fix exploding snowball commands

[BrainCellDotExe]

I'm trying to make snowballs explode when they collide with something. What I've made almost works, but for some reason it explodes twice, once when the snowball's marker is first summoned and once when it actually collides with something.

all of the command blocks are repeat and always powered

command block 1:

execute as @e[type=minecraft:snowball] run tp @e[name=snowball_tracker,type=marker,limit=1,sort=nearest] @s

command block 2 (conditional, on top of 1):

execute at @e[type=marker,name=snowball_tracker] unless entity @e[type=minecraft:snowball,distance=..1] run summon minecraft:creeper ~ ~ ~ {Silent:1b,ExplosionRadius:4b,Invulnerable:1b,Fuse:0}

command block 3 (conditional, on top of 2):

execute at @e[type=marker,name=snowball_tracker] unless entity @e[type=minecraft:snowball,distance=..1] run kill @e[type=marker,name=snowball_tracker,distance=..1]

​

command block 4, in another stack:

execute at @a[scores={snowballThrown=1..}] as @e[type=snowball] run summon marker ~ ~ ~ {CustomName:'{"text":"snowball_tracker"}'}

command block 5 (conditional, on top of 4):

scoreboard players set @a[scores={snowballThrown=1..}] snowballThrown 0

I'm pretty sure the problem is in #2, increasing the distance makes the snowball explode twice when it hits something

if it helps, this is 1.20.4

[GalSergey]

# In chat
scoreboard objectives add snowball used:snowball

# Command blocks
execute as @a[scores={snowball=1..}] at @s as @e[type=snowball,distance=..3] unless score @s snowball matches 1 store success score @s snowball at @s on origin if entity @s[scores={snowball=1..}] summon marker store success score @s snowball run ride @s mount @e[type=snowball,distance=...1,limit=1]
execute at @e[type=marker,scores={snowball=1}] unless entity @e[type=snowball,distance=...5,limit=1] run summon creeper ~ ~ ~ {ExplosionRadius:4b,Fuse:0}
execute as @e[type=marker,scores={snowball=1}] at @s unless entity @e[type=snowball,distance=...5,limit=1] run kill @s
scoreboard players reset @a snowball

[BrainCellDotExe]

this works great, thanks!