Build an Animation Blueprint
A guided example: build a locomotion blend space, an Animation Blueprint with a state machine, bound transition rules, an upper body layer, and a montage with notifies, then validate it.
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A guided example: build a locomotion blend space, an Animation Blueprint with a state machine, bound transition rules, an upper body layer, and a montage with notifies, then validate it.
This walkthrough builds a working locomotion setup from nothing: a blend space for ground movement, an Animation Blueprint, a state machine with real transition rules, an upper body layer, and a montage with notifies. Every command in the family is listed in the Animation reference.
A 2D blend space with direction across and speed up. Name and range each axis, then drop a sample per animation.
cfa create_blend_space --name BS_Locomotion --path /Game/Anims --skeleton /Game/Chars/SK_Hero --kind blendspace_2dDirection runs -180 to 180 and wraps, speed runs 0 to your jog speed. Do this before adding samples so the samples land where you expect.
cfa set_blend_space_axis --blend-space-path /Game/Anims/BS_Locomotion --axis x --display-name Direction --min -180 --max 180One call per animation. An idle row at speed 0, a walk ring, a jog ring. The blend space triangulates them for you.
cfa add_blend_space_sample --blend-space-path /Game/Anims/BS_Locomotion --animation /Game/Anims/Jog_Fwd --x 0 --y 500Bound to a skeleton, with a preview mesh so you can see it move. It arrives with an AnimGraph ready to use.
cfa create_anim_blueprint --name ABP_Hero --path /Game/Anims --skeleton /Game/Chars/SK_Hero --preview-mesh /Game/Chars/SKM_HeroStates, plus conduits for shared entry logic and aliases that stand in for several states at once.
cfa add_anim_state --blueprint-path /Game/Anims/ABP_Hero --graph AnimGraph/Locomotion --name IdleBind a bool variable as the rule. Add --rule-inverted for the way back, so leaving a state does not need a hand built NOT.
cfa add_anim_transition --blueprint-path /Game/Anims/ABP_Hero --graph AnimGraph/Locomotion --from Idle --to Move --rule-variable bIsAccelerating --crossfade-duration 0.15Put aiming or a weapon pose on its own layer, then blend it over locomotion per bone. Share it between blueprints with a layer interface.
cfa add_anim_layer --blueprint-path /Game/Anims/ABP_Hero --name UpperBodyPoseAssemble the montage, add named sections you can chain, then place notifies and notify states on their own tracks.
cfa create_anim_montage --name AM_Attack --path /Game/Anims --skeleton /Game/Chars/SK_Hero --animation /Game/Anims/Attack_01Lay the state machine out as a readable block, with each transition sitting between the two states it joins.
cfa arrange_blueprint_graph --blueprint-path /Game/Anims/ABP_Hero --function-name AnimGraph/LocomotionReturns a verdict plus every compiler warning, including transitions that can never fire because their rule was never bound.
cfa validate_anim_blueprint --blueprint-path /Game/Anims/ABP_Hero--rule-variable leaves its Can Enter Transition pin empty, so the state machine reaches that state and never leaves it. The blueprint still compiles, so nothing stops you. Run validate_anim_blueprint and read the warnings: it names every transition that can never fire. For a time based transition set bAutomaticRuleBasedOnSequencePlayerInState instead, and clear Loop Animation on that state's sequence, because a looping animation never ends and the rule never fires.AnimGraph/Locomotion/Idle. Use list_anim_graphs to see the tree. Transition rule graphs are all named Transition, so a bare name is ambiguous and refused; pass the #N suffix the listing gives you.cfa describe add_anim_transition.