R&D UI rework

code/game/objects/items/stacks/sheets/glass.dm

@@ -18,7 +18,7 @@
 	desc = "HOLY SHEET! That is a lot of glass."
 	singular_name = "glass sheet"
 	icon_state = "sheet-glass"
-	g_amt = 3750
+	g_amt = MINERAL_MATERIAL_AMOUNT
 	origin_tech = "materials=1"
 	var/created_window = /obj/structure/window/basic
 	var/full_window = /obj/structure/window/full/basic
@@ -127,8 +127,8 @@
 	desc = "Glass which seems to have rods or something stuck in them."
 	singular_name = "reinforced glass sheet"
 	icon_state = "sheet-rglass"
-	g_amt = 3750
-	m_amt = 1875
+	g_amt = MINERAL_MATERIAL_AMOUNT
+	m_amt = MINERAL_MATERIAL_AMOUNT / 2
 	origin_tech = "materials=2"
 	var/created_window = /obj/structure/window/reinforced
 	var/full_window = /obj/structure/window/full/reinforced
@@ -246,7 +246,7 @@
 	desc = "A very strong and very resistant sheet of a plasma-glass alloy."
 	singular_name = "glass sheet"
 	icon_state = "sheet-plasmaglass"
-	g_amt = 7500
+	g_amt = MINERAL_MATERIAL_AMOUNT * 2
 	origin_tech = "materials=3;plasma=2"
 	var/created_window = /obj/structure/window/plasmabasic
 	var/full_window = /obj/structure/window/full/plasmabasic
@@ -335,8 +335,8 @@
 	desc = "Plasma glass which seems to have rods or something stuck in them."
 	singular_name = "reinforced plasma glass sheet"
 	icon_state = "sheet-plasmarglass"
-	g_amt = 7500
-	m_amt = 1875
+	g_amt = MINERAL_MATERIAL_AMOUNT * 2
+	m_amt = MINERAL_MATERIAL_AMOUNT / 2
 	origin_tech = "materials=4;plasma=2"
 	var/created_window = /obj/structure/window/plasmareinforced
 	var/full_window = /obj/structure/window/full/plasmareinforced

code/game/objects/items/stacks/sheets/sheets.dm

@@ -8,7 +8,7 @@
 	throw_speed = 3
 	throw_range = 3
 	attack_verb = list("bashed", "battered", "bludgeoned", "thrashed", "smashed")
-	var/perunit = 3750
+	var/perunit = MINERAL_MATERIAL_AMOUNT
 	var/sheettype = null //this is used for girders in the creation of walls/false walls