Minecraft slopes! (version 1.13) Command

Command not datapack.

Command:
summon falling_block ~ ~1 ~ {BlockState:{Name:stone},Time:1,Passengers:[{id:falling_block,BlockState:{Name:redstone_block},Time:1,Passengers:[{id:falling_block,BlockState:{Name:activator_rail},Time:1,Passengers:[{id:command_block_minecart,Command:"gamerule commandBlockOutput false"},{id:command_block_minecart,Command:"fill ~2 ~-3 ~-2 ~8 ~ ~2 smooth_quartz hollow"},{id:command_block_minecart,Command:"fill ~2 ~-2 ~-2 ~8 ~-1 ~2 black_stained_glass replace smooth_quartz"},{id:command_block_minecart,Command:"setblock ~1 ~-2 ~ wall_sign[facing=west]{Text1:\"{\\\"text\\\":\\\"To get items\\\",\\\"clickEvent\\\":{\\\"action\\\":\\\"run_command\\\",\\\"value\\\":\\\"give @p zombie_spawn_egg\\\"}}\",Text2:\"{\\\"text\\\":\\\"rename:\\\",\\\"color\\\":\\\"aqua\\\",\\\"clickEvent\\\":{\\\"action\\\":\\\"run_command\\\",\\\"value\\\":\\\"give @p zombie_villager_spawn_egg\\\"},\\\"bold\\\":true}\",Text3:\"{\\\"text\\\":\\\"Zombie to Slope\\\"}\",Text4:\"{\\\"text\\\":\\\"Zombvil to Delete\\\"}\"}"},{id:command_block_minecart,Command:"setblock ~1 ~-1 ~ wall_sign[facing=west]{Text1:\"{\\\"text\\\":\\\"\\\",\\\"clickEvent\\\":{\\\"action\\\":\\\"run_command\\\",\\\"value\\\":\\\"kill @e[name=slope]\\\"}}\",Text2:\"{\\\"text\\\":\\\"DESTROY\\\",\\\"color\\\":\\\"dark_red\\\"}\",Text3:\"{\\\"text\\\":\\\"\\\"}\",Text4:\"{\\\"text\\\":\\\"\\\",\\\"clickEvent\\\":{\\\"action\\\":\\\"run_command\\\",\\\"value\\\":\\\"fill ~ ~-2 ~-2 ~7 ~1 ~2 air\\\"}}\"}"},{id:command_block_minecart,Command:"fill ~3 ~-2 ~-1 ~7 ~-1 ~1 chain_command_block[facing=east]"},{id:command_block_minecart,Command:"fill ~7 ~-1 ~1 ~6 ~-1 ~1 chain_command_block[facing=west]"},{id:command_block_minecart,Command:"setblock ~7 ~-2 ~1 chain_command_block[facing=up]"},{id:command_block_minecart,Command:"setblock ~3 ~-2 ~ chain_command_block[facing=south]"},{id:command_block_minecart,Command:"fill ~7 ~-2 ~ ~4 ~-2 ~ chain_command_block[facing=west]"},{id:command_block_minecart,Command:"setblock ~7 ~-2 ~-1 chain_command_block[facing=south]"},{id:command_block_minecart,Command:"setblock ~3 ~-2 ~-1 repeating_command_block[facing=east]"},{id:command_block_minecart,Command:"data merge block ~6 ~-1 ~1 {auto:1,Command:\"/kill @e[name=Delete]\"}"},{id:command_block_minecart,Command:"data merge block ~7 ~-1 ~1 {auto:1,Command:\"kill @e[name=Slope]\"}"},{id:command_block_minecart,Command:"data merge block ~7 ~-2 ~1 {auto:1,Command:\"execute at @e[name=slope] run summon minecraft:falling_block ~ ~-0.9 ~0.4 {BlockState:{Name:\\\"minecraft:smooth_quartz\\\"}}\"}"},{id:command_block_minecart,Command:"data merge block ~6 ~-2 ~1 {auto:1,Command:\"execute at @e[name=slope] run summon minecraft:falling_block ~ ~-0.7 ~0.2 {BlockState:{Name:\\\"minecraft:smooth_quartz\\\"}}\"}"},{id:command_block_minecart,Command:"data merge block ~5 ~-2 ~1 {auto:1,Command:\"execute at @e[name=slope] run summon minecraft:falling_block ~ ~-0.4 ~-0.1 {BlockState:{Name:\\\"minecraft:smooth_quartz\\\"}}\"}"},{id:command_block_minecart,Command:"data merge block ~4 ~-2 ~1 {auto:1,Command:\"execute at @e[name=slope] run summon minecraft:falling_block ~ ~-0.3 ~-0.2 {BlockState:{Name:\\\"minecraft:smooth_quartz\\\"}}\"}"},{id:command_block_minecart,Command:"data merge block ~3 ~-2 ~1 {auto:1,Command:\"execute at @e[name=slope] run summon minecraft:falling_block ~ ~-0.8 ~0.3 {BlockState:{Name:\\\"minecraft:smooth_quartz\\\"}}\"}"},{id:command_block_minecart,Command:"data merge block ~3 ~-2 ~ {auto:1,Command:\"execute at @e[name=slope] run summon minecraft:falling_block ~ ~-0.6 ~0.1 {BlockState:{Name:\\\"minecraft:smooth_quartz\\\"}}\"}"},{id:command_block_minecart,Command:"data merge block ~4 ~-2 ~ {auto:1,Command:\"execute at @e[name=slope] run summon minecraft:falling_block ~ ~-0.5 ~ {BlockState:{Name:\\\"minecraft:smooth_quartz\\\"}}\"}"},{id:command_block_minecart,Command:"data merge block ~5 ~-2 ~ {auto:1,Command:\"execute at @e[name=slope] run summon minecraft:falling_block ~ ~-0.2 ~-0.3 {BlockState:{Name:\\\"minecraft:smooth_quartz\\\"}}\"}"},{id:command_block_minecart,Command:"data merge block ~6 ~-2 ~ {auto:1,Command:\"execute at @e[name=slope] run summon minecraft:falling_block ~ ~-0.1 ~-0.4 {BlockState:{Name:\\\"minecraft:smooth_quartz\\\"}}\"}"},{id:command_block_minecart,Command:"data merge block ~7 ~-2 ~ {auto:1,Command:\"gamerule doMobLoot false\"}"},{id:command_block_minecart,Command:"data merge block ~7 ~-2 ~-1 {auto:1,Command:\"execute at @e[name=Delete] run kill @e[type=slime,sort=nearest,limit=1]\"}"},{id:command_block_minecart,Command:"data merge block ~6 ~-2 ~-1 {auto:1,Command:\"execute at @e[name=Delete] if block ~ ~-1 ~ minecraft:quartz_stairs run setblock ~ ~-1 ~ air\"}"},{id:command_block_minecart,Command:"data merge block ~5 ~-2 ~-1 {auto:1,Command:\"execute at @e[name=Slope] run summon minecraft:slime ~ ~ ~ {CustomName:\\\"\\\\\\\"slope\\\\\\\"\\\",NoAI:1}\"}"},{id:command_block_minecart,Command:"data merge block ~4 ~-2 ~-1 {auto:1,Command:\"effect give @e[name=slope] minecraft:invisibility 1 1 true\"}"},{id:command_block_minecart,Command:"data merge block ~3 ~-2 ~-1 {auto:1,Command:\"execute at @e[name=slope] run setblock ~ ~ ~ minecraft:quartz_stairs\"}"},{id:command_block_minecart,Command:"setblock ~ ~ ~1 command_block{Command:\"fill ~ ~-3 ~-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]"}]}]}]}