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    <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-6311] Minecarts don&apos;t bounce off redstone blocks when on powered rail</title>
                <link>https://bugs.mojang.com/browse/MC-6311</link>
                <project id="10400" key="MC">Minecraft: Java Edition</project>
                    <description>&lt;h3&gt;&lt;a name=&quot;TheBug&quot;&gt;&lt;/a&gt;The Bug&lt;/h3&gt;
&lt;p&gt;The minecart rides down a powered rail and stops at the redstone block instead bouncing off and getting sent in the other direction. Also applies to minecarts that are standing still on the powered rail.&lt;/p&gt;

&lt;h3&gt;&lt;a name=&quot;Howtoreproduce&quot;&gt;&lt;/a&gt;How to reproduce&lt;/h3&gt;
&lt;ol&gt;
	&lt;li&gt;Place a line of three rails&lt;/li&gt;
	&lt;li&gt;Place a powered rail on both ends&lt;/li&gt;
	&lt;li&gt;Place a redstone block behind one end (right side in screenshot)&lt;/li&gt;
	&lt;li&gt;On the other end (left side in screenshot), place a redstone block on the side and a different solid block on the end&lt;/li&gt;
	&lt;li&gt;Now place a minecart on the left powered rail&lt;br/&gt;
  &#8594;&lt;img class=&quot;emoticon&quot; src=&quot;https://bugs.mojang.com/images/icons/emoticons/check.png&quot; height=&quot;16&quot; width=&quot;16&quot; align=&quot;absmiddle&quot; alt=&quot;&quot; border=&quot;0&quot;/&gt; Notice the minecart starts to ride to the other side&lt;br/&gt;
  &#8594;&lt;img class=&quot;emoticon&quot; src=&quot;https://bugs.mojang.com/images/icons/emoticons/error.png&quot; height=&quot;16&quot; width=&quot;16&quot; align=&quot;absmiddle&quot; alt=&quot;&quot; border=&quot;0&quot;/&gt; also notice that it stops against the redstone block&lt;/li&gt;
	&lt;li&gt;Remove the cart and place another on the right powered rail&lt;br/&gt;
  &#8594;&lt;img class=&quot;emoticon&quot; src=&quot;https://bugs.mojang.com/images/icons/emoticons/error.png&quot; height=&quot;16&quot; width=&quot;16&quot; align=&quot;absmiddle&quot; alt=&quot;&quot; border=&quot;0&quot;/&gt; Notice the minecart stands still&lt;/li&gt;
&lt;/ol&gt;


&lt;p&gt; &lt;span class=&quot;image-wrap&quot; style=&quot;&quot;&gt;&lt;a id=&quot;386274_thumb&quot; href=&quot;https://bugs.mojang.com/secure/attachment/386274/386274_minecart+redstone+block+no-bounce.png&quot; title=&quot;minecart redstone block no-bounce.png&quot; file-preview-type=&quot;image&quot; file-preview-id=&quot;386274&quot; file-preview-title=&quot;minecart redstone block no-bounce.png&quot;&gt;&lt;img src=&quot;https://bugs.mojang.com/secure/thumbnail/386274/_thumb_386274.png&quot; style=&quot;border: 0px solid black&quot; role=&quot;presentation&quot;/&gt;&lt;/a&gt;&lt;/span&gt;  &lt;span class=&quot;image-wrap&quot; style=&quot;&quot;&gt;&lt;a id=&quot;386273_thumb&quot; href=&quot;https://bugs.mojang.com/secure/attachment/386273/386273_minecart+redstone+block+bounce.png&quot; title=&quot;minecart redstone block bounce.png&quot; file-preview-type=&quot;image&quot; file-preview-id=&quot;386273&quot; file-preview-title=&quot;minecart redstone block bounce.png&quot;&gt;&lt;img src=&quot;https://bugs.mojang.com/secure/thumbnail/386273/_thumb_386273.png&quot; style=&quot;border: 0px solid black&quot; role=&quot;presentation&quot;/&gt;&lt;/a&gt;&lt;/span&gt; &lt;/p&gt;</description>
                <environment></environment>
        <key id="18980">MC-6311</key>
            <summary>Minecarts don&apos;t bounce off redstone blocks when on powered rail</summary>
                <type id="1" iconUrl="https://bugs.mojang.com/secure/viewavatar?size=xsmall&amp;avatarId=18903&amp;avatarType=issuetype">Bug</type>
