Functionality for armor draining energy when taking damage (#66374)

* Flag to use charges when hit * use power when hit * use power when hit flag * Update flag.cpp * Update flag.h * Update tool_armor.json * Update character_armor.cpp * Update character_armor.cpp * Update character_armor.cpp * handle running out of energy * Update src/character_armor.cpp Co-authored-by: github-actions[bot] <41898282+github-actions[bot]@users.noreply.github.com> * Update src/character_armor.cpp Co-authored-by: github-actions[bot] <41898282+github-actions[bot]@users.noreply.github.com> --------- Co-authored-by: github-actions[bot] <41898282+github-actions[bot]@users.noreply.github.com>
CleverRaven · Jun 26, 2023 · f13d34a · f13d34a
1 parent b9ee35e
commit f13d34a
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Showing 5 changed files with 24 additions and 4 deletions.
diff --git a/data/json/flags.json b/data/json/flags.json
@@ -2223,5 +2223,10 @@
     "id": "REBREATHER_CART",
     "type": "json_flag",
     "info": "A filter for a rebreather."
+  },
+  {
+    "id": "USE_POWER_WHEN_HIT",
+    "type": "json_flag",
+    "info": "This armor <info>expends energy when hit</info>."
   }
 ]
diff --git a/data/json/items/tool_armor.json b/data/json/items/tool_armor.json
@@ -1343,10 +1343,11 @@
       "USE_UPS",
       "NO_UNLOAD",
       "COMBAT_TOGGLEABLE",
-      "UNBREAKABLE_MELEE"
+      "UNBREAKABLE_MELEE",
+      "USE_POWER_WHEN_HIT"
     ],
     "material": [ "hyperweave_on", "carbide" ],
-    "power_draw": "250 W",
+    "power_draw": "100 W",
     "revert_to": "rm13_armor",
     "use_action": [ "RM13ARMOR_ON" ],
     "environmental_protection": 40,

diff --git a/src/character_armor.cpp b/src/character_armor.cpp
@@ -245,7 +245,13 @@ bool Character::armor_absorb( damage_unit &du, item &armor, const bodypart_id &b
     if( roll > armor.get_coverage( sbp, ctype ) ) {
         return false;
     }
-
+    // if this armor has the flag, try to deduct that much energy from it. If that takes it to 0 energy, turn it off before it absorbs damage.
+    if( armor.has_flag( flag_USE_POWER_WHEN_HIT ) &&
+        units::from_kilojoule( du.amount ) > armor.energy_consume( units::from_kilojoule( du.amount ),
+                pos(), nullptr ) ) {
+        armor.deactivate( nullptr, false );
+        add_msg_if_player( _( "Your %s doesn't have enough power and shuts down!" ), armor.tname() );
+    }
     // reduce the damage
     // -1 is passed as roll so that each material is rolled individually
     armor.mitigate_damage( du, sbp, -1 );
@@ -267,7 +273,13 @@ bool Character::armor_absorb( damage_unit &du, item &armor, const bodypart_id &b
     if( roll > armor.get_coverage( bp, ctype ) ) {
         return false;
     }
-
+    // if this armor has the flag, try to deduct that much energy from it. If that takes it to 0 energy, turn it off before it absorbs damage.
+    if( armor.has_flag( flag_USE_POWER_WHEN_HIT ) &&
+        units::from_kilojoule( du.amount ) > armor.energy_consume( units::from_kilojoule( du.amount ),
+                pos(), nullptr ) ) {
+        armor.deactivate( nullptr, false );
+        add_msg_if_player( _( "Your %s doesn't have enough power and shuts down!" ), armor.tname() );
+    }
     // reduce the damage
     // -1 is passed as roll so that each material is rolled individually
     armor.mitigate_damage( du, bp, -1 );

diff --git a/src/flag.cpp b/src/flag.cpp
@@ -334,6 +334,7 @@ const flag_id flag_URSINE_HONEY( "URSINE_HONEY" );
 const flag_id flag_USES_BIONIC_POWER( "USES_BIONIC_POWER" );
 const flag_id flag_USE_EAT_VERB( "USE_EAT_VERB" );
 const flag_id flag_USE_PLAYER_ENERGY( "USE_PLAYER_ENERGY" );
+const flag_id flag_USE_POWER_WHEN_HIT( "USE_POWER_WHEN_HIT" );
 const flag_id flag_USE_UPS( "USE_UPS" );
 const flag_id flag_VARSIZE( "VARSIZE" );
 const flag_id flag_VEHICLE( "VEHICLE" );

diff --git a/src/flag.h b/src/flag.h
@@ -339,6 +339,7 @@ extern const flag_id flag_URSINE_HONEY;
 extern const flag_id flag_USES_BIONIC_POWER;
 extern const flag_id flag_USE_EAT_VERB;
 extern const flag_id flag_USE_PLAYER_ENERGY;
+extern const flag_id flag_USE_POWER_WHEN_HIT;
 extern const flag_id flag_USE_UPS;
 extern const flag_id flag_VARSIZE;
 extern const flag_id flag_VEHICLE;