Transitions

Transition Properties

Not a node as such, but this covers the properties on transitions:

A Transition

Supported properties

Transition Properties

• Transition

  • Priority Order is supported

  • Bidirectional is unsupported

  • Blend Logic is unsupported (always assumes a Standard Blend)

  • Transition Rule Sharing is unsupported

  • Transition rules themselves are covered below
  • Automatic Rule Based On Sequence Player In State is supported

  • Automatic Rule Trigger Time is supported (both nonnegative and negative configurations)

  • Sync Group Name to Require Valid Markers Rule is unsupported

• Blend Settings

  • Note: Blend settings are always assumed to be a linear transition over 0.2s whenever a state change occurs within the crowd (see CrowdAnimBlueprintCommon::CrossfadeDuration constant)
• Events
• Notifications

Transition Rules

Simple transition rules can be achieved through comparisons on one or more inputs combined with logical operations.

For example, the following kinds of expressions would be supported

• AnimVar.IsMoving == 1

• AnimVar.HasLowGravity != 0

• (Get Relevant Anim Time > 0.4) & (AnimVar.IsJogging == 1)

where the expressions are all of the form [Input] [Comparison] [Constant]. The last case is simply a logical combination of two of these, which also fine.

A simple transition rule just reading a single Anim Var property via a macro

A more complex transition rule reading two properties with some logic

Variables Supported

• Anim Var inputs

  • Anim Var inputs generally supported

  • As noted here, Boolean variables are all internally represented as float, so care around precision may be needed in comparisons
• Timestamp tests on state machine

  • Get Relevant Anim Time

  • Get Relevant Anim Time Fraction

  • Get Relevant Anim Time Remaining

  • Get Relevant Anim Time Remaining Fraction

• Timestamp tests on asset player

  • Current Time

  • Current Time (ratio)

  • Time Remaining

  • Time Remaining (ratio)

Comparisons

• Floating point comparisons: <, <=, =, !=, >=, >
• Non-floating point comparisons (e.g. enums), unsupported
• In Range node supported on float and integer types

Logical Ops Supported

• And
• Or
• Xor
• Not

Misc

• Macros
• Struct breaking (e.g. extracting a component from a vector)