sketch out 'interaction registers'; fix bp hit count tracking

src/df/core/df_core.c

@@ -7031,7 +7031,7 @@ df_core_begin_frame(Arena *arena, DF_CmdList *cmds, F32 dt)
               if(bp->flags & DF_EntityFlag_HasTextPoint)
               {
                 DF_Entity *bp_file = df_entity_ancestor_from_kind(bp, DF_EntityKind_File);
-                DF_LineList lines = df_lines_from_file_line_num(scratch.arena, bp_file, bp_file->text_point.line);
+                DF_LineList lines = df_lines_from_file_line_num(scratch.arena, bp_file, bp->text_point.line);
                 for(DF_LineNode *n = lines.first; n != 0; n = n->next)
                 {
                   if(contains_1u64(n->v.voff_range, stop_thread_voff))

src/df/core/df_core.h

@@ -653,6 +653,34 @@ struct DF_TextLineDasm2SrcInfoList
   U64 count;
 };
 
+////////////////////////////////
+//~ rjf: Interaction Context Register Types
+
+typedef struct DF_InteractRegs DF_InteractRegs;
+struct DF_InteractRegs
+{
+  DF_Handle window;
+  DF_Handle panel;
+  DF_Handle view;
+  DF_Handle thread;
+  DF_Handle file;
+  TxtPt cursor;
+  TxtPt mark;
+  U64 unwind_count;
+  U64 inline_unwind_count;
+  U128 text_key;
+  TXT_LangKind lang_kind;
+  DF_LineList lines;
+  U64 vaddr;
+};
+
+typedef struct DF_InteractRegsNode DF_InteractRegsNode;
+struct DF_InteractRegsNode
+{
+  DF_InteractRegsNode *next;
+  DF_InteractRegs v;
+};
+
 ////////////////////////////////
 //~ rjf: Evaluation Visualization Types
 
@@ -1202,6 +1230,11 @@ struct DF_State
   F32 dt;
   F32 seconds_til_autosave;
   
+  // rjf: interaction registers
+  Arena *frame_arenas[2];
+  DF_InteractRegsNode base_interact_regs;
+  DF_InteractRegsNode *top_interact_regs;
+  
   // rjf: top-level command batch
   Arena *root_cmd_arena;
   DF_CmdList root_cmds;
@@ -1734,6 +1767,9 @@ internal F32 df_dt(void);
 internal U64 df_frame_index(void);
 internal F64 df_time_in_seconds(void);
 
+//- rjf: interaction registers
+internal DF_InteractRegs *df_interact_regs(void);
+
 //- rjf: undo/redo history
 internal DF_StateDeltaHistory *df_state_delta_history(void);