MCreator release notes

On this page, you can find release notes for some versions of MCreator. You can find downloads of older versions on all downloads. Through time, server protocols, installation procedures, and many other elements of MCreator changed so there can be some differences between versions. You can find these notes on this page.

2024.4

• The music disc mod element type was merged into the item mod element type. Existing mod elements will be converted automatically

2024.3

• Redesigned enchantment mod element editor to fit modern enchantment definition. Some fields were removed and some will be automatically converted. We recommend manually verifying and correcting existing enchantments in your workspace if necessary.
• The plant type procedure block has been removed. Existing blocks will be converted to logic blocks with the value false. We recommend using custom tags for plant type checks from now on.
• Certain itemstack procedure blocks now require world dependency. It will be automatically added to existing procedures.
• [Plugins] API plugins can now specify additional texture reference sources, allowing modders to reference textures from other mods in their mods

2024.2

• XP dropped dependency is no longer present in block broken global procedure trigger
• Custom enchantment mod element minimal level is now fixed to 1, existing enchantment mod elements will have the minimal level set to 1 automatically
• Removed harvest level parameter from blocks and replaced it with vanilla tool tier parameter. Vanilla harvest levels will be converted automatically. For custom tiers, a custom harvest condition procedure needs to be used. We recommend using custom tags to tag blocks a certain custom tool tier/type can harvest.
• Removed harvest level parameter from tools and replaced it with drop tier parameter. Vanilla harvest levels will be converted automatically. For custom tiers, a custom drop condition procedure needs to be used. We recommend using custom tags to tag blocks a certain tool can harvest.
• Harvest level procedure blocks for blocks and items were removed. As the concept of harvest levels no longer exists, existing blocks will be converted to math blocks with a value of 0.
• Due to changes to the creative tab ordering system, custom mod element ordering in creative tabs will have to be manually redone. If the user did not alter the order of the tabs using the creative tab order editor tool, no changes are needed and the order will be preserved.

2024.1

• MCreator now uses FlatLaf for its look and feel. Themes can now specify all properties of the FlatLaf such as border style, font sizes, component spacing, and more. Themes can also import IntelliJ-based JSON themes.
• Mod base files locking system was replaced with custom user code blocks. Existing code will have to be manually migrated to code blocks.
• Themes can now define images in either SVG (recommended for HiDPI and Retina screens) or PNG format. GIF format is no longer supported. Some icons were renamed and/or removed.
• Tags are now managed in a workspace tab. Existing tag mod elements will be converted to tag entries automatically.
• Deal custom damage procedure block was removed. Existing procedures will be converted to deal a generic-type damage. Custom damage types should be now used to provide custom damage messages.
• MCreator now requires plugins to specify the exact versions of the software they work with. Plugins need to specify the array of versions they support.
• Attack damage value was adjusted so UI and in-game values match for item and tool (sword, hoe, special, multitool) mod elements. Manual adjustments may be needed.
• [Plugins] Generators can now exclude specific folders from an imported generator

2023.4

• Custom living entities with a glow texture specified will have this parameter converted to a model layer with a glow
• Existing structure mod elements will be converted to the feature mod element, as old structures are effectively a feature. If the structure uses structure generated procedure trigger, the call of that trigger needs to be manually added to the condition procedure.
• Ranged item mod elements from old workspaces will be automatically converted to projectile and item mod element pairs
• Removed additional generation conditions from blocks and plants. Existing blocks and plants using those conditions will be automatically converted to fully equivalent feature mod elements
• Dimension restriction parameters were removed. Instead, biome restrictions with tags should be used when needed. Existing workspaces will be converted for cases of single-dimension restriction. For multiple-dimension restrictions, a new biome tag with biomes or biome tags from these dimensions needs to be manually added.
• [Plugins] Custom Blockly categories can declare their parent category, supporting a tree-like toolbox

