// Tick and friends
extend Class Demolitionist
{
	void SenseItems()
	{
		if ( player.cmd.buttons&BT_USER3 )
		{
			let bt = BlockThingsIterator.Create(self,800);
			while ( bt.Next() )
			{
				let i = bt.Thing;
				if ( !i || (!(i is 'Inventory') && !(i is 'Chancebox') && !(i is 'SWWMRespawnTimer')) ) continue;
				if ( (i is 'Inventory') && (i.bINVISIBLE || !i.bSPECIAL || Inventory(i).Owner) ) continue;
				if ( (i is 'Chancebox') && (i.CurState != i.SpawnState) ) continue;
				if ( !SWWMUtility.SphereIntersect(i,pos,800) ) continue;
				if ( !level.allmap && !i.CheckSight(self,SF_IGNOREVISIBILITY|SF_IGNOREWATERBOUNDARY) ) continue;
				SWWMItemSense.Spawn(self,i);
			}
			bt.Destroy();
		}
		SWWMItemsense itm = itemsense;
		SWWMItemsense prev = null, next;
		while ( itm )
		{
			next = itm.next;
			if ( itm.Tick() )
			{
				if ( prev ) prev.next = next;
				else itemsense = next;
				itm.Destroy();
			}
			else prev = itm;
			itm = next;
		}
	}

	void CheckItemMagnet()
	{
		if ( magtime > 40 )
		{
			if ( !(player.cmd.buttons&BT_USE) || swwm_usetopickup )
			{
				magtime = 0;
				SWWMMagItem mi = magitem;
				while ( mi )
				{
					let next = mi.next;
					mi.Destroy();
					mi = next;
				}
				magitem_cnt = 0;
				return;
			}
			if ( (magitem_cnt < 8) && !swwm_usetopickup )
			{
				let bt = BlockThingsIterator.Create(self,500);
				while ( bt.Next() )
				{
					let t = bt.Thing;
					if ( !t || !(t is 'Inventory') || !t.bSPECIAL || !t.bDROPPED || t.bINVISIBLE || Inventory(t).Owner || !SWWMUtility.SphereIntersect(t,pos,500) || !CheckSight(t,SF_IGNOREVISIBILITY|SF_IGNOREWATERBOUNDARY) )
						continue;
					let i = Inventory(t);
					Class<Inventory> cls = i.GetClass();
					if ( i is 'Ammo' ) cls = Ammo(i).GetParentAmmo();
					else if ( i is 'MaGammo' ) cls = MagAmmo(i).GetParentMagAmmo();
					let oi = FindInventory(cls);
					if ( !i.bALWAYSPICKUP && oi && (oi.Amount >= oi.MaxAmount) ) continue;
					if ( (i is 'SWWMWeapon') && SWWMWeapon(i).HasSwapWeapon(self) && swwm_swapweapons ) continue;
					if ( (i is 'SWWMDualWeaponGiver') && SWWMDualWeaponGiver(i).HasSwapWeapon(self) && swwm_swapweapons ) continue;
					bool addme = true;
					for ( SWWMMagItem mi=magitem; mi; mi=mi.next )
					{
						if ( mi.item != i ) continue;
						addme = false;
						break;
					}
					if ( !addme ) continue;
					let nmi = new("SWWMMagItem");
					nmi.target = self;
					nmi.item = i;
					nmi.next = magitem;
					i.A_StartSound("misc/magitem",CHAN_AMBEXTRA,CHANF_LOOP,.2,1.,.5);
					i.bNOGRAVITY = true;
					magitem = nmi;
					magitem_cnt++;
				}
				bt.Destroy();
			}
			SWWMMagItem itm = magitem;
			SWWMMagItem prev = null, next;
			while ( itm )
			{
				next = itm.next;
				if ( itm.Tick() )
				{
					if ( prev ) prev.next = next;
					else magitem = next;
					itm.Destroy();
					magitem_cnt--;
				}
				else prev = itm;
				itm = next;
			}
			return;
		}
		if ( player.cmd.buttons&BT_USE ) magtime++;
	}

	void CheckUnderwaterAmb( bool restore = false )
	{
		Vector3 headpos = Vec3Offset(0,0,player.viewheight);
		Vector3 centerpos = Vec3Offset(0,0,height/2);
		Sector headregion = null;
		if ( CurSector.moreflags&Sector.SECMF_UNDERWATER ) // check underwater sector
			headregion = CurSector;
		else if ( CurSector.heightsec && (Cursector.heightsec.moreflags&Sector.SECMF_UNDERWATERMASK) ) // check height transfer
		{
			let hsec = CurSector.heightsec;
			double fh = hsec.floorplane.ZAtPoint(pos.xy);
			if ( pos.z < fh )
			{
				if ( headpos.z <= fh )
					headregion = hsec;
			}
			else if ( !(hsec.moreflags&Sector.SECMF_FAKEFLOORONLY) && (headpos.z > hsec.ceilingplane.ZAtPoint(pos.xy)) )
