Ports the radiation subsystem and cleans up damage flags. (#15715)

code/modules/cooking/machinery/cooking_machines/_appliance.dm

@@ -32,7 +32,7 @@
 	var/cooking						// Whether or not the machine is currently operating.
 	var/cook_type					// A string value used to track what kind of food this machine makes.
 	var/can_cook_mobs				// Whether or not this machine accepts grabbed mobs.
-	var/mobdamagetype = BRUTE		// Burn damage for cooking appliances, brute for cereal/candy
+	var/mobdamagetype = DAMAGE_BRUTE		// Burn damage for cooking appliances, brute for cereal/candy
 	var/food_color					// Colour of resulting food item.
 	var/cooked_sound = 'sound/machines/ding.ogg'				// Sound played when cooking completes.
 	var/can_burn_food				// Can the object burn food that is left inside?

code/modules/cooking/machinery/cooking_machines/_cooker.dm

@@ -11,7 +11,7 @@
 
 	var/light_x = 0
 	var/light_y = 0
-	mobdamagetype = BURN
+	mobdamagetype = DAMAGE_BURN
 	cooking_coeff = 0
 	cooking_power = 0
 	flags = null

code/modules/cooking/machinery/cooking_machines/fryer.dm

@@ -180,7 +180,7 @@
 
 			E.take_damage(0, damage, used_weapon = "hot oil")
 		else
-			victim.apply_damage(damage, BURN, user.zone_sel.selecting)
+			victim.apply_damage(damage, DAMAGE_BURN, user.zone_sel.selecting)
 
 		if(!nopain)
 			var/arrows_var1 = E ? E.name : "flesh"