2023.3

• On stopped using triggers were removed from music disc and tool mod element as they do not work with those item types
• Removed is block material type procedure block. Existing blocks will either be converted to a suitable block tags check or to a false procedure block if no suitable conversion is found
• Removed "any concrete" and "any concrete powder" blocks because the tag for them does not exist in the game

2023.2

• Vanilla creative tabs differ slightly between generator versions but target Minecraft 1.19.4 with namings
• Removed biome custom features (grass, flowers, cacti, reeds, ... per chunk). Existing configurations will be converted to default biome features if possible. For more control over biome features, a feature mod element should be used.
• Workspace VCS system (remote workspaces) has been moved to a community plugin
• [Plugins] Plugins can now define new preferences dialog sections and entries
• [Plugins] Plugins can now define recent changes when using a plugin update data file
• [Plugins] Plugins can now properly add actions to the main toolbar
• [Plugins] Plugins can now add custom vertical tabs to a workspace
• [Plugins] Plugins can now add buttons to the workspace selector

2023.1

• Migrated biome generation system to the new biome parameter point ranges system. Existing biomes will be converted automatically.
• Labels using tokens in custom GUIs and overlays will no longer replace tokens with values but show raw tokens instead. This system was replaced by string return value procedures that can be used as a text source for labels. Manual conversion will be needed.
• Particle parameters were removed from the custom block and living entity mod elements. Procedures should be used instead. Existing particle spawning parameters need to be manually converted to procedures.
• Custom fluid element generation was moved to the feature mod element. Existing generation setups will be converted automatically.
• Using the MCREATOR_HOME environment variable, one can specify an alternative folder location for data storage
• [Plugins] Added support for list templates, which allows generating similar templates for a list of data from the mod element
• [Plugins] Generator template parameter exclude has been removed and should be replaced with conditions, deleteWhenConditionFalse parameter is now ignored and handled automatically instead
• [Plugins] Added support for list inputs. statements and fields, making custom Blockly mutators possible
• [Plugins] Java plugins can now declare and use custom Blockly editors
• [Plugins] Custom template sections for the preferences dialog can now be added using Java plugins

2022.3

• Due to a bug in Minecraft Forge, execute the command as entity procedure block with a player as the entity will not work with Forge versions before 43.1.3 if the player does not have cheats enabled
• Dropped support for biome categories and biome dictionary. This system is replaced by biome tags that need to be manually migrated. Procedures using biome dictionary checks will be converted to biome tag checks automatically.
• When a procedure without a return value of action result type is called on the item right-clicked trigger, SUCCESS result is now returned instead of PASS

2022.2

• Added 4 new texture categories: entities, effects, particles, and screens. Existing workspaces will be converted to new categories automatically.
• Removed fuel mod element (replaced by the new item extension mod element). Existing fuel mod elements will be converted to item extensions automatically.
• Removed custom item dispense behavior settings (replaced by the new item extension mod element). Existing item mod element dispense behavior settings will be converted to item extensions automatically.
• Replaced current shoot ranged item procedure block with new projectile procedure blocks
• [Plugins] Replaced some of the custom Blockly extensions with a new field type
• [Plugins] Added a new template type for command arguments

2022.1

• [FG 1.18.2] Biome spawning is now greatly affected by weight, height base and variation, temperature, and rainfall chance. Tinkering with these parameters to achieve a good generation will be needed by most of the mods 
• The food mod element was merged into the item mod element. Existing food mod elements will be converted to items automatically
• Block position x, y, and z blocks were removed as x, y, and z blocks act like those by default when appropriate
• Changed the format of ranged item projectile entity registry name
• Workspace encoding was changed from system default to UTF-8, so on some computers, non-standard characters may need to be re-entered where they broke. Some workspaces may need to have translation tables exported to CSV, deleted, then re-imported in 2022.1