				headregion = hsec;
		}
		else // check 3D floors
		{
			for ( int i=0; i<CurSector.Get3DFloorCount(); i++ )
			{
				let ff = CurSector.Get3DFloor(i);
				if ( !(ff.flags&F3DFloor.FF_EXISTS) || (ff.flags&F3DFloor.FF_SOLID) || !(ff.flags&F3DFloor.FF_SWIMMABLE) ) continue;
				double ff_bottom = ff.bottom.ZAtPoint(pos.xy);
				double ff_top = ff.top.ZAtPoint(pos.xy);
				if ( (ff_top <= pos.z) || (ff_bottom > centerpos.z) ) continue;
				if ( headpos.z <= ff_top )
					headregion = ff.model;
				break;
			}
		}
		int curunder = UNDER_NONE;
		if ( headregion )
		{
			switch ( headregion.damagetype )
			{
			case 'Fire':
			case 'Lava':
				curunder = UNDER_LAVA;
				break;
			case 'Slime':
			case 'Poison':
			case 'PoisonCloud':
				curunder = UNDER_SLIME;
				break;
			case 'Ice':
			case 'Drowning':
			default:
				curunder = UNDER_WATER;
				break;
			}
			undercol = headregion.ColorMap.LightColor;
		}
		if ( (curunder != lastunder) || restore )
		{
			static const string undersnd[] = {"","misc/underwater","misc/underslime","misc/underlava"};
			static const string entersnd[] = {"","misc/waterenter","misc/slimeenter","misc/lavaenter"};
			static const string exitsnd[] = {"","misc/waterexit","misc/slimeexit","misc/lavaexit"};
			A_StopSound(CHAN_AMBEXTRA);
			if ( curunder > UNDER_NONE )
			{
				A_StartSound(undersnd[curunder],CHAN_AMBEXTRA,CHANF_LOOP|CHANF_UI);
				if ( !restore && (players[consoleplayer].Camera == self) )
					A_StartSound(entersnd[curunder],CHAN_FOOTSTEP,CHANF_OVERLAP|CHANF_UI);
			}
			if ( !restore && (lastunder > UNDER_NONE) && (players[consoleplayer].Camera == self) )
				A_StartSound(exitsnd[lastunder],CHAN_FOOTSTEP,CHANF_OVERLAP|CHANF_UI);
		}
		if ( curunder > UNDER_NONE )
			A_SoundVolume(CHAN_AMBEXTRA,(players[consoleplayer].Camera==self)?1.:0.);
		lastunder = curunder;
	}

	override void Tick()
	{
		Vector3 oldpos = pos;
		// can't be poisoned
		PoisonDurationReceived = 0;
		PoisonPeriodReceived = 0;
		PoisonDamageReceived = 0;
		Super.Tick();
		if ( (gamestate != GS_LEVEL) || !player || (player.mo != self) || (freezetics > 0) ) return;
		UpdateFace();
		UpdateTags();
		if ( hasteleported )
		{
			// we just got teleported, don't count the travel distance
			oldpos = pos;
			hasteleported = false;
		}
		if ( !selflight )
		{
			selflight = new("DemolitionistSelfLight");
			selflight.ChangeStatNum(STAT_USER);
			selflight.target = self;
			selflight.Tick();
		}
		if ( !myshadow ) myshadow = SWWMShadow.Track(self);
		// double-check that we have these
		if ( !FindInventory("AlmasteelPlating") )
		{
			let ap = Inventory(Spawn("AlmasteelPlating"));
			if ( !ap.CallTryPickup(self) ) ap.Destroy();
		}
		if ( !FindInventory("SayaCollar") )
		{
			let sc = Inventory(Spawn("SayaCollar"));
			if ( !sc.CallTryPickup(self) ) sc.Destroy();
		}
		// this is why we need mod cvar callbacks
		if ( swwm_singlefirst != oldsinglefirst )
			WeaponSlots.SetupWeaponSlots(self);
		oldsinglefirst = swwm_singlefirst;
		// overheal fading
		if ( !isFrozen() && !(player.cheats&CF_TOTALLYFROZEN) )
		{
			if ( (health <= 200) || (health > oldhealth) )
			{
				healtimer = 0;
				healcooldown = 80;
			}
			else if ( health > 200 )
			{
				if ( healcooldown > 0 ) healcooldown--;
				else
				{
					if ( health > 1000 )
					{
						let spr = DivineSpriteEffect(FindInventory("DivineSpriteEffect"));
						if ( !spr || spr.bHealDone )
							A_SetHealth(max(1000,health-10));
						if ( health <= 1000 ) healcooldown = 40;
					}
					else if ( health > 500 )
					{
						if ( !FindInventory("GrilledCheeseSafeguard") && !(healtimer%3) )
