CON: Add EVENT_DISPLAYROOMSCAMERA and EVENT_DISPLAYSTART.

EVENT_DISPLAYROOMSCAMERA functions exactly like EVENT_DISPLAYROOMS, including RETURN values, but for the ud.camerasprite >= 0 case.
EVENT_DISPLAYSTART is executed immediately after the screen background is cleared and drawn. Ensure its RETURN value is zero, because it is currently not being used.

WARNING: Consult the devs before using EVENT_DISPLAYSTART. Its position in the display code sequence is not finalized.

git-svn-id: https://svn.eduke32.com/eduke32@5047 1a8010ca-5511-0410-912e-c29ae57300e0

polymer/eduke32/source/events_defs.h

@@ -108,6 +108,8 @@ enum GameEvent_t {
     EVENT_DISPLAYCURSOR,
     EVENT_DISPLAYLEVELSTATS,
     EVENT_DISPLAYCAMERAOSD,
+    EVENT_DISPLAYROOMSCAMERA,
+    EVENT_DISPLAYSTART,
 #ifdef LUNATIC
     EVENT_ANIMATEALLSPRITES,
 #endif

polymer/eduke32/source/game.c

@@ -4450,6 +4450,8 @@ void G_DrawRooms(int32_t snum, int32_t smoothratio)
         pub = 0;
     }
 
+    VM_OnEvent(EVENT_DISPLAYSTART, p->i, snum);
+
     if (ud.overhead_on == 2 || ud.show_help || (p->cursectnum == -1 && getrendermode() != REND_CLASSIC))
         return;
 
@@ -4459,7 +4461,7 @@ void G_DrawRooms(int32_t snum, int32_t smoothratio)
         setaspect_new();
     }
 
-    if (ud.pause_on || g_player[snum].ps->on_crane > -1)
+    if (ud.pause_on || p->on_crane > -1)
         smoothratio = 65536;
     else
         smoothratio = calc_smoothratio(totalclock, ototalclock);
@@ -4484,6 +4486,15 @@ void G_DrawRooms(int32_t snum, int32_t smoothratio)
 
         CAMERA(ang) = actor[ud.camerasprite].tempang +
             mulscale16(((s->ang+1024-actor[ud.camerasprite].tempang)&2047)-1024, smoothratio);
+
+        dont_draw = VM_OnEvent(EVENT_DISPLAYROOMSCAMERA, p->i, snum);
+
+        if (dont_draw != 1)  // event return values other than 0 and 1 are reserved
+        {
+            if (EDUKE32_PREDICT_FALSE(dont_draw != 0))
+                OSD_Printf(OSD_ERROR "ERROR: EVENT_DISPLAYROOMSCAMERA return value must be 0 or 1, "
+                           "other values are reserved.\n");
+
 #ifdef LEGACY_ROR
             G_SE40(smoothratio);
 #endif
@@ -4497,6 +4508,7 @@ void G_DrawRooms(int32_t snum, int32_t smoothratio)
             G_DoSpriteAnimations(s->x,s->y,CAMERA(ang),smoothratio);
             drawmasks();
         }
+    }
     else
     {
         int32_t j,fz,cz;
@@ -4737,10 +4749,9 @@ void G_DrawRooms(int32_t snum, int32_t smoothratio)
             break;
         }
 
-        dont_draw = 0;
         // NOTE: might be rendering off-screen here, so CON commands that draw stuff
         //  like showview must cope with that situation or bail out!
-        dont_draw = VM_OnEvent(EVENT_DISPLAYROOMS, g_player[screenpeek].ps->i, screenpeek);
+        dont_draw = VM_OnEvent(EVENT_DISPLAYROOMS, p->i, snum);
 
         CAMERA(horiz) = clamp(CAMERA(horiz), HORIZ_MIN, HORIZ_MAX);
 

polymer/eduke32/source/gamedef.c

@@ -673,6 +673,8 @@ const char *EventNames[MAXEVENTS] =
     "EVENT_DISPLAYCURSOR",
     "EVENT_DISPLAYLEVELSTATS",
     "EVENT_DISPLAYCAMERAOSD",
+    "EVENT_DISPLAYROOMSCAMERA",
+    "EVENT_DISPLAYSTART",
 #ifdef LUNATIC
     "EVENT_ANIMATEALLSPRITES",
 #endif

polymer/eduke32/source/lunatic/con_lang.lua

@@ -180,11 +180,13 @@ EVENT = {
     EVENT_DISPLAYCURSOR = 100,
     EVENT_DISPLAYLEVELSTATS = 101,
     EVENT_DISPLAYCAMERAOSD = 102,
+    EVENT_DISPLAYROOMSCAMERA = 103,
+    EVENT_DISPLAYSTART = 104,
 --    EVENT_ANIMATEALLSPRITES = previous+1,  -- internal
 -- KEEPINSYNC with MAXEVENTS below
 }
 
-MAXEVENTS = 103  -- KEEPINSYNC with above EVENT_* list
+MAXEVENTS = 105  -- KEEPINSYNC with above EVENT_* list
 
 -- NOTE: negated values are not exported to the ffi.C namespace or CON.
 -- See TWEAK_SFLAG below.