Toaster's friction code???

src/d_main.c

@@ -828,6 +828,8 @@ static void IdentifyVersion(void)
 	D_AddFile(va(pandf,srb2waddir,"AllKartSounds.wad"));
 	D_AddFile(va(pandf,srb2waddir,"KartTextures.wad"));
 	D_AddFile(va(pandf,srb2waddir,"KMFixes3.wad"));
+	D_AddFile(va(pandf,srb2waddir,"SNSAssets.wad"));
+	D_AddFile(va(pandf,srb2waddir,"k_SNSRainbowRoad.wad"));
 
 #if !defined (HAVE_SDL) || defined (HAVE_MIXER)
 	{

src/dehacked.c

@@ -1801,6 +1801,7 @@ static actionpointer_t actionpointers[] =
 	{{A_DualAction},           "A_DUALACTION"},
 	{{A_RemoteAction},         "A_REMOTEACTION"},
 	{{A_ToggleFlameJet},       "A_TOGGLEFLAMEJET"},
+	{{A_ItemPop},              "A_ITEMPOP"},       // SRB2kart
 	{{A_RedShellChase},        "A_REDSHELLCHASE"}, // SRB2kart
 	{{A_BobombExplode},        "A_BOBOMBEXPLODE"}, // SRB2kart
 	{{A_OrbitNights},          "A_ORBITNIGHTS"},

src/info.c

@@ -2557,6 +2557,7 @@ state_t states[NUMSTATES] =
 	{SPR_RNDM, 21, 3, {A_AttractChase}, 0, 0, S_RANDOMITEM23}, // S_RANDOMITEM22
 	{SPR_RNDM, 22, 3, {A_AttractChase}, 0, 0, S_RANDOMITEM24}, // S_RANDOMITEM23
 	{SPR_RNDM, 23, 3, {A_AttractChase}, 0, 0, S_RANDOMITEM1},  // S_RANDOMITEM24
+	{SPR_RNDM,  0, 1, {A_ItemPop},      0, 0, S_NULL},         // S_DEADRANDOMITEM
 
 	{SPR_SPRK, 0,  2, {NULL}, 0, 0, S_RANDOMITEMPOP2}, // S_RANDOMITEMPOP1
 	{SPR_SPRK, 1,  2, {NULL}, 0, 0, S_RANDOMITEMPOP3}, // S_RANDOMITEMPOP2
@@ -14048,7 +14049,7 @@ mobjinfo_t mobjinfo[NUMMOBJTYPES] =
 		sfx_None,       // painsound
 		S_NULL,         // meleestate
 		S_NULL,         // missilestate
-		S_RANDOMBOX3,   // deathstate
+		S_DEADRANDOMITEM, // deathstate
 		S_NULL,         // xdeathstate
 		sfx_pop,        // deathsound
 		64*FRACUNIT,    // speed
@@ -14139,7 +14140,7 @@ mobjinfo_t mobjinfo[NUMMOBJTYPES] =
 		16,             // mass
 		0,              // damage
 		sfx_None,       // activesound
-		MF_NOBLOCKMAP|MF_NOCLIP|MF_NOGRAVITY|MF_SCENERY, // flags
+		MF_NOBLOCKMAP|MF_NOCLIP|MF_NOCLIPHEIGHT|MF_NOGRAVITY|MF_SCENERY, // flags
 		S_NULL          // raisestate
 	},
 

src/info.h

@@ -163,6 +163,7 @@ void A_RandomStateRange();
 void A_DualAction();
 void A_RemoteAction();
 void A_ToggleFlameJet();
+void A_ItemPop(); // SRB2kart
 void A_RedShellChase(); // SRB2kart
 void A_BobombExplode(); // SRB2kart
 void A_OrbitNights();
@@ -3026,6 +3027,7 @@ typedef enum state
 	S_RANDOMITEM22,
 	S_RANDOMITEM23,
 	S_RANDOMITEM24,
+	S_DEADRANDOMITEM,
 
