Add Barrier Power-Up

- Guard is always up, not activated by e-brake or spheres
- Guard can still be broken by player contact
- No instawhip cooldown from Guard being up
- No sphere loss while Guard is up
- Guard appears at max size

src/d_player.h

@@ -464,6 +464,7 @@ typedef struct {
 // player_t struct for power-ups
 struct powerupvars_t {
 	UINT16 superTimer;
+	UINT16 barrierTimer;
 	mobj_t *flickyController;
 };
 

src/k_kart.c

@@ -45,6 +45,7 @@
 #include "k_specialstage.h"
 #include "k_roulette.h"
 #include "k_podium.h"
+#include "k_powerup.h"
 
 // SOME IMPORTANT VARIABLES DEFINED IN DOOMDEF.H:
 // gamespeed is cc (0 for easy, 1 for normal, 2 for hard)
@@ -7997,7 +7998,7 @@ void K_KartPlayerThink(player_t *player, ticcmd_t *cmd)
 				player->spheredigestion = spheredigestion;
 			}
 
-			if (K_PlayerGuard(player) && (player->ebrakefor%6 == 0))
+			if (K_PlayerGuard(player) && !K_PowerUpRemaining(player, POWERUP_BARRIER) && (player->ebrakefor%6 == 0))
 				player->spheres--;
 		}
 		else
@@ -8090,6 +8091,11 @@ void K_KartPlayerThink(player_t *player, ticcmd_t *cmd)
 		}
 	}
 
+	if (player->powerup.barrierTimer > 0)
+	{
+		player->powerup.barrierTimer--;
+	}
+
 	if (player->powerup.superTimer > 0)
 	{
 		player->powerup.superTimer--;
@@ -8339,7 +8345,7 @@ void K_KartPlayerThink(player_t *player, ticcmd_t *cmd)
 		player->pflags &= ~PF_DRIFTINPUT;
 	}
 
-	if (K_PlayerGuard(player))
+	if (K_PlayerGuard(player) && !K_PowerUpRemaining(player, POWERUP_BARRIER))
 		player->instaShieldCooldown = max(player->instaShieldCooldown, INSTAWHIP_DROPGUARD);
 
 	// Roulette Code
@@ -10062,7 +10068,17 @@ boolean K_PlayerEBrake(player_t *player)
 
 boolean K_PlayerGuard(player_t *player)
 {
-	return (K_PlayerEBrake(player) && player->spheres > 0 && player->guardCooldown == 0);
+	if (player->guardCooldown != 0)
+	{
+		return false;
+	}
+
+	if (K_PowerUpRemaining(player, POWERUP_BARRIER))
+	{
+		return true;
+	}
+
+	return (K_PlayerEBrake(player) && player->spheres > 0);
 }
 
 SINT8 K_Sliptiding(player_t *player)
@@ -10849,7 +10865,12 @@ void K_MoveKartPlayer(player_t *player, boolean onground)
 					else
 					{
 						player->instaShieldCooldown = INSTAWHIP_COOLDOWN;
-						player->guardCooldown = INSTAWHIP_COOLDOWN;
+
+						if (!K_PowerUpRemaining(player, POWERUP_BARRIER))
+						{
+							player->guardCooldown = INSTAWHIP_COOLDOWN;
+						}
+
 						S_StartSound(player->mo, sfx_iwhp);
 						mobj_t *whip = P_SpawnMobj(player->mo->x, player->mo->y, player->mo->z, MT_INSTAWHIP);
 						P_SetTarget(&player->whip, whip);

src/k_powerup.cpp

@@ -11,6 +11,9 @@ tic_t K_PowerUpRemaining(const player_t* player, kartitems_t powerup)
 	case POWERUP_SMONITOR:
 		return player->powerup.superTimer;
 
+	case POWERUP_BARRIER:
+		return player->powerup.barrierTimer;
+
 	case POWERUP_SUPERFLICKY:
 		return Obj_SuperFlickySwarmTime(player->powerup.flickyController);
 
@@ -28,6 +31,10 @@ void K_GivePowerUp(player_t* player, kartitems_t powerup, tic_t time)
 		player->powerup.superTimer += time;
 		break;
 
+	case POWERUP_BARRIER:
+		player->powerup.barrierTimer += time;
+		break;
+
 	case POWERUP_SUPERFLICKY:
 		if (K_PowerUpRemaining(player, POWERUP_SUPERFLICKY))
 		{
@@ -58,6 +65,7 @@ void K_DropPowerUps(player_t* player)
 	};
 
 	simple_drop(POWERUP_SMONITOR, player->powerup.superTimer);
+	simple_drop(POWERUP_BARRIER, player->powerup.barrierTimer);
 
 	if (K_PowerUpRemaining(player, POWERUP_SUPERFLICKY))
 	{

src/p_saveg.c

@@ -637,6 +637,7 @@ static void P_NetArchivePlayers(savebuffer_t *save)
 
 		// powerupvars_t
 		WRITEUINT16(save->p, players[i].powerup.superTimer);
+		WRITEUINT16(save->p, players[i].powerup.barrierTimer);
 	}
 }
 
@@ -1064,6 +1065,7 @@ static void P_NetUnArchivePlayers(savebuffer_t *save)
 
 		// powerupvars_t
 		players[i].powerup.superTimer = READUINT16(save->p);
+		players[i].powerup.barrierTimer = READUINT16(save->p);
 
 		//players[i].viewheight = P_GetPlayerViewHeight(players[i]); // scale cannot be factored in at this point
 	}