Adds Shockwaves to Explosions and Xeno Screeches

code/__DEFINES/layers.dm

@@ -11,6 +11,9 @@
 
 //#define AREA_LAYER 1
 
+#define DISPLACEMENT_PLATE_RENDER_LAYER 1
+#define DISPLACEMENT_PLATE_RENDER_TARGET "*DISPLACEMENT_PLATE_RENDER_TARGET"
+
 #define UNDER_TURF_LAYER 1.99
 
 #define TURF_LAYER 2

code/_onclick/hud/rendering/plane_master.dm

@@ -189,3 +189,10 @@
 	plane = ESCAPE_MENU_PLANE
 	appearance_flags = PLANE_MASTER|NO_CLIENT_COLOR
 	render_relay_plane = RENDER_PLANE_MASTER
+
+/atom/movable/screen/plane_master/displacement
+	name = "displacement plane"
+	mouse_opacity = MOUSE_OPACITY_TRANSPARENT
+	plane = DISPLACEMENT_PLATE_RENDER_LAYER
+	render_target = DISPLACEMENT_PLATE_RENDER_TARGET
+	render_relay_plane = null

code/_onclick/hud/rendering/render_plate.dm

@@ -39,6 +39,10 @@
 	plane = RENDER_PLANE_GAME
 	render_relay_plane = RENDER_PLANE_MASTER
 
+/atom/movable/screen/plane_master/rendering_plate/game_world/Initialize(mapload, datum/hud/hud_owner)
+	. = ..()
+	add_filter("displacer", 1, displacement_map_filter(render_source = DISPLACEMENT_PLATE_RENDER_TARGET, size = 10))
+
 ///render plate for OOC stuff like ghosts, hud-screen effects, etc
 /atom/movable/screen/plane_master/rendering_plate/non_game
 	name = "non-game rendering plate"

code/datums/autocells/explosion.dm

@@ -282,6 +282,9 @@ as having entered the turf.
 	if(QDELETED(E))
 		return
 
+	if(power >= 150) //shockwave for anything over 150 power
+		new /obj/effect/shockwave(epicenter, power/60)
+
 	E.power = power
 	E.power_falloff = falloff
 	E.falloff_shape = falloff_shape

code/game/objects/effects/temporary_visuals.dm

@@ -96,3 +96,26 @@
 	splatter_type = "csplatter"
 	color = BLOOD_COLOR_SYNTHETIC
 
+//------------------------------------------
+//Shockwaves
+//------------------------------------------
+
+/obj/effect/shockwave
+	icon = 'icons/effects/light_overlays/shockwave.dmi'
+	icon_state = "shockwave"
+	plane = DISPLACEMENT_PLATE_RENDER_LAYER
+	pixel_x = -496
+	pixel_y = -496
+
+/obj/effect/shockwave/Initialize(mapload, radius, speed, easing_type = LINEAR_EASING, y_offset, x_offset)
+	. = ..()
+	if(!speed)
+		speed = 1
+	if(y_offset)
+		pixel_y += y_offset
+	if(x_offset)
+		pixel_x += x_offset
+	QDEL_IN(src, 0.5 * radius * speed)
+	transform = matrix().Scale(32 / 1024, 32 / 1024)
+	animate(src, time = 0.5 * radius * speed, transform=matrix().Scale((32 / 1024) * radius * 1.5, (32 / 1024) * radius * 1.5), easing = easing_type)
+

code/modules/mob/living/carbon/xenomorph/Abilities.dm

@@ -142,7 +142,7 @@
 
 	playsound(xeno.loc, pick(xeno.screech_sound_effect_list), 75, 0, status = 0)
 	xeno.visible_message(SPAN_XENOHIGHDANGER("[xeno] emits an ear-splitting guttural roar!"))
-	xeno.create_shriekwave() //Adds the visual effect. Wom wom wom
+	xeno.create_shriekwave(14) //Adds the visual effect. Wom wom wom, 14 shriekwaves
 
 	for(var/mob/mob in view())
 		if(mob && mob.client)