							A_SetHealth(health-1);
						if ( health <= 500 ) healcooldown = 20;
					}
					else if ( health > 200 )
					{
						if ( !FindInventory("RefresherRegen") && !(healtimer%12) )
							A_SetHealth(health-1);
					}
					healtimer++;
				}
			}
		}
		oldhealth = health;
		oldlagvel = lagvel;
		oldlagready = lagready;
		if ( player.weaponstate&WF_WEAPONBOBBING ) lagready = lagready*.9+.1;
		else lagready = lagready*.4;
		lagvel = lagvel*.8+vel*.2;
		double traveldist = level.Vec3Diff(oldpos,pos).length();
		if ( !player.onground || bNoGravity )
		{
			if ( waterlevel > 1 )
			{
				cairtime = 0;
				mystats.swimdist += traveldist;
			}
			else
			{
				cairtime++;
				if ( cairtime > mystats.airtime ) mystats.airtime = cairtime;
				mystats.airdist += traveldist;
			}
			if ( (vel.z < -fallingscreamminspeed) && (vel.z > -fallingscreammaxspeed) && (player == players[consoleplayer]) )
				SWWMHandler.AddOneliner("falling",2,30);
		}
		else
		{
			SWWMHandler.CancelOneliner("falling");
			airscreamtime = 0;
			cairtime = 0;
			mystats.grounddist += traveldist;
			SWWMUtility.AchievementProgressIncDouble("travel",traveldist/32000.,player);
		}
		// spawn bubbles while underwater
		if ( (waterlevel > 1) && !Random[ExploS](0,5) )
		{
			int numpt = Random[ExploS](-2,2);
			for ( int i=0; i<numpt; i++ )
			{
				let p = Spawn("SWWMBubble",Vec3Offset(FRandom[ExploS](-radius,radius)*.8,FRandom[ExploS](-radius,radius)*.8,FRandom[ExploS](height*.1,height*.9)));
				p.scale *= FRandom[ExploS](.02,.2);
				p.vel += vel*.2;
			}
		}
		CheckUnderwaterAmb();
		SenseItems();
		CheckItemMagnet();
		if ( vel.length() > mystats.topspeed ) mystats.topspeed = vel.length();
		if ( vel.length() > ((3600*GameTicRate)/32000.) )
			SWWMUtility.AchievementProgress("sanic",int((vel.length()*3600*GameTicRate)/32000.),player);
		if ( !myvoice ) myvoice = CVar.GetCVar('swwm_voicetype',player);
		if ( player.onground && !bNoGravity && !lastground )
		{
			// bump down weapon
			bumpvelz -= lastvelz;
			BumpView(min(-lastvelz/10.,20));
			if ( lastvelz < -25 )
			{
				let s = Spawn("DemolitionistShockwave",pos);
				s.target = self;
				s.special1 = int(-lastvelz);
				A_AlertMonsters(swwm_uncapalert?0:2500);
				BumpView(15.);
				lastbump *= 1.1;
				if ( FindInventory("RagekitPower") )
				{
					// stop for just a split second UNLESS bunnyhopping
					if ( !(player.cmd.buttons&BT_RUN) || (level.maptime >= (lastairtic+10)) )
						ReactionTime = 6;
				}
				else
				{
					A_Stop();
					ReactionTime = 17;
				}
				if ( player == players[consoleplayer] )
				{
					A_StartSound("demolitionist/hardland",CHAN_FOOTSTEP,CHANF_OVERLAP);
					A_StartSound("demolitionist/hardland",CHAN_FOOTSTEP,CHANF_OVERLAP,pitch:.7);
					A_StartSound("demolitionist/hardland",CHAN_FOOTSTEP,CHANF_OVERLAP,pitch:.4);
				}
				mystats.stompcount++;
			}
			if ( lastvelz < -10 )
				A_StartSound("demolitionist/runstop",CHAN_FOOTSTEP,CHANF_OVERLAP);
			if ( (lastvelz < -gruntspeed) && (swwm_mutevoice < 4) && (health > 0) )
			{
				int loudlv = swwm_voiceamp;
				A_StartSound(String.Format("voice/%s/grunt",myvoice.GetString()),CHAN_DEMOVOICE,CHANF_OVERLAP);
				if ( loudlv > 1 ) A_StartSound(String.Format("voice/%s/grunt",myvoice.GetString()),CHAN_DEMOVOICEAUX,CHANF_OVERLAP);
				if ( loudlv > 2 ) A_StartSound(String.Format("voice/%s/grunt",myvoice.GetString()),CHAN_DEMOVOICEAUX2,CHANF_OVERLAP);
				if ( loudlv > 3 ) A_StartSound(String.Format("voice/%s/grunt",myvoice.GetString()),CHAN_DEMOVOICEAUX3,CHANF_OVERLAP);
			}
			if ( lastvelz < -1 )
