Java Edition 1.9.1-pre1

1.9.1-pre1

Edition	Java Edition
Release date	March 9, 2016
Type	Pre-release
Pre-release for	1.9.1
Downloads	Client (.json) Server
Protocol version	107
Data version	170
Resource pack format	2
Minimum Java version	Java SE 6
◄◄  1.9 1.9.1 1.9.2 ►► 1.9.1-pre1 1.9.1-pre2 ►

{
    "title": "1.9.1-pre1",
    "images": [
        "1.9.1-pre1.png",
        "Java Edition 1.9.1-pre1.png"
    ],
    "rows": [
        {
            "field": "''(link to Java Edition article, displayed as Java Edition)''",
            "label": "(link to Edition article, displayed as Edition)"
        },
        {
            "field": "March 9, 2016",
            "label": "Release date"
        },
        {
            "field": "(link to Pre-release article, displayed as Pre-release)",
            "label": "(link to Version types article, displayed as Type)"
        },
        {
            "field": "(link to Java Edition 1.9.1 article, displayed as 1.9.1)",
            "label": "Pre-release for"
        },
        {
            "field": "(link to pistondata:23386d5d39a8376ee23e61d65f27fb52ed5bee2b/client.jar article, displayed as Client) ((link to pistonmeta:440cb683d6c525e5c2201e2be89d75451c30c426/1.9.1-pre1.json article, displayed as .json))<br />(link to pistondata:04a6ca96d4024050c50570731568b94771ff7910/server.jar article, displayed as Server)",
            "label": "(link to Tutorial:Installing a version#Manual version installation article, displayed as Downloads)"
        },
        {
            "field": "107",
            "label": "(link to Protocol version article, displayed as Protocol version)"
        },
        {
            "field": "170",
            "label": "(link to Data version article, displayed as Data version)"
        },
        {
            "field": "2",
            "label": "<span style=\"white-space: normal;\">(link to Pack format#List of pack formats article, displayed as Resource pack format)</span>"
        },
        {
            "field": "<span class=\"plainlinks\">[https://en.wikipedia.org/wiki/Java_version_history#Java_SE_6 Java SE 6]</span>",
            "label": "<span style=\"white-space: normal;\">Minimum Java version</span>"
        }
    ],
    "invimages": [],
    "footer": "<table style=\"margin: auto; word-break: break-word;\">\n<tr style=\"background: inherit;\">\n<td style=\"padding: 0.4em\" rowspan=\"2\">[[Java Edition  1.9|<span style=\"margin-right:-0.35em\">◄</span>◄   1.9]]</td>\n<td style=\"padding: 0.4em\">'''[[Java Edition 1.9.1|1.9.1]]'''</td>\n<td style=\"padding: 0.4em\" >[[Java Edition  1.9.2|  1.9.2 <span style=\"margin-right:-0.35em\">►</span>►]]</td>\n</tr>\n<tr style=\"background: inherit;\">\n\n<td style=\"padding: 0.4em\">''' 1.9.1-pre1'''</td>\n<td style=\"padding: 0.4em\">\n[[Java Edition  1.9.1-pre2|  1.9.1-pre2 ►]]\n</td>\n</tr>\n</table>"
}

1.9.1-pre1 is the first pre-release for Java Edition 1.9.1, released on March 9, 2016.

Additions

Items

Armor

• New armor attribute: generic.armorToughness.
  • Damage formula is now $totalDamage=damage\times (1-\frac{max(\frac{defensePoints}{5},defensePoints-\frac{damage}{2+\frac{toughness}{4}})}{25})$, i.e. increased toughness means less armor defense point reduction from strong attacks.
  • Diamond armor has toughness 2, all other armor has toughness 0. A full set of diamond armor, therefore gives a toughness attribute of 8.
• New option enableWeakAttacks in options.txt.
  • Defaults to false. When false, the client will ignore attempts to attack when weapon cooldown is less than 75% recharged.
  • The effect was removed in the final release, however the option itself remains.

Elytra

• Added sound effects, while gliding in the Elytra.
  • Sound event item.elytra.flying.

Changes

Blocks

Dispensers

• Increased limit per tick for scheduled tile ticks from 1,000 to 65,536.

Hoppers

• Can now push and pull items to and from chests, that are blocked from opening.

Mobs

General

• Improved AI.

Command format

Target selectors

• Entity selector c (count) now sorts on proximity using true coordinates, not coordinates snapped to the grid.

Gameplay

Combat

• Missing an attack no longer triggers the weapon cooldown (later reverted in final release.)

General

Loot tables

• Now also work with dispensers and droppers.
  • Dispensers with arrows in jungle temples now use loot tables.

Session IDs

• Now no longer printed by the game to the log files or to the launcher.

Fixes

7 issues fixed

From released versions before 1.9.1

• MC-7961 – Hopper can't fill or empty a chest if the chest is blocked from opening.
• MC-56162 – Setting /worldborder damage amount 0 doesn't work.
• MC-95352 – Spatial target arguments c, dx, dy, dz behave unexpectedly and inconsistently.

From version 1.9

• MC-90257 – A chain of command blocks may takes more than 1 tick to traverse.
• MC-96219 – Block duplication bug with pistons (ghost blocks).
• MC-96927 – Selector c targeting inaccurate entity position.
• MC-98327 – Elytra texture transparency issues.

Other fixes:

• Fixed game engine adding non-existent entities (failed mob spawns, etc.) to its internal lists, increasing instability.

Videos

Video made by slicedlime:

Trivia

This version was previously removed from the launcher for some time, but was added back in September 2018.