Negative edge Overdrive

src/d_player.h

@@ -1038,6 +1038,7 @@ struct player_t
 	UINT16 overdrive;
 	UINT16 overshield;
 	fixed_t overdrivepower;
+	UINT8 overdriveready;
 
 	UINT8 itemflags; 	// holds IF_ flags (see itemflags_t)
 

src/k_kart.c

@@ -4125,6 +4125,15 @@ boolean K_Overdrive(player_t *player)
 	if (player->amps == 0)
 		return false;
 
+	if (player->cmd.buttons & BT_ATTACK)
+	{
+		player->overdriveready = OVERDRIVE_STARTUP + 2; // Activates on 1, decremented BEFORE we call this again
+		return false;
+	}
+
+	if (player->overdriveready > 1)
+		return false;
+
 	K_SpawnDriftBoostExplosion(player, 3);
 	K_SpawnDriftElectricSparks(player, player->skincolor, true);
 	S_StartSound(player->mo, sfx_cdfm35);
@@ -4135,6 +4144,7 @@ boolean K_Overdrive(player_t *player)
 	player->overdrivepower = FRACUNIT;
 
 	player->amps = 0;
+	player->overdriveready = 0;
 
 	return true;
 }
@@ -9183,6 +9193,17 @@ void K_KartPlayerThink(player_t *player, ticcmd_t *cmd)
 		player->wavedashboost--;
 	}
 
+	if (player->overdriveready)
+	{
+		if (player->amps == 0 || player->rings > 0)
+			player->overdriveready = 0;
+		else
+		{
+			player->overdriveready--;
+			K_Overdrive(player);
+		}
+	}
+
 	if (player->overdrive > 0 && onground == true)
 	{
 		player->overdrive--;

src/k_kart.h

@@ -50,6 +50,8 @@ Make sure this matches the actual number of states
 #define MINCOMBOFLOAT (mapobjectscale*1)
 #define MAXCOMBOTIME (TICRATE*4)
 
+#define OVERDRIVE_STARTUP (0)
+
 #define AMPLEVEL (30)
 
 #define FLAMESHIELD_MAX (120)

src/lua_playerlib.c

@@ -374,6 +374,8 @@ static int player_get(lua_State *L)
 		lua_pushinteger(L, plr->wavedashpower);
 	else if (fastcmp(field,"overdrivepower"))
 		lua_pushinteger(L, plr->overdrivepower);
+	else if (fastcmp(field,"overdriveready"))
+		lua_pushinteger(L, plr->overdriveready);
 	else if (fastcmp(field,"speedpunt"))
 		lua_pushinteger(L, plr->speedpunt);
 	else if (fastcmp(field,"trickcharge"))
@@ -950,6 +952,8 @@ static int player_set(lua_State *L)
 		plr->wavedashpower = luaL_checkinteger(L, 3);
 	else if (fastcmp(field,"overdrivepower"))
 		plr->overdrivepower = luaL_checkinteger(L, 3);
+	else if (fastcmp(field,"overdriveready"))
+		plr->overdriveready = luaL_checkinteger(L, 3);
 	else if (fastcmp(field,"speedpunt"))
 		plr->speedpunt = luaL_checkinteger(L, 3);
 	else if (fastcmp(field,"trickcharge"))

src/objects/amps.c

@@ -151,12 +151,12 @@ void Obj_AmpBodyThink (mobj_t *amps)
         amps->angle = amps->target->angle;
         amps->renderflags |= RF_ADD|RF_FULLBRIGHT;
 
-        if (player->overdrive)
+        if (player->overdrive || player->overdriveready)
             amps->renderflags &= ~RF_DONTDRAW;
         else
             amps->renderflags |= RF_DONTDRAW;
 
-        if (player->overdrive < 35 && player->overdrive % 2)
+        if ((player->overdrive < 35 && player->overdrive % 2) || (player->overdriveready && leveltime % 2))
             amps->renderflags |= RF_DONTDRAW;
     }
 }

src/p_saveg.c

@@ -587,6 +587,7 @@ static void P_NetArchivePlayers(savebuffer_t *save)
 		WRITEUINT16(save->p, players[i].overshield);
 		WRITEFIXED(save->p, players[i].wavedashpower);
 		WRITEFIXED(save->p, players[i].overdrivepower);
+		WRITEUINT8(save->p, players[i].overdriveready);
 		WRITEUINT16(save->p, players[i].speedpunt);
 		WRITEUINT16(save->p, players[i].trickcharge);
 
@@ -1201,6 +1202,7 @@ static void P_NetUnArchivePlayers(savebuffer_t *save)
 		players[i].overshield = READUINT16(save->p);
 		players[i].wavedashpower = READFIXED(save->p);
 		players[i].overdrivepower = READFIXED(save->p);
+		players[i].overdriveready = READUINT8(save->p);
 		players[i].speedpunt = READUINT16(save->p);
 		players[i].trickcharge = READUINT16(save->p);