Backdate substitutions so that they're a bit easier to deal with.

[pkanalytics] / events.cpp

diff --git a/events.cpp b/events.cpp
index bf16202289f650913f49a1f1470149193966f33f..bce262555feda49dbd9718e0d4caa751750158f5 100644 (file)
--- a/events.cpp
+++ b/events.cpp
@@ -320,3 +320,48 @@ set<int> EventsModel::get_team_at(uint64_t t)
        }
        return team;
 }
+
+void EventsModel::set_team_at(uint64_t t, const set<int> &new_team)
+{
+       // Backdate to the last goal or stoppage, _or_ the last time someone
+       // going out is mentioned. (We don't really track injuries yet;
+       // do we want an explicit injury type? If we had one, it would probably
+       // be the simplest.)
+       uint64_t backdate_point = 0;
+       for (const Event &e : events) {
+               if (e.t > t) {
+                       break;
+               }
+               if (e.type == "goal" || e.type == "their_goal" || e.type == "stoppage" || e.type == "reset") {
+                       backdate_point = e.t + 1;
+               }
+               if (e.player_id.has_value() && !new_team.count(*e.player_id)) {
+                       backdate_point = e.t + 1;
+               }
+       }
+
+       // Delete all in/outs already at the backdate point.
+       for (unsigned i = 0; i < events.size(); ) {
+               if (events[i].t > backdate_point) {
+                       break;
+               }
+               if (events[i].t == backdate_point && (events[i].type == "in" || events[i].type == "out")) {
+                       delete_event(i);
+               } else {
+                       ++i;
+               }
+       }
+
+       // Finally make the subs we need.
+       set<int> old_team = get_team_at(backdate_point);
+       for (int player_id : old_team) {
+               if (!new_team.count(player_id)) {
+                       insert_event(backdate_point, player_id, "out");
+               }
+       }
+       for (int player_id : new_team) {
+               if (!old_team.count(player_id)) {
+                       insert_event(backdate_point, player_id, "in");
+               }
+       }
+}