Reasonable incendiary ammo & dragon's breath (#73069)

* Incendiary only a chance to give target onfire effect Flesh burns less well than wood/paper/veggy/etc * Multi-projectile shots don't apply ammo effects multiple times * Replace dragon's breath huge fire chance with a reasonable one Add new effect that looks like previous fire effect * Migrate most INCENDIARY effects to IGNITE * Add multi_projectile_effects to gauss shotgun
CleverRaven · Apr 29, 2024 · f9b9163 · f9b9163
1 parent 07f9919
commit f9b9163
Show file tree

Hide file tree

Showing 27 changed files with 119 additions and 57 deletions.
diff --git a/data/json/ammo_effects.json b/data/json/ammo_effects.json
@@ -86,12 +86,14 @@
   {
     "id": "INCENDIARY",
     "type": "ammo_effect",
-    "//": "Creature, that got hit with this projectile, would be ignited for a short duration, up to 4 seconds, (6 if creature is made out of flammable material or made out of veggy). Hardcoded"
+    "//": "Creature, that got hit with this projectile, would be ignited for a short duration, up to 4 seconds, (6 if creature is made out of flammable material or made out of veggy). Hardcoded in projectile::apply_effects_damage",
+    "//2": "10% chance to start fires on flammable (has flag FLAMMABLE_ASH) furniture/terrain **with defined shoot data**, hardcoded in map::shoot"
   },
   {
     "id": "IGNITE",
     "type": "ammo_effect",
-    "//": "Same as INCENDIARY, creature that got hit with this projectile, would be ignited for a short duration, up to 6 seconds, (10 if creature is made out of flammable material or made out of veggy). Hardcoded"
+    "//": "Same as INCENDIARY, creature that got hit with this projectile, would be ignited for a short duration, up to 6 seconds, (10 if creature is made out of flammable material or made out of veggy). Hardcoded",
+    "//2": "Guaranteed to start fires on flammable (has flag FLAMMABLE_ASH) furniture/terrain **with defined shoot data**, hardcoded in map::shoot"
   },
   {
     "id": "JET",
@@ -389,6 +391,12 @@
     "//": "Creates a trail of smoke",
     "trail": { "field_type": "fd_smoke", "intensity_min": 1, "intensity_max": 2, "chance": 75 }
   },
+  {
+    "id": "STREAM_TINY",
+    "type": "ammo_effect",
+    "//": "Sometimes leaves a trail of small fire fields. All of these STREAM_XXXXXX effects have hardcoded interactions in projectile_attack (ballistics.cpp)",
+    "trail": { "field_type": "fd_fire", "intensity_min": 1, "intensity_max": 1, "chance": 10 }
+  },
   {
     "id": "STREAM",
     "type": "ammo_effect",
@@ -401,6 +409,12 @@
     "//": "Leaves a trail of intense fire fields",
     "trail": { "field_type": "fd_fire", "intensity_min": 2, "intensity_max": 2, "chance": 75 }
   },
+  {
+    "id": "PYROTECHNIC_DISPLAY",
+    "type": "ammo_effect",
+    "//": "Looks like huge fires, but doesn't actually burn stuff.",
+    "trail": { "field_type": "fd_fire_FAKE", "intensity_min": 1, "intensity_max": 3, "chance": 85 }
+  },
   {
     "id": "STREAM_GAS_FUNGICIDAL",
     "type": "ammo_effect",

diff --git a/data/json/field_type.json b/data/json/field_type.json
@@ -333,6 +333,21 @@
     "display_items": false,
     "display_field": true
   },
+  {
+    "id": "fd_fire_FAKE",
+    "looks_like": "fd_fire",
+    "type": "field_type",
+    "intensity_levels": [
+      { "name": "glittering embers", "sym": "4", "color": "yellow", "light_emitted": 5, "translucency": 0.7 },
+      { "name": "spark shower", "color": "light_red", "light_emitted": 15, "translucency": 0.4 },
+      { "name": "wall of flames", "color": "red", "light_emitted": 40, "translucency": 0.1 }
+    ],
+    "priority": 4,
+    "half_life": "1 seconds",
+    "phase": "plasma",
+    "display_items": false,
+    "display_field": true
+  },
   {
     "id": "fd_extinguisher",
     "type": "field_type",

