Fix wacky-ass water physics for projectiles.

zscript/weapons/swwm_baseweapon_fx.zsc

@@ -2,6 +2,8 @@
 
 Class SWWMCasing : Actor abstract
 {
+	Mixin SWWMMissileFix;
+
 	SWWMCasing prevcasing, nextcasing;
 	bool killme;
 	int numbounces;
@@ -23,6 +25,7 @@ Class SWWMCasing : Actor abstract
 		+ROLLSPRITE;
 		+ROLLCENTER;
 		+SYNCHRONIZED;
+		+CANBOUNCEWATER;
 		Mass 1;
 		Gravity 0.35;
 		BounceType "Hexen";
@@ -51,7 +54,6 @@ Class SWWMCasing : Actor abstract
 		if ( killme ) A_FadeOut(.01);
 		if ( waterlevel > 0 )
 		{
-			vel.xy *= .98;
 			anglevel *= .98;
 			pitchvel *= .98;
 		}
@@ -89,6 +91,9 @@ Class SWWMCasing : Actor abstract
 			bINTERPOLATEANGLES = false;
 			pitch = roll = 0;
 			angle = FRandom[Junk](0,360);
+			// disappear if we fell into a terrain with floor clip
+			if ( GetFloorTerrain().footclip > 0 )
+				Destroy();
 		}
 		Stop;
 	}

zscript/weapons/swwm_blazeit_fx.zsc

@@ -82,6 +82,7 @@ Class HellblazerArm : Actor
 		+NODAMAGETHRUST;
 		+FORCERADIUSDMG;
 		-NOGRAVITY;
+		+NOFRICTION;
 		Gravity 0.35;
 		BounceFactor 1.0;
 		Radius 4;
@@ -179,6 +180,8 @@ Class HellblazerFlare : SWWMNonInteractiveActor
 // rockets
 Class HellblazerMissile : Actor
 {
+	Mixin SWWMMissileFix;
+
 	int deto;
 	Actor seektarget;
 	Vector3 InitialDir, Acceleration;

zscript/weapons/swwm_danmaku_fx.zsc

@@ -121,6 +121,8 @@ Class EvisceratorChunkTrail : SWWMNonInteractiveActor
 
 Class EvisceratorChunk : Actor
 {
+	Mixin SWWMMissileFix;
+
 	Actor lasthit;
 	double anglevel, pitchvel, rollvel;
 	double lifetime, lifespeed;
@@ -424,6 +426,8 @@ Class EvisceratorProjLight : PaletteLight
 
 Class EvisceratorProj : Actor
 {
+	Mixin SWWMMissileFix;
+
 	double heat;
 	Vector3 startpos;
 	Default

zscript/weapons/swwm_deathlydeathcannon_fx.zsc

@@ -220,6 +220,7 @@ Class YnykronImpactArm : Actor
 		+NODAMAGETHRUST;
 		+FORCERADIUSDMG;
 		-NOGRAVITY;
+		+NOFRICTION;
 		Gravity 0.35;
 		BounceFactor 1.0;
 		Radius 2;
@@ -1927,6 +1928,7 @@ Class YnykronSingularityExplosionArm : Actor
 		+NODAMAGETHRUST;
 		+FORCERADIUSDMG;
 		-NOGRAVITY;
+		+NOFRICTION;
 		Gravity 0.35;
 		BounceFactor 1.0;
 		Radius 2;

zscript/weapons/swwm_deepdarkimpact_fx.zsc

@@ -17,6 +17,7 @@ Class AirBullet : FastProjectile
 		+FORCERADIUSDMG;
 		+NODAMAGETHRUST;
 		+RIPPER;
+		+NOFRICTION;
 	}
 	override void PostBeginPlay()
 	{

zscript/weapons/swwm_sparkyboi_fx.zsc

@@ -372,6 +372,7 @@ Class BigBiospark : Actor
 		+BOUNCEONFLOORS;
 		+BOUNCEONCEILINGS;
 		+CANBOUNCEWATER;
+		+NOFRICTION;
 	}
 	States
 	{
@@ -408,6 +409,7 @@ Class BiosparkBall : Actor
 		+NODAMAGETHRUST;
 		+EXPLODEONWATER;
 		+FORCEXYBILLBOARD;
+		+NOFRICTION;
 	}
 	override void PostBeginPlay()
 	{
@@ -1574,6 +1576,8 @@ Class BiosparkSpark : SWWMNonInteractiveActor
 
 Class BiosparkCore : Actor
 {
+	Mixin SWWMMissileFix;
+
 	Vector3 oldvel;
 	double anglevel, pitchvel, rollvel;
 

zscript/weapons/swwm_splode_fx.zsc

@@ -45,6 +45,7 @@ Class ExplodiumMagArm : Actor
 		+NODAMAGETHRUST;
 		+FORCERADIUSDMG;
 		-NOGRAVITY;
+		+NOFRICTION;
 		Gravity 0.35;
 		BounceFactor 1.0;
 		Radius 2;
@@ -102,6 +103,8 @@ Class ExplodiumMagTrail : SWWMNonInteractiveActor
 
 Class ExplodiumMagProj : Actor
 {
+	Mixin SWWMMissileFix;
+
 	double pitchvel, anglevel;
 	Vector3 cvel;
 

zscript/weapons/swwm_tastytreat_fx.zsc

@@ -325,6 +325,7 @@ Class CandyMagArm : Actor
 		+FORCERADIUSDMG;
 		-NOGRAVITY;
 		+FOILINVUL;
+		+NOFRICTION;
 		Gravity 0.35;
 		BounceFactor 1.0;
 		Radius 2;
@@ -463,6 +464,8 @@ Class CandyMagArmBig : CandyMagArm
 
 Class CandyGunProj : Actor
 {
+	Mixin SWWMMissileFix;
+
 	double pitchvel, anglevel;
 	Vector3 cvel;
 
@@ -600,6 +603,8 @@ Class CandyGunProj : Actor
 
 Class CandyMagProj : Actor
 {
+	Mixin SWWMMissileFix;
+
 	double pitchvel, anglevel;
 	Vector3 cvel;