				A_Footstep(0,1,clamp(-lastvelz*0.05,0.0,1.0),true);
			// bounce off slopes
			if ( pos.z <= floorz )
			{
				F3DFloor ff;
				for ( int i=0; i<FloorSector.Get3DFloorCount(); i++ )
				{
					if ( !(FloorSector.Get3DFloor(i).flags&F3DFloor.FF_SOLID) ) continue;
					if ( !(FloorSector.Get3DFloor(i).top.ZAtPoint(pos.xy) ~== floorz) ) continue;
					ff = FloorSector.Get3DFloor(i);
					break;
				}
				Vector3 fnorm;
				if ( ff ) fnorm = -ff.top.Normal;
				else fnorm = FloorSector.floorplane.Normal;
				double maxsteep = clamp(abs(lastvelz)*.1,0.,.9);
				if ( fnorm.z < maxsteep ) vel = .8*fnorm*(-lastvelz)*(1.-.8*fnorm.z);
			}
		}
		// crush anything we're standing on
		bool dummy;
		Actor encroached;
		[dummy, encroached] = TestMobjZ();
		// add special check so corpses don't get stuck on top of monsters and players
		if ( encroached && encroached.bSOLID && (bSOLID || encroached.bACTLIKEBRIDGE) )
		{
			if ( (encroached is 'FroggyChair') && (encroached != oldencroached) )
				encroached.A_StartSound("squeak",CHAN_BODY,CHANF_OVERLAP);
			// try to follow movement (this method is awkward but works with monsters)
			if ( encroached == oldencroached )
			{
				Vector3 oldp = pos;
				Vector3 newp = level.Vec3Offset(pos,level.Vec3Diff(oldencroachedpos,encroached.pos));
				if ( level.IsPointInLevel(newp) )
				{
					SetOrigin(newp,true);
					if ( !TestMobjLocation() ) SetOrigin(oldp,true);
				}
				encroachtics++;
				if ( !(encroachtics%GameTicRate) && (encroached.bISMONSTER || encroached.player || (encroached is 'ScriptedMarine')) && !IsFriend(encroached) )
					SWWMUtility.AchievementProgress("step",encroachtics/GameTicRate,player);
			}
			else encroachtics = 0;
			oldencroached = encroached;
			oldencroachedpos = encroached.pos;
		}
		else
		{
			// launch in movement direction (useful for moving platforms)
			// make sure we're not getting launched because an enemy just died under our feet, because that can cause some issues
			if ( oldencroached && (dashboost <= 0.) && (lastvelz >= -25) && (!oldencroached.bISMONSTER || (oldencroached.Health > 0)) ) vel += oldencroached.vel+level.Vec3Diff(oldencroachedpos,oldencroached.pos);
			oldencroached = null;
			encroachtics = 0;
		}
		if ( encroached && encroached.bSHOOTABLE && !encroached.bNODAMAGE && (lastvelz <= 0) && !(encroached is 'Demolitionist') )
		{
			if ( (lastvelz < -5) || !(level.maptime%5) )
			{
				int realdmg = encroached.DamageMobj(self,self,int((2+max(0,-lastvelz*3))*max(1.,mass/encroached.mass)),'Jump',DMG_THRUSTLESS);
				if ( FindInventory("RagekitPower") )
				{
					let ps = Spawn("BigPunchSplash",pos);
					ps.damagetype = 'Jump';
					ps.target = self;
					ps.special1 = realdmg;
				}
				if ( (realdmg > 0) && encroached && !encroached.bNOBLOOD && !encroached.bINVULNERABLE )
				{
					encroached.TraceBleed(realdmg,self);
					encroached.SpawnBlood(pos,angle,realdmg);
				}
			}
		}
		if ( abs(bumpvelz) > double.epsilon )
		{
			lagvel.z += bumpvelz*.2;
			bumpvelz *= .8;
		}
		if ( abs(bumpangle) > double.epsilon )
		{
			ViewAngle += bumpangle*.5;
			bumpangle *= .8;
		}
		if ( abs(bumppitch) > double.epsilon )
		{
			ViewPitch += bumppitch*.5;
			bumppitch *= .8;
		}
		if ( abs(bumproll) > double.epsilon )
		{
			ViewRoll += bumproll*.5;
			bumproll *= .8;
		}
		// stabilize view angles
		ViewAngle *= .8;
		ViewPitch *= .8;
		ViewRoll *= .8;
		player.cheats |= CF_INTERPVIEWANGLES;
		if ( player.onground && !lastground ) landvelz = lastvelz;
		else if ( !player.onground && lastground ) landvelz = 0;
		else if ( player.onground && lastground ) landvelz *= .9;
		lastground = player.onground;
