Warmth is now more granular on sub covered limbs (#57096)

* warmth fixes

* CLANNNNNG

src/character_attire.cpp

@@ -1829,6 +1829,7 @@ std::map<bodypart_id, int> outfit::warmth( const Character &guy ) const
     std::map<bodypart_id, int> total_warmth;
     for( const bodypart_id &bp : guy.get_all_body_parts() ) {
         double warmth_val = 0.0;
+        float limb_coverage = 0.0f;
         const float wetness_pct = guy.get_part_wetness_percentage( bp );
         for( const item &clothing : worn ) {
             if( !clothing.covers( bp ) ) {
@@ -1840,7 +1841,24 @@ std::map<bodypart_id, int> outfit::warmth( const Character &guy ) const
             if( !clothing.made_of( material_wool ) ) {
                 warmth_val *= 1.0 - 0.66 * wetness_pct;
             }
-            total_warmth[bp] += std::round( warmth_val );
+            // calculate how much of the limb the armor ideally covers
+            // idea being that an item that covers the shoulders and torso shouldn't
+            // heat the whole arm like it covers it
+            // TODO: fully configure this per armor entry
+            if( !clothing.has_sublocations() ) {
+                // if it doesn't have sublocations it has 100% covered
+                limb_coverage = 100;
+            } else {
+                for( const sub_bodypart_str_id &sbp : bp->sub_parts ) {
+                    if( !clothing.covers( sbp ) ) {
+                        continue;
+                    }
+
+                    // TODO: handle non 100% sub body part coverages
+                    limb_coverage += sbp->max_coverage;
+                }
+            }
+            total_warmth[bp] += std::round( warmth_val * limb_coverage / 100.0f );
         }
         total_warmth[bp] += guy.get_effect_int( effect_heating_bionic, bp );
     }