[Minecraft][Command Blocks][1.8] Auto set scoreboard

gistfile1.txt

# CommandBlock order : West, East, Down, Up, North, South

# Only call once
/scoreboard objectives add Spawn dummy
/scoreboard objectives add SpawnSave dummy

# Around a fast clock (20t/s)
# /fill ~ ~-1 ~ ~ ~-1 ~-1 redstone_block
# /fill ~ ~1 ~ ~ ~1 ~-1 stone

/execute @a[score_Spawn_min=1] ~ ~ ~ scoreboard players operation @p[score_Spawn_min=1,r=0] SpawnSave = @p[score_Spawn_min=1,r=0] Spawn
/scoreboard players set @a Spawn 0
/execute @a[score_SpawnSave_min=1] ~ ~ ~ scoreboard players operation @p[score_SpawnSave_min=1,r=0] Spawn = @p[score_SpawnSave_min=1,r=0] SpawnSave
/scoreboard players reset @a[score_SpawnSave_min=1] SpawnSave

# do whatever you want with @a[score_Spawn=0] without affecting those with score_Spawn > 0