		lastvelz = prevvelz;
		prevvelz = vel.z;
		bool isdashing = InStateSequence(CurState,FindState("Dash"));
		bool isboosting = InStateSequence(CurState,FindState("Boost"));
		bNOFRICTION = ((bFly&&!bFlyCheat&&!(player.cheats&CF_NOCLIP2))||isdashing);
		if ( fuelcooldown == 1 ) A_StartSound("demolitionist/fuelregen",CHAN_FUELREGEN,CHANF_LOOP,.35,4.,.5);
		else if ( fuelcooldown > 1 ) A_StopSound(CHAN_FUELREGEN);
		fuelcooldown = max(0,fuelcooldown-1);
		if ( dashlockst > 0 )
		{
			dashlockst--;
			if ( dashlockst == 0 ) A_StartSound("demolitionist/dashregen",CHAN_BODY,CHANF_OVERLAP,.5,4.);
		}
		else dashcooldown = max(0,dashcooldown-1);
		boostcooldown = max(0,boostcooldown-1);
		if ( (fuelcooldown <= 0) && (dashfuel < default.dashfuel) )
		{
			A_SoundPitch(CHAN_FUELREGEN,.5+1.5*((dashfuel/default.dashfuel)**2.));
			double oldfuel = dashfuel;
			dashfuel = min(default.dashfuel,dashfuel+clamp(dashfuel*.025,.1,3.));
			// stops
			if ( (oldfuel < (default.dashfuel/24)) && (dashfuel >= default.dashfuel/24) )
			{
				dashfuel = default.dashfuel/24;
				fuelcooldown = 20;
				A_StartSound("demolitionist/fuelrgstp",CHAN_BODY,CHANF_OVERLAP,.6,4.,.6);
			}
			else if ( (oldfuel < (default.dashfuel/12)) && (dashfuel >= default.dashfuel/12) )
			{
				dashfuel = default.dashfuel/12;
				fuelcooldown = 10;
				A_StartSound("demolitionist/fuelrgstp",CHAN_BODY,CHANF_OVERLAP,.6,4.,.7);
			}
			if ( (oldfuel < dashfuel) && (dashfuel == default.dashfuel) )
			{
				A_StopSound(CHAN_FUELREGEN);
				A_StartSound("demolitionist/fuelrgend",CHAN_BODY,CHANF_OVERLAP,.6,4.);
			}
		}
		else if ( dashfuel >= default.dashfuel ) A_StopSound(CHAN_FUELREGEN);
		if ( ((dashboost <= 0) || !(isdashing || (isboosting && player.cmd.buttons&BT_JUMP))) && IsActorPlayingSound(CHAN_JETPACK,"demolitionist/jet") )
			A_StartSound("demolitionist/jetstop",CHAN_JETPACK);
		PainChance = isdashing?0:255;
		if ( isdashing || (vel.length() > 30) )
		{
			bool oldpush = bCANPUSHWALLS;
			bool olduse = bCANUSEWALLS;
			bool oldmcross = bACTIVATEMCROSS;
			bool oldtele = bNOTELEPORT;
			// needed to prevent the many TryMove calls from activating unwanted lines
			bCANPUSHWALLS = false;
			bCANUSEWALLS = false;
			bACTIVATEMCROSS = false;
			bNOTELEPORT = true;
			Actor a;
			if ( isdashing && (dashboost > 0.) )
			{
				for ( int i=-1; i<=1; i+=2 ) for ( int j=1; j<4; j++ )
				{
					a = Spawn("DashTrail",Vec3Angle(15,angle+i*140,35));
					a.master = self;
					a.vel = (RotateVector((j,0),angle+i*160),0)-(0,0,1)*j;
					a.vel -= vel*.5;
				}
			}
			Vector3 dir = vel;
			double spd = dir.length();
			dir = dir/spd;
			Vector3 viewdir = SWWMUtility.Vec3FromAngles(angle,pitch);
			// look for things we could potentially bump into
			bool bumped = false;
			let bi = BlockThingsIterator.Create(self,500);
			let raging = RagekitPower(FindInventory("RagekitPower"));
			double maxmass = max(mass*spd/40.,200);
			if ( raging ) maxmass *= 2;
			while ( (spd > 0) && bi.Next() )
			{
				a = bi.Thing;
				if ( !a || (a == self) || (!a.bSOLID && !a.bSHOOTABLE) || a.bTHRUACTORS || a.bCORPSE || !CanCollideWith(a,false) || !a.CanCollideWith(self,true) ) continue;
				if ( !SWWMUtility.ExtrudeIntersect(self,a,dir*(spd+radius),8) ) continue;
				if ( (a.pos.z <= a.floorz) && (a.height <= MaxStepHeight) ) continue;
				Vector3 diff = level.Vec3Diff(pos,a.pos);
				Vector3 dirto = diff.unit();
				if ( dir dot dirto < .1 ) continue;
				if ( (diff.z <= -a.height) && (lastvelz < -25) ) continue;
				if ( (diff.z <= -a.height) && !isdashing ) continue;
				// don't bump bridges if hit at a specific angle
