Placeholder boost effect

src/dehacked.c

@@ -6249,6 +6249,16 @@ static const char *const STATE_LIST[] = { // array length left dynamic for sanit
 
 	// Thunder Shield Burst
 
+	// Sneaker boost effect
+	"S_BOOSTFLAME",
+	"S_BOOSTSMOKESPAWNER",
+	"S_BOOSTSMOKE1",
+	"S_BOOSTSMOKE2",
+	"S_BOOSTSMOKE3",
+	"S_BOOSTSMOKE4",
+	"S_BOOSTSMOKE5",
+	"S_BOOSTSMOKE6",
+
 	// Sneaker Fire Trail
 	"S_KARTFIRE1",
 	"S_KARTFIRE2",
@@ -7209,6 +7219,8 @@ static const char *const MOBJTYPE_LIST[] = {  // array length left dynamic for s
 	"MT_RANDOMITEM",
 	"MT_RANDOMITEMPOP",
 
+	"MT_BOOSTFLAME",
+	"MT_BOOSTSMOKE",
 	"MT_SNEAKERTRAIL",
 	"MT_SPARKLETRAIL",
 	"MT_INVULNFLASH",

src/info.c

@@ -55,12 +55,12 @@ char sprnames[NUMSPRITES + 1][5] =
 	"GWLR","SRBA","SRBB","SRBC","SRBD","SRBE","SRBF","SRBG","SRBH","SRBI",
 	"SRBJ","SRBK","SRBL","SRBM","SRBN","SRBO",
 	//SRB2kart Sprites
-	"SPRG","BSPR","RNDM","RPOP","KFRE","KINV","KINF","WIPD","DRIF","DUST",
+	"SPRG","BSPR","RNDM","RPOP","BOST","BOSM","KFRE","KINV","KINF","WIPD",
-	"FITM","BANA","ORBN","JAWZ","SSMN","KRBM","BHOG","BHBM","BLIG","LIGH",
+	"DRIF","DUST","FITM","BANA","ORBN","JAWZ","SSMN","KRBM","BHOG","BHBM",
-	"THNS","SINK","SITR","KBLN","DEZL","POKE","AUDI","DECO","DOOD","SNES",
+	"BLIG","LIGH","THNS","SINK","SITR","KBLN","DEZL","POKE","AUDI","DECO",
-	"GBAS","SPRS","BUZB","CHOM","SACO","CRAB","SHAD","BRNG","BUMP","FLEN",
+	"DOOD","SNES","GBAS","SPRS","BUZB","CHOM","SACO","CRAB","SHAD","BRNG",
-	"CLAS","PSHW","ISTA","ISTB","ARRO","ITEM","ITMO","ITMI","ITMN","WANT",
+	"BUMP","FLEN","CLAS","PSHW","ISTA","ISTB","ARRO","ITEM","ITMO","ITMI",
-	"PBOM","RETI","VIEW"
+	"ITMN","WANT","PBOM","RETI","VIEW"
 };
 
 // Doesn't work with g++, needs actionf_p1 (don't modify this comment)
@@ -2578,6 +2578,16 @@ state_t states[NUMSTATES] =
 	{SPR_DUST, FF_TRANS20|2,  3, {NULL}, 0, 0, S_DRIFTDUST4}, // S_DRIFTDUST3
 	{SPR_DUST, FF_TRANS20|3,  3, {NULL}, 0, 0, S_NULL}, // S_DRIFTDUST4
 
