<!-- 
RSS generated by JIRA (9.12.2#9120002-sha1:301bf498dd45d800842af0b84230f1bb58606c13) at Sun Jan 12 11:50:56 UTC 2025

It is possible to restrict the fields that are returned in this document by specifying the 'field' parameter in your request.
For example, to request only the issue key and summary append 'field=key&field=summary' to the URL of your request.
-->
<rss version="0.92" >
<channel>
    <title>Mojang Studios Jira</title>
    <link>https://bugs.mojang.com</link>
    <description>This file is an XML representation of an issue</description>
    <language>en</language>    <build-info>
        <version>9.12.2</version>
        <build-number>9120002</build-number>
        <build-date>10-01-2024</build-date>
    </build-info>


<item>
            <title>[MC-411] Terrain Generation Issues</title>
                <link>https://bugs.mojang.com/browse/MC-411</link>
                <project id="10400" key="MC">Minecraft: Java Edition</project>
                    <description>&lt;p&gt;I created 2 DEFAULT worlds with the seed &quot;LightChase&quot;, one in Version 1.3.2 and the other 1.4.2 Pre-release. Both versions give me the same world with a partly generated cave (See Picture 1 and 3), a river that didn&apos;t float down (See Picture 2) at where it should be, ork trees and a lake south-eastwards (See Picture 4). I tried to recreate it several times and I was given the same result.&lt;/p&gt;

&lt;p&gt;Then, I created a Large BIOMES world with the same seed in 1.4.2 Pre-release. This time, I was given a world with a similar cave yet fully generated (See Picture 6, notice the trees are gone), a Swamp biome which didn&apos;t show up in the Default world (See Picture 6, on the right), the same lake at the same position of the Default-world lake (See Picture 5). &lt;/p&gt;

&lt;p&gt;I think, and I believe, that it&apos;s a generation bug occured because of a code error.&lt;/p&gt;</description>
                <environment>System:Windows 7&lt;br/&gt;
Java:Jre 7 update 7</environment>
        <key id="11677">MC-411</key>
            <summary>Terrain Generation Issues</summary>
                <type id="1" iconUrl="https://bugs.mojang.com/secure/viewavatar?size=xsmall&amp;avatarId=18903&amp;avatarType=issuetype">Bug</type>
                                    <status id="5" iconUrl="https://bugs.mojang.com/images/icons/statuses/resolved.png" description="A resolution has been taken, and it is awaiting verification by reporter. From here issues are either reopened, or are closed.">Resolved</status>
                    <statusCategory id="3" key="done" colorName="success"/>
                                    <resolution id="7">Invalid</resolution>
                                        <assignee username="-1">Unassigned</assignee>
                                    <reporter username="seville cheng">Seville Cheng</reporter>
                        <labels>
                            <label>code</label>
                            <label>world-generation</label>
                    </labels>
                <created>Thu, 25 Oct 2012 13:15:17 +0200</created>
                <updated>Fri, 14 Aug 2020 02:53:53 +0200</updated>
                            <resolved>Tue, 26 Nov 2013 19:48:04 +0100</resolved>
                                    <version>Minecraft 1.4.1</version>
                    <version>Minecraft 1.4.2</version>
                    <version>Minecraft 1.4.7</version>
                    <version>Minecraft 1.5.2</version>
                    <version>Minecraft 1.6.1</version>
                    <version>Minecraft 1.6.2</version>
                    <version>Minecraft 13w36a</version>
                    <version>Minecraft 13w38c</version>
                                                                        <votes>0</votes>
                                    <watches>4</watches>
                                                                            <comments>
                            <comment id="121650" author="seville cheng" created="Wed, 27 Nov 2013 06:08:47 +0100"  >&lt;p&gt;@Talven81 The same bug still can be seen in 1.7.x (e.g &lt;a href=&quot;https://bugs.mojang.com/browse/MC-29466&quot; title=&quot;Cave Stop Generating Before Water Sharply&quot; class=&quot;issue-link&quot; data-issue-key=&quot;MC-29466&quot;&gt;&lt;del&gt;MC-29466&lt;/del&gt;&lt;/a&gt;)&lt;/p&gt;</comment>
                            <comment id="121385" author="talven81" created="Tue, 26 Nov 2013 19:48:04 +0100"  >&lt;p&gt;No longer valid, complete rework of terrain generation code in 1.7.x&lt;/p&gt;</comment>
                            <comment id="100424" author="bljat" created="Fri, 30 Aug 2013 19:51:29 +0200"  >&lt;p&gt;Resolving this since the upcoming update changes terrain generation quite a bit. If there are any new issues with the new terrain generation, please create a new ticket.&lt;/p&gt;</comment>
                            <comment id="89847" author="bugi74" created="Fri, 12 Jul 2013 16:49:26 +0200"  >&lt;p&gt;Can reproduce in 1.6.2. (Note, the seed, &quot;LightChase&quot;, is in the description...)&lt;/p&gt;