				if ( a.bACTLIKEBRIDGE )
				{
					Vector3 bnorm = -dirto;
					if ( diff.z <= -a.height ) continue;	// no bump from above
					else if ( diff.z >= Height ) bnorm = (0,0,-1);
					else if ( diff.x > a.Radius+Radius ) bnorm = (-1,0,0);
					else if ( diff.x < -(a.Radius+Radius) ) bnorm = (1,0,0);
					else if ( diff.y > a.Radius+Radius ) bnorm = (0,-1,0);
					else if ( diff.y < -(a.Radius+Radius) ) bnorm = (0,1,0);
					if ( dir dot bnorm > -.6 ) continue;
				}
				if ( !CheckSight(a,SF_IGNOREVISIBILITY|SF_IGNOREWATERBOUNDARY) ) continue;
				// large monsters will stop the player (unless hit from above if we're going at ground pound speed)
				A_QuakeEx(4,4,4,10,0,128,"",QF_RELATIVE|QF_SCALEDOWN|QF_3D);
				A_AlertMonsters(swwm_uncapalert?0:800);
				A_StartSound("demolitionist/bump",CHAN_DAMAGE,CHANF_OVERLAP);
				a.A_StartSound("demolitionist/bump",CHAN_DAMAGE,CHANF_OVERLAP);
				bumptic = gametic+int(20+spd/4.);
				lastbump *= .8;
				if ( (a.bDONTTHRUST || a.bACTLIKEBRIDGE || (a.Mass >= maxmass) || (!a.bSHOOTABLE && !a.bPUSHABLE && (a.Health > 0))) && a.bSOLID && (dir dot dirto > .65) )
				{
					if ( bumped ) continue;
					bumped = true;
					SWWMUtility.AchievementProgressInc("bonk",1,player);
					A_QuakeEx(8,8,8,16,0,128,"",QF_RELATIVE|QF_SCALEDOWN|QF_3D);
					vel *= .2;
					vel -= dir*(10+(spd*30/mass));
					vel -= dirto*(10+(spd*50/mass));
					vel.z += 5+(spd*(10/mass));
					dashboost *= 0.;
				}
				Vector3 pushdir = dirto*.1+dir*.9;
				if ( !a.bDONTTHRUST && (a.Mass < maxmass) && (a.bSHOOTABLE || a.bPUSHABLE) )
				{
					a.vel += pushdir*(25+(spd*20/max(50,a.mass)));
					if ( (a.pos.z <= a.floorz) || !a.TestMobjZ() )
						a.vel.z += 5+(spd*(5/max(50,a.mass)));
				}
				int flg = DMG_THRUSTLESS;
				if ( raging ) flg |= DMG_FOILINVUL;
				if ( !a.player && !a.bDONTBLAST ) a.bBLASTED = true;
				int dmg = int(10+spd*3.);
				bool buttslam = false;
				// BUTTSLAM
				if ( dir dot viewdir < -.3 )
				{
					dmg *= 3;
					buttslam = true;
				}
				if ( a.bSHOOTABLE )
				{
					dmg = a.DamageMobj(self,self,dmg,buttslam?'Buttslam':'Dash',flg);
					if ( (dmg > 0) && a && !a.bNOBLOOD && (raging || !a.bINVULNERABLE) )
					{
						a.TraceBleed(dmg,self);
						a.SpawnBlood(level.Vec3Offset(pos,diff/2),atan2(dir.y,dir.x)+180,dmg);
					}
					if ( buttslam && (!a || (a.Health <= 0)) )
					{
						A_StartSound("demolitionist/buttslam",CHAN_DAMAGE,CHANF_OVERLAP,1.,.4);
						if ( swwm_buttsfx ) A_StartSound("demolitionist/buttslamx",CHAN_DAMAGE,CHAN_OVERLAP,1.,.2);
						Spawn("SWWMItemFog",level.Vec3Offset(pos,diff/2));
						A_QuakeEx(8,8,8,8,0,3000,"",QF_RELATIVE|QF_SCALEDOWN|QF_3D,falloff:300,rollIntensity:1.);
						mystats.buttslams++;
						lastbump *= .8;
					}
				}
				if ( raging )
				{
					let ps = Spawn("BigPunchSplash",level.Vec3Offset(pos,diff/2));
					ps.damagetype = buttslam?'Buttslam':'Dash';
					ps.target = self;
					ps.special1 = dmg;
					raging.DoHitFX();
				}
			}
			// check for ceiling collision
			if ( (spd > 0) && !bumped && ((pos.z+Height+dir.z*spd) >= ceilingz) )
			{
				F3DFloor ff;
				for ( int i=0; i<CeilingSector.Get3DFloorCount(); i++ )
				{
					if ( !(CeilingSector.Get3DFloor(i).top.ZAtPoint(pos.xy) ~== ceilingz) ) continue;
					ff = CeilingSector.Get3DFloor(i);
					break;
				}
				Vector3 ceilnorm;
				if ( ff ) ceilnorm = ff.model.floorplane.Normal;
				else ceilnorm = CeilingSector.ceilingplane.Normal;
				// don't bump if we're only grazing it
				if ( dir dot ceilnorm < -.6 )
				{
					bool busted = false;
					if ( raging || swwm_omnibust )
					{
						// see if we can bust it