+	{SPR_BOST, FF_FULLBRIGHT|FF_ANIMATE, TICRATE, {NULL}, 6, 1, S_BOOSTSMOKESPAWNER}, // S_BOOSTFLAME
+	{SPR_NULL, 0,                      TICRATE/2, {NULL}, 0, 0, S_NULL}, // S_BOOSTSMOKESPAWNER
+
+	{SPR_BOSM, FF_TRANS50, 3, {NULL}, 0, 0, S_BOOSTSMOKE2}, // S_BOOSTSMOKE1
+	{SPR_BOSM, FF_TRANS50|1, 3, {NULL}, 0, 0, S_BOOSTSMOKE3}, // S_BOOSTSMOKE2
+	{SPR_BOSM, FF_TRANS50|2, 3, {NULL}, 0, 0, S_BOOSTSMOKE4}, // S_BOOSTSMOKE3
+	{SPR_BOSM, FF_TRANS50|3, 3, {NULL}, 0, 0, S_BOOSTSMOKE5}, // S_BOOSTSMOKE4
+	{SPR_BOSM, FF_TRANS50|4, 3, {NULL}, 0, 0, S_BOOSTSMOKE6}, // S_BOOSTSMOKE5
+	{SPR_BOSM, FF_TRANS50|5, 3, {NULL}, 0, 0, S_NULL}, // S_BOOSTSMOKE6
+
 	{SPR_NULL, 0,               10, {NULL}, 0, 0, S_KARTFIRE2}, // S_KARTFIRE1
 	{SPR_KFRE, FF_FULLBRIGHT,    2, {NULL}, 0, 0, S_KARTFIRE3}, // S_KARTFIRE2
 	{SPR_KFRE, FF_FULLBRIGHT|1,  2, {NULL}, 0, 0, S_KARTFIRE4}, // S_KARTFIRE3
@@ -14390,6 +14400,60 @@ mobjinfo_t mobjinfo[NUMMOBJTYPES] =
 		S_NULL          // raisestate
 	},
 
+	{           // MT_BOOSTFLAME
+		-1,						// doomednum
+		S_BOOSTFLAME,	        // spawnstate
+		1000,					// spawnhealth
+		S_NULL,					// seestate
+		sfx_None,				// seesound
+		8,						// reactiontime
+		sfx_None,				// attacksound
+		S_NULL,					// painstate
+		0,						// painchance
+		sfx_None,				// painsound
+		S_NULL,					// meleestate
+		S_NULL,					// missilestate
+		S_NULL,					// deathstate
+		S_NULL,					// xdeathstate
+		sfx_None,				// deathsound
+		8,						// speed
+		8*FRACUNIT,				// radius
+		8*FRACUNIT,				// height
+		1,						// display offset
+		100,					// mass
+		0,						// damage
+		sfx_None,				// activesound
+		MF_NOBLOCKMAP|MF_NOCLIP|MF_NOCLIPHEIGHT|MF_NOGRAVITY, // flags
+		S_NULL					// raisestate
+	},
+
+	{           // MT_BOOSTSMOKE
+		-1,						// doomednum
+		S_BOOSTSMOKE1,	        // spawnstate
+		1000,					// spawnhealth
+		S_NULL,					// seestate
+		sfx_None,				// seesound
+		8,						// reactiontime
+		sfx_None,				// attacksound
+		S_NULL,					// painstate
+		0,						// painchance
+		sfx_None,				// painsound
+		S_NULL,					// meleestate
+		S_NULL,					// missilestate
+		S_NULL,					// deathstate
+		S_NULL,					// xdeathstate
+		sfx_None,				// deathsound
+		8,						// speed
+		8*FRACUNIT,				// radius
+		8*FRACUNIT,				// height
+		1,						// display offset
+		100,					// mass
+		0,						// damage
+		sfx_None,				// activesound
+		MF_NOBLOCKMAP|MF_NOCLIPHEIGHT|MF_NOGRAVITY|MF_SCENERY, // flags
+		S_NULL					// raisestate
+	},
+
 	{           // MT_SNEAKERTRAIL
 		-1,             // doomednum
 		S_KARTFIRE1,    // spawnstate

src/info.h

@@ -582,6 +582,8 @@ typedef enum sprite
 
 	SPR_RNDM, // Random Item Box
 	SPR_RPOP, // Random Item Box Pop
+	SPR_BOST, // Sneaker booster flame
+	SPR_BOSM, // Sneaker booster smoke
 	SPR_KFRE, // Sneaker fire trail
 	SPR_KINV, // Invincibility sparkle trail
 	SPR_KINF, // Invincibility flash
@@ -3094,6 +3096,16 @@ typedef enum state
 
