Allow bumpy road visual to be applied as a SSF as well

extras/udmf-spec.txt

@@ -233,6 +233,7 @@ BlanKart's namespace implements the following additional fields:
 		redpogospring = <bool>;				// true = players are bounced into the air by this sector.
 		yellowpogospring = <bool>;			// true = players are bounced into the air and then speedcapped by this sector.
 		walltransfer = <bool>;				// true = players are allowed to slide up walls from this sector.
+		bumpyroad = <bool>;					// true = players are visually tilted by this sector to simulate a bumpy road. Does not effect gameplay.
 
 		repeatspecial = <bool>;				// true = repeatable action.
 		continuousspecial = <bool>;			// true = action is executed every game tick.
@@ -318,3 +319,6 @@ BK 1.0: 11.03.2025
 
 BK 1.0 22.03.2026
 - Added more effects.
+
+BK 1.0 21.04.2026
+- Added bumpy road effect.

src/k_kart.c

@@ -12034,4 +12034,21 @@ void K_KartAttractHomingAttack(player_t *player)
 }
 #undef TargetThreshold
 
+// Visual effect for bumpy road sector.
+void K_KartPlayerBumpyRoad(player_t *player)
+{
+	if (player->speed > 4*mapobjectscale && abs(player->karttilt) < FRACUNIT/2)
+	{
+		fixed_t baseimpulse = 9*FRACUNIT * (player->karttiltmomentum ? intsign(player->karttiltmomentum) : 1);
+		fixed_t rate = CLAMP(FixedDiv(player->speed, K_GetKartSpeed(player, false, false)), 6*FRACUNIT/10, FRACUNIT);
+		if (abs(player->karttiltmomentum) < abs(baseimpulse))
+		{
+			player->karttilt = (FRACUNIT/2) * (player->karttiltmomentum ? intsign(player->karttiltmomentum) : 1);
+			player->karttiltmomentum = 0;
+			K_AddTiltImpulse(player, player->mo->height/2, baseimpulse);
+			S_StartSoundAtVolume(player->mo, sfx_s3k56, CLAMP((200*rate)/FRACUNIT, 0, 200));
+		}
+	}
+}
+
 //}

src/k_kart.h

@@ -442,6 +442,8 @@ void K_AddTiltImpulse(player_t *player, fixed_t distance, fixed_t force);
 
 void K_KartAttractHomingAttack(player_t *player);
 
+void K_KartPlayerBumpyRoad(player_t *player);
+
 #ifdef __cplusplus
 } // extern "C"
 #endif

src/k_terrain.c

@@ -633,17 +633,9 @@ void K_ProcessTerrainEffect(mobj_t *mo)
 		K_DoSneaker(player, SNEAKERTYPE_WATERPANEL);
 	}
 
-	if ((terrain->flags & TRF_BUMPY) && player->speed > 4*mapobjectscale && abs(player->karttilt) < FRACUNIT/2)
+	if (terrain->flags & TRF_BUMPY)
 	{
-		fixed_t baseimpulse = 9*FRACUNIT * (player->karttiltmomentum ? intsign(player->karttiltmomentum) : 1);
-		fixed_t rate = CLAMP(FixedDiv(player->speed, K_GetKartSpeed(player, false, false)), 6*FRACUNIT/10, FRACUNIT);
-		if (abs(player->karttiltmomentum) < abs(baseimpulse))
-		{
-			player->karttilt = (FRACUNIT/2) * (player->karttiltmomentum ? intsign(player->karttiltmomentum) : 1);
-			player->karttiltmomentum = 0;
-			K_AddTiltImpulse(player, mo->height/2, baseimpulse);
-			S_StartSoundAtVolume(mo, sfx_s3k56, CLAMP((200*rate)/FRACUNIT, 0, 200));
-		}
+		K_KartPlayerBumpyRoad(player);
 	}
 	
 	// Speed pad

src/p_setup.c

@@ -1941,6 +1941,8 @@ static void ParseTextmapSectorParameter(UINT32 i, const char *param, const char
 		sectors[i].specialflags |= SSF_GRAVITYOVERRIDE;
 	else if (fastcmp(param, "walltransfer") && fastcmp("true", val))
 		sectors[i].specialflags |= SSF_WALLTRANSFER;
+	else if (fastcmp(param, "bumpyroad") && fastcmp("true", val))
+		sectors[i].specialflags |= SSF_BUMPYROAD;
 	else if (fastcmp(param, "friction"))
 		sectors[i].friction = FLOAT_TO_FIXED(atof(val));
 	else if (fastcmp(param, "gravity"))
@@ -3164,6 +3166,8 @@ static void P_WriteTextmap(void)
 			fprintf(f, "gravityoverride = true;\n");
 		if (wsectors[i].specialflags & SSF_WALLTRANSFER)
 			fprintf(f, "walltransfer = true;\n");
+		if (wsectors[i].specialflags & SSF_BUMPYROAD)
+			fprintf(f, "bumpyroad = true;\n");
 		if (wsectors[i].friction != ORIG_FRICTION)
 			fprintf(f, "friction = %f;\n", FIXED_TO_FLOAT(wsectors[i].friction));
 		if (wsectors[i].gravity != FRACUNIT)

src/p_spec.c

@@ -5232,7 +5232,6 @@ static void P_ProcessPogoSpring(player_t *player, boolean isTouching, int type)
 
 static void P_ProcessBoostPanel(player_t *player, boolean isTouching, int type)
 {
-
 	if (player->mo->terrain && K_AffectingTerrainActive())
 	{
 		if (player->mo->terrain->flags & TRF_SNEAKERPANEL)
@@ -5248,7 +5247,6 @@ static void P_ProcessBoostPanel(player_t *player, boolean isTouching, int type)
 		}
 	}
 
-
 	if (isTouching)
 	{
 		if (!player->floorboost)
@@ -5360,6 +5358,20 @@ static void P_ProcessZoomTube(player_t *player, mtag_t sectag, boolean end)
 	player->speed = speed;
 }
 
+static void P_ProcessBumpyRoad(player_t *player, boolean isTouching)
+{
+	if (player->mo->terrain && (player->mo->terrain->flags & TRF_BUMPY))
+	{
+		// Don't double process bumpy roads.
+		return;
+	}
+
+	if (isTouching)
+	{
+		K_KartPlayerBumpyRoad(player);
+	}
+}
+
 static boolean P_SectorHasSpecial(sector_t *sec)
 {
 	if (sec->specialflags)
@@ -5433,6 +5445,8 @@ static void P_EvaluateSpecialFlags(player_t *player, sector_t *sector, sector_t
 			player->pflags |= PF_HITFINISHLINE;
 		}
 	}
+	if (sector->specialflags & SSF_BUMPYROAD)
+		P_ProcessBumpyRoad(player, isTouching);
 }
 
 static void P_EvaluateDamageType(player_t *player, sector_t *sector, boolean isTouching)

src/r_defs.h

@@ -398,6 +398,7 @@ typedef enum
 	SSF_NOPHYSICSCEILING = 1<<18,
 	SSF_GRAVITYOVERRIDE = 1<<19, // combine with MSF_GRAVITYFLIP
 	SSF_WALLTRANSFER = 1<<20,
+	SSF_BUMPYROAD = 1<<21,
 } sectorspecialflags_t;
 
 typedef enum