Permit emblem pickups that take on the visage of a Follower

- If Global-type map emblem has GE_FOLLOWER, attempt to take on the appearance of the follower specified by var2.
    - Unlike MT_RANDOMAUDIENCE, this picks whether the object should be floating or hopping based on the specified mode of the source Follower.
    - Always chooses to face the nearest player.
- Rearrange some properties affected by Obj_Audience/audience.c to not conflict with MT_EMBLEM

src/deh_tables.c

@@ -6395,6 +6395,7 @@ struct int_const_s const INT_CONST[] = {
 	// Global emblem var flags
 	{"GE_NOTMEDAL", GE_NOTMEDAL},
 	{"GE_TIMED", GE_TIMED},
+	{"GE_FOLLOWER", GE_FOLLOWER},
 
 	// Map emblem var flags
 	{"ME_ENCORE",ME_ENCORE},

src/m_cond.h

@@ -132,6 +132,7 @@ struct conditionset_t
 // Global emblem flags
 #define GE_NOTMEDAL		1	// Doesn't count towards number of medals
 #define GE_TIMED		2	// Disappears after var time
+#define GE_FOLLOWER		4	// Takes on the appearance of a Follower in (string)var2
 
 // Map emblem flags
 #define ME_ENCORE		1	// Achieve in Encore

src/objects/audience.c

@@ -10,10 +10,13 @@
 #include "../r_main.h" // R_PointToAngle2, R_PointToDist2
 #include "../z_zone.h" // Z_StrDup/Z_Free
 
+// The following cannot be used due to conflicts with MT_EMBLEM.
+//#define audience_emblem_reserved_1(o) ((o)->reactiontime)
+
 #define audience_mainstate(o) ((o)->cvmem)
 
-#define audience_bobamp(o) ((o)->cusval)
+#define audience_bobamp(o) ((o)->movefactor)
-#define audience_bobspeed(o) ((o)->reactiontime)
+#define audience_bobspeed(o) ((o)->cusval)
 
 #define audience_animoffset(o) ((o)->threshold)
 
@@ -231,17 +234,25 @@ Obj_AudienceThink
 
 	if (mobj->flags & MF_NOGRAVITY)
 	{
-		// This horrible calculation was inherited from k_follower.c, with only newlines (and a FRACUNIT offset) added
+		// This horrible calculation was inherited from k_follower.c
 		mobj->sprzoff = FixedMul(audience_bobamp(mobj),
-			FRACUNIT + FINESINE(((
+			FINESINE(((
 				FixedMul(4 * M_TAU_FIXED, audience_bobspeed(mobj))
 				* (leveltime + audience_animoffset(mobj))
 			) >> ANGLETOFINESHIFT) & FINEMASK));
 
-		// Gravity
+		// Offset to not go through floor...
-		if (mobj->flags2 & MF2_OBJECTFLIP)
+		if (mobj->type == MT_EMBLEM)
 		{
-			mobj->sprzoff = -mobj->sprzoff;
+			; // ...unless it's important to keep a centered hitbox
+		}
+		else if (mobj->flags2 & MF2_OBJECTFLIP)
+		{
+			mobj->sprzoff -= audience_bobamp(mobj);
+		}
+		else
+		{
+			mobj->sprzoff += audience_bobamp(mobj);
 		}
 	}
 	else if (audience_animoffset(mobj) > 0)

src/p_mobj.c

@@ -40,6 +40,7 @@
 #include "k_kart.h"
 #include "k_battle.h"
 #include "k_color.h"
+#include "k_follower.h"
 #include "k_respawn.h"
 #include "k_bot.h"
 #include "k_terrain.h"
@@ -7102,6 +7103,13 @@ static boolean P_MobjRegularThink(mobj_t *mobj)
 	{
 		INT32 trans = 0;
 
+		if (mobj->flags2 & MF2_STRONGBOX)
+		{
+			Obj_AudienceThink(mobj, true);
+			if (P_MobjWasRemoved(mobj))
+				return false;
+		}
+
 		mobj->frame &= ~FF_TRANSMASK;
 		mobj->renderflags &= ~RF_TRANSMASK;
 
@@ -12276,6 +12284,44 @@ static boolean P_SetupEmblem(mapthing_t *mthing, mobj_t *mobj)
 		mobj->reactiontime = emblemlocations[j].var;
 	}
 
+	if (emblemlocations[j].flags & GE_FOLLOWER)
+	{
+		INT32 followerpick;
+		char testname[SKINNAMESIZE+1];
+		size_t i;
+
+		// match deh_soc readfollower()
+		for (i = 0; emblemlocations[j].stringVar2[i]; i++)
+		{
+			testname[i] = emblemlocations[j].stringVar2[i];
+			if (emblemlocations[j].stringVar2[i] == '_')
+				testname[i] = ' ';
+		}
+		testname[i] = '\0';
+		followerpick = K_FollowerAvailable(testname);
+
+		if (followerpick == -1)
+		{
+			CONS_Alert(CONS_WARNING, "P_SetupEmblem: Follower \"%s\" on emblem for map %d with tag %d not found!\n", emblemlocations[j].stringVar2, gamemap, tagnum);
+			return false;
+		}
+
+		// Set up data
+		Obj_AudienceInit(mobj, NULL, followerpick);
+		if (P_MobjWasRemoved(mobj))
+		{
+			CONS_Alert(CONS_WARNING, "P_SetupEmblem: Follower \"%s\" causes emblem for map %d with tag %d to be removed immediately!\n", emblemlocations[j].stringVar2, gamemap, tagnum);
+			return false;
+		}
+
+		// Signal that you are to behave like a follower
+		mobj->flags2 |= MF2_STRONGBOX;
+		if (followers[followerpick].mode == FOLLOWERMODE_GROUND)
+		{
+			mobj->flags &= ~(MF_NOGRAVITY|MF_NOCLIPHEIGHT);
+		}
+	}
+
 	return true;
 }