1 files changed, 11 insertions, 1 deletions
diff --git a/src/include/main.h b/src/include/main.h
index af92e31..fd295cf 100644
--- a/src/include/main.h
+++ b/src/include/main.h
@@ -325,7 +325,10 @@ struct project_state
     bool32 UpdateKeyframes = 0;
     bool32 UpdateFrame = 1;         // only refreshes frame; set UpdateKeyframes to update animation
     bool32 DebugDisableCache = 1;
+
+    // bad
     uint32 CachedFrameCount;
+    int32 LastCachedFrame = -10000;
 
     uint64 HotFramePerf = 0;
 
@@ -562,8 +565,10 @@ struct block_layer {
 
     bool32 IsPrecomp;
     bool32 Precomp_Toggled;
-    uint16 Block_Source_Index;          // also used for precomp
+    // NOTE(fox): References a precomp index if IsPrecomp is true, not a source index.
+    uint16 Block_Source_Index;
     uint16 Block_String_Index;
+    // References the precomp that the layer belongs to.
     uint16 Block_Composition_Index;
 
     uint16 Block_Mask_Index[MAX_MASKS];
@@ -594,8 +599,13 @@ struct block_layer {
     bool32 IsVisible;
     bool32 IsAdjustment;
 
+    // NOTE(fox): I use these in some places without calling
+    // Interact_Evaluate_Layer(), because I'm assuming it's impossible for
+    // layer dragging to happen in those contexts. Check for this if weird bugs appear.
     int32 Frame_Start;
     int32 Frame_End;
+    // This is what changes when the layer is dragged. It also marks the starting frame for video footage.
+    int32 Frame_Offset;
 
     real32 Vertical_Offset;
     real32 Vertical_Height = 1;