UCRP_CHASEDBYSPB

True if the player has PF_RINGLOCK (SPB on the HUD). Probably the cleanest implementation.
Stacks well with "finish in 1st".

src/deh_soc.c

@@ -2900,7 +2900,8 @@ static void readcondition(UINT16 set, UINT32 id, char *word2)
 	||        (++offset && fastcmp(params[0], "FINISHPERFECT"))
 	||        (++offset && fastcmp(params[0], "FINISHALLPRISONS"))
 	||        (++offset && fastcmp(params[0], "NOCONTEST"))
-	||        (++offset && fastcmp(params[0], "SMASHUFO")))
+	||        (++offset && fastcmp(params[0], "SMASHUFO"))
+	||        (++offset && fastcmp(params[0], "CHASEDBYSPB")))
 	{
 		//PARAMCHECK(1);
 		ty = UCRP_FINISHCOOL + offset;

src/m_cond.c

@@ -1513,6 +1513,11 @@ boolean M_CheckCondition(condition_t *cn, player_t *player)
 					|| specialstageinfo.ufo->health <= 1
 				)
 			);
+		case UCRP_CHASEDBYSPB:
+			// The PERFECT implementation would check spbplace, iterate over trackercap, etc.
+			// But the game already has this handy-dandy SPB signal for us...
+			// It's only MAYBE invalid in modded context. And mods can already cheat...
+			return ((player->pflags & PF_RINGLOCK) == PF_RINGLOCK);
 
 		case UCRP_MAKERETIRE:
 		{
@@ -2387,6 +2392,9 @@ static const char *M_GetConditionString(condition_t *cn)
 				cn->requirement
 			);
 
+		case UCRP_CHASEDBYSPB:
+			return "while chased by a Self-Propelled Bomb";
+
 		case UCRP_TRIGGER:
 			return "do something special";
 

src/m_cond.h

@@ -97,7 +97,9 @@ typedef enum
 	UCRP_FINISHPERFECT, // Finish a perfect race
 	UCRP_FINISHALLPRISONS, // Break all prisons
 	UCRP_NOCONTEST, // No Contest
+
 	UCRP_SMASHUFO, // Smash the UFO Catcher
+	UCRP_CHASEDBYSPB, // Chased by SPB
 
 	UCRP_MAKERETIRE, // Make another player of [skin] No Contest