diff --git a/data/json/items/ammo/shot.json b/data/json/items/ammo/shot.json
@@ -178,7 +178,7 @@
     "price": "10 USD",
     "price_postapoc": "16 USD",
     "proportional": { "damage": { "damage_type": "bullet", "amount": 0.2 }, "recoil": 0.6, "loudness": 0.8, "range": 0.5 },
-    "extend": { "effects": [ "INCENDIARY", "STREAM", "NOGIB" ] }
+    "extend": { "effects": [ "INCENDIARY", "STREAM_TINY", "PYROTECHNIC_DISPLAY", "NOGIB" ] }
   },
   {
     "id": "shot_flechette",

diff --git a/data/json/items/fuel.json b/data/json/items/fuel.json
@@ -76,7 +76,7 @@
     "ammo_type": "diesel",
     "damage": { "damage_type": "heat", "amount": 5, "armor_penetration": 4 },
     "range": 4,
-    "effects": [ "FLAME", "STREAM", "INCENDIARY", "NEVER_MISFIRES" ]
+    "effects": [ "FLAME", "STREAM", "IGNITE", "NEVER_MISFIRES" ]
   },
   {
     "id": "jp8",
@@ -99,7 +99,7 @@
     "ammo_type": "jp8",
     "damage": { "damage_type": "heat", "amount": 5, "armor_penetration": 5 },
     "range": 4,
-    "effects": [ "FLAME", "STREAM", "INCENDIARY", "NEVER_MISFIRES" ]
+    "effects": [ "FLAME", "STREAM", "IGNITE", "NEVER_MISFIRES" ]
   },
   {
     "id": "avgas",
@@ -122,7 +122,7 @@
     "ammo_type": "avgas",
     "damage": { "damage_type": "heat", "amount": 5, "armor_penetration": 5 },
     "range": 4,
-    "effects": [ "FLAME", "STREAM", "INCENDIARY", "NEVER_MISFIRES" ]
+    "effects": [ "FLAME", "STREAM", "IGNITE", "NEVER_MISFIRES" ]
   },
   {
     "id": "biodiesel",
@@ -155,7 +155,7 @@
     "ammo_type": "gasoline",
     "damage": { "damage_type": "heat", "amount": 5, "armor_penetration": 5 },
     "range": 4,
-    "effects": [ "FLAME", "STREAM", "INCENDIARY", "NEVER_MISFIRES" ]
+    "effects": [ "FLAME", "STREAM", "IGNITE", "NEVER_MISFIRES" ]
   },
   {
     "id": "lamp_oil",
@@ -223,7 +223,7 @@
     "ammo_type": "flammable",
     "damage": { "damage_type": "heat", "amount": 15, "armor_penetration": 30 },
     "range": 6,
-    "effects": [ "FLAME", "STREAM_BIG", "INCENDIARY", "NEVER_MISFIRES" ]
+    "effects": [ "FLAME", "STREAM_BIG", "IGNITE", "NEVER_MISFIRES" ]
   },
   {
     "id": "gelled_gasoline",

diff --git a/data/json/items/gun/ups.json b/data/json/items/gun/ups.json
@@ -66,7 +66,7 @@
     "energy_drain": "20 kJ",
     "reload": 0,
     "modes": [ [ "DEFAULT", "3 rd.", 3 ], [ "BURST", "5 rd.", 5 ], [ "AUTO", "high auto", 15 ] ],
-    "ammo_effects": [ "LASER", "PLASMA_BUBBLE", "INCENDIARY" ],
+    "ammo_effects": [ "LASER", "PLASMA_BUBBLE", "IGNITE" ],
     "flags": [ "NO_UNLOAD", "NEVER_JAMS", "NO_UNWIELD", "NO_SALVAGE", "NO_REPAIR", "UNBREAKABLE_MELEE", "NON_FOULING", "USE_UPS" ],
     "overheat_threshold": 200,
     "cooling_value": 2,
@@ -97,7 +97,7 @@
     "loudness": 1,
     "energy_drain": "50 kJ",
     "reload": 0,
-    "ammo_effects": [ "LASER", "PLASMA_BUBBLE", "INCENDIARY" ],
+    "ammo_effects": [ "LASER", "PLASMA_BUBBLE", "IGNITE" ],
     "flags": [
       "NO_UNLOAD",
       "NEVER_JAMS",
@@ -154,7 +154,7 @@
       [ "stock accessory", 1 ],
       [ "underbarrel", 1 ]
     ],
-    "ammo_effects": [ "LASER", "INCENDIARY" ],
+    "ammo_effects": [ "LASER", "IGNITE" ],
     "flags": [ "NEVER_JAMS", "NO_UNLOAD", "NON_FOULING", "NEEDS_NO_LUBE", "USE_UPS", "OVERHEATS" ],
     "faults": [ "fault_overheat_melting", "fault_overheat_safety" ],
     "melee_damage": { "bash": 12 }

