diff --git a/src/bionics.cpp b/src/bionics.cpp
index 588dfdf2f1541..056a871b2ae90 100644
--- a/src/bionics.cpp
+++ b/src/bionics.cpp
@@ -244,7 +244,7 @@ void npc::check_or_use_weapon_cbm( const bionic_id &cbm_id )
 bool player::activate_bionic( int b, bool eff_only )
 {
     bionic &bio = ( *my_bionics )[b];
-
+    const bool mounted = is_mounted();
     if( bio.incapacitated_time > 0_turns ) {
         add_msg( m_info, _( "Your %s is shorting out and can't be activated." ),
                  bionics[bio.id].name );
@@ -356,6 +356,10 @@ bool player::activate_bionic( int b, bool eff_only )
 
         mod_moves( -100 );
     } else if( bio.id == "bio_time_freeze" ) {
+        if( mounted ) {
+            add_msg_if_player( m_info, _( "You cannot activate that while mounted." ) );
+            return false;
+        }
         mod_moves( power_level );
         power_level = 0;
         add_msg_if_player( m_good, _( "Your speed suddenly increases!" ) );
@@ -371,6 +375,10 @@ bool player::activate_bionic( int b, bool eff_only )
             add_effect( effect_teleglow, rng( 5_minutes, 40_minutes ) );
         }
     } else if( bio.id == "bio_teleport" ) {
+        if( mounted ) {
+            add_msg_if_player( m_info, _( "You cannot activate that while mounted." ) );
+            return false;
+        }
         g->teleport();
         add_effect( effect_teleglow, 30_minutes );
         mod_moves( -100 );
@@ -1512,6 +1520,9 @@ bool player::can_install_bionics( const itype &type, player &installer, bool aut
         debugmsg( "Tried to install NULL bionic" );
         return false;
     }
+    if( is_mounted() ) {
+        return false;
+    }
     int assist_bonus = installer.get_effect_int( effect_assisted );
 
     const bionic_id &bioid = type.bionic->id;
diff --git a/src/handle_action.cpp b/src/handle_action.cpp
index fd6ce6b14cd5c..78a74187777c2 100644
--- a/src/handle_action.cpp
+++ b/src/handle_action.cpp
@@ -883,7 +883,10 @@ static void wait()
 static void sleep()
 {
     player &u = g->u;
-
+    if( u.is_mounted() ) {
+        u.add_msg_if_player( m_info, _( "You cannot sleep while mounted." ) );
+        return;
+    }
     uilist as_m;
     as_m.text = _( "Are you sure you want to sleep?" );
     // (Y)es/(S)ave before sleeping/(