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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>
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<item>
            <title>[MC-4273] Sprinting and jumping on ice - last jump off ice</title>
                <link>https://bugs.mojang.com/browse/MC-4273</link>
                <project id="10400" key="MC">Minecraft: Java Edition</project>
                    <description>&lt;p&gt;Sprinting and holding jump on ice allows you to go faster than just sprinting does. However if you jump on the edge off a ledge you suddenly lose speed as if you jumped on a normal block - say dirt or stone. Speed is not lost if you jump before the edge.&lt;/p&gt;

&lt;p&gt;TL;DR: Jumping on one side of an ice block slows you down while the other does not.&lt;/p&gt;</description>
                <environment>Win7 64-bit - 64-bit Java - Java 8, Update 31</environment>
        <key id="16709">MC-4273</key>
            <summary>Sprinting and jumping on ice - last jump off ice</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="tbzz">Tobias Rudolph Kolbu</reporter>
                        <labels>
                            <label>ice</label>
                            <label>jump</label>
                            <label>jumping</label>
                            <label>sprint</label>
                            <label>sprinting</label>
                    </labels>
                <created>Sat, 8 Dec 2012 13:41:51 +0100</created>
                <updated>Tue, 12 May 2015 18:59:04 +0200</updated>
                            <resolved>Sat, 6 Apr 2013 20:46:11 +0200</resolved>
                                    <version>Minecraft 1.4.5</version>
                    <version>Minecraft 1.8.3</version>
                                                                        <votes>0</votes>
                                    <watches>1</watches>
                                                                            <comments>
                            <comment id="226312" author="tbzz" created="Sun, 3 May 2015 21:47:08 +0200"  >&lt;p&gt;Hi, I&apos;m sorry, but I forgot about this one.&lt;/p&gt;

&lt;p&gt;This hasn&apos;t been changed and the same behavior can still be observed in any minecraft version since this was posted. Including the most recent versions.&lt;/p&gt;

&lt;p&gt;To give some more context:&lt;br/&gt;
I don&apos;t think almost anyone would have a problem with this, let alone find out that it works. So I would say it has a very low priority.&lt;/p&gt;

&lt;p&gt;The reason I came upon this is because I enjoy the growing parkour side of minecraft. I&apos;ve made a few courses and upon experimenting with jump length limits, I came upon this.&lt;/p&gt;

&lt;p&gt;Two specific jumps that can only be done consistently if you are aware of this mechanic:&lt;br/&gt;
1. Sprint jumping on ice to gain speed -&amp;gt; 4 blocks forwards horizontally, 1 block up vertically.&lt;br/&gt;
2. Sprint jumping on ice to gain speed -&amp;gt; 6 blocks forwards horizontally, 1 block down vertically.&lt;/p&gt;

&lt;p&gt;These jumps are impossible if you hit an area within the red marker from the uploaded image. Within this area you lose some of your momentum.&lt;/p&gt;

&lt;p&gt;Jump before the edge, in the blue area, and your momentum is not affected.&lt;/p&gt;

&lt;p&gt;My thoughts on why this happens:&lt;br/&gt;
Your character barely passes the edge of the ice block, so you no longer stand in it&apos;s X or Z coordinate. A bit like you do when you sneak and try to walk off a block. Sneaking or not, you can stand in the adjecent block coordinates while still not falling off a block.&lt;/p&gt;

&lt;p&gt;Since you jump while being in an adjecent block coordinate, the game will instead use this block, instead of the ice block, to check for ice when jumping.&lt;/p&gt;

&lt;p&gt;TL;DR: You barely cross over into the next block when jumping. While still supported by the ice block, the block under you is air. Air != Ice, so you don&apos;t get the speed bonus,&lt;/p&gt;</comment>
                            <comment id="59096" author="bljat" created="Sat, 6 Apr 2013 20:46:11 +0200"  >&lt;p&gt;No answer on querry, assuming not an issue anymore.&lt;/p&gt;</comment>
                            <comment id="54180" author="bljat" created="Sat, 16 Mar 2013 19:33:09 +0100"  >&lt;p&gt;Is this still a concern in the current Minecraft version? If so, please update the affected versions in order to best aid Mojang ensuring bugs are still valid in the latest releases/pre-releases.&lt;/p&gt;</comment>
                    </comments>
                    <attachments>
                            <attachment id="14902" name="Bug - Ice Jump.png" size="288724" author="tbzz" created="Sat, 8 Dec 2012 13:41:51 +0100"/>
                    </attachments>
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