 	// Random Item Pop
 	S_RANDOMITEMPOP1,

src/k_kart.c

@@ -746,7 +746,7 @@ static void K_KartGetItemResult(player_t *player, fixed_t getitem, boolean retro
 	player->kartstuff[k_itemroulette] = 0; // Since we're done, clear the roulette number
 	
 	if (P_IsLocalPlayer(player))
-		S_StartSound(NULL, sfx_mkitemF);
+		S_StartSound(NULL, sfx_mkitmF);
 }
 
 /**	\brief	Item Roulette for Kart
@@ -783,7 +783,7 @@ static void K_KartItemRoulette(player_t *player, ticcmd_t *cmd)
 		
 	// This makes the roulette produce the random noises.
 	if ((player->kartstuff[k_itemroulette] % 3) == 1 && P_IsLocalPlayer(player))
-		S_StartSound(NULL,sfx_mkitem1 + ((player->kartstuff[k_itemroulette] / 3) % 8));
+		S_StartSound(NULL,sfx_mkitm1 + ((player->kartstuff[k_itemroulette] / 3) % 8));
 
 	// If the roulette finishes or the player presses BT_ATTACK, stop the roulette and calculate the item.
 	// I'm returning via the exact opposite, however, to forgo having another bracket embed. Same result either way, I think.
@@ -814,11 +814,16 @@ static void K_KartItemRoulette(player_t *player, ticcmd_t *cmd)
 		player->pflags |= PF_ATTACKDOWN;
 	
 	player->kartstuff[k_itemclose] = 0;	// Reset the item window closer.
+	player->kartstuff[k_itemroulette] = 0; // And the roulette is done!
 	
 	// Yes I know I'm defining variables half-way into the function, but they aren't needed until now :/
 	fixed_t prandom = P_RandomFixed();
 	fixed_t ppos = player->kartstuff[k_position] - 1;
 	
+	// Tiny catcher in case player position is unset.
+	if (ppos == 0)
+		ppos = 1;
+	
 	// Check the game type to differentiate odds.
 	//if (gametype == GT_RETRO)
 	//{

src/p_enemy.c

@@ -187,6 +187,7 @@ void A_RandomStateRange(mobj_t *actor);
 void A_DualAction(mobj_t *actor);
 void A_RemoteAction(mobj_t *actor);
 void A_ToggleFlameJet(mobj_t *actor);
+void A_ItemPop(mobj_t *actor);       // SRB2kart
 void A_RedShellChase(mobj_t *actor); // SRB2kart
 void A_BobombExplode(mobj_t *actor); // SRB2kart
 void A_OrbitNights(mobj_t *actor);
@@ -8073,7 +8074,70 @@ void A_ToggleFlameJet(mobj_t* actor)
 	}
 }
 
-//{ SRB2kart - A_RedShellChase and A_BobombExplode
+//{ SRB2kart - A_ItemPop, A_RedShellChase and A_BobombExplode
+void A_ItemPop(mobj_t *actor)
+{
+	mobj_t *remains;
+	mobjtype_t item = 0;
+
+	// de-solidify
+	P_UnsetThingPosition(actor);
+	actor->flags &= ~MF_SOLID;
+	actor->flags |= MF_NOCLIP;
+	P_SetThingPosition(actor);
+
+	remains = P_SpawnMobj(actor->x, actor->y, actor->z, MT_RANDOMITEMPOP);
+	remains->type = actor->type; // Transfer type information
+	P_UnsetThingPosition(remains);
+	if (sector_list)
+	{
+		P_DelSeclist(sector_list);
+		sector_list = NULL;
+	}
+	remains->flags = actor->flags; // Transfer flags
+	P_SetThingPosition(remains);
+	remains->flags2 = actor->flags2; // Transfer flags2
+	remains->fuse = actor->fuse; // Transfer respawn timer
+	remains->threshold = 68;
+	remains->skin = NULL;
+
+	actor->flags2 |= MF2_BOSSNOTRAP; // Dummy flag to mark this as an exploded TV until it respawns
+	tmthing = remains;
+
+	if (actor->info->deathsound) S_StartSound(remains, actor->info->deathsound);
+
+	switch (actor->type)
+	{
+		case MT_RANDOMITEM: // Random!
+		{
+			if (actor->target && actor->target->player
+				&& !(actor->target->player->kartstuff[k_greenshell] & 2 || actor->target->player->kartstuff[k_triplegreenshell] & 8
+				||   actor->target->player->kartstuff[k_redshell]   & 2 || actor->target->player->kartstuff[k_tripleredshell] & 8
+				||   actor->target->player->kartstuff[k_banana]     & 2 || actor->target->player->kartstuff[k_triplebanana] & 8
+				||   actor->target->player->kartstuff[k_fakeitem]   & 2 || actor->target->player->kartstuff[k_magnet]
+				||   actor->target->player->kartstuff[k_bobomb]     & 2 || actor->target->player->kartstuff[k_blueshell]
+				||   actor->target->player->kartstuff[k_mushroom]       || actor->target->player->kartstuff[k_fireflower]
+				||   actor->target->player->kartstuff[k_star]           || actor->target->player->kartstuff[k_goldshroom]
+				||   actor->target->player->kartstuff[k_lightning]      || actor->target->player->kartstuff[k_megashroom]
+				||   actor->target->player->kartstuff[k_itemroulette]
+				||   actor->target->player->kartstuff[k_boo]            || actor->target->player->kartstuff[k_bootaketimer]
+				||   actor->target->player->kartstuff[k_boostolentimer])
+			   )
+				actor->target->player->kartstuff[k_itemroulette] = 1;
+			else if(cv_debug && !(actor->target && actor->target->player))
+				CONS_Printf("ERROR: Powerup has no target!\n");
+
+			remains->flags &= ~MF_AMBUSH;
+			break;
+		}
+		default:
+			item = actor->info->damage;
+			break;
+	}
+
+	P_RemoveMobj(actor);
+}
+
 void A_RedShellChase(mobj_t *actor)
 {
 