diff --git a/data/mods/Aftershock/ammo_effects.json b/data/mods/Aftershock/ammo_effects.json
@@ -40,5 +40,10 @@
     "id": "SEISMIC_MAPPING",
     "type": "ammo_effect",
     "aoe": { "field_type": "fd_clairvoyant", "intensity_min": 10, "intensity_max": 10 }
+  },
+  {
+    "id": "MULTI_EFFECTS",
+    "type": "ammo_effect",
+    "//": "Applies multi_projectile_effects to all ammo used by this weapon, even if the ammo doesn't normally have it. Hardcoded in projectile_attack (ranged.cpp)"
   }
 ]
diff --git a/data/mods/Aftershock/items/ammo/flashbulb.json b/data/mods/Aftershock/items/ammo/flashbulb.json
@@ -19,6 +19,6 @@
     "recoil": 45,
     "count": 4,
     "stack_size": 1,
-    "effects": [ "COOKOFF", "NEVER_MISFIRES", "LASER", "INCENDIARY", "DAZZLE_BEAM", "PUMP_LASER", "PLASMA_BUBBLE" ]
+    "effects": [ "COOKOFF", "NEVER_MISFIRES", "LASER", "IGNITE", "DAZZLE_BEAM", "PUMP_LASER", "PLASMA_BUBBLE" ]
   }
 ]
diff --git a/data/mods/Aftershock/items/ammo/plasma.json b/data/mods/Aftershock/items/ammo/plasma.json
@@ -15,6 +15,6 @@
     "ammo_type": "afs_shydrogen",
     "range": 0,
     "count": 1,
-    "effects": [ "INCENDIARY" ]
+    "effects": [ "IGNITE" ]
   }
 ]
diff --git a/data/mods/Aftershock/items/gun/laser.json b/data/mods/Aftershock/items/gun/laser.json
@@ -72,7 +72,7 @@
       [ "stock mount", 1 ],
       [ "underbarrel mount", 1 ]
     ],
-    "ammo_effects": [ "LASER", "INCENDIARY" ],
+    "ammo_effects": [ "LASER", "IGNITE" ],
     "flags": [ "NO_UNLOAD", "NON_FOULING", "NEEDS_NO_LUBE", "USE_UPS" ],
     "melee_damage": { "bash": 4 }
   },
@@ -168,7 +168,7 @@
     "overheat_threshold": 150,
     "modes": [ [ "DEFAULT", "pulse", 1 ], [ "BURST", "2s sequence", 2 ] ],
     "ammo_to_fire": 0,
-    "ammo_effects": [ "INCENDIARY", "DAZZLE_BEAM", "PLASMA_BUBBLE" ],
+    "ammo_effects": [ "IGNITE", "DAZZLE_BEAM", "PLASMA_BUBBLE" ],
     "delete": { "flags": [ "NO_UNLOAD", "NO_RELOAD" ] },
     "energy_drain": "30 kJ",
     "built_in_mods": [ "afs_holo_aim_assist" ],

diff --git a/data/mods/Aftershock/items/gunmods/shotguns.json b/data/mods/Aftershock/items/gunmods/shotguns.json
@@ -40,7 +40,7 @@
     "mod_targets": [ "shotgun" ],
     "damage_modifier": { "damage_type": "electric", "amount": 3, "armor_penetration": 7 },
     "energy_drain_modifier": "20 kJ",
-    "ammo_effects": [ "SMALL_ELECTRIC_BURST" ],
+    "ammo_effects": [ "SMALL_ELECTRIC_BURST", "MULTI_EFFECTS" ],
     "dispersion_modifier": 15,
     "range_modifier": 5,
     "handling_modifier": -2,

diff --git a/data/mods/CrazyCataclysm/crazy_items.json b/data/mods/CrazyCataclysm/crazy_items.json
@@ -81,7 +81,7 @@
     "durability": 10,
     "loudness": 50,
     "reload": 0,
-    "ammo_effects": [ "PLASMA", "EXPLOSIVE_HUGE", "STREAM_BIG", "INCENDIARY", "WIDE" ],
+    "ammo_effects": [ "PLASMA", "EXPLOSIVE_HUGE", "STREAM_BIG", "IGNITE", "WIDE" ],
     "flags": [ "NEVER_JAMS", "NO_UNLOAD", "TRADER_AVOID", "BIONIC_WEAPON", "USES_BIONIC_POWER" ],
     "melee_damage": { "bash": 12 }
   },

