Minecraft Java Edition 1.21.11

In the realm of environment attributes, modifiers play a crucial role in enhancing the gaming experience. An Environment Attribute source can either override a specific attribute value or apply a modifier to a value provided by a source of lower priority. For instance, the overworld dimension sets a waterfogenddistance of 96.0, while the plains biome modifies this distance with a multiply modifier of 0.85. Consequently, within the plains biome, the effective distance becomes 96.0 * 0.85 = 81.6, whereas in other Overworld biomes, it remains at 96.0.

The range of available modifiers is contingent on the type of Environment Attribute. The most fundamental modifier, which is universally supported, is the override modifier, which simply replaces the preceding value. If no modifier is specified by an Environment Attribute source, the system defaults to override. For a comprehensive understanding of the various modifiers and their functionalities, one can refer to the Common Modifiers section.

Interpolation

While modifiers dictate how a value from one source is applied to another, interpolation concerns the blending of values within a single source. Not all Environment Attributes support interpolation, but for those that do, it facilitates a seamless transition between multiple values, particularly when traversing between biomes. For example, as a player moves from a plains biome, which has a skycolor of #ff0000, to a desert biome with a skycolor of #ffff00, the sky color will transition smoothly from red to yellow.

Interpolation occurs after modifiers have been applied when transitioning between multiple biomes. Within a timeline, interpolation is executed on the modifier arguments before they are applied. For instance, a timeline with a period of 24000 could define keyframes for sky_color at different times, allowing for gradual shifts in color as time progresses.

Environment Attribute Map

Dimension types and biome definitions now include an attributes field, allowing for the specification of Environment Attributes. This map typically takes the form of an object that links Environment Attribute IDs to their respective values. For example:

"attributes": {
    "minecraft:visual/fog_color": "#ffaa00",
    "minecraft:gameplay/water_evaporates": true
}

Values defined in this manner are assumed to utilize the override modifier by default. However, the value object can be expanded to express different modifiers, including optional fields for modifier and argument based on the chosen modifier.

Attribute Track

An Attribute Track within a timeline is formatted as an object with several fields, including ease, which determines the easing type for interpolation between keyframes. The keyframes field contains a list of keyframe objects, each specifying a ticks value and a corresponding value. For example, a timeline might specify that between ticks 362 and 23667, the value is 0.0, and between 23667 and 362, it increases to 0.7.

In this context, the specified value serves as the argument to the designated modifier, which is then applied atop sources with lower priority. For instance, if the modifier is set to maximum, the timeline will only elevate the value of catwakingupgiftchance to the specified track value.

Easing Types

Easing Types govern the interpolation between keyframes by applying a specific curve. A variety of built-in Easing Types are available, including constant, linear, and various other easing functions. Additionally, a Cubic Bézier can be specified for custom easing curves.

For developers looking to visualize and experiment with these easing functions, resources like easings.net and cubic-bezier.com offer valuable tools for exploration.

Common Data Types

Beyond standard primitive formats, the Environment Attributes system employs several common data types, including RGB and ARGB color formats, particle options, and mob activity identifiers. These data types are referenced throughout various sections of the system, providing consistency and clarity in implementation.

As the gaming landscape continues to evolve, the integration of these attributes and modifiers enhances the immersive experience, allowing for greater customization and dynamic interactions within the game world.

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