SkDragon

[MeHow]

every 2 seconds:
    loop all zombies:
        loop all blocks in radius 10 of loop-zombie:
            if line 1 of loop-block is "[Building]":   
                if line 2 of loop-block is "LightTower":   
                    if line 3 of loop-block is "Level 1":                   
                        if loop-block is a sign:
                            damage loop-zombie by 0.5 heart   
                            drawLine particle redstone, center loop-block, target location of loop-zombie, id "%loop-zombie%", rainbowMode true, solid true, density 5, length 6, zigZag count 0, height 0, visibleRange 32, displacementXYZ 0, 1, 0, pulseDelay 1                           
                            stop

I am trying to do that from sign particle line target loop-zombie
Ty for help

 

[ShaneBee]

This is going to be REALLY laggy, you're looping a 21x21x21 area, which is 9261 blocks, around every zombie every 2 seconds. This is a completely unideal solution, you should just use the "on sign edit" event to detect when a player finishes editing a sign, then detect those lines then, and if it's one of the correct signs, add its location to a list, and then instead loop through the list of sign locations and find nearby zombies.