                                    <status id="4" iconUrl="https://bugs.mojang.com/images/icons/statuses/reopened.png" description="This issue was once resolved, but the resolution was deemed incorrect. From here issues are either marked assigned or resolved.">Reopened</status>
                    <statusCategory id="2" key="new" colorName="default"/>
                                    <resolution id="-1">Unresolved</resolution>
                                        <assignee username="-1">Unassigned</assignee>
                                    <reporter username="syberiyxx">Aaron Herbst</reporter>
                        <labels>
                            <label>minecart</label>
                            <label>powered_rail</label>
                            <label>redstone_block</label>
                    </labels>
                <created>Sat, 5 Jan 2013 23:13:35 +0100</created>
                <updated>Fri, 23 Aug 2024 21:32:55 +0200</updated>
                                            <version>Snapshot 13w01b</version>
                    <version>1.16.4</version>
                    <version>20w49a</version>
                    <version>20w51a</version>
                    <version>1.16.5</version>
                    <version>21w05b</version>
                    <version>21w06a</version>
                    <version>21w07a</version>
                    <version>21w11a</version>
                    <version>21w13a</version>
                    <version>21w14a</version>
                    <version>21w15a</version>
                    <version>21w16a</version>
                    <version>21w17a</version>
                    <version>21w18a</version>
                    <version>21w19a</version>
                    <version>21w20a</version>
                    <version>1.17 Release Candidate 2</version>
                    <version>1.17</version>
                    <version>1.17.1</version>
                    <version>21w40a</version>
                    <version>1.18.1</version>
                    <version>1.18.2</version>
                    <version>22w19a</version>
                    <version>1.19.2</version>
                    <version>1.21</version>
                    <version>24w34a</version>
                                                                        <votes>16</votes>
                                    <watches>13</watches>
                                                                            <comments>
                            <comment id="1205465" author="awesoman3000" created="Mon, 17 Oct 2022 00:52:27 +0200"  >&lt;p&gt;Can confirm in 1.19.2:&lt;br/&gt;
 &lt;span class=&quot;image-wrap&quot; style=&quot;&quot;&gt;&lt;a id=&quot;510298_thumb&quot; href=&quot;https://bugs.mojang.com/secure/attachment/510298/510298_2022-10-16_23.49.17.png&quot; title=&quot;2022-10-16_23.49.17.png&quot; file-preview-type=&quot;image&quot; file-preview-id=&quot;510298&quot; file-preview-title=&quot;2022-10-16_23.49.17.png&quot;&gt;&lt;img src=&quot;https://bugs.mojang.com/secure/thumbnail/510298/_thumb_510298.png&quot; style=&quot;border: 0px solid black&quot; role=&quot;presentation&quot;/&gt;&lt;/a&gt;&lt;/span&gt;  &lt;span class=&quot;image-wrap&quot; style=&quot;&quot;&gt;&lt;a id=&quot;510299_thumb&quot; href=&quot;https://bugs.mojang.com/secure/attachment/510299/510299_2022-10-16_23.49.32.png&quot; title=&quot;2022-10-16_23.49.32.png&quot; file-preview-type=&quot;image&quot; file-preview-id=&quot;510299&quot; file-preview-title=&quot;2022-10-16_23.49.32.png&quot;&gt;&lt;img src=&quot;https://bugs.mojang.com/secure/thumbnail/510299/_thumb_510299.png&quot; style=&quot;border: 0px solid black&quot; role=&quot;presentation&quot;/&gt;&lt;/a&gt;&lt;/span&gt;  &lt;span class=&quot;image-wrap&quot; style=&quot;&quot;&gt;&lt;a id=&quot;510300_thumb&quot; href=&quot;https://bugs.mojang.com/secure/attachment/510300/510300_2022-10-16_23.50.37.png&quot; title=&quot;2022-10-16_23.50.37.png&quot; file-preview-type=&quot;image&quot; file-preview-id=&quot;510300&quot; file-preview-title=&quot;2022-10-16_23.50.37.png&quot;&gt;&lt;img src=&quot;https://bugs.mojang.com/secure/thumbnail/510300/_thumb_510300.png&quot; style=&quot;border: 0px solid black&quot; role=&quot;presentation&quot;/&gt;&lt;/a&gt;&lt;/span&gt; &lt;/p&gt;</comment>