&lt;p&gt;Note, this issue is more about a somewhat extreme and visually bad effect of an intended coding feature. See my comment earlier and the &apos;disabled_water_stop_feature&apos; screenshot what happens when the feature is disabled. However, the current operation obviously creates quite disturbing shapes. Mojang needs to decide whether they consider this small enough a problem to leave as &quot;won&apos;t fix&quot;, or if they want to try to make a better tunnel &quot;shaping&quot; algorithm. Note also that most likely, this same &quot;feature&quot; is the reason why e.g. large ravines can be cut vertically sharply when a river passes through it, etc.&lt;/p&gt;</comment>
                            <comment id="89837" author="seville cheng" created="Fri, 12 Jul 2013 16:32:19 +0200"  >&lt;p&gt;@Ezekiel As I just bought a new computer, you might have to wait for some days so that I could see whether I can reproduce it. Thank you for remembering this issue.&lt;/p&gt;</comment>
                            <comment id="89820" author="ezekielelin" created="Fri, 12 Jul 2013 16:01:09 +0200"  >&lt;p&gt;Cannot reproduce in the latest version of minecraft&lt;/p&gt;

&lt;p&gt;Can you provide a seed?&lt;/p&gt;</comment>
                            <comment id="36557" author="kumasasa" created="Sun, 13 Jan 2013 20:19:50 +0100"  >&lt;p&gt;Ok, reopened this ticket.&lt;br/&gt;
Leaving the links as &quot;related to&quot;&lt;/p&gt;</comment>
                            <comment id="36521" author="bugi74" created="Sun, 13 Jan 2013 17:43:19 +0100"  >&lt;p&gt;Added a screenshot for the case when the stop at water -feature is disabled for tunnel generation.&lt;/p&gt;</comment>
                            <comment id="36520" author="bugi74" created="Sun, 13 Jan 2013 17:40:57 +0100"  >&lt;p&gt;I managed to create that same world and gave a bit of surgical knife to the cave generator code...&lt;/p&gt;

&lt;p&gt;I first applied the two fixes, but that didn&apos;t help, so this issue is NOT related to either &lt;a href=&quot;https://bugs.mojang.com/browse/MC-7200&quot; title=&quot;Cave/tunnel generation may cut tunnels a bit too soon (fix included)&quot; class=&quot;issue-link&quot; data-issue-key=&quot;MC-7200&quot;&gt;&lt;del&gt;MC-7200&lt;/del&gt;&lt;/a&gt; or &lt;a href=&quot;https://bugs.mojang.com/browse/MC-6820&quot; title=&quot;The generation of terrain surface layer produces local straight glitches (fix included)&quot; class=&quot;issue-link&quot; data-issue-key=&quot;MC-6820&quot;&gt;&lt;del&gt;MC-6820&lt;/del&gt;&lt;/a&gt;.&lt;/p&gt;

&lt;p&gt;I then suspected another piece of code and made a specific change to prevent that code working in the relevant coordinates (allowing that tunnel to continue no matter what that suspected code was deciding). And this time the tunnel did continue, like shown in the other screenshot. Thus that suspected piece of code is the reason...&lt;/p&gt;

&lt;p&gt;... But the disabled piece of code is an intended feature, though implemented in a bit crude way. Namely, there is specific check in the cave generator code for NOT tunneling into water; it stops the tunnel just before it. It is not perfect, as it makes a sharp cut instead of trying to do some fancy natural shaping (difficult!).&lt;/p&gt;

