adds shadowshrooms from tgstation, nerf glowshroom glow a bit and add new vars for glow, add new shadow and red light genes

code/modules/hydroponics/grown/mushrooms.dm

@@ -220,7 +220,7 @@
 	rarity = 20
 	genes = list(/datum/plant_gene/trait/glow, /datum/plant_gene/trait/plant_type/fungal_metabolism)
 	growing_icon = 'icons/obj/hydroponics/growing_mushrooms.dmi'
-	mutatelist = list(/obj/item/seeds/glowshroom/glowcap)
+	mutatelist = list(/obj/item/seeds/glowshroom/glowcap, /obj/item/seeds/glowshroom/shadowshroom)
 	reagents_add = list("radium" = 0.1, "phosphorus" = 0.1, "nutriment" = 0.04)
 
 /obj/item/weapon/reagent_containers/food/snacks/grown/mushroom/glowshroom
@@ -236,11 +236,21 @@
 /obj/item/weapon/reagent_containers/food/snacks/grown/mushroom/glowshroom/attack_self(mob/user)
 	if(istype(user.loc, /turf/space))
 		return
-	var/obj/effect/glowshroom/planted = new effect_path(user.loc)
-	planted.delay = planted.delay - seed.production * 100 //So the delay goes DOWN with better stats instead of up. :I
-	planted.endurance = seed.endurance
-	planted.yield = seed.yield
-	planted.potency = seed.potency
+	if(!isturf(user.loc))
+		to_chat(user, "<span class='warning'>You need more space to plant [src].</span>")
+		return
+	var/count = 0
+	var/maxcount = 1
+	for(var/tempdir in cardinal)
+		var/turf/simulated/wall = get_step(user.loc, tempdir)
+		if(istype(wall))
+			maxcount++
+	for(var/obj/effect/glowshroom/G in user.loc)
+		count++
+	if(count >= maxcount)
+		to_chat(user, "<span class='warning'>There are too many shrooms here to plant [src].</span>")
+		return
+	new effect_path(user.loc, seed)
 	to_chat(user, "<span class='notice'>You plant [src].</span>")
 	qdel(src)
 
@@ -255,7 +265,7 @@
 	icon_dead = "glowshroom-dead"
 	plantname = "Glowcaps"
 	product = /obj/item/weapon/reagent_containers/food/snacks/grown/mushroom/glowshroom/glowcap
-	genes = list(/datum/plant_gene/trait/glow, /datum/plant_gene/trait/cell_charge, /datum/plant_gene/trait/plant_type/fungal_metabolism)
+	genes = list(/datum/plant_gene/trait/glow/red, /datum/plant_gene/trait/cell_charge, /datum/plant_gene/trait/plant_type/fungal_metabolism)
 	mutatelist = list()
 	reagents_add = list("teslium" = 0.1, "nutriment" = 0.04)
 	rarity = 30
@@ -263,7 +273,7 @@
 /obj/item/weapon/reagent_containers/food/snacks/grown/mushroom/glowshroom/glowcap
 	seed = /obj/item/seeds/glowshroom/glowcap
 	name = "glowcap cluster"
-	desc = "<I>Mycena Ruthenia</I>: This species of mushroom glows in the dark, but aren't bioluminescent. They're warm to the touch..."
+	desc = "<I>Mycena Ruthenia</I>: This species of mushroom glows in the dark, but isn't actually bioluminescent. They're warm to the touch..."
 	icon_state = "glowcap"
 	filling_color = "#00FA9A"
 	effect_path = /obj/effect/glowshroom/glowcap
@@ -292,3 +302,26 @@
 	desc = "A fungus ideal for making antibacterials."
 	icon_state = "angel"
 	color = "#4f4331"
+
+//Shadowshroom
+/obj/item/seeds/glowshroom/shadowshroom
+	name = "pack of shadowshroom mycelium"
+	desc = "This mycelium will grow into something shadowy."
+	icon_state = "mycelium-shadowshroom"
+	species = "shadowshroom"
+	icon_grow = "shadowshroom-grow"
+	icon_dead = "shadowshroom-dead"
+	plantname = "Shadowshrooms"
+	product = /obj/item/weapon/reagent_containers/food/snacks/grown/mushroom/glowshroom/shadowshroom
+	genes = list(/datum/plant_gene/trait/glow/shadow, /datum/plant_gene/trait/plant_type/fungal_metabolism)
+	mutatelist = list()
+	reagents_add = list("radium" = 0.2, "nutriment" = 0.04)
+	rarity = 30
+
+/obj/item/weapon/reagent_containers/food/snacks/grown/mushroom/glowshroom/shadowshroom
+	seed = /obj/item/seeds/glowshroom/shadowshroom
+	name = "shadowshroom cluster"
+	desc = "<I>Mycena Umbra</I>: This species of mushroom emits shadow instead of light."
+	icon_state = "shadowshroom"
+	effect_path = /obj/effect/glowshroom/shadowshroom
+	origin_tech = "biotech=4;plasmatech=4;magnets=4"

code/modules/hydroponics/hydroponics.dm

@@ -300,7 +300,7 @@
 	if(!self_sustaining)
 		if(myseed && myseed.get_gene(/datum/plant_gene/trait/glow))
 			var/datum/plant_gene/trait/glow/G = myseed.get_gene(/datum/plant_gene/trait/glow)
-			set_light(G.get_lum(myseed))
+			set_light(G.glow_range(myseed), G.glow_power(myseed), G.glow_color)
 		else
 			set_light(0)
 

code/modules/hydroponics/plant_genes.dm

@@ -263,23 +263,40 @@
 
 /datum/plant_gene/trait/glow
 	// Makes plant glow. Makes plant in tray glow too.
-	// Adds potency*rate luminosity to products.
+	// Adds 1 + potency*rate light range and potency*(rate + 0.01) light_power to products.
 	name = "Bioluminescence"
-	rate = 0.1
+	rate = 0.03
 	examine_line = "<span class='info'>It emits a soft glow.</span>"
 	trait_id = "glow"
+	var/glow_color = "#AAD84B"
 
-/datum/plant_gene/trait/glow/proc/get_lum(obj/item/seeds/S)
-	return round(S.potency*rate)
+/datum/plant_gene/trait/glow/proc/glow_range(obj/item/seeds/S)
+	return 1.4 + S.potency*rate
+
+/datum/plant_gene/trait/glow/proc/glow_power(obj/item/seeds/S)
+	return max(S.potency*(rate + 0.01), 0.1)
 
 /datum/plant_gene/trait/glow/on_new(obj/item/weapon/reagent_containers/food/snacks/grown/G, newloc)
 	..()
-	G.set_light(get_lum(G.seed))
+	G.set_light(glow_range(G.seed), glow_power(G.seed), glow_color)
+
+/datum/plant_gene/trait/glow/shadow
+	//makes plant emit slightly purple shadows
+	//adds -potency*(rate*0.2) light power to products
+	name = "Shadow Emission"
+	rate = 0.04
+
+/datum/plant_gene/trait/glow/shadow/glow_power(obj/item/seeds/S)
+	return -max(S.potency*(rate*0.2), 0.2)
+
+/datum/plant_gene/trait/glow/red
+	name = "Red Electrical Glow"
+	glow_color = LIGHT_COLOR_RED
 
 /datum/plant_gene/trait/glow/berry
 	name = "Strong Bioluminescence"
-	rate = 0.2
-
+	rate = 0.05
+	glow_color = null
 
 /datum/plant_gene/trait/teleport
 	// Makes plant teleport people when squashed or slipped on.