code/modules/mob/living/carbon/xenomorph/abilities/predalien/predalien_powers.dm

@@ -12,8 +12,7 @@
 
 	playsound(xeno.loc, pick(predalien_roar), 75, 0, status = 0)
 	xeno.visible_message(SPAN_XENOHIGHDANGER("[xeno] emits a guttural roar!"))
-	xeno.create_shriekwave(color = "#FF0000")
-
+	xeno.create_shriekwave(7) //Adds the visual effect. Wom wom wom, 7 shriekwaves
 	for(var/mob/living/carbon/carbon in view(7, xeno))
 		if(ishuman(carbon))
 			var/mob/living/carbon/human/human = carbon

code/modules/mob/living/carbon/xenomorph/update_icons.dm

@@ -196,31 +196,46 @@
 		overlays_standing[X_LEGCUFF_LAYER] = image("icon" = 'icons/mob/xenos/effects.dmi', "icon_state" = "legcuff", "layer" =-X_LEGCUFF_LAYER)
 		apply_overlay(X_LEGCUFF_LAYER)
 
-/mob/living/carbon/xenomorph/proc/create_shriekwave(color = null)
-	var/image/screech_image
-
-	var/offset_x = 0
-	var/offset_y = 0
-	if(mob_size <= MOB_SIZE_XENO)
-		offset_x = -7
-		offset_y = -10
-
-	if (color)
-		screech_image = image("icon"='icons/mob/xenos/overlay_effects64x64.dmi', "icon_state" = "shriek_waves_greyscale") // For Praetorian screech
-		screech_image.color = color
-	else
-		screech_image = image("icon"='icons/mob/xenos/overlay_effects64x64.dmi', "icon_state" = "shriek_waves") //Ehh, suit layer's not being used.
-
-	screech_image.pixel_x = offset_x
-	screech_image.pixel_y = offset_y
-
-	screech_image.appearance_flags |= RESET_COLOR
-
-	remove_suit_layer()
-
-	overlays_standing[X_SUIT_LAYER] = screech_image
-	apply_overlay(X_SUIT_LAYER)
-	addtimer(CALLBACK(src, PROC_REF(remove_overlay), X_SUIT_LAYER), 30)
+/mob/living/carbon/xenomorph/proc/create_shriekwave(shriekwaves_left)
+	var/offset_y = 8
+	if(mob_size == MOB_SIZE_XENO)
+		offset_y = 24
+	if(mob_size == MOB_SIZE_IMMOBILE)
+		offset_y = 28
+
+	//the shockwave center is updated eachtime shockwave is called and offset relative to the mob_size.
+	//due to the speed of the shockwaves, it isn't required to be tied to the exact mob movements
+	var/epicenter = loc //center of the shockwave, set at the center of the tile that the mob is currently standing on
+	var/easing = QUAD_EASING | EASE_OUT
+	var/stage1_radius = rand(11, 12)
+	var/stage2_radius = rand(9, 11)
+	var/stage3_radius = rand(8, 10)
+	var/stage4_radius = 7.5
+
+	//shockwaves are iterated, counting down once per shriekwave, with the total amount being determined on the respective xeno ability tile
+	if(shriekwaves_left > 12)
+		shriekwaves_left--
+		new /obj/effect/shockwave(epicenter, stage1_radius, 0.5, easing, offset_y)
+		addtimer(CALLBACK(src, PROC_REF(create_shriekwave), shriekwaves_left), 2)
+		return
+	if(shriekwaves_left > 8)
+		shriekwaves_left--
+		new /obj/effect/shockwave(epicenter, stage2_radius, 0.5, easing, offset_y)
+		addtimer(CALLBACK(src, PROC_REF(create_shriekwave), shriekwaves_left), 3)
+		return
+	if(shriekwaves_left > 4)
+		shriekwaves_left--
+		new /obj/effect/shockwave(epicenter, stage3_radius, 0.5, easing, offset_y)
+		addtimer(CALLBACK(src, PROC_REF(create_shriekwave), shriekwaves_left), 3)
+		return
+	if(shriekwaves_left > 1)
+		shriekwaves_left--
+		new /obj/effect/shockwave(epicenter, stage4_radius, 0.5, easing, offset_y)
+		addtimer(CALLBACK(src, PROC_REF(create_shriekwave), shriekwaves_left), 3)
+		return
+	if(shriekwaves_left == 1)
+		shriekwaves_left--
+		new /obj/effect/shockwave(epicenter, 10.5, 0.6, easing, offset_y)
 
 /mob/living/carbon/xenomorph/proc/create_stomp()
 	remove_suit_layer()