~ ~ detect ~1 ~3 ~-1 minecraft:iron_bars 0 /execute @p ~ ~ ~ detect ~1 ~3 ~0 minecraft:air 0 /execute @p ~ ~ ~ detect ~1 ~4 ~-5 minecraft:air 0 /execute @p ~ ~ ~ detect ~1 ~4 ~-4 minecraft:air 0 /execute @p ~ ~ ~ detect ~1 ~4 ~-3 minecraft:air 0 /execute @p ~ ~ ~ detect ~1 ~4 ~-2 minecraft:stone_stairs 1 /execute @p ~ ~ ~ detect ~1 ~4 ~-1 minecraft:air 0 /execute @p ~ ~ ~ detect ~1 ~4 ~0 minecraft:air 0 /execute @p ~ ~ ~ detect ~1 ~5 ~-5 minecraft:air 0 /execute @p ~ ~ ~ detect ~1 ~5 ~-4 minecraft:air 0 /execute @p ~ ~ ~ detect ~1 ~5 ~-3 minecraft:air 0 /execute @p ~ ~ ~ detect ~1 ~5 ~-2 minecraft:air 0 /execute @p ~ ~ ~ detect ~1 ~5 ~-1 minecraft:air 0 /execute @p ~ ~ ~ detect ~1 ~5 ~0 minecraft:air 0 /execute @p ~ ~ ~ detect ~2 ~0 ~-5 minecraft:air 0 /execute @p ~ ~ ~ detect ~2 ~0 ~-4 minecraft:air 0 /execute @p ~ ~ ~ detect ~2 ~0 ~-3 minecraft:monster_egg 2 /execute @p ~ ~ ~ detect ~2 ~0 ~-2 minecraft:monster_egg 2 /execute @p ~ ~ ~ detect ~2 ~0 ~-1 minecraft:air 0 /execute @p ~ ~ ~ detect ~2 ~0 ~0 minecraft:air 0 /execute @p ~ ~ ~ detect ~2 ~1 ~-5 minecraft:air 0 /execute @p ~ ~ ~ detect ~2 ~1 ~-4 minecraft:air 0 /execute @p ~ ~ ~ detect ~2 ~1 ~-3 minecraft:monster_egg 2 /execute @p ~ ~ ~ detect ~2 ~1 ~-2 minecraft:monster_egg 2 /execute @p ~ ~ ~ detect ~2 ~1 ~-1 minecraft:air 0 /execute @p ~ ~ ~ detect ~2 ~1 ~0 minecraft:air 0 /execute @p ~ ~ ~ detect ~2 ~2 ~-5 minecraft:air 0 /execute @p ~ ~ ~ detect ~2 ~2 ~-4 minecraft:air 0 /execute @p ~ ~ ~ detect ~2 ~2 ~-3 minecraft:monster_egg 2 /execute @p ~ ~ ~ detect ~2 ~2 ~-2 minecraft:monster_egg 2 /execute @p ~ ~ ~ detect ~2 ~2 ~-1 minecraft:air 0 /execute @p ~ ~ ~ detect ~2 ~2 ~0 minecraft:air 0 /execute @p ~ ~ ~ detect ~2 ~3 ~-5 minecraft:air 0 /execute @p ~ ~ ~ detect ~2 ~3 ~-4 minecraft:air 0 /execute @p ~ ~ ~ detect ~2 ~3 ~-3 minecraft:air 0 /execute @p ~ ~ ~ detect ~2 ~3 ~-2 minecraft:air 0 /execute @p ~ ~ ~ detect ~2 ~3 ~-1 minecraft:air 0 /execute @p ~ ~ ~ detect ~2 ~3 ~0 minecraft:air 0 /execute @p ~ ~ ~ detect ~2 ~4 ~-5 minecraft:air 0 /execute @p ~ ~ ~ detect ~2 ~4 ~-4 minecraft:air 0 /execute @p ~ ~ ~ detect ~2 ~4 ~-3 minecraft:air 0 /execute @p ~ ~ ~ detect ~2 ~4 ~-2 minecraft:air 0 /execute @p ~ ~ ~ detect ~2 ~4 ~-1 minecraft:air 0 /execute @p ~ ~ ~ detect ~2 ~4 ~0 minecraft:air 0 /execute @p ~ ~ ~ detect ~2 ~5 ~-5 minecraft:air 0 /execute @p ~ ~ ~ detect ~2 ~5 ~-4 minecraft:air 0 /execute @p ~ ~ ~ detect ~2 ~5 ~-3 minecraft:air 0 /execute @p ~ ~ ~ detect ~2 ~5 ~-2 minecraft:air 0 /execute @p ~ ~ ~ detect ~2 ~5 ~-1 minecraft:air 0 /execute @p ~ ~ ~ detect ~2 ~5 ~0 minecraft:air 0 /fill ~1 ~ ~-2 ~-1 ~3 ~-4 coal_block 0 replace log 0
Comando SETBLOCK:
/execute @e[type=Player] ~ ~ ~ /setblock ~ ~ ~-2 stone 5
El video para que veais que funciona. Podeis saltar directamente a la parte donde me pongo a construir la estructura:
<a href="http://www.youtube.com/watch?v=mk27gfV4jRk" target="_blank">http://www.youtube.com/watch?v=mk27gfV4jRk</a>

Linkback: https://minecraftmin.net/index.php?topic=10718.0

Muy productivo otro buen tutorial tuyo a la vista XD
bueno te deseo lo mejor.
Un saludo