&lt;p&gt;So, this particular case is &quot;intended feature&quot;. Changes to it should probably be a feature request along the lines of &quot;more natural caves/tunnels near waters&quot;.&lt;/p&gt;</comment>
                            <comment id="36510" author="kumasasa" created="Sun, 13 Jan 2013 17:08:02 +0100"  >&lt;p&gt;Ok, relinked to &lt;a href=&quot;https://bugs.mojang.com/browse/MC-7200&quot; title=&quot;Cave/tunnel generation may cut tunnels a bit too soon (fix included)&quot; class=&quot;issue-link&quot; data-issue-key=&quot;MC-7200&quot;&gt;&lt;del&gt;MC-7200&lt;/del&gt;&lt;/a&gt; but left &lt;a href=&quot;https://bugs.mojang.com/browse/MC-6820&quot; title=&quot;The generation of terrain surface layer produces local straight glitches (fix included)&quot; class=&quot;issue-link&quot; data-issue-key=&quot;MC-6820&quot;&gt;&lt;del&gt;MC-6820&lt;/del&gt;&lt;/a&gt; as a potential relation.&lt;/p&gt;</comment>
                            <comment id="36496" author="seville cheng" created="Sun, 13 Jan 2013 16:44:09 +0100"  >&lt;p&gt;@Markku Yes it&apos;s mixed up. And I agree mine is more related to &lt;a href=&quot;https://bugs.mojang.com/browse/MC-7200&quot; title=&quot;Cave/tunnel generation may cut tunnels a bit too soon (fix included)&quot; class=&quot;issue-link&quot; data-issue-key=&quot;MC-7200&quot;&gt;&lt;del&gt;MC-7200&lt;/del&gt;&lt;/a&gt; than &lt;a href=&quot;https://bugs.mojang.com/browse/MC-6820&quot; title=&quot;The generation of terrain surface layer produces local straight glitches (fix included)&quot; class=&quot;issue-link&quot; data-issue-key=&quot;MC-6820&quot;&gt;&lt;del&gt;MC-6820&lt;/del&gt;&lt;/a&gt;.&lt;/p&gt;</comment>
                            <comment id="36495" author="bugi74" created="Sun, 13 Jan 2013 16:40:37 +0100"  >&lt;p&gt;The screenshot numbers seem to be mixed up (due to way how JIRA switches order when uploading more or something).&lt;/p&gt;

&lt;p&gt;Actually, most screenshots depict a different issue than the &lt;a href=&quot;https://bugs.mojang.com/browse/MC-6820&quot; title=&quot;The generation of terrain surface layer produces local straight glitches (fix included)&quot; class=&quot;issue-link&quot; data-issue-key=&quot;MC-6820&quot;&gt;&lt;del&gt;MC-6820&lt;/del&gt;&lt;/a&gt;. I think this issue could be the same or at least related to issue &lt;a href=&quot;https://bugs.mojang.com/browse/MC-7200&quot; title=&quot;Cave/tunnel generation may cut tunnels a bit too soon (fix included)&quot; class=&quot;issue-link&quot; data-issue-key=&quot;MC-7200&quot;&gt;&lt;del&gt;MC-7200&lt;/del&gt;&lt;/a&gt; (also reported by me and has a fix).&lt;/p&gt;