diff --git a/data/mods/Generic_Guns/ammo/shot.json b/data/mods/Generic_Guns/ammo/shot.json
@@ -58,7 +58,7 @@
       "dispersion": 1.2,
       "range": 0.5
     },
-    "extend": { "effects": [ "INCENDIARY", "STREAM", "NOGIB" ] }
+    "extend": { "effects": [ "INCENDIARY", "PYROTECHNIC_DISPLAY", "STREAM_TINY", "NOGIB" ] }
   },
   {
     "id": "shot_explosive",

diff --git a/data/mods/Magiclysm/items/fuel.json b/data/mods/Magiclysm/items/fuel.json
@@ -16,7 +16,7 @@
     "ammo_type": "dragon_blood",
     "damage": { "damage_type": "stab", "amount": 5, "armor_penetration": 5 },
     "range": 4,
-    "effects": [ "FLAME", "STREAM", "INCENDIARY", "NEVER_MISFIRES" ]
+    "effects": [ "FLAME", "STREAM", "IGNITE", "NEVER_MISFIRES" ]
   },
   {
     "id": "blood_tainted",

diff --git a/data/mods/MindOverMatter/items/teleporter_start_items.json b/data/mods/MindOverMatter/items/teleporter_start_items.json
@@ -20,7 +20,7 @@
     "loudness": 20,
     "reload": 200,
     "range": 45,
-    "ammo_effects": [ "PLASMA", "PLASMA_BUBBLE", "INCENDIARY" ],
+    "ammo_effects": [ "PLASMA", "PLASMA_BUBBLE", "IGNITE" ],
     "ammo": [ "mom_fusion_ammo" ],
     "pocket_data": [ { "pocket_type": "MAGAZINE_WELL", "magazine_well": "25 ml", "item_restriction": [ "mom_fusion_mag" ] } ],
     "flags": [ "NEVER_JAMS", "NON_FOULING", "NEEDS_NO_LUBE" ]

diff --git a/data/mods/MindOverMatter/items/weapons.json b/data/mods/MindOverMatter/items/weapons.json
@@ -91,7 +91,7 @@
       [ "underbarrel", 1 ]
     ],
     "ammo": [ "mom_pulse_rifle_ammo" ],
-    "ammo_effects": [ "LASER", "INCENDIARY" ],
+    "ammo_effects": [ "LASER", "IGNITE" ],
     "flags": [ "NEVER_JAMS", "NO_UNLOAD", "NON_FOULING", "NEEDS_NO_LUBE", "NO_REPAIR", "OVERHEATS" ],
     "faults": [ "fault_overheat_explosion", "fault_overheat_melting" ],
     "pocket_data": [ { "pocket_type": "MAGAZINE", "ammo_restriction": { "mom_pulse_rifle_ammo": 1 } } ],

diff --git a/data/mods/Xedra_Evolved/items/ammo.json b/data/mods/Xedra_Evolved/items/ammo.json
@@ -98,7 +98,7 @@
     "range": 12,
     "count": 1,
     "recoil": 900,
-    "effects": [ "INCENDIARY" ],
+    "effects": [ "IGNITE" ],
     "flags": [ "ZERO_WEIGHT" ]
   },
   {

diff --git a/data/mods/Xedra_Evolved/items/inventor/gun.json b/data/mods/Xedra_Evolved/items/inventor/gun.json
@@ -99,7 +99,7 @@
       [ "stock accessory", 1 ],
       [ "underbarrel", 1 ]
     ],
-    "ammo_effects": [ "LASER", "INCENDIARY" ],
+    "ammo_effects": [ "LASER", "IGNITE" ],
     "faults": [ "fault_overheat_explosion", "fault_overheat_venting", "fault_overheat_melting", "fault_overheat_safety" ],
     "flags": [
       "NEVER_JAMS",
@@ -162,7 +162,7 @@
       [ "stock accessory", 1 ],
       [ "underbarrel", 1 ]
     ],
-    "ammo_effects": [ "LASER", "INCENDIARY" ],
+    "ammo_effects": [ "LASER", "IGNITE" ],
     "faults": [ "fault_overheat_explosion", "fault_overheat_venting", "fault_overheat_melting", "fault_overheat_safety" ],
     "flags": [
       "NEVER_JAMS",
@@ -222,7 +222,7 @@
       [ "stock accessory", 1 ],
       [ "underbarrel", 1 ]
     ],
-    "ammo_effects": [ "LASER", "PLASMA_BUBBLE", "INCENDIARY" ],
+    "ammo_effects": [ "LASER", "PLASMA_BUBBLE", "IGNITE" ],
     "faults": [ "fault_overheat_explosion", "fault_overheat_venting", "fault_overheat_melting", "fault_overheat_safety" ],
     "flags": [
       "NEVER_JAMS",

