# View Chunks

<span style="color: rgb(149, 165, 166);">View Chunks or Cached Chunks (but officially called view chunks) are chunks that have most but not all functionality disabled within them. These chunks are not simulated and cannot process things like block updates and pending ticks. These chunks do process some events however and knowing what does and does not work will help you be able to interact with these chunks in much more confidence.</span>

## <span style="color: rgb(230, 126, 35);">Where do they come from</span>

<span style="color: rgb(149, 165, 166);">They come from only these sources:</span>

- <span style="color: rgb(45, 194, 107);">End Gateway Pairing</span>
- <span style="color: rgb(241, 196, 15);"> Player Render Distance</span>
- <span style="color: rgb(241, 196, 15);">Spawn Chunks</span>
- <span style="color: rgb(186, 55, 42);">Maps</span>
- <span style="color: rgb(45, 194, 107);">Various Commands</span>
    - <span style="color: rgb(8, 103, 31);">/teleport</span>
    - <span style="color: rgb(8, 103, 31);">/execute detect</span>
    - <span style="color: rgb(8, 103, 31);">/structure</span>
    - <span style="color: rgb(8, 103, 31);">/spreadplayers</span>
    - <span style="color: rgb(8, 103, 31);">/setblock</span>
    - <span style="color: rgb(8, 103, 31);">/fillblocks</span>
    - <span style="color: rgb(8, 103, 31);">/clone</span>
    - <span style="color: rgb(8, 103, 31);">/testforblock</span>
    - <span style="color: rgb(8, 103, 31);">/testforblocks</span>
- <span style="color: rgb(45, 194, 107);">Lighting Updates.</span>
- <span style="color: rgb(45, 194, 107);">Ticking Areas</span>

<p class="callout info"><span style="color: rgb(45, 194, 107);">Green</span> means the view region is deconstructed after use. <span style="color: rgb(241, 196, 15);">Yellow</span> means the area is deconstructed after the owner disconnects. <span style="color: rgb(186, 55, 42);">Red</span> means the area is never deconstructed until the world restarts.</p>

## <span style="color: rgb(230, 126, 35);">What Works In Them</span>

<span style="color: rgb(149, 165, 166);">The things we know to work in unloaded chunks:</span>

- <span style="color: rgb(149, 165, 166);">Redstone circuit structure</span>
- <span style="color: rgb(149, 165, 166);">Capacitors (E.g, Redstone Torches, Repeaters, Comparators) </span>
- <span style="color: rgb(149, 165, 166);">Redstone Dust</span>
- <span style="color: rgb(149, 165, 166);">Global Entities (Player Owned Projectiles, Ender Dragon, fireworks, lightning)</span>
- <span style="color: rgb(149, 165, 166);">Block state changes from a wind charge</span>
- <span style="color: rgb(149, 165, 166);">Sculk Spread</span>
- <span style="color: rgb(149, 165, 166);">Block Creation</span>
- <span style="color: rgb(149, 165, 166);">Tripwire</span>
- <span style="color: rgb(149, 165, 166);">Target Block</span>
- <span style="color: rgb(149, 165, 166);">Pressure Plate</span>
- <span style="color: rgb(149, 165, 166);">Damaging/Killing Entities (Non-Global Entities will not be fully dead/deleted until simulated)</span>
- <span style="color: rgb(149, 165, 166);">Artificial Entity Spawning</span>
- <span style="color: rgb(149, 165, 166);">Breeze Projectile Redirection</span>
- <span style="color: rgb(149, 165, 166);">Pending Tick Scheduling (Not execution)</span>
- <span style="color: rgb(149, 165, 166);">Wind Charging effect.</span>
- <span style="color: rgb(149, 165, 166);">Weaving Effect</span>

<p class="callout info"><span style="color: rgb(149, 165, 166);">Although Observers are a "Pulse Capacitor" they cannot fire in unloaded chunks due to their reliance on pending ticks.</span></p>

<p class="callout warning">Since tridents are player-owned projectiles, they can fall through the world if they spawn in an unloaded chunk before the chunk’s block collision map is initialized especially when the world is running slowly. Grindstones are used to combat this.</p>

## <span style="color: rgb(230, 126, 35);">How it works under the hood</span>

<span style="color: rgb(149, 165, 166);">This functionality is a product of </span>