src/p_mobj.c

@@ -260,7 +260,7 @@ boolean P_SetPlayerMobjState(mobj_t *mobj, statenum_t state)
 		// Adjust the player's animation speed to match their velocity.
 		if (!(disableSpeedAdjust || player->charflags & SF_NOSPEEDADJUST))
 		{
-			fixed_t speed = FixedDiv(player->speed, mobj->scale);
+			fixed_t speed = FixedDiv(player->speed, FixedMul(mobj->scale, player->mo->movefactor)); // fixed_t speed = FixedDiv(player->speed, mobj->scale);
 			if (player->panim == PA_ROLL)
 			{
 				if (speed > 16<<FRACBITS)
@@ -1413,7 +1413,7 @@ void P_CheckGravity(mobj_t *mo, boolean affect)
 }
 
 #define STOPSPEED (FRACUNIT)
-#define FRICTION (ORIG_FRICTION) // 0.90625
+//#define FRICTION (ORIG_FRICTION) // 0.90625
 
 //
 // P_SceneryXYFriction
@@ -1446,7 +1446,7 @@ static void P_SceneryXYFriction(mobj_t *mo, fixed_t oldx, fixed_t oldy)
 		{
 			// Stolen from P_SpawnFriction
 			mo->friction = FRACUNIT - 0x100;
-			mo->movefactor = ((0x10092 - mo->friction)*(0x70))/0x158;
+			//mo->movefactor = ((0x10092 - mo->friction)*(0x70))/0x158;
 		}
 		else
 			mo->friction = ORIG_FRICTION;
@@ -1471,7 +1471,7 @@ static void P_XYFriction(mobj_t *mo, fixed_t oldx, fixed_t oldy)
 		// spinning friction
 		if (player->pflags & PF_SPINNING && (player->rmomx || player->rmomy) && !(player->pflags & PF_STARTDASH))
 		{
-			const fixed_t ns = FixedDiv(549*FRICTION,500*FRACUNIT);
+			const fixed_t ns = FixedDiv(549*ORIG_FRICTION,500*FRACUNIT); //const fixed_t ns = FixedDiv(549*FRICTION,500*FRACUNIT);
 			mo->momx = FixedMul(mo->momx, ns);
 			mo->momy = FixedMul(mo->momy, ns);
 		}
@@ -2490,7 +2490,7 @@ static boolean P_ZMovement(mobj_t *mo)
 
