feat(animation): Animation System — sprite state machine, frame events (RF4.9)#63
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feat(animation): Animation System — sprite state machine, frame events (RF4.9)#63
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…(RF4.9) - Add AnimationComponents.hpp: FrameRect, AnimationClip, AnimationTransition, AnimationState, Animator component (HashMap state machine, frame events) - Add AnimationSystem.hpp: ECS::ISystem impl with onUpdate() iterating Animator+Sprite, state machine evaluation, frame advance, frame events - Add test_animation.cpp: 22 tests covering defaults, state transitions, frame clamping/looping, pause/resume/setSpeed/play/isPlaying - Update Caffeine.hpp with animation includes - Update tests/CMakeLists.txt to always compile test_animation.cpp - Update docs/fase4/animation.md (status ✅, API rewrite) and README.md
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Summary
AnimationComponents.hpp(always compiled) andAnimationSystem.hpp(ECS ISystem)test_animation.cppcovering defaults, transitions, frame math, imperative APIFiles
src/animation/AnimationComponents.hppFrameRect,AnimationClip,AnimationTransition,AnimationState,Animatorsrc/animation/AnimationSystem.hppAnimationSystem : ECS::ISystemtests/test_animation.cppsrc/Caffeine.hpptests/CMakeLists.txttest_animation.cppadded to base sourcesdocs/fase4/animation.mddocs/fase4/README.mdDesign Notes
onUpdate(World&, f32)matches actualISysteminterface (notupdate(World&, f64)from spec)Sprite::frameIndexupdated per frame (engine has nosrcRecton Sprite)HashMap<FixedString<32>, AnimationState>— works viaoperator==linear searchhasExitTimeon transitions: waits for clip to finish before checking conditionplay/pause/resume/setSpeed/isPlaying) takesWorld&+Entity— consistent with PhysicsSystem2D pattern