Creeper Tracker | Minecraft | 1 Command

/summon falling_block ~ ~1 ~ {Block:"redstone_block",Time:3,Passengers:[{id:"falling_block",Block:"activator_rail",Time:3,Passengers:[{id:"commandblock_minecart",Command:/gamerule commandBlockOutput false},{id:"commandblock_minecart",Command:/scoreboard objectives add PackTimer dummy},{id:"commandblock_minecart",Command:/fill ~2 ~-2 ~-1 ~5 ~5 ~1 wool 5 hollow},{id:"commandblock_minecart",Command:/fill ~2 ~-1 ~-1 ~5 ~4 ~1 stained_glass 7 replace wool},{id:"commandblock_minecart",Command:/summon falling_block ~3 ~-1 ~ {Block:repeating_command_block,Data:1,TileEntityData:{auto:1b,Command:/scoreboard players add CreeperTrack PackTimer 1},Time:1,DropItem:0,Passengers:[{id:"falling_block",Block:chain_command_block,Data:1,TileEntityData:{Command:/scoreboard players test CreeperTrack PackTimer 10},Time:1,DropItem:0,Passengers:[{id:"falling_block",Block:chain_command_block,Data:9,TileEntityData:{Command:/scoreboard players set CreeperTrack PackTimer 0},Time:1,DropItem:0,Passengers:[{id:"falling_block",Block:repeating_command_block,Data:9,TileEntityData:{auto:1b,Command:/scoreboard players tag @e[type=item] add CreeperTrackA {Item:{id:"minecraft:gunpowder",Count:16b},OnGround:1b}},Time:1,DropItem:0,Passengers:[{id:"falling_block",Block:chain_command_block,Data:1,TileEntityData:{Command:/scoreboard players tag @e[type=item] add CreeperTrackB {Item:{id:"minecraft:compass",Count:1b},OnGround:1b}},Time:1,DropItem:0,Passengers:[{id:"falling_block",Block:chain_command_block,Data:5,TileEntityData:{Command:/execute @e[tag=CreeperTrackB] ~ ~ ~ /scoreboard players tag @e[type=item,tag=CreeperTrackA,dx=0] add CreeperTrackC},Time:1,DropItem:0}]}]}]}]}]}},{id:"commandblock_minecart",Command:/summon falling_block ~4 ~-1 ~ {Block:chain_command_block,Data:5,TileEntityData:{Command:/execute @e[tag=HoldCRTR] ~ ~ ~ execute @e[type=creeper,c=1,rm=5,r=10] ~ ~ ~ execute @a[r=15,tag=HoldCRTR] ~ ~ ~ /playsound minecraft:block.note.pling ambient @p ~ ~ ~ 3 1.587402 1},Time:1,DropItem:0,Passengers:[{id:"falling_block",Block:chain_command_block,Data:0,TileEntityData:{Command:/execute @e[tag=HoldCRTR] ~ ~ ~ execute @e[type=creeper,c=1,rm=10,r=15] ~ ~ ~ execute @a[r=15,tag=HoldCRTR] ~ ~ ~ /playsound minecraft:block.note.pling ambient @p ~ ~ ~ 3 .793701 1},Time:1,DropItem:0,Passengers:[{id:"falling_block",Block:chain_command_block,Data:0,TileEntityData:{Command:/scoreboard players tag @a add HoldCRTR {Inventory:[{Slot:-106b,tag:{CRTR:1b}}]}},Time:1,DropItem:0,Passengers:[{id:"falling_block",Block:chain_command_block,Data:0,TileEntityData:{Command:/scoreboard players tag @a remove HoldCRTR},Time:1,DropItem:0,Passengers:[{id:"falling_block",Block:chain_command_block,Data:0,TileEntityData:{Command:/entitydata @e[tag=CreeperTrackC] {Tags:[],Motion:[0.0,0.31415926,0.0],Item:{id:"minecraft:compass",Count:1b,tag:{ench:[{id:-1}],CRTR:1b,display:{LocName:"Creeper Tracker",Lore:["Hold to alert you","of any nearby creepers.","(Off-Hand Only)"]}}}}},Time:1,DropItem:0,Passengers:[{id:"falling_block",Block:chain_command_block,Data:0,TileEntityData:{Command:/execute @e[tag=CreeperTrackC] ~ ~ ~ kill @e[tag=CreeperTrackB]},Time:1,DropItem:0}]}]}]}]}]}},{id:"commandblock_minecart",Command:/setblock ~5 ~-1 ~ chain_command_block 5 0 {auto:1b,Command:/execute @e[tag=HoldCRTR] ~ ~ ~ execute @e[type=creeper,c=1,rm=0,r=5] ~ ~ ~ execute @a[r=15,tag=HoldCRTR] ~ ~ ~ /playsound minecraft:block.note.pling ambient @p ~ ~ ~ 3 2. 1}},{id:"commandblock_minecart",Command:setblock ~1 ~1 ~ wall_sign 4 0 {Text1:"{\\\"text\\\":\\\"click here\\\",\\\"color\\\":\\\"dark_red\\\",\\\"clickEvent\\\":{\\\"action\\\":\\\"run_command\\\",\\\"value\\\":\\\"/particle explode ~3 ~ ~ 1 3 1 .01 75 normal\\\"}}",Text2:"{\\\"text\\\":\\\"to remove\\\",\\\"color\\\":\\\"dark_red\\\"}",Text3:"{\\\"text\\\":\\\"this machine\\\",\\\"color\\\":\\\"dark_red\\\"}",Text4:"{\\\"text\\\":\\\"\\\",\\\"clickEvent\\\":{\\\"action\\\":\\\"run_command\\\",\\\"value\\\":\\\"fill ~ ~-3 ~-1 ~4 ~4 ~1 air\\\"}}"}},{id:"commandblock_minecart",Command:/setblock ~ ~1 ~ command_block 1 0 {auto:1b,Command:fill ~ ~ ~ ~ ~-2 ~ air}},{id:"commandblock_minecart",Command:kill @e[r=2,type=commandblock_minecart]}]}]}