 					// Stolen from P_SpawnFriction
 					mo->friction = FRACUNIT - 0x100;
-					mo->movefactor = ((0x10092 - mo->friction)*(0x70))/0x158;
+					//mo->movefactor = ((0x10092 - mo->friction)*(0x70))/0x158;
 				}
 				else if (mo->type == MT_FALLINGROCK)
 				{
@@ -7827,7 +7827,7 @@ mobj_t *P_SpawnMobj(fixed_t x, fixed_t y, fixed_t z, mobjtype_t type)
 
 	mobj->friction = ORIG_FRICTION;
 
-	mobj->movefactor = ORIG_FRICTION_FACTOR;
+	mobj->movefactor = FRACUNIT; //mobj->movefactor = ORIG_FRICTION_FACTOR;
 
 	// All mobjs are created at 100% scale.
 	mobj->scale = FRACUNIT;
@@ -9920,7 +9920,7 @@ void P_SpawnHoopsAndRings(mapthing_t *mthing)
 		mthing->mobj = mobj;
 	}
 	// All manners of rings and coins
-	else if (mthing->type == mobjinfo[MT_RING].doomednum || mthing->type == mobjinfo[MT_COIN].doomednum ||
+	else if (mthing->type == mobjinfo[MT_RING].doomednum || mthing->type == mobjinfo[MT_COIN].doomednum || mthing->type == mobjinfo[MT_RANDOMITEM].doomednum || 
 	         mthing->type == mobjinfo[MT_REDTEAMRING].doomednum || mthing->type == mobjinfo[MT_BLUETEAMRING].doomednum)
 	{
 		mobjtype_t ringthing = MT_RING;
@@ -9941,6 +9941,9 @@ void P_SpawnHoopsAndRings(mapthing_t *mthing)
 			case 309: // No team rings in non-CTF
 				ringthing = (gametype == GT_CTF) ? MT_BLUETEAMRING : MT_RING;
 				break;
+			case 2000: // SRB2kart
+				ringthing = MT_RANDOMITEM;
+				break;
 			default:
 				// Spawn rings as blue spheres in special stages, ala S3+K.
 				if (G_IsSpecialStage(gamemap) && useNightsSS)

src/p_saveg.c

@@ -1083,7 +1083,7 @@ static void SaveMobjThinker(const thinker_t *th, const UINT8 type)
 		diff |= MD_TRACER;
 	if (mobj->friction != ORIG_FRICTION)
 		diff |= MD_FRICTION;
-	if (mobj->movefactor != ORIG_FRICTION_FACTOR)
+	if (mobj->movefactor != FRACUNIT) //if (mobj->movefactor != ORIG_FRICTION_FACTOR)
 		diff |= MD_MOVEFACTOR;
 	if (mobj->fuse)
 		diff |= MD_FUSE;
@@ -2060,7 +2060,7 @@ static void LoadMobjThinker(actionf_p1 thinker)
 	if (diff & MD_MOVEFACTOR)
 		mobj->movefactor = READFIXED(save_p);
 	else
-		mobj->movefactor = ORIG_FRICTION_FACTOR;
+		mobj->movefactor = FRACUNIT; //mobj->movefactor = ORIG_FRICTION_FACTOR;
 	if (diff & MD_FUSE)
 		mobj->fuse = READINT32(save_p);
 	if (diff & MD_WATERTOP)

src/p_spec.c

@@ -3646,9 +3646,9 @@ DoneSection2:
 	// Process Section 3
 	switch (special)
 	{
-		case 1: // Ice/Sludge
+		case 1: // Unused   (was "Ice/Sludge")
 		case 2: // Wind/Current
-		case 3: // Ice/Sludge and Wind/Current
+		case 3: // Unused   (was "Ice/Sludge and Wind/Current")
 		case 4: // Conveyor Belt
 			break;
 
@@ -6945,12 +6945,12 @@ void T_Friction(friction_t *f)
 
 	sec = sectors + f->affectee;
 
-	// Make sure the sector type hasn't changed
+	// Get FOF control sector   (was "Make sure the sector type hasn't changed")
 	if (f->roverfriction)
-	{
+	//{
 		referrer = sectors + f->referrer;
 