						let tempme = new("LineTracer"); // gross hack to pass needed data
						int dmg = int(10+spd*3.);
						if ( raging ) dmg *= 8;
						bool buttslam = false;
						// BUTTSLAM
						if ( dir dot viewdir < -.3 )
						{
							dmg *= 3;
							buttslam = true;
						}
						if ( ff ) tempme.Results.ffloor = ff;
						tempme.Results.HitSector = CeilingSector;
						tempme.Results.HitType = TRACE_HitCeiling;
						if ( BusterWall.Bust(tempme.Results,dmg,self,dir,pos.z+Height) )
						{
							// busted through
							if ( raging )
							{
								let ps = Spawn("BigPunchSplash",Vec3Offset(0,0,Height));
								ps.damagetype = buttslam?'Buttslam':'Dash';
								ps.target = self;
								ps.special1 = int(10+spd*3.);
								raging.DoHitFX();
							}
							A_StartSound("demolitionist/bump",CHAN_DAMAGE,CHANF_OVERLAP);
							busted = true;
							if ( buttslam )
							{
								A_StartSound("demolitionist/buttslam",CHAN_DAMAGE,CHANF_OVERLAP,1.,.4);
								if ( swwm_buttsfx ) A_StartSound("demolitionist/buttslamx",CHAN_DAMAGE,CHAN_OVERLAP,1.,.2);
								Spawn("SWWMItemFog",Vec3Offset(0,0,Height));
								A_QuakeEx(8,8,8,8,0,3000,"",QF_RELATIVE|QF_SCALEDOWN|QF_3D,falloff:300,rollIntensity:1.);
								mystats.buttslams++;
								lastbump *= .8;
							}
						}
					}
					if ( !busted || !raging )
					{
						// headbump
						bumped = true;
						SWWMUtility.AchievementProgressInc("bonk",1,player);
						A_StartSound("demolitionist/bump",CHAN_DAMAGE,CHANF_OVERLAP);
						bumptic = gametic+int(20+spd/4.);
						lastbump *= .8;
						A_QuakeEx(8,8,8,16,0,128,"",QF_RELATIVE|QF_SCALEDOWN|QF_3D);
						A_AlertMonsters(swwm_uncapalert?0:800);
						vel *= .2;
						vel -= dir*(10+(spd*30/mass));
						vel.z += 5+(spd*(10/mass));
						vel += ceilnorm*(15+(spd*40/mass));
						dashboost *= 0.;
						if ( raging )
						{
							let ps = Spawn("BigPunchSplash",Vec3Offset(0,0,Height));
							ps.damagetype = (dir dot viewdir < -3.)?'Buttslam':'Dash';
							ps.target = self;
							ps.special1 = int(10+spd*3.);
							raging.DoHitFX();
						}
					}
				}
			}
			// check for wall collision
			FCheckPosition tm;
			Vector2 steppy = dir.xy*spd/8.;
			Vector3 oldpos = pos;
			bool oldthru = bTHRUACTORS;
			bTHRUACTORS = true;
			for ( int i=1; i<=8; i++ )
			{
				if ( (spd > 0) && !bumped && !TryMove(Vec2Offset(steppy.x,steppy.y),1,false,tm) && SWWMUtility.BlockingLineIsBlocking(self,Line.ML_BLOCKEVERYTHING|Line.ML_BLOCKING|Line.ML_BLOCK_PLAYERS) )
				{
					Vector3 wallnorm = (-BlockingLine.delta.y,BlockingLine.delta.x,0).unit();
					int lside = 1;
					if ( !BlockingLine.sidedef[1] || !SWWMUtility.PointOnLineSide(pos.xy,BlockingLine) )
					{
						lside = 0;
						wallnorm *= -1;
					}
					// don't bump if we're only grazing it
					if ( dir dot wallnorm > -.6 )
						continue;
					bool buttslam = false;
					// BUTTSLAM
					if ( dir dot viewdir < -.3 )
					{
						buttslam = true;
						// leave buttmark
						Vector3 vdir = (2,0,Height*.54);
						A_SprayDecal("ButtMark",172,SWWMUtility.RotateVector3(vdir,angle+90),dir);
						A_SprayDecal("ButtMark",172,SWWMUtility.RotateVector3(vdir,angle-90),dir);
					}
					if ( raging || swwm_omnibust )
					{
						// see if we can bust it
						let tempme = new("LineTracer"); // gross hack to pass needed data
						int dmg = int(10+spd*3.);
						if ( raging ) dmg *= 8;
						if ( buttslam ) dmg *= 3;
						tempme.Results.HitLine = BlockingLine;
						tempme.Results.HitType = TRACE_HitWall;
						tempme.Results.Side = lside;
						tempme.Results.Tier = TIER_MIDDLE;
						if ( BlockingLine.sidedef[1] )