&lt;p&gt;Would be nice to get seeds and locations if anyone spots similar straight cut surface caves/tunnels. I could easily check the bug then.&lt;/p&gt;</comment>
                            <comment id="36483" author="kumasasa" created="Sun, 13 Jan 2013 16:30:20 +0100"  >&lt;p&gt;Resolved as duplicate of &lt;a href=&quot;https://bugs.mojang.com/browse/MC-6820&quot; title=&quot;The generation of terrain surface layer produces local straight glitches (fix included)&quot; class=&quot;issue-link&quot; data-issue-key=&quot;MC-6820&quot;&gt;&lt;del&gt;MC-6820&lt;/del&gt;&lt;/a&gt; , there are the reasons for this behaviour.&lt;/p&gt;</comment>
                            <comment id="30249" author="jelly opera" created="Sun, 23 Dec 2012 11:33:13 +0100"  >&lt;p&gt;This generation bug has happened on all of four worlds I&apos;ve generated in 1.4.6 with random (inputless) seeds. Doesn&apos;t seem normal to me at all. I have screenshots of one of the worlds.&lt;/p&gt;</comment>
                            <comment id="14904" author="steelcrow" created="Mon, 29 Oct 2012 04:04:28 +0100"  >&lt;p&gt;Looks normal. Not a bug. Caused by a minor change in how the seed is used.  As the 1.4.2 generation will consistently produce the same terrain with the same seed, it&apos;s definatly not a bug. &lt;/p&gt;</comment>
                            <comment id="13114" author="ezekielelin" created="Thu, 25 Oct 2012 13:23:10 +0200"  >&lt;p&gt;Sorry, this has always happened to some extent over most updates.&lt;/p&gt;</comment>
                            <comment id="13109" author="craftthatblock" created="Thu, 25 Oct 2012 13:17:11 +0200"  >&lt;p&gt;Im pretty sure this is not a bug. At lease a very minor bug.&lt;/p&gt;</comment>
                    </comments>
                <issuelinks>
                            <issuelinktype id="10102">
                    <name>Duplicate</name>
                                                                <inwardlinks description="is duplicated by">
                                        <issuelink>
            <issuekey id="50558">MC-29466</issuekey>
        </issuelink>
                            </inwardlinks>
                                    </issuelinktype>
                            <issuelinktype id="10103">
                    <name>Relates</name>
                                            <outwardlinks description="relates to">
                                        <issuelink>
            <issuekey id="19592">MC-6820</issuekey>
        </issuelink>
            <issuelink>
            <issuekey id="19979">MC-7200</issuekey>
        </issuelink>
                            </outwardlinks>
                                                        </issuelinktype>
                    </issuelinks>
                <attachments>
                            <attachment id="10846" name="2012-10-25_19.04.56.png" size="871834" author="seville cheng" created="Thu, 25 Oct 2012 13:15:18 +0200"/>
                            <attachment id="10845" name="2012-10-25_19.05.06.png" size="941997" author="seville cheng" created="Thu, 25 Oct 2012 13:15:18 +0200"/>
                            <attachment id="10847" name="2012-10-25_19.05.32.png" size="692408" author="seville cheng" created="Thu, 25 Oct 2012 13:15:18 +0200"/>
                            <attachment id="10849" name="2012-10-25_19.07.00.png" size="1288406" author="seville cheng" created="Thu, 25 Oct 2012 13:15:18 +0200"/>
                            <attachment id="10848" name="2012-10-25_19.07.27.png" size="995758" author="seville cheng" created="Thu, 25 Oct 2012 13:15:18 +0200"/>
                            <attachment id="10844" name="2012-10-25_19.10.46.png" size="625352" author="seville cheng" created="Thu, 25 Oct 2012 13:15:18 +0200"/>
                            <attachment id="18640" name="disabled_water_stop_feature.png" size="967131" author="bugi74" created="Sun, 13 Jan 2013 17:43:19 +0100"/>
                    </attachments>
                <subtasks>
                    </subtasks>
                <customfields>
                                                                                                                                                                <customfield id="customfield_10701" key="com.atlassian.jira.plugin.system.customfieldtypes:datetime">
                        <customfieldname>CHK</customfieldname>
                        <customfieldvalues>
                            <customfieldvalue>Wed, 16 Jan 2013 22:21:00 +0100</customfieldvalue>
                        </customfieldvalues>
                    </customfield>
                                                                                            <customfield id="customfield_10500" key="com.atlassian.jira.plugin.system.customfieldtypes:radiobuttons">
                        <customfieldname>Confirmation Status</customfieldname>
                        <customfieldvalues>
                                <customfieldvalue key="10301"><![CDATA[Plausible]]></customfieldvalue>

                        </customfieldvalues>
                    </customfield>
                                                                                                                        <customfield id="customfield_11700" key="com.atlassian.jira.plugins.jira-development-integration-plugin:devsummary">
                        <customfieldname>Development</customfieldname>
                        <customfieldvalues>
                            
                        </customfieldvalues>
                    </customfield>
                                                                                                                                                                                <customfield id="customfield_11100" key="com.atlassian.jira.plugin.system.customfieldtypes:float">
                        <customfieldname>Linked</customfieldname>
                        <customfieldvalues>
                            <customfieldvalue>2.0</customfieldvalue>
                        </customfieldvalues>
                    </customfield>
                                                                                                                                                                                                                                                                                                <customfield id="customfield_11600" key="com.pyxis.greenhopper.jira:gh-lexo-rank">
                        <customfieldname>Rank</customfieldname>
                        <customfieldvalues>
                            <customfieldvalue>0|i0m2fb:</customfieldvalue>

                        </customfieldvalues>
                    </customfield>
                                                                                                                                                                                                                                                                                                                                                                                    </customfields>
    </item>
</channel>
</rss>