-		if (!(GETSECSPECIAL(referrer->special, 3) == 1
+	/*	if (!(GETSECSPECIAL(referrer->special, 3) == 1
 			|| GETSECSPECIAL(referrer->special, 3) == 3))
 			return;
 	}
@@ -6959,7 +6959,7 @@ void T_Friction(friction_t *f)
 		if (!(GETSECSPECIAL(sec->special, 3) == 1
 			|| GETSECSPECIAL(sec->special, 3) == 3))
 			return;
-	}
+	}*/
 
 	// Assign the friction value to players on the floor, non-floating,
 	// and clipped. Normally the object's friction value is kept at
@@ -6990,6 +6990,7 @@ void T_Friction(friction_t *f)
 					|| (f->friction < thing->friction))
 				{
 					thing->friction = f->friction;
+					if (thing->player)
 						thing->movefactor = f->movefactor;
 				}
 			}
@@ -6997,6 +6998,7 @@ void T_Friction(friction_t *f)
 				|| f->friction < thing->friction))
 			{
 				thing->friction = f->friction;
+				if (thing->player)
 					thing->movefactor = f->movefactor;
 			}
 		}
@@ -7013,29 +7015,36 @@ static void P_SpawnFriction(void)
 	size_t i;
 	line_t *l = lines;
 	register INT32 s;
-	fixed_t length; // line length controls magnitude
+	fixed_t strength; // frontside texture offset controls magnitude   //fixed_t length; // line length controls magnitude
 	fixed_t friction; // friction value to be applied during movement
 	INT32 movefactor; // applied to each player move to simulate inertia
 
 	for (i = 0; i < numlines; i++, l++)
 		if (l->special == 540)
 		{
-			length = P_AproxDistance(l->dx, l->dy)>>FRACBITS;
+			//length = P_AproxDistance(l->dx, l->dy)>>FRACBITS;
-			friction = (0x1EB8*length)/0x80 + 0xD000;
+			//friction = (0x1EB8*length)/0x80 + 0xD000;
+			strength = sides[l->sidenum[0]].textureoffset>>FRACBITS;
+			if (strength > 0) // sludge
+				strength = strength*2; // otherwise, the maximum sludginess value is +967...
+
+			// The following check might seem odd. At the time of movement,
+			// the move distance is multiplied by 'friction/0x10000', so a
+			// higher friction value actually means 'less friction'.
+			friction = ORIG_FRICTION - (0x1EB8*strength)/0x80; // ORIG_FRICTION is 0xE800
 
 			if (friction > FRACUNIT)
 				friction = FRACUNIT;
 			if (friction < 0)
 				friction = 0;
 
-			// The following check might seem odd. At the time of movement,
+			//if (friction > ORIG_FRICTION) // ice
-			// the move distance is multiplied by 'friction/0x10000', so a
+			//	movefactor = ((0x10092 - friction)*(0x70))/0x158;
-			// higher friction value actually means 'less friction'.
+			movefactor = FixedDiv(ORIG_FRICTION, friction);
-
+			if (movefactor < FRACUNIT)
-			if (friction > ORIG_FRICTION) // ice
+				movefactor = 8*movefactor - 7*FRACUNIT;
-				movefactor = ((0x10092 - friction)*(0x70))/0x158;
 			else
-				movefactor = ((friction - 0xDB34)*(0xA))/0x80;
+				movefactor = FRACUNIT; //movefactor = ((friction - 0xDB34)*(0xA))/0x80;
 
 			// killough 8/28/98: prevent odd situations
 			if (movefactor < 32)
@@ -7289,12 +7298,14 @@ void T_Pusher(pusher_t *p)
 	{
 		referrer = &sectors[p->referrer];
 
-		if (!(GETSECSPECIAL(referrer->special, 3) == 2
+		//if (!(GETSECSPECIAL(referrer->special, 3) == 2
-			|| GETSECSPECIAL(referrer->special, 3) == 3))
+		//	|| GETSECSPECIAL(referrer->special, 3) == 3))
+		if (GETSECSPECIAL(referrer->special, 3) != 2)
 			return;
 	}
-	else if (!(GETSECSPECIAL(sec->special, 3) == 2
+	//else if (!(GETSECSPECIAL(sec->special, 3) == 2
-			|| GETSECSPECIAL(sec->special, 3) == 3))
+	//		|| GETSECSPECIAL(sec->special, 3) == 3))
+	else if (GETSECSPECIAL(sec->special, 3) != 2)
 		return;
 