						{
							double ceilz = BlockingLine.sidedef[!lside].sector.ceilingplane.ZAtPoint(pos.xy);
							double florz = BlockingLine.sidedef[!lside].sector.floorplane.ZAtPoint(pos.xy);
							if ( pos.z+Height >= ceilz )
								tempme.Results.Tier = TIER_UPPER;
							else if ( pos.z <= florz )
								tempme.Results.Tier = TIER_LOWER;
						}
						if ( BusterWall.Bust(tempme.Results,dmg,self,dir,pos.z+Height) )
						{
							// busted through
							if ( raging )
							{
								let ps = Spawn("BigPunchSplash",Vec3Offset(dir.x*radius,dir.y*radius,(tempme.Results.Tier==TIER_UPPER)?Height:(tempme.Results.Tier==TIER_LOWER)?0:(Height/2)));
								ps.damagetype = buttslam?'Buttslam':'Dash';
								ps.target = self;
								ps.special1 = int(10+spd*3.);
								raging.DoHitFX();
							}
							A_StartSound("demolitionist/bump",CHAN_DAMAGE,CHANF_OVERLAP);
							if ( buttslam )
							{
								A_StartSound("demolitionist/buttslam",CHAN_DAMAGE,CHANF_OVERLAP,1.,.4);
								if ( swwm_buttsfx ) A_StartSound("demolitionist/buttslamx",CHAN_DAMAGE,CHAN_OVERLAP,1.,.2);
								Spawn("SWWMItemFog",Vec3Offset(dir.x*radius,dir.y*radius,(tempme.Results.Tier==TIER_UPPER)?Height:(tempme.Results.Tier==TIER_LOWER)?0:(Height/2)));
								A_QuakeEx(8,8,8,8,0,3000,"",QF_RELATIVE|QF_SCALEDOWN|QF_3D,falloff:300,rollIntensity:1.);
								mystats.buttslams++;
								lastbump *= .8;
							}
							if ( raging ) continue;	// don't stop
						}
					}
					// wallbump
					bumped = true;
					SWWMUtility.AchievementProgressInc("bonk",1,player);
					A_StartSound("demolitionist/bump",CHAN_DAMAGE,CHANF_OVERLAP);
					bumptic = gametic+int(25+spd/4.);
					lastbump *= .8;
					A_QuakeEx(8,8,8,16,0,128,"",QF_RELATIVE|QF_SCALEDOWN|QF_3D);
					A_AlertMonsters(swwm_uncapalert?0:800);
					vel *= .2;
					vel -= dir*(10+(spd*30/mass));
					vel += wallnorm*(10+(spd*50/mass));
					vel.z += 5+(spd*(10/mass));
					dashboost *= 0.;
					if ( raging )
					{
						let ps = Spawn("BigPunchSplash",Vec3Offset(dir.x*radius,dir.y*radius,Height/2.));
						ps.damagetype = (dir dot viewdir < -3.)?'Buttslam':'Dash';
						ps.target = self;
						ps.special1 = int(10+spd*3.);
						raging.DoHitFX();
					}
					// activate it
					int locknum = SWWMUtility.GetLineLock(BlockingLine);
					if ( !locknum || CheckKeys(locknum,false,true) )
					{
						hitactivate = true;
						BlockingLine.Activate(self,lside,SPAC_Use);
						hitactivate = false;
					}
					BlockingLine.Activate(self,lside,SPAC_Impact);
					break;
				}
			}
			// check for slope boosting (only if dashing)
			if ( (pos.z <= floorz) && (spd > 0) && isdashing )
			{
				F3DFloor ff;
				for ( int i=0; i<FloorSector.Get3DFloorCount(); i++ )
				{
					if ( !(FloorSector.Get3DFloor(i).flags&F3DFloor.FF_SOLID) ) continue;
					if ( !(FloorSector.Get3DFloor(i).top.ZAtPoint(pos.xy) ~== floorz) ) continue;
					ff = FloorSector.Get3DFloor(i);
					break;
				}
				Vector3 fnorm;
				if ( ff ) fnorm = -ff.top.Normal;
				else fnorm = FloorSector.floorplane.Normal;
				// how far up should the boost be
				double xspd = spd*(1.-dir.z);
				vel.z += xspd*(1.-fnorm.z);
			}
			SetOrigin(oldpos,true);
			bTHRUACTORS = oldthru;
			bCANPUSHWALLS = oldpush;
			bCANUSEWALLS = olduse;
			bACTIVATEMCROSS = oldmcross;
			bNOTELEPORT = oldtele;
		}
		else if ( isboosting && (dashboost > 0.) )
		{
			Actor a;
			for ( int i=-1; i<=1; i+=2 ) for ( int j=1; j<4; j++ )
			{
				a = Spawn("DashTrail",Vec3Angle(10,angle+i*140,40));
				a.master = self;
				a.vel = .5*(RotateVector((j,0),angle+i*160),0)-(0,0,1)*j;
				a.vel -= vel*.5;
			}
		}
	}
}