Updates chemmaster

code/modules/reagents/chemistry/machinery/chem_master.dm

@@ -390,6 +390,11 @@
 			if(reagents.total_volume == 0)
 				return
 
+			for(var/datum/reagent/R in beaker.reagents.reagent_list)
+				if(!(istype(R, /datum/reagent/medicine)))
+					visible_message("<b>The [src]</b> beeps, \"<span class='warning'>SmartDarts are insoluble with non-medicinal compounds.\"</span>")
+					return
+
 			var/amount_full = 0
 			var/vol_part = min(reagents.total_volume, 20)
 			if(text2num(many))
@@ -405,12 +410,16 @@
 				P.name = trim("[name] SmartDart")
 				adjust_item_drop_location(P)
 				reagents.trans_to(P, 20)
+				P.mode=!mode
+				P.update_icon()
 
 			if(vol_part)
 				P = new /obj/item/reagent_containers/syringe/dart(drop_location())
 				P.name = trim("[name] SmartDart")
 				adjust_item_drop_location(P)
 				reagents.trans_to(P, vol_part)
+				P.mode=!mode
+				P.update_icon()
 			. = TRUE
 
 		//END CITADEL ADDITIONS

code/modules/reagents/reagent_containers/syringes.dm

@@ -307,7 +307,7 @@
 				var/trans = target.reagents.trans_to(src, amount_per_transfer_from_this)
 
 				to_chat(user, "<span class='notice'>You soak the [src] with [trans] units of the solution. It now contains [reagents.total_volume] units.</span>")
-			if (reagents.total_volume >= reagents.maximum_volume)
+			if (round(reagents.total_volume,1) >= reagents.maximum_volume)
 				mode=!mode
 				update_icon()
 

tgui/src/interfaces/chem_master.ract

@@ -81,6 +81,11 @@
 			<br/>
 			<ui-button action='createVial' params='{"many": 1}' state='{{data.bufferContents ? null : "disabled"}}' >Dispense Buffer to Hypo vials </ui-button>
 			<br/>
+			<br/>
+			<ui-button action='createDart' params='{"many": 0}' state='{{data.bufferContents ? null : "disabled"}}' >Create SmartDart (max 20µ)</ui-button>
+			<br/>
+			<ui-button action='createVial' params='{"many": 1}' state='{{data.bufferContents ? null : "disabled"}}' >Dispense Buffer to SmartDarts </ui-button>
+			<br/>
 			
 	</ui-display>