Add cartokill datapack to kill nearby cartographers when trading. Pre…

…vents server crash.

cartokill/build.sh

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+../common/build.sh

cartokill/src/data/io.totemo.cartokill/functions/cartokill-load.mcfunction

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+# Use difference between actual no. of trades and stored trade count to detect
+# player closing the trade window. cartokill.kills is success count of kill.
+scoreboard objectives add cartokill.trade minecraft.custom:minecraft.traded_with_villager
+scoreboard objectives add cartokill.oldtr dummy
+scoreboard objectives add cartokill.kills dummy
+
+# Const objective may already be defined by coords datapack. Aint no thang.
+scoreboard objectives add const dummy
+scoreboard players set 0 const 0
+

cartokill/src/data/io.totemo.cartokill/functions/cartokill-tick.mcfunction

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+# Initialise to 0.
+scoreboard players add @a cartokill.oldtr 0
+execute as @a if score @s cartokill.trade > @s cartokill.oldtr run function io.totemo.cartokill:cartokill-trade

cartokill/src/data/io.totemo.cartokill/functions/cartokill-trade.mcfunction

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+execute at @s as @s store success score @s cartokill.kills run kill @e[type=villager,nbt={Profession:1,Career:2},distance=..7]
+execute if score @s cartokill.kills > 0 const run tellraw @s [{"color":"red","text":"To prevent a server crash, nearby cartographers have been killed. Sorry."}]
+
+# Remember the new trade count.
+execute as @s store result score @s cartokill.oldtr run scoreboard players get @s cartokill.trade
+

cartokill/src/data/minecraft/tags/functions/load.json

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+{
+    "values": [ 
+        "io.totemo.cartokill:cartokill-load"
+    ]
+}
+

cartokill/src/data/minecraft/tags/functions/tick.json

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+{
+    "values": [ 
+        "io.totemo.cartokill:cartokill-tick"
+    ]
+}
+

cartokill/src/pack.mcmeta

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+{
+    "pack": {
+        "pack_format": 1,
+        "description":"Kill nearby cartographers after trading to prevent server crash in pre6."
+    }
+}