 	// Magnet Burst
 
+	// Sneaker boost effect
+	S_BOOSTFLAME,
+	S_BOOSTSMOKESPAWNER,
+	S_BOOSTSMOKE1,
+	S_BOOSTSMOKE2,
+	S_BOOSTSMOKE3,
+	S_BOOSTSMOKE4,
+	S_BOOSTSMOKE5,
+	S_BOOSTSMOKE6,
+
 	// Sneaker Fire Trail
 	S_KARTFIRE1,
 	S_KARTFIRE2,
@@ -4071,6 +4083,8 @@ typedef enum mobj_type
 	MT_RANDOMITEM,
 	MT_RANDOMITEMPOP,
 
+	MT_BOOSTFLAME,
+	MT_BOOSTSMOKE,
 	MT_SNEAKERTRAIL,
 	MT_SPARKLETRAIL,
 	MT_INVULNFLASH,

src/k_kart.c

@@ -2689,6 +2689,14 @@ void K_DoSneaker(player_t *player, boolean doPFlag)
 	if (!player->kartstuff[k_floorboost] || player->kartstuff[k_floorboost] == 3)
 		S_StartSound(player->mo, sfx_cdfm01);
 
+	if (!player->kartstuff[k_sneakertimer])
+	{
+		mobj_t *overlay = P_SpawnMobj(player->mo->x, player->mo->y, player->mo->z, MT_BOOSTFLAME);
+		P_SetTarget(&overlay->target, player->mo);
+		overlay->destscale = player->mo->scale;
+		P_SetScale(overlay, player->mo->scale);
+	}
+
 	player->kartstuff[k_sneakertimer] = sneakertime;
 
 	if (doPFlag)

src/p_mobj.c

@@ -8229,6 +8229,39 @@ void P_MobjThinker(mobj_t *mobj)
 				S_StartSound(mobj, sfx_prloop);
 			mobj->health--;
 			break;
+		case MT_BOOSTFLAME:
+			if (!mobj->target || !mobj->target->health)
+			{
+				P_RemoveMobj(mobj);
+				return;
+			}
+
+			P_TeleportMove(mobj, mobj->target->x + P_ReturnThrustX(mobj, mobj->target->angle+ANGLE_180, mobj->target->radius),
+				mobj->target->y + P_ReturnThrustY(mobj, mobj->target->angle+ANGLE_180, mobj->target->radius), mobj->target->z);
+			mobj->angle = mobj->target->angle;
+			P_SetScale(mobj, mobj->target->scale);
+
+			if (mobj->target->player)
+			{
+				if (mobj->target->player->kartstuff[k_sneakertimer] > mobj->movecount)
+					P_SetMobjState(mobj, S_BOOSTFLAME);
+				mobj->movecount = mobj->target->player->kartstuff[k_sneakertimer];
+			}
+
+			if (mobj->state == &states[S_BOOSTSMOKESPAWNER])
+			{
+				mobj_t *smoke = P_SpawnMobj(mobj->x, mobj->y, mobj->z+(8<<FRACBITS), MT_BOOSTSMOKE);
+
+				P_SetScale(smoke, mobj->target->scale/2);
+				smoke->destscale = 3*mobj->target->scale/2;
+
+				smoke->momx = mobj->target->momx/2;
+				smoke->momy = mobj->target->momy/2;
+				smoke->momz = mobj->target->momz/2;
+
+				P_Thrust(smoke, mobj->target->angle+FixedAngle(P_RandomRange(135, 225)<<FRACBITS), P_RandomRange(0, 8) * mapheaderinfo[gamemap-1]->mobj_scale);
+			}
+			break;
 		case MT_SPARKLETRAIL:
 			if (!mobj->target)
 			{