diff --git a/doc/JSON_INFO.md b/doc/JSON_INFO.md
@@ -3494,6 +3494,7 @@ See [GAME_BALANCE.md](GAME_BALANCE.md)'s `MELEE_WEAPONS` section for the criteri
 "dispersion" : 0,     // Inaccuracy of ammo, measured in 100ths of Minutes Of Angle (MOA)
 "shot_counter": 5,    // Increases amount of shots produced by gun by this amount. `"shot_counter": 5` means each shot will be counted as 6 shots (1 you actually perform + 5); designed for using in suppressor mod breakage and for stuff like replaceable barrels, but not used anywhere at this moment
 "projectile_count": 5,// amount of pellets, that the ammo will shot, like in shotgun-like weapon; if used, shot_damage should be specified
+"multi_projectile_effects": true,// (Optional) Boolean, default false. If the projectile_count is greater than 1, determines if the extra projectiles will also trigger any ammo effects. (For more on ammo effects see below)
 "shot_damage": { "damage_type": "bullet", "amount": 15 } // Optional field specifying the damage caused by a single projectile fired from this round. If present projectile_count must also be specified; syntax is equal to damage
 "critical_multiplier": 4, // All ranged damage dealt would be multiplied by this, if it was a critical hit
 "shot_spread": 100,   // Optional field specifying the additional dispersion of single projectiles. Only meaningful if shot_count is present.

diff --git a/src/ballistics.cpp b/src/ballistics.cpp
@@ -240,6 +240,7 @@ dealt_projectile_attack projectile_attack( const projectile &proj_arg, const tri
     const auto &proj_effects = proj.proj_effects;
 
     const bool stream = proj_effects.count( "STREAM" ) > 0 ||
+                        proj_effects.count( "STREAM_TINY" ) > 0 ||
                         proj_effects.count( "STREAM_BIG" ) > 0 ||
                         proj_effects.count( "JET" ) > 0;
     const char bullet = stream ? '#' : '*';

diff --git a/src/creature.cpp b/src/creature.cpp
@@ -879,34 +879,38 @@ void projectile::apply_effects_damage( Creature &target, Creature *source,
 