                            <comment id="1163994" author="JIRAUSER566325" created="Sun, 15 May 2022 13:17:41 +0200"  >&lt;p&gt;Can confirm in 1.18.2 and 22w19a.&lt;/p&gt;</comment>
                            <comment id="1138425" author="JIRAUSER71590" created="Sun, 30 Jan 2022 07:09:10 +0100"  >&lt;p&gt;Mojang has triaged this, so yes, it IS a bug.&lt;/p&gt;</comment>
                            <comment id="1138410" author="purpledragonnuke" created="Sun, 30 Jan 2022 03:01:03 +0100"  >&lt;p&gt;This isn&apos;t a bug, minecarts only bounce off solid blocks, and redstone blocks are transparent.&lt;/p&gt;</comment>
                            <comment id="1135612" author="JIRAUSER715372" created="Thu, 13 Jan 2022 16:22:50 +0100"  >&lt;p&gt;This bug affects 1.18.1 as well.&lt;/p&gt;

&lt;p&gt;When a Minecart is moving on a Powered Rail, one of the final checks it does is to see if it will bounce off of a wall. The function it uses for this check will let the Minecart bounce off if the block in question is considered a &quot;solid block.&quot; For most blocks, there are two requirements to be a solid block:&lt;/p&gt;
&lt;ul&gt;
	&lt;li&gt;The block&apos;s material must block light&lt;/li&gt;
	&lt;li&gt;The block must be a full cube&lt;/li&gt;
&lt;/ul&gt;


&lt;p&gt;However, a block can be explicitly set not to be considered solid even if it otherwise meets the above requirements. Blocks set this way include:&lt;/p&gt;
&lt;ul&gt;
	&lt;li&gt;Glass of all types&lt;/li&gt;
	&lt;li&gt;Beacon&lt;/li&gt;
	&lt;li&gt;Redstone Block&lt;/li&gt;
	&lt;li&gt;Observer&lt;/li&gt;
	&lt;li&gt;Piston (even retracted Pistons will stop a Minecart)&lt;/li&gt;
&lt;/ul&gt;


&lt;p&gt;Glass and Beacons already fail the first check of blocking light. I assume that the rest were made non-solid for use in redstone contraptions. There are also a couple of odd blocks out:&lt;/p&gt;
&lt;ul&gt;
	&lt;li&gt;TNT stops Minecarts (its material doesn&apos;t block light)&lt;/li&gt;
	&lt;li&gt;Soul Sand is explicitly set as a solid block, so Minecarts will bounce off&lt;/li&gt;
&lt;/ul&gt;


&lt;p&gt;&lt;b&gt;Possible fix:&lt;/b&gt; Modify the Minecart bounce-off check to work with full cube blocks. Replacing the check outright might make Soul Sand no longer work as it is hardcoded as solid and is not a full cube.&lt;/p&gt;</comment>
                            <comment id="1135182" author="aceplante" created="Tue, 11 Jan 2022 03:35:02 +0100"  >&lt;p&gt;affects 1.17 and happens with glass too&lt;/p&gt;</comment>
                            <comment id="1088919" author="JIRAUSER504770" created="Tue, 12 Oct 2021 17:22:19 +0200"  >&lt;p&gt;Affects 21w40a&lt;/p&gt;</comment>
                            <comment id="960128" author="JIRAUSER566325" created="Mon, 29 Mar 2021 14:28:18 +0200"  >&lt;p&gt;Can confirm in 21w11a.&lt;/p&gt;</comment>
                            <comment id="927578" author="JIRAUSER566325" created="Sat, 20 Feb 2021 17:05:30 +0100"  >&lt;p&gt;Video attached.&lt;/p&gt;</comment>
                            <comment id="926033" author="JIRAUSER566325" created="Thu, 18 Feb 2021 19:49:44 +0100"  >&lt;p&gt;Can confirm in 21w07a.&lt;/p&gt;</comment>
                            <comment id="919984" author="JIRAUSER566325" created="Fri, 12 Feb 2021 14:06:43 +0100"  >&lt;p&gt;Can confirm in 21w06a.&lt;/p&gt;</comment>