 	// For constant pushers (wind/current) there are 3 situations:

src/p_user.c

@@ -4694,11 +4694,14 @@ static void P_3dMovement(player_t *player)
 	}
 
 	// Better maneuverability while flying
-	if(player->powers[pw_tailsfly])
+	//if(player->powers[pw_tailsfly])
-	{
+	//{
-		thrustfactor = player->thrustfactor*2;
+	//	thrustfactor = player->thrustfactor*2;
-		acceleration = player->accelstart + (FixedDiv(player->speed, player->mo->scale)>>FRACBITS) * player->acceleration;
+	//	acceleration = player->accelstart + (FixedDiv(player->speed, player->mo->scale)>>FRACBITS) * player->acceleration;
-	}
+	//}
+
+	if (player->mo->movefactor != FRACUNIT) // Friction-scaled acceleration...
+		acceleration = FixedMul(acceleration<<FRACBITS, player->mo->movefactor)>>FRACBITS;
 
 	// Forward movement
 	if (player->climbing)
@@ -6361,7 +6364,7 @@ static void P_SkidStuff(player_t *player)
 			// If your push angle is more than this close to a full 180 degrees, trigger a skid.
 			if (dang > ANGLE_157h)
 			{
-				player->skidtime = TICRATE/2;
+				player->skidtime = (player->mo->movefactor == FRACUNIT) ? TICRATE/2 : (FixedDiv(35<<(FRACBITS-1), FixedSqrt(player->mo->movefactor)))>>FRACBITS; //player->skidtime = TICRATE/2;
 				S_StartSound(player->mo, sfx_skid);
 				if (player->panim != PA_WALK)
 					P_SetPlayerMobjState(player->mo, S_KART_WALK2); // SRB2kart - was S_PLAY_RUN4
@@ -6400,6 +6403,11 @@ static void P_MovePlayer(player_t *player)
 	cmd = &player->cmd;
 	runspd = FixedMul(player->runspeed, player->mo->scale);
 
+	// Let's have some movement speed fun on low-friction surfaces, JUST for players... 
+	// (high friction surfaces shouldn't have any adjustment, since the acceleration in 
+	// this game is super high and that ends up cheesing high-friction surfaces.)
+	runspd = FixedMul(runspd, player->mo->movefactor);
+
 	// Control relinquishing stuff!
 	if (player->powers[pw_ingoop])
 		player->pflags |= PF_FULLSTASIS;
@@ -6636,6 +6644,8 @@ static void P_MovePlayer(player_t *player)
 	//else if (onground && (player->mo->state == &states[S_PLAY_SPRING] || player->panim == PA_FALL || player->mo->state == &states[S_PLAY_CARRY]) && !player->mo->momz)
 	//	P_SetPlayerMobjState(player->mo, S_PLAY_STND);
 
+	player->mo->movefactor = FRACUNIT; // We're not going to do any more with this, so let's change it back for the next frame.
+
 	// If you are stopped and are still walking, stand still!
 	if (!player->mo->momx && !player->mo->momy && !player->mo->momz && player->panim == PA_WALK)
 		P_SetPlayerMobjState(player->mo, S_KART_STND); // SRB2kart - was S_PLAY_STND

src/sounds.h

@@ -549,16 +549,16 @@ typedef enum
 	sfx_shbrk,
 	sfx_mkdrft,
 	sfx_mkslid,
-	sfx_mkitem,
+	sfx_mkitm,
-	sfx_mkitem1,
+	sfx_mkitm1,
-	sfx_mkitem2,
+	sfx_mkitm2,
-	sfx_mkitem3,
+	sfx_mkitm3,
-	sfx_mkitem4,
+	sfx_mkitm4,
-	sfx_mkitem5,
+	sfx_mkitm5,
-	sfx_mkitem6,
+	sfx_mkitm6,
-	sfx_mkitem7,
+	sfx_mkitm7,
-	sfx_mkitem8,
+	sfx_mkitm8,
-	sfx_mkitemF,
+	sfx_mkitmF,
 
 	sfx_taunt1,
 	sfx_taunt2,