     Character &player_character = get_player_character();
     if( proj_effects.count( "INCENDIARY" ) ) {
-        if( target.made_of( material_veggy ) || target.made_of_any( Creature::cmat_flammable ) ) {
-            target.add_effect( effect_source( source ), effect_onfire, rng( 2_turns, 6_turns ),
-                               dealt_dam.bp_hit );
-        } else if( target.made_of_any( Creature::cmat_flesh ) && one_in( 4 ) ) {
-            target.add_effect( effect_source( source ), effect_onfire, rng( 1_turns, 4_turns ),
-                               dealt_dam.bp_hit );
-        }
-        if( player_character.has_trait( trait_PYROMANIA ) &&
-            !player_character.has_morale( MORALE_PYROMANIA_STARTFIRE ) &&
-            player_character.sees( target ) ) {
-            player_character.add_msg_if_player( m_good,
-                                                _( "You feel a surge of euphoria as flame engulfs %s!" ), target.get_name() );
-            player_character.add_morale( MORALE_PYROMANIA_STARTFIRE, 15, 15, 8_hours, 6_hours );
-            player_character.rem_morale( MORALE_PYROMANIA_NOFIRE );
+        if( x_in_y( 1, 100 ) ) { // 1% chance
+            if( target.made_of( material_veggy ) || target.made_of_any( Creature::cmat_flammable ) ) {
+                target.add_effect( effect_source( source ), effect_onfire, rng( 2_turns, 6_turns ),
+                                   dealt_dam.bp_hit );
+            } else if( target.made_of_any( Creature::cmat_flesh ) && one_in( 4 ) ) {
+                target.add_effect( effect_source( source ), effect_onfire, rng( 1_turns, 4_turns ),
+                                   dealt_dam.bp_hit );
+            }
+            if( player_character.has_trait( trait_PYROMANIA ) &&
+                !player_character.has_morale( MORALE_PYROMANIA_STARTFIRE ) &&
+                player_character.sees( target ) ) {
+                player_character.add_msg_if_player( m_good,
+                                                    _( "You feel a surge of euphoria as flame engulfs %s!" ), target.get_name() );
+                player_character.add_morale( MORALE_PYROMANIA_STARTFIRE, 15, 15, 8_hours, 6_hours );
+                player_character.rem_morale( MORALE_PYROMANIA_NOFIRE );
+            }
         }
     } else if( proj_effects.count( "IGNITE" ) ) {
-        if( target.made_of( material_veggy ) || target.made_of_any( Creature::cmat_flammable ) ) {
-            target.add_effect( effect_source( source ), effect_onfire, 6_turns, dealt_dam.bp_hit );
-        } else if( target.made_of_any( Creature::cmat_flesh ) ) {
-            target.add_effect( effect_source( source ), effect_onfire, 10_turns, dealt_dam.bp_hit );
-        }
-        if( player_character.has_trait( trait_PYROMANIA ) &&
-            !player_character.has_morale( MORALE_PYROMANIA_STARTFIRE ) &&
-            player_character.sees( target ) ) {
-            player_character.add_msg_if_player( m_good,
-                                                _( "You feel a surge of euphoria as flame engulfs %s!" ), target.get_name() );
-            player_character.add_morale( MORALE_PYROMANIA_STARTFIRE, 15, 15, 8_hours, 6_hours );
-            player_character.rem_morale( MORALE_PYROMANIA_NOFIRE );
+        if( x_in_y( 1, 2 ) ) { // 50% chance
+            if( target.made_of( material_veggy ) || target.made_of_any( Creature::cmat_flammable ) ) {
+                target.add_effect( effect_source( source ), effect_onfire, 10_turns, dealt_dam.bp_hit );
+            } else if( target.made_of_any( Creature::cmat_flesh ) ) {
+                target.add_effect( effect_source( source ), effect_onfire, 6_turns, dealt_dam.bp_hit );
+            }
+            if( player_character.has_trait( trait_PYROMANIA ) &&
+                !player_character.has_morale( MORALE_PYROMANIA_STARTFIRE ) &&
+                player_character.sees( target ) ) {
+                player_character.add_msg_if_player( m_good,
+                                                    _( "You feel a surge of euphoria as flame engulfs %s!" ), target.get_name() );
+                player_character.add_morale( MORALE_PYROMANIA_STARTFIRE, 15, 15, 8_hours, 6_hours );
+                player_character.rem_morale( MORALE_PYROMANIA_NOFIRE );
+            }
         }
     }
 

diff --git a/src/item.cpp b/src/item.cpp
@@ -3087,9 +3087,9 @@ void item::ammo_info( std::vector<iteminfo> &info, const iteminfo_query *parts,
             }
         }
     }
-    if( ammo.ammo_effects.count( "INCENDIARY" ) &&
+    if( ( ammo.ammo_effects.count( "INCENDIARY" ) || ammo.ammo_effects.count( "IGNITE" ) ) &&
         parts->test( iteminfo_parts::AMMO_FX_INCENDIARY ) ) {
-        fx.emplace_back( _( "This ammo <neutral>starts fires</neutral>." ) );
+        fx.emplace_back( _( "This ammo <neutral>may start fires</neutral>." ) );
     }
     if( !fx.empty() ) {
         insert_separation_line( info );

diff --git a/src/item_factory.cpp b/src/item_factory.cpp
@@ -2679,6 +2679,7 @@ void islot_ammo::load( const JsonObject &jo )
     assign( jo, "drop_chance", drop_chance, strict, 0.0f, 1.0f );
     optional( jo, was_loaded, "drop_active", drop_active, true );
     optional( jo, was_loaded, "projectile_count", count, 1 );
+    optional( jo, was_loaded, "multi_projectile_effects", multi_projectile_effects, false );
     optional( jo, was_loaded, "shot_spread", shot_spread, 0 );
     assign( jo, "shot_damage", shot_damage, strict );
     // Damage instance assign reader handles pierce and prop_damage

diff --git a/src/itype.h b/src/itype.h
@@ -992,6 +992,10 @@ struct islot_ammo : common_ranged_data {
      * Number of projectiles fired per round, e.g. shotgun shot.
      */
     int count = 1;
+    /**
+     * Whether this multi-projectile shot has its effects applied to all projectiles
+     */
+    bool multi_projectile_effects = false;
     /**
      * Spread/dispersion between projectiles fired from the same round.
      */