Defensive Structures In Minecraft!

Commands for Defensive Structures in Minecraft
►MAKE SURE YOU PASTE EACH COMMAND IN ORDER!◄
///This section is for Arrow Defense///
►Scoreboards
/scoreboard objectives add arrow dummy
/scoreboard objectives add a dummy
/scoreboard objectives add counter dummy
►Summon ArmorStand
/summon ArmorStand ~ ~1 ~ {CustomName:"arrow",Small:1,Invisible:1,Invulnerable:1}
►Test for Zombies near the structure
/execute @e[type=ArmorStand,name=arrow] ~ ~ ~ /execute @e[type=Zombie,r=10] ~ ~ ~ /scoreboard players set @e[type=ArmorStand,name=arrow] arrow 1
►Start timer
/scoreboard players add @e[type=ArmorStand,name=arrow] counter 1
►Summon Arrow
/execute @e[score_arrow_min=1,score_counter_min=9] ~ ~ ~ /summon Arrow ~2 ~0.5 ~ {Motion:[1.0,0.0,0.0]}
/execute @e[score_arrow_min=1,score_counter_min=9] ~ ~ ~ /summon Arrow ~-2 ~0.5 ~ {Motion:[-1.0,0.0,0.0]}
/execute @e[score_arrow_min=1,score_counter_min=9] ~ ~ ~ /summon Arrow ~ ~0.5 ~2 {Motion:[0.0,0.0,1.0]}
/execute @e[score_arrow_min=1,score_counter_min=9] ~ ~ ~ /summon Arrow ~ ~0.5 ~-2 {Motion:[0.0,0.0,-1.0]}
/execute @e[score_arrow_min=1,score_counter_min=9] ~ ~ ~ /summon Arrow ~-2 ~0.5 ~-2 {Motion:[-1.0,0.0,-1.0]}
/execute @e[score_arrow_min=1,score_counter_min=9] ~ ~ ~ /summon Arrow ~-2 ~0.5 ~2 {Motion:[-1.0,0.0,1.0]}
/execute @e[score_arrow_min=1,score_counter_min=9] ~ ~ ~ /summon Arrow ~2 ~0.5 ~-2 {Motion:[1.0,0.0,-1.0]}
/execute @e[score_arrow_min=1,score_counter_min=9] ~ ~ ~ /summon Arrow ~2 ~0.5 ~2 {Motion:[1.0,0.0,1.0]}
►Reset
/scoreboard players set @e[type=ArmorStand,name=arrow] arrow 0
/scoreboard players set @e[type=Arrow] a 1 {inGround:1b}
/kill @e[type=Arrow,score_a_min=1]
/execute @e[score_counter_min=10] ~ ~ ~ /scoreboard players set @e[type=ArmorStand,name=arrow] counter 0

///This section is for Flamethrower Defense///
►Scoreboards
/scoreboard objectives add on dummy
►Summon ArmorStand
/summon ArmorStand ~ ~1 ~ {CustomName:"fire",Small:1,Invisible:1,Invulnerable:1}
►Test for Zombies near the structure
/execute @e[type=ArmorStand,name=fire] ~ ~ ~ /execute @e[type=Zombie,r=15] ~ ~ ~ /scoreboard players set @e[type=ArmorStand,name=fire] on 1
►Summon Snowball
/execute @e[score_on_min=1] ~ ~ ~ /summon Snowball ~2 ~0.5 ~ {Motion:[1.0,0.0,0.0]}
/execute @e[score_on_min=1] ~ ~ ~ /summon Snowball ~-2 ~0.5 ~ {Motion:[-1.0,0.0,0.0]}
/execute @e[score_on_min=1] ~ ~ ~ /summon Snowball ~ ~0.5 ~2 {Motion:[0.0,0.0,1.0]}
/execute @e[score_on_min=1] ~ ~ ~ /summon Snowball ~ ~0.5 ~-2 {Motion:[0.0,0.0,-1.0]}
►Burn entites around snowballs
/execute @e[type=Snowball] ~ ~ ~ /entitydata @e[r=10,type=!Player] {Fire:100,Fuse:1,ignited:1}
►Particles
/execute @e[type=Snowball] ~ ~ ~ /particle lava ~ ~ ~ 0.5 0.5 0.5 1 0 force
►Reset
/scoreboard players set @e[type=ArmorStand,name=fire] on 0

If you need help, watch the YouTube Video:https://www.youtube.com/watch?v=52Wv7f6p3DI&feature=youtu.be