Minecraft Command: The Complete Strategy Guide – Trick #39: “Using Score Variables as a Selector Condition Filter!”

“Using Score Variables as a Selector Condition Filter!”

How to Set Up the Command Blocks

Command entered in the Command Block:

Command Block A

Block Type: Impulse / Redstone: Needs Redstone
/scoreboard objectives add rewind dummy

➡️When you press the button placed in front of the Command Block, a scoreboard named “rewind” is created. This “rewind” score variable is used to record the number of armor stands spawned and is used for the rewind process.

Command Block B1

 Block Type:Repeat / Redstone: Always Active
/execute as @p[tag=!history_recording] at @s run kill @e[type=ender_pearl]
➡️ This is the trigger that executes Command Blocks B2 and B3, deleting the Ender Pearl only when the player is NOT in “history_recording” mode.

Command Block B2

Block Type:Chain / Conditional / Redstone: Always Active
/tag @p[tag=!history_recording] add history_recording
➡️ This means the “history_recording” tag is added only when Command Block B1 succeeded, i.e., when an Ender Pearl was deleted while the player was NOT in “history_recording” mode.

Command Block B3

Block Type:Chain / Conditional / Redstone: Always Active
/tag @p remove rewinding
➡️ This means the “rewinding” tag is removed only when Command Block B1 succeeded, i.e., when an Ender Pearl was deleted while the player was NOT in “history_recording” mode, ending the rewinding process.

Command Block C1

Block Type: Repeat / Redstone: Always Active

(Tick Delay: 10 = 0.5 seconds)
/execute as @p[tag=history_recording] at @s run summon armor_stand ~~3~

➡️ This prepares the armor stands to record the position history.

Command Block C2

Block Type:Chain / Conditional / Redstone: Always Active
/scoreboard players add @e[type=armor_stand] rewind 1
➡️ This means that when Command Block C1 succeeds and an armor stand for position history is summoned, the history number of that armor stand increases by 1.

Command Block D1

Block Type: Repeat / Redstone: Always Active

/execute as @e[type=armor_stand] at @s run tp ~~~

➡️ This prevents the armor stands used for position history from falling even if they are summoned in the air.

Command Block D2

Block Type:Chain / Unconditional / Redstone: Always Active
/effect @e[type=armor_stand] invisibility 1 1 true
➡️ This makes the armor stands invisible.

Command Block E1

Block Type: Repeat / Redstone: Always Active

/execute as @p[tag=history_recording] at @s run kill @e[type=ender_pearl]

➡️ This is the trigger that executes Command Blocks E2 and E3, deleting the Ender Pearl only when the player IS in “history_recording” mode.

Command Block E2

Block Type:Chain / Conditional / Redstone: Always Active
/tag @p remove history_recording
➡️This means that when Command Block E1 succeeds, i.e., when an Ender Pearl was deleted while the player was in “history_recording” mode, the history recording process ends.

Command Block E3

Block Type:Chain / Conditional / Redstone: Always Active
/tag @p add rewinding
➡️ This means that when Command Block E1 succeeds, i.e., when an Ender Pearl was deleted while the player was in “history_recording” mode, this is the trigger to start the rewinding process.

Command Block F1

Block Type: Repeat / Redstone: Always Active

(Tick Delay: 2 = 0.1 seconds)
/execute as @p[tag=rewinding] at @s run tp @s @e[type=armor_stand,scores={rewind=1}]

➡️ This moves the player to the starting point of the rewind (the latest recorded position).

Command Block F2

Block Type:Chain / Conditional / Redstone: Always Active
/execute as @p[tag=rewinding] at @s run tp ~~-2~
➡️ This means that when Command Block F1 succeeds, i.e., when the rewinding player is teleported to the armor stand with rewind=1, this corrects the player’s position because the armor stand was placed 3 blocks above the player, and the teleport happens to the armor stand’s feet (which is 3 blocks above the original player position).

Command Block F3

Block Type:Chain / Conditional / Redstone: Always Active
/scoreboard players add @e[type=armor_stand] rewind -1
➡️ This means that when Command Block F1 succeeds, i.e., when the rewinding player is teleported to the armor stand with rewind=1, the history number is moved back by 1 (e.g., the position with rewind=2 is now the target for the next tick, as it becomes rewind=1).

Command Block F4

Block Type:Chain / Conditional / Redstone: Always Active
/kill @e[type=armor_stand, scores={rewind=0}]
➡️ This shows that the rewind process is finished and removes the unnecessary armor stands.