2021.3

• Java entity models before 1.17 are not compatible with 1.17 and vice versa. Two separate instances with the same name need to be imported, one for an older generator and one in 1.17 generators and MCreator will pick the right version depending on the current generator
• Custom wall blocks now need to be tagged in the walls vanilla blocks tag group to make them connect with other wall types
• [Plugins] Generators can now use global templates for each mod element type
• [Plugins] Generators can now use common definition files for different base types
• [Plugins] Generators no longer need to define partial support for mod elements as MCreator automatically detects coverage support using excludes/includes parameters.
• [Plugins] Variables and procedure categories can now use hex color codes
• [Plugins] Plugins can now register custom Blockly JavaScript files
• [Plugins] Plugins now fully support custom data lists

2021.2

• Custom blocks using log rotation in existing world saves may change placement direction
• Changed custom code mod element default template
• Registry names of some blocks may change, reverting translations, structures, and existing world saves
• [Plugins] Plugins can now add new local variable types
• [Plugins] Generator plugins can now specify UI field exclusions or inclusions
• [Plugins] Plugins can now specify update check URL
• [Plugins] Plugins can now add new entity model animations
• [Plugins] Plugins can now add custom themes
• [Plugins] Plugins can now add new global variable types

2021.1

• Dimension ID and dimension comparison procedures may need to be redone in some cases
• Block, dimension portal, and plant elements now specify the light value in the range from 0-15. Existing workspaces will be upgraded automatically.
• Sand patches per chunk parameter may need to be redefined in custom biome mod elements
• [FG 1.16.5] Custom biome underground and ground blocks need forge:dirt Blocks tag for custom trees to generate
• [Plugins] Procedure block statement inputs can now declare incompatibility with local variables
• [Plugins] Procedure blocks can now declare incompatibility with statement blocks

2020.5

• Existing images in custom GUIs will not draw proper bounding box in the GUI editor previews and should be re-imported from the original image when possible
• [Plugins] Failure to properly generate the Freemarker template of the procedure block will now cause the whole procedure code generation to fail
• [Plugins] Added Blockly shadow block support for optional inputs
• [Plugins] Added Blockly statement input with optional dependency context support

2020.4

• Existing custom biomes might need to have custom colors cleared to use default colors
• Global variables are now only synced from server-side to client-side and not the other way around to prevent malicious forging of data by sending packets with altered data from client-side to server-side
• Overlay and particle spawning conditions need to be redefined using the new condition system
• [Plugins] Data lists (eg. block and items list) can now be extended (eg. with elements from other mods), using plugins
• [Plugins] Plugins can now add texture maker, animation maker, procedure, and AI task templates
• [Plugins] Added option to define custom APIs, libraries, and support mods similar to how MCreator Link is implemented (APIs get automatically installed when enabled) and make procedures, triggers and AI tasks that require specific API enabled to work

2020.3

• Workspace resources (textures, structures, and sounds) are now stored in the Gradle resources folder only (folders <workspace dir>/sounds, <workspace dir>/textures, <workspace dir>/structures can be removed from the workspace; before opening older workspaces, it is recommended to regenerate the code in the old version before opening it in the new one)
• Dropped Minecraft 1.12.2 generator support
• Mod element camel-case name is now automatically converted to snake-cased registry name
• "On collided with the player" and "on right-clicked on living entity" triggers now have source and target entity swapped
• Custom tools of type multi-tool now have harvest level
• [Code only] Custom GUIs now use IItemHandler instead of IInventory
• [Code only] Main mod file naming scheme changed for compatibility reasons

2020.2

• [Code only] All mod elements with locked code (including main mod files) will have to be redone due to massive changes in the project structure, existing locked files will be removed on the code regeneration process
• Blocks are now bound to a custom GUI instead of GUIs being bound to blocks
• Minecraft 1.12.2 is now marked as a deprecated version

2020.1

• Minecraft 1.12.2 is now a legacy version, and 1.14.4 is the next LTS version to follow the Minecraft Forge's LTS versions
• Any advancement can now be triggered by procedures: existing procedure blocks need to have advancements re-selected
• Attack damage parameter is no longer offset so existing values need to be corrected (see #55543)

2019.5

• Switch dimension procedure block now has a dropdown of dimensions: existing procedure blocks of this type need target dimension reselected