Fun Gun In One Command For 1.15

summon falling_block ~ ~.5 ~ {Motion:[.0,.5,.0],BlockState:{Name:activator_rail},Time:1,Passengers:[{id:falling_block,BlockState:{Name:redstone_block},Time:1},{id:command_block_minecart,Command:"gamerule commandBlockOutput false"},{id:command_block_minecart,Command:"fill ~2 ~-3 ~-1 ~8 ~-1 ~1 blue_terracotta hollow"},{id:command_block_minecart,Command:"fill ~2 ~-2 ~-1 ~8 ~-2 ~1 barrier replace blue_terracotta"},{id:command_block_minecart,Command:"tellraw @a [\"\",{\"text\":\"Fun Guns> \",\"color\":\"blue\",\"bold\":false},{\"text\":\"One Command For 1.15 Installed!\",\"color\":\"none\",\"bold\":false}]"},{id:command_block_minecart,Command:"tellraw @a [\"\",{\"text\":\"Fun Guns> \",\"color\":\"blue\",\"bold\":false},{\"text\":\"Created by BlueCommander!\",\"color\":\"none\",\"bold\":false}]"},{id:command_block_minecart,Command:"tellraw @a [\"\",{\"text\":\"Fun Guns> \",\"color\":\"blue\",\"bold\":false},{\"text\":\"Big Thanks To MrGarreto For The One Command Combiner!\",\"color\":\"none\",\"bold\":false}]"},{id:command_block_minecart,Command:"scoreboard objectives add Blue_FG_CON1 dummy"},{id:command_block_minecart,Command:"execute at @p run summon firework_rocket ~ ~1 ~ {LifeTime:0,FireworksItem:{id:firework_rocket,Count:1,tag:{Fireworks:{Explosions:[{Type:0,Flicker:1b,Trail:1b,Colors:[I;16711680,16777008,4587305,857599],FadeColors:[I;16777215,0]}]}}}}"},{id:command_block_minecart,Command:"setblock ~1 ~-3 ~ oak_wall_sign[facing=west]{Text1:\"{\\\"text\\\":\\\"[Destroy]\\\",\\\"color\\\":\\\"dark_red\\\",\\\"bold\\\":true}\",Text2:\"{\\\"text\\\":\\\"Right Click\\\",\\\"color\\\":\\\"white\\\",\\\"bold\\\":true}\",Text3:\"{\\\"text\\\":\\\"\\\"}\",Text4:\"{\\\"text\\\":\\\"\\\",\\\"clickEvent\\\":{\\\"action\\\":\\\"run_command\\\",\\\"value\\\":\\\"fill ~ ~ ~-1 ~7 ~2 ~1 air\\\"}}\"}"},{id:command_block_minecart,Command:"setblock ~1 ~-2 ~ oak_wall_sign[facing=west]{Text1:\"{\\\"text\\\":\\\"Fun Guns\\\",\\\"color\\\":\\\"gold\\\",\\\"bold\\\":true}\",Text2:\"{\\\"text\\\":\\\"By\\\",\\\"color\\\":\\\"white\\\",\\\"bold\\\":true}\",Text3:\"{\\\"text\\\":\\\"Blue\\\",\\\"color\\\":\\\"blue\\\",\\\"bold\\\":true}\",Text4:\"{\\\"text\\\":\\\"Commander\\\",\\\"color\\\":\\\"blue\\\",\\\"bold\\\":true}\"}"},{id:command_block_minecart,Command:"fill ~3 ~-2 ~ ~7 ~-2 ~ chain_command_block[facing=east]"},{id:command_block_minecart,Command:"setblock ~3 ~-2 ~ repeating_command_block[facing=east]"},{id:command_block_minecart,Command:"data merge block ~7 ~-2 ~ {auto:1,Command:\"kill @e[type=arrow,scores={Blue_FG_CON1=1..}]\"}"},{id:command_block_minecart,Command:"data merge block ~6 ~-2 ~ {auto:1,Command:\"execute at @e[type=arrow,scores={Blue_FG_CON1=1..}] as @a run playsound minecraft:entity.blaze.hurt voice @a\"}"},{id:command_block_minecart,Command:"data merge block ~5 ~-2 ~ {auto:1,Command:\"execute at @e[type=arrow,scores={Blue_FG_CON1=1..}] run particle lava ~ ~ ~ 0.8 0.8 0.8 0.01 15 force\"}"},{id:command_block_minecart,Command:"data merge block ~4 ~-2 ~ {auto:1,Command:\"scoreboard players set @e[type=arrow,nbt={inGround:1b}] Blue_FG_CON1 1\"}"},{id:command_block_minecart,Command:"data merge block ~3 ~-2 ~ {auto:1,Command:\"execute at @e[type=arrow] run particle smoke ~ ~ ~ 0.1 0.1 0.1 0.01 5 force\"}"},{id:command_block_minecart,Command:"setblock ~ ~ ~1 command_block{Command:\"fill ~ ~-2 ~-1 ~ ~ ~ air\"}"},{id:command_block_minecart,Command:"setblock ~ ~-1 ~1 redstone_block"},{id:command_block_minecart,Command:"kill @e[type=command_block_minecart,distance=..1]"}]}