Change seen_context from strings to enums, slightly untangle it.

It's still a terrible mess.  I didn't manage to understand it well enough
so all[1] functionality is preserved, at the cost of clarity.  I unified
some values that are functionally identical, but not yet all.

[1]. The context is reported only as a number in crash dumps, a minor
regression but 1. saves speed, 2. it'd be a matter of copying the enum
names if someone actually needs this.

1 files changed, 7 insertions, 7 deletions

diff --git a/crawl-ref/source/delay.h b/crawl-ref/source/delay.h
index 8f0cacb266..adf2830ebb 100644
--- a/crawl-ref/source/delay.h
+++ b/crawl-ref/source/delay.h
@@ -24,30 +24,30 @@ struct activity_interrupt_data
 {
     activity_interrupt_payload_type apt;
     const void *data;
-    std::string context;
+    seen_context_type context;
 
     activity_interrupt_data()
-        : apt(AIP_NONE), data(NULL), context()
+        : apt(AIP_NONE), data(NULL), context(SC_NONE)
     {
     }
     activity_interrupt_data(const int *i)
-        : apt(AIP_INT), data(i), context()
+        : apt(AIP_INT), data(i), context(SC_NONE)
     {
     }
     activity_interrupt_data(const char *s)
-        : apt(AIP_STRING), data(s), context()
+        : apt(AIP_STRING), data(s), context(SC_NONE)
     {
     }
     activity_interrupt_data(const std::string &s)
-        : apt(AIP_STRING), data(s.c_str()), context()
+        : apt(AIP_STRING), data(s.c_str()), context(SC_NONE)
     {
     }
-    activity_interrupt_data(const monster* m, const std::string &ctx = "")
+    activity_interrupt_data(const monster* m, seen_context_type ctx = SC_NONE)
         : apt(AIP_MONSTER), data(m), context(ctx)
     {
     }
     activity_interrupt_data(const ait_hp_loss *ahl)
-        : apt(AIP_HP_LOSS), data(ahl), context()
+        : apt(AIP_HP_LOSS), data(ahl), context(SC_NONE)
     {
     }
     activity_interrupt_data(const activity_interrupt_data &a)