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This page documents ''[[Minecraft:Java Edition]]''&#8203;'s several historical [[Minecraft:Leaves|leaf]] decay algorithms.<br />
<br />
== Indev ==<br />
Leaves will ''not'' decay if:<br />
* They are within a 5×5×2 box around a log with the log in the bottom center. (Note that the leaf does not have to touch the log)<br />
* They are on top of a solid block.<br />
* They are on top of a leaf that is unable to decay due to the reasons above.<br />
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If these conditions are not met, the leaf decays.<br />
<br />
== Infdev and early Alpha ==<br />
From [[Minecraft:Java Edition Infdev 20100227-1414|Infdev 20100227-1414]] to [[Minecraft:Java Edition Infdev 20100321|Infdev 20100321]], leaves did not decay. Leaf decay was implemented again from [[Minecraft:Java Edition Infdev 20100325-1545|Infdev 20100325-1545]] to [[Minecraft:Java Edition Infdev 20100330-1611|Infdev 20100330-1611]]. Leaves stopped decaying again in [[Minecraft:Infdev 20100413]], due to the addition of large trees. This was reimplemented again in [[Minecraft:Infdev 20100615]]. It stayed this way until [[Minecraft:Alpha v1.0.6]].<br />
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== Alpha ==<br />
<br />
In Alpha v1.0.6, leaves did not decay. This was changed the following version, [[Minecraft:Alpha v1.0.6_01]]. In [[Minecraft:Java Edition Alpha|Alpha]], leaves decayed using an algorithm that checks whether it has a [[Minecraft:legacy solid|solid]] block underneath it or is adjacent to but not below a wood block. If it doesn't, it must be connected to a leaf block that is also supported as long as it is no further than five blocks away from said support.<br />
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<gallery caption="Alpha-style decay" perrow="5"><br />
Basic leaf support.png|The extent a single "branch" of leaves can survive.<br />
Leaf supports leaves.png<br />
Tree supports leaves beside.png<br />
Leaves connected distance.png<br />
Leaf support compound.png|Leaves can be connected an infinite distance away from a support [[Minecraft:block]].<br />
</gallery><br />
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In [[Minecraft:Alpha v1.2.0]], leaves stopped decaying, then began decaying again in [[Minecraft:Alpha v1.2.3]]. However, due to a bug that caused an infinite loop in the code, leaf decaying was removed in the next version, [[Minecraft:Alpha v1.2.3_01]].<br />
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== Beta ==<br />
In [[Minecraft:Java Edition Beta 1.0]], leaves started decaying again. The code for decaying leaves was rewritten in [[Minecraft:Beta 1.1]]. From [[Minecraft:Beta 1.2]] to [[Minecraft:Beta 1.5]], birch and spruce leaves dropped [[Minecraft:oak saplings]], instead of their respective saplings. Since the [[Minecraft:Beta 1.8 Pre-release]], leaf blocks placed by players or [[Minecraft:endermen]] no longer started decaying.<br />
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== Release ==<br />
The leaf decay mechanics have not changed substantially since 1.0. In [[Minecraft:Java Edition 1.13]], leaves were changed to only start decaying 6 blocks away from any log or wood block. Prior to this change, the distance is 4 blocks. This shorter distance is also still used {{In|Bedrock}}.<br />
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== See also ==<br />
* {{BlockLink|Leaves}}<br />
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[[Category:History|Leaf decay]]</div>SyncBot