(2014, July 11) Custom Falling Blocks

/scoreboard objectives add PlaceCobble stat.useItem.minecraft.cobblestone

/scoreboard objectives add SummonCobble dummy
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/scoreboard players add @a[score_PlaceCobble=4,score_PlaceCobble_min=1] PlaceCobble 1

/execute @a[score_PlaceCobble=2,score_PlaceCobble_min=2] ~-5 ~-5 ~-5 /fill ~ ~ ~ ~10 ~10 ~10 gravel 0 replace cobblestone

/execute @a[score_PlaceCobble_min=1] ~ ~ ~ /scoreboard players set @e[type=FallingSand,name=!Cobble] SummonCobble 1

/execute @e[score_SummonCobble_min=1] ~ ~ ~ /summon FallingSand ~ ~ ~ {Time:1,TileID:4,CustomName:Cobble}

/execute @e[score_SummonCobble_min=1] ~ ~ ~ /fill ~ ~ ~ ~ ~ ~ air 0 replace gravel

/kill @e[score_SummonCobble_min=1]

/execute @e[score_PlaceCobble_min=4] ~-6 ~-6 ~-6 /fill ~ ~ ~ ~12 ~12 ~12 cobblestone 0 replace gravel

/scoreboard players reset @a[score_PlaceCobble_min=4] PlaceCobble

/scoreboard players reset * SummonCobble

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==== BLANK COMMANDS BELOW ==============
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/scoreboard objectives add PlaceBLOCK stat.useItem.minecraft.BLOCKID#

/scoreboard objectives add SummonBLOCK dummy
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/scoreboard players add @a[score_PlaceBLOCK=4,score_PlaceBLOCK_min=1] PlaceBLOCK 1

/execute @a[score_PlaceBLOCK=2,score_PlaceBLOCK_min=2] ~-5 ~-5 ~-5 /fill ~ ~ ~ ~10 ~10 ~10 gravel 0 replace BLOCK

/execute @a[score_PlaceBLOCK_min=1] ~ ~ ~ /scoreboard players set @e[type=FallingSand,name=!BLOCK] SummonBLOCK 1

/execute @e[score_SummonBLOCK_min=1] ~ ~ ~ /summon FallingSand ~ ~ ~ {Time:1,TileID:BLOCKID#,CustomName:BLOCK}

/execute @e[score_SummonBLOCK_min=1] ~ ~ ~ /fill ~ ~ ~ ~ ~ ~ air 0 replace gravel

/kill @e[score_SummonBLOCK_min=1]

/execute @e[score_PlaceBLOCK_min=4] ~-6 ~-6 ~-6 /fill ~ ~ ~ ~12 ~12 ~12 BLOCK 0 replace gravel

/scoreboard players reset @a[score_PlaceBLOCK_min=4] PlaceBLOCK

/scoreboard players reset * SummonBLOCK