From f38a322912dcd9edb72f8d4a9449dc3143970eb6 Mon Sep 17 00:00:00 2001
From: rlebell33 <rlebell33@gmail.com>
Date: Sat, 22 Nov 2025 13:13:35 -0600
Subject: [PATCH] Improve hitboxes for knives and shivs to better match their
 sprites (#39100)

* update hitbox for kitchen knife and butcher's cleaver

* update hitbox for the 4 glass type shivs

* update hitbox for the medical shiv

* Update the hitbox for the plastic knife

* review

---------

Co-authored-by: slarticodefast <161409025+slarticodefast@users.noreply.github.com>
---
 .../Entities/Objects/Misc/utensils.yml        | 11 +++++
 .../Objects/Specific/Medical/surgery.yml      | 11 +++++
 .../Entities/Objects/Weapons/Melee/knife.yml  | 43 ++++++++++++++++++-
 3 files changed, 64 insertions(+), 1 deletion(-)

diff --git a/Resources/Prototypes/Entities/Objects/Misc/utensils.yml b/Resources/Prototypes/Entities/Objects/Misc/utensils.yml
index e735b2dcdd..9c9156ec50 100644
--- a/Resources/Prototypes/Entities/Objects/Misc/utensils.yml
+++ b/Resources/Prototypes/Entities/Objects/Misc/utensils.yml
@@ -130,6 +130,17 @@
     - Plastic
     - Trash
     - Knife
+  - type: Fixtures
+    fixtures:
+      fix1:
+        shape: !type:PhysShapeAabb
+          bounds: "-0.1,-0.375,0.1,0.375"
+        density: 20 # derived from base_item
+        mask:
+        - ItemMask
+        restitution: 0.3
+        friction: 0.2
+
 
 - type: entity
   parent: UtensilBase
diff --git a/Resources/Prototypes/Entities/Objects/Specific/Medical/surgery.yml b/Resources/Prototypes/Entities/Objects/Specific/Medical/surgery.yml
index 482809dd61..79fb907a7c 100644
--- a/Resources/Prototypes/Entities/Objects/Specific/Medical/surgery.yml
+++ b/Resources/Prototypes/Entities/Objects/Specific/Medical/surgery.yml
@@ -101,6 +101,17 @@
     state: shiv
   - type: Item
     heldPrefix: shiv
+  - type: Fixtures
+    fixtures:
+      fix1:
+        shape: !type:PhysShapeAabb
+          bounds: "-0.375,-0.15,0.35,0.12"
+        density: 20 # derived from base_item
+        mask:
+        - ItemMask
+        restitution: 0.3
+        friction: 0.2
+
 
 - type: entity
   name: advanced scalpel
diff --git a/Resources/Prototypes/Entities/Objects/Weapons/Melee/knife.yml b/Resources/Prototypes/Entities/Objects/Weapons/Melee/knife.yml
index bd20659696..0311cabf8f 100644
--- a/Resources/Prototypes/Entities/Objects/Weapons/Melee/knife.yml
+++ b/Resources/Prototypes/Entities/Objects/Weapons/Melee/knife.yml
@@ -49,6 +49,20 @@
     guides:
     - Chef
     - FoodRecipes
+  - type: Fixtures
+    fixtures:
+      fix1:
+        shape: !type:PolygonShape
+          vertices:
+          - -0.475,-0.225
+          - -0.225,-0.475
+          - 0.525,0.275
+          - 0.275,0.525
+        density: 20 # derived from base_item
+        mask:
+        - ItemMask
+        restitution: 0.3
+        friction: 0.2
 
 - type: entity
   name: butcher's cleaver
@@ -76,6 +90,20 @@
     guides:
     - Chef
     - FoodRecipes
+  - type: Fixtures
+    fixtures:
+      fix1:
+        shape: !type:PolygonShape
+          vertices:
+          - -0.58,-0.12
+          - -0.34,-0.55
+          - 0.6,-0.075
+          - 0.375,0.375
+        density: 20 # derived from base_item
+        mask:
+        - ItemMask
+        restitution: 0.3
+        friction: 0.2
 
 - type: entity
   name: combat knife
@@ -117,7 +145,6 @@
     fixtures:
       fix1:
         shape: !type:PolygonShape
-          radius: 0.01
           vertices:
           - -0.4,-0.2
           - -0.2,-0.4
@@ -227,6 +254,20 @@
     sprite: Objects/Weapons/Melee/shiv.rsi
   - type: DisarmMalus
     malus: 0.225
+  - type: Fixtures
+    fixtures:
+      fix1:
+        shape: !type:PolygonShape
+          vertices:
+          - -0.365,-0.265
+          - 0.077,-0.45
+          - 0.364,0.323
+          - -0.0735,0.49
+        density: 20 # derived from base_item
+        mask:
+        - ItemMask
+        restitution: 0.3
+        friction: 0.2
 
 - type: entity
   name: reinforced shiv