Initial commit

LICENSE

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+MIT License
+
+Copyright (c) 2021 violine1101
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.

README.md

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+# MC-Region-Pregen
+
+A data pack for pregenerating larger regions in Minecraft
+
+## Usage
+
+1. Teleport to the lowest coordinates where the region starts
+2. Run `/function regiongen:start`
+3. Wait for the data pack to teleport you around
+4. Done!
+
+In order to stop the pregeneration prematurely, use `/function regiongen:stop`.
+
+## Configuration
+
+These configuration options are available:
+
+### Teleportation speed
+
+You can change the teleportation speed by using:
+
+```
+/scoreboard players set stepLength regiongen <timeInTicks>
+```
+
+The higher this value is, the slower the teleportation will go.
+
+The lower this value is, the more likely it is that your computer won't keep up with world generation.
+It is recommended to use lower values with low render distance (2-4 chunks).
+
+By default, the teleportation speed is 1 teleportation per second.
+
+### Region size
+
+You can change the size of the pregenerated region:
+
+```
+/scoreboard players set xRegionSize regiongen <sizeInChunks>
+/scoreboard players set zRegionSize regiongen <sizeInChunks>
+```
+
+By default, the region size is 32x32 chunks (size of a `.mca` file).
+
+## Drawbacks
+The current version of this pack only teleports one chunk at a time, meaning that it might take a long time for an entire region to be pregenerated.

data/minecraft/tags/functions/load.json

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+{
+    "values": [
+        "regiongen:load"
+    ]
+}

data/minecraft/tags/functions/tick.json

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+{
+    "values": [
+        "regiongen:tick"
+    ]
+}

data/regiongen/functions/load.mcfunction

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+scoreboard objectives add regiongen dummy
+
+scoreboard players set xRegionSize regiongen 32
+scoreboard players set zRegionSize regiongen 32
+scoreboard players set curX regiongen 0
+scoreboard players set curZ regiongen 0
+scoreboard players set stepLength regiongen 20
+scoreboard players set #nextStep regiongen 0

data/regiongen/functions/start.mcfunction

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+tag @s add regiongen
+summon armor_stand ~ ~ ~ {Tags: [regiongen_as], NoGravity: 1b, Marker: 1b}
+execute as @e[tag=regiongen_as] at @s run forceload add ~ ~

data/regiongen/functions/step.mcfunction

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+execute if score #nextStep regiongen >= stepLength regiongen run function regiongen:teleport
+scoreboard players add #nextStep regiongen 1

data/regiongen/functions/stop.mcfunction

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+tag @a remove regiongen
+scoreboard players set curX regiongen 0
+scoreboard players set curZ regiongen 0
+scoreboard players set #nextStep regiongen 0
+
+kill @e[tag=regiongen_as]
+forceload remove all

data/regiongen/functions/teleport.mcfunction

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+execute unless score curX regiongen matches 0 run function regiongen:teleport_next_row
+execute if score curX regiongen matches 0 if score curZ regiongen matches 0 run function regiongen:teleport_next_row
+execute if score curX regiongen matches 0 unless score curZ regiongen matches 0 run function regiongen:teleport_next_col
+
+execute unless score curZ regiongen < zRegionSize regiongen run function regiongen:stop
+
+scoreboard players add curX regiongen 1
+scoreboard players operation curX regiongen %= xRegionSize regiongen
+execute if score curX regiongen matches 0 run scoreboard players add curZ regiongen 1
+
+scoreboard players set #nextStep regiongen 0

data/regiongen/functions/teleport_next_col.mcfunction

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+execute as @e[tag=regiongen_as] at @s run tp @s ~ ~ ~16
+execute as @a[tag=regiongen] run tp @s @e[tag=regiongen_as,limit=1,sort=nearest]
+execute as @e[tag=regiongen_as] at @s run forceload add ~ ~

data/regiongen/functions/teleport_next_row.mcfunction

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+execute as @a[tag=regiongen] at @s run tp @s ~16 ~ ~

data/regiongen/functions/tick.mcfunction

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+execute if entity @a[tag=regiongen] run function regiongen:step

pack.mcmeta

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+{
+    "pack": {
+        "pack_format": 6,
+        "description": "A data pack for pregenerating a certain region in the world"
+    }
+}