[DNM][DNM][WIP] Projectile backend code port and update

Ports#54924,  #65061, #59804 from /tg.
adds auxiliary code from /tg to make code work.

code/game/objects/effects/effect_system/effects_foam.dm

@@ -291,9 +291,6 @@
 	to_chat(user, "<span class='warning'>You hit [src] but bounce off it!</span>")
 	playsound(src.loc, 'sound/weapons/tap.ogg', 100, 1)
 
-/obj/structure/foamedmetal/CanPass(atom/movable/mover, turf/target)
-	return !density
-
 /obj/structure/foamedmetal/iron
 	max_integrity = 50
 	icon_state = "ironfoam"
@@ -306,6 +303,7 @@
 	icon_state = "atmos_resin"
 	alpha = 120
 	max_integrity = 10
+	pass_flags_self = PASSGLASS
 
 /obj/structure/foamedmetal/resin/Initialize()
 	. = ..()
@@ -336,14 +334,6 @@
 		for(var/obj/item/Item in O)
 			Item.extinguish()
 
-/obj/structure/foamedmetal/resin/CanPass(atom/movable/mover, turf/target)
-	if(istype(mover) && (mover.pass_flags & PASSGLASS))
-		return TRUE
-	. = ..()
-
-/obj/structure/foamedmetal/resin/BlockThermalConductivity()
-	return TRUE
-
 #undef ALUMINUM_FOAM
 #undef IRON_FOAM
 #undef RESIN_FOAM

code/game/objects/effects/effect_system/effects_smoke.dm

@@ -133,13 +133,11 @@
 		M.emote("cough")
 		return 1
 
-/obj/effect/particle_effect/smoke/bad/CanPass(atom/movable/mover, turf/target)
-	if(istype(mover, /obj/item/projectile/beam))
-		var/obj/item/projectile/beam/B = mover
+/obj/effect/particle_effect/smoke/bad/Crossed(atom/movable/AM, oldloc)
+	. = ..()
+	if(istype(AM, /obj/projectile/beam))
+		var/obj/projectile/beam/B = AM
 		B.damage = (B.damage/2)
-	return 1
-
-
 
 /datum/effect_system/smoke_spread/bad
 	effect_type = /obj/effect/particle_effect/smoke/bad