                            <comment id="912650" author="JIRAUSER566325" created="Thu, 4 Feb 2021 19:41:11 +0100"  >&lt;p&gt;Can confirm in 21w05b.&lt;/p&gt;</comment>
                            <comment id="39454" author="bljat" created="Thu, 24 Jan 2013 19:12:03 +0100"  >&lt;p&gt;For feature suggestions/changes please use the &lt;a href=&quot;http://www.minecraftforum.net/forum/1-suggestions/&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;MineCraft Forums: Suggestions&lt;/a&gt;.&lt;/p&gt;</comment>
                            <comment id="39446" author="syberiyxx" created="Thu, 24 Jan 2013 18:57:31 +0100"  >&lt;p&gt;I would say that because the redstone block is in the shape of a solid block, it should behave like a solid block. It doesn&apos;t really make sense how it is IMHO.&lt;/p&gt;</comment>
                            <comment id="34002" author="bljat" created="Mon, 7 Jan 2013 16:48:13 +0100"  >&lt;p&gt;Redstone is a transparent block. Minecarts only bounce off of solid blocks.&lt;/p&gt;</comment>
                            <comment id="33404" author="kumasasa" created="Sat, 5 Jan 2013 23:23:42 +0100"  >&lt;p&gt;Confirmed.&lt;/p&gt;</comment>
                    </comments>
                <issuelinks>
                            <issuelinktype id="10102">
                    <name>Duplicate</name>
                                                                <inwardlinks description="is duplicated by">
                                        <issuelink>
            <issuekey id="216303">MC-137629</issuekey>
        </issuelink>
            <issuelink>
            <issuekey id="237175">MC-149145</issuekey>
        </issuelink>
            <issuelink>
            <issuekey id="317778">MC-182364</issuekey>
        </issuelink>
            <issuelink>
            <issuekey id="382854">MC-203675</issuekey>
        </issuelink>
            <issuelink>
            <issuekey id="382964">MC-203769</issuekey>
        </issuelink>
                            </inwardlinks>
                                    </issuelinktype>
                            <issuelinktype id="10103">
                    <name>Relates</name>
                                                                <inwardlinks description="relates to">
                                        <issuelink>
            <issuekey id="289043">MC-171903</issuekey>
        </issuelink>
            <issuelink>
            <issuekey id="365312">MC-198162</issuekey>
        </issuelink>
                            </inwardlinks>
                                    </issuelinktype>
                    </issuelinks>
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                            <attachment id="17286" name="2013-01-05_15.07.17.png" size="109133" author="syberiyxx" created="Sat, 5 Jan 2013 23:13:35 +0100"/>
                            <attachment id="510298" name="2022-10-16_23.49.17.png" size="123637" author="Awesoman3000" created="Mon, 17 Oct 2022 00:52:25 +0200"/>
                            <attachment id="510299" name="2022-10-16_23.49.32.png" size="125763" author="Awesoman3000" created="Mon, 17 Oct 2022 00:52:25 +0200"/>
                            <attachment id="510300" name="2022-10-16_23.50.37.png" size="117813" author="Awesoman3000" created="Mon, 17 Oct 2022 00:52:25 +0200"/>
                            <attachment id="381870" name="MC-6311.mp4" size="4550242" author="Avoma" created="Sat, 20 Feb 2021 17:05:45 +0100"/>
                            <attachment id="386273" name="minecart redstone block bounce.png" size="285749" author="Jack_McKalling" created="Mon, 8 Mar 2021 16:21:52 +0100"/>
                            <attachment id="386274" name="minecart redstone block no-bounce.png" size="479549" author="Jack_McKalling" created="Mon, 8 Mar 2021 16:21:52 +0100"/>
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