1.14/1.13 Tnt Cannon Command



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 ~ ~5 ~2 ~9 stone"},
{id:command_block_minecart,Command:"fill ~3 ~6 ~9 ~5 ~2 ~ stone"},
{id:command_block_minecart,Command:"fill ~4 ~3 ~ ~4 ~5 ~8 air"},
{id:command_block_minecart,Command:"fill ~3 ~3 ~1 ~3 ~3 ~7 minecraft:dispenser[facing=east]{Items:[{slot:0,id:tnt,Count:64}]}"},
{id:command_block_minecart,Command:"fill ~2 ~3 ~2 ~2 ~3 ~7 repeater[facing=west]"},
{id:command_block_minecart,Command:"fill ~1 ~3 ~2 ~ ~3 ~7 redstone_wire"},
{id:command_block_minecart,Command:"fill ~ ~3 ~6 ~ ~3 ~1 repeater[facing=south,delay=4]"},
{id:command_block_minecart,Command:"setblock ~3 ~4 ~ dispenser[facing=east]{Items:[{slot:0,id:tnt,Count:64}]}"},
{id:command_block_minecart,Command:"fill ~2 ~3 ~ ~ ~3 ~ stone"},
{id:command_block_minecart,Command:"fill ~2 ~4 ~ ~ ~4 ~ redstone_wire"},
{id:command_block_minecart,Command:"setblock ~4 ~3 ~8 water"},
{id:command_block_minecart,Command:"setblock ~4 ~3 ~ ladder[facing=east]"},
{id:command_block_minecart,Command:"setblock ~1 ~3 ~8 oak_button[face=floor]"},
{id:command_block_minecart,Command:"summon falling_block ~ ~2 ~ {BlockState:{Name:command_block},Time:1}"},{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]"}]}