Add separate boost sound for start boost

Allows us to set it to be singular, stopping really loud start boosts with many players

src/k_kart.c

@@ -1303,7 +1303,7 @@ void K_LakituChecker(player_t *player)
 			player->kartstuff[k_lakitu]--;
 			// Quick! You only have three tics to boost!
 			if (cmd->buttons & BT_ACCELERATE)
-				K_DoMushroom(player, true);
+				K_DoMushroom(player, true, false);
 		}
 	}
 }
@@ -2228,10 +2228,14 @@ static void K_DoBooSteal(player_t *player)
 	}
 }
 
-void K_DoMushroom(player_t *player, boolean doPFlag)
+void K_DoMushroom(player_t *player, boolean doPFlag, boolean startboost)
 {
+	sfxenum_t boostsound = sfx_mush;
+	if (startboost)
+		boostsound = sfx_sboost;
+
 	if (!player->kartstuff[k_floorboost] || player->kartstuff[k_floorboost] == 3)
-		S_StartSound(player->mo, sfx_mush);
+		S_StartSound(player->mo, boostsound);
 
 	player->kartstuff[k_mushroomtimer] = mushroomtime;
 
@@ -2624,14 +2628,14 @@ void K_MoveKartPlayer(player_t *player, boolean onground)
 		if (ATTACK_IS_DOWN && !HOLDING_ITEM && onground && player->kartstuff[k_goldshroom] == 1
 			&& player->kartstuff[k_goldshroomtimer] == 0 && NO_BOO)
 		{
-			K_DoMushroom(player, true);
+			K_DoMushroom(player, true, false);
 			player->kartstuff[k_goldshroomtimer] = itemtime;
 			player->kartstuff[k_goldshroom] = 0;
 		}
 		// GoldenMushroom power
 		else if (ATTACK_IS_DOWN && player->kartstuff[k_goldshroomtimer] > 1 && onground && NO_BOO)
 		{
-			K_DoMushroom(player, true);
+			K_DoMushroom(player, true, false);
 			//player->kartstuff[k_goldshroomtimer] -= 10;
 			//if (player->kartstuff[k_goldshroomtimer] < 1)
 			//	player->kartstuff[k_goldshroomtimer] = 1;
@@ -2639,19 +2643,19 @@ void K_MoveKartPlayer(player_t *player, boolean onground)
 		// TripleMushroom power
 		else if (ATTACK_IS_DOWN && !HOLDING_ITEM && player->kartstuff[k_mushroom] == 4 && onground && NO_BOO)
 		{
-			K_DoMushroom(player, true);
+			K_DoMushroom(player, true, false);
 			player->kartstuff[k_mushroom] = 2;
 		}
 		// DoubleMushroom power
 		else if (ATTACK_IS_DOWN && !HOLDING_ITEM && player->kartstuff[k_mushroom] == 2 && onground && NO_BOO)
 		{
-			K_DoMushroom(player, true);
+			K_DoMushroom(player, true, false);
 			player->kartstuff[k_mushroom] = 1;
 		}
 		// Mushroom power
 		else if (ATTACK_IS_DOWN && !HOLDING_ITEM && player->kartstuff[k_mushroom] == 1 && onground && NO_BOO)
 		{
-			K_DoMushroom(player, true);
+			K_DoMushroom(player, true, false);
 			player->kartstuff[k_mushroom] = 0;
 		}
 		// Star power
@@ -3105,7 +3109,7 @@ void K_MoveKartPlayer(player_t *player, boolean onground)
 		// Get an instant boost!
 		if (player->kartstuff[k_boostcharge] >= 7 && player->kartstuff[k_boostcharge] <= 10)
 		{
-			K_DoMushroom(player, false);
+			K_DoMushroom(player, false, true);
 		}
 		// You overcharged your engine? Those things are expensive!!!
 		if (player->kartstuff[k_boostcharge] > 10)

src/k_kart.h

@@ -22,7 +22,7 @@ void K_SquishPlayer(player_t *player, mobj_t *source);
 void K_ExplodePlayer(player_t *player, mobj_t *source);
 void K_SpawnKartExplosion(fixed_t x, fixed_t y, fixed_t z, fixed_t radius, INT32 number, mobjtype_t type, angle_t rotangle, boolean spawncenter, boolean ghostit);
 void K_SpawnDriftTrail(player_t *player);
-void K_DoMushroom(player_t *player, boolean doPFlag);
+void K_DoMushroom(player_t *player, boolean doPFlag, boolean startboost);
 INT16 K_GetKartTurnValue(player_t *player, INT16 turnvalue);
 void K_MomentumToFacing(player_t *player);
 fixed_t K_GetKartSpeed(player_t *player, boolean doboostpower);

src/p_spec.c

@@ -3934,7 +3934,7 @@ DoneSection2:
 				player->kartstuff[k_floorboost] = 3;
 			else
 				player->kartstuff[k_floorboost] = 2;
-			K_DoMushroom(player, false);
+			K_DoMushroom(player, false, false);
 			break;
 
 		case 7: // SRB2kart 190117 - Oil Slick

src/sounds.c

@@ -474,6 +474,7 @@ sfxinfo_t S_sfx[NUMSFX] =
   {"kart2",  false,  48, 16, -1, NULL, 0,        -1,  -1, LUMPERROR},
   {"kart3",  false,  48, 16, -1, NULL, 0,        -1,  -1, LUMPERROR},
   {"mlap",    true, 127,  0, -1, NULL, 0,        -1,  -1, LUMPERROR},
+  {"sboost",  true,  90,  0, -1, NULL, 0,        -1,  -1, LUMPERROR},
   {"mush",   false,  90,  0, -1, NULL, 0,        -1,  -1, LUMPERROR},
   {"star",   false, 140, 16, -1, NULL, 0,        -1,  -1, LUMPERROR},
   {"mega",   false, 140, 16, -1, NULL, 0,        -1,  -1, LUMPERROR},

src/sounds.h

@@ -545,6 +545,7 @@ typedef enum
 	sfx_kart2,
 	sfx_kart3,
 	sfx_mlap,
+	sfx_sboost,
 	sfx_mush,
 	sfx_star,
 	sfx_mega,