Continue work on CActor::UpdateAnimation; lots of headers n stuff

include/MetroidPrime/CAdditiveAnimPlayback.hpp

@@ -0,0 +1,38 @@
+#ifndef _CADDITIVEANIMPLAYBACK_HPP
+#define _CADDITIVEANIMPLAYBACK_HPP
+
+#include "types.h"
+
+#include "rstl/rc_ptr.hpp"
+
+class CAnimTreeNode;
+
+class CAdditiveAnimationInfo {
+private:
+  f32 x0_fadeInDur;
+  f32 x4_fadeOutDur;
+};
+
+class CAdditiveAnimPlayback {
+public:
+  enum EPlaybackPhase {
+    kPP_None,
+    kPP_FadingIn,
+    kPP_FadingOut,
+    kPP_FadedIn,
+    kPP_FadedOut,
+  };
+
+private:
+  CAdditiveAnimationInfo x0_info;
+  rstl::ncrc_ptr< CAnimTreeNode > x8_anim;
+  f32 xc_targetWeight;
+  f32 x10_curWeight;
+  bool x14_active;
+  f32 x18_weightTimer;
+  EPlaybackPhase x1c_phase;
+  bool x20_needsFadeOut;
+};
+CHECK_SIZEOF(CAdditiveAnimPlayback, 0x24)
+
+#endif