Make welders only deal burn damage when lit. (#5695)

Resources/Prototypes/Entities/Objects/Tools/cowtools.yml

@@ -128,6 +128,11 @@
     HeldPrefix: off
   - type: Tool
     speed: 0.05
+  - type: Welder
+    litMeleeDamageBonus:
+      types: # When lit, negate standard melee damage and replace with heat
+        Heat: 0.5
+        Blunt: -10
 
 - type: entity
   name: milkalyzer

Resources/Prototypes/Entities/Objects/Tools/welders.yml

@@ -23,7 +23,6 @@
     damage:
       types:
         Blunt: 10
-        Heat: 10 # Hotfix to make kudzu die.
   - type: ItemStatus
   - type: RefillableSolution
     solution: Welder
@@ -39,6 +38,10 @@
       collection: Welder
     qualities: Welding
   - type: Welder
+    litMeleeDamageBonus:
+      types: # When lit, negate standard melee damage and replace with heat
+        Heat: 10
+        Blunt: -10
   - type: PointLight
     enabled: false
     radius: 1.5