Parentheses for expression term evaluation control We are hoping people will experiment with them and give us feedback, so we can move them into general usage. Some operators are under Experimental Molang Features at the moment in the list below. Complex expressions evaluate to 0.0 unless there is a return statement, in which case the evaluated value of the return's sub-expression will be returned out of the current scope. ![]() In complex cases, multiple sub-expressions are each terminated with a semicolon. In simple cases, the terminating is omitted and the expression result is returned. An expression can be made of either one simple value or math calculation, or can be made of several sub-expressions where more complicated code is required. The language structure is largely based on simple 'C' language family style syntax. Additionally, is_scenting is_rising and is_feelingHappy queries are no longer available timer_flag_1, timer_flag_2, and timer_flag_3 can be used instead. Renamed block_property and has_block_property to block_state and has_block_state post this version.ĭeprecated block_property and has_block_propertyīlock_property is no longer supported, as that logic is done in the animation. Now they evaluate as A ? B : (C ? D : E).įixed Logical AND to evaluate before Logical OR, and for comparison operators to evaluate before equality operators.įixed error where dividing by a dynamically determined negative variable resulted in a division by the absolute (positive) value of the number instead.įixed query.cape_flap_amount using the wrong player rotation (head rotation instead of body rotation). Previously nested conditional expressions like A ? B : C ? D : E would evaluate as (A ? B : C) ? D : E. ![]() Also added more explicit error detection for when an unknown token is encountered.įixed conditional (ternary) operator associativity. For example "'text' + 1" will now cause a content error.Īdded error detection for too many operators in parentheses or brackets, such as '1+(2 3)'. Also fixed normalization logic in that query to go from 1 to 0 instead of 0 to 1.Īdded new error messages for invalid expressions which previously ran with unexpected results. (Not actually a Versioned Change)įixed em_remaining_use_duration conversion from ticks to seconds (multiplied by 20 instead of dividing). Initial support for Versioned Changes added. Versioned Change Versions Pack min_engine_version Any Versioned Change with a version less than or equal to that version number will be in effect. To know which Versioned Changes are in effect, look at the "min_engine_version" of the manifest.json of the resource or behavior pack that contains your Molang expression. This is a list of the Versioned Changes that have been added, along with the corresponding game version. Molang Versioned Change versions apply to each expression separately, so it's possible to have different versions active if multiple packs are loaded. This allows for changes to how Molang works without breaking existing content. ![]() Molang uses the "min_engine_version" from the manifest.json of the resource or behavior pack that contains each Molang expression to determine which version of the rules to apply. Its focus is to enable low-level systems like animation to support flexible data-driven behavior for both internal and external creators, while staying highly performant. Molang is a simple expression-based language designed for fast, data-driven calculation of values at run-time, and with a direct connection to in-game values and systems.
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