From 7f040d35d99d2c78e151822ba1fbcd99bcff613a Mon Sep 17 00:00:00 2001
From: kraflab <kraflab@gmail.com>
Date: Sat, 7 Aug 2021 18:08:12 +0200
Subject: [PATCH] Track reference splits

---
 prboom2/src/dsda/intermission_display.c |  8 ++++++--
 prboom2/src/dsda/split_tracker.c        | 22 +++++++++++++++++-----
 prboom2/src/dsda/split_tracker.h        |  2 ++
 3 files changed, 25 insertions(+), 7 deletions(-)

diff --git a/prboom2/src/dsda/intermission_display.c b/prboom2/src/dsda/intermission_display.c
index ac4d6a205..d6d100370 100644
--- a/prboom2/src/dsda/intermission_display.c
+++ b/prboom2/src/dsda/intermission_display.c
@@ -54,6 +54,10 @@ void dsda_InitIntermissionDisplay(patchnum_t* font) {
 
 extern int leveltime, totalleveltimes;
 
+static int dsda_SplitComparisonDelta(dsda_split_time_t* split_time) {
+  return split_time->ref ? split_time->ref_delta : split_time->best_delta;
+}
+
 static void dsda_UpdateIntermissionTime(dsda_split_t* split) {
   char* s;
   char delta[16];
@@ -66,7 +70,7 @@ static void dsda_UpdateIntermissionTime(dsda_split_t* split) {
     const char* sign;
     int diff;
 
-    diff = split->leveltime.best_delta;
+    diff = dsda_SplitComparisonDelta(&split->leveltime);
     sign = diff >= 0 ? "+" : "-";
     color = diff >= 0 ? 0x30 + g_cr_gray : 0x30 + g_cr_green;
     diff = abs(diff);
@@ -112,7 +116,7 @@ static void dsda_UpdateIntermissionTotal(dsda_split_t* split) {
     const char* sign;
     int diff;
 
-    diff = split->totalleveltimes.best_delta / 35;
+    diff = dsda_SplitComparisonDelta(&split->totalleveltimes) / 35;
     sign = diff >= 0 ? "+" : "-";
     color = diff >= 0 ? 0x30 + g_cr_gray : 0x30 + g_cr_green;
     diff = abs(diff);
diff --git a/prboom2/src/dsda/split_tracker.c b/prboom2/src/dsda/split_tracker.c
index 8cbdd8c11..d62cd1613 100644
--- a/prboom2/src/dsda/split_tracker.c
+++ b/prboom2/src/dsda/split_tracker.c
@@ -85,6 +85,8 @@ static void dsda_InitSplitTime(dsda_split_time_t* split_time) {
   split_time->best_delta = 0;
   split_time->session_best = 0;
   split_time->session_best_delta = 0;
+  split_time->ref = 0;
+  split_time->ref_delta = 0;
 }
 
 static void dsda_LoadSplits(void) {
@@ -102,7 +104,7 @@ static void dsda_LoadSplits(void) {
     return;
 
   if (M_ReadFile(path, &buffer) != -1) {
-    int episode, map, tics, total_tics, exits, count, i;
+    int episode, map, tics, total_tics, exits, count, i, ref_tics, ref_total_tics;
     char* line;
 
     line = strtok(buffer, "\n");
@@ -113,8 +115,13 @@ static void dsda_LoadSplits(void) {
     }
 
     while (line) {
-      count = sscanf(line, "%i %i %i %i %i", &episode, &map, &tics, &total_tics, &exits);
-      if (count != 5)
+      ref_tics = ref_total_tics = 0;
+      count = sscanf(
+        line, "%i %i %i %i %i %i %i",
+        &episode, &map, &tics, &total_tics, &exits,
+        &ref_tics, &ref_total_tics
+      );
+      if (count < 5)
         break;
 
       i = dsda_splits_count;
@@ -126,6 +133,8 @@ static void dsda_LoadSplits(void) {
       dsda_splits[i].map = map;
       dsda_splits[i].leveltime.best = tics;
       dsda_splits[i].totalleveltimes.best = total_tics;
+      dsda_splits[i].leveltime.ref = ref_tics;
+      dsda_splits[i].totalleveltimes.ref = ref_total_tics;
       dsda_splits[i].exits = exits;
       dsda_splits[i].run_counter = 0;
 
@@ -153,12 +162,14 @@ void dsda_WriteSplits(void) {
 
   for (i = 0; i < dsda_splits_count; ++i) {
     p += sprintf(
-      p, "%i %i %i %i %i\n",
+      p, "%i %i %i %i %i %i %i\n",
       dsda_splits[i].episode,
       dsda_splits[i].map,
       dsda_splits[i].leveltime.best,
       dsda_splits[i].totalleveltimes.best,
-      dsda_splits[i].exits
+      dsda_splits[i].exits,
+      dsda_splits[i].leveltime.ref,
+      dsda_splits[i].totalleveltimes.ref
     );
   }
 
@@ -170,6 +181,7 @@ static void dsda_TrackSplitTime(dsda_split_time_t* split_time, int current) {
   split_time->current = current;
   split_time->best_delta = current - split_time->best;
   split_time->session_best_delta = current - split_time->session_best;
+  split_time->ref_delta = current - split_time->ref;
 
   if (current < split_time->best || !split_time->best)
     split_time->best = current;
diff --git a/prboom2/src/dsda/split_tracker.h b/prboom2/src/dsda/split_tracker.h
index e08f74e8e..c743ddf8f 100644
--- a/prboom2/src/dsda/split_tracker.h
+++ b/prboom2/src/dsda/split_tracker.h
@@ -24,6 +24,8 @@ typedef struct {
   int best_delta;
   int session_best;
   int session_best_delta;
+  int ref;
+  int ref_delta;
 } dsda_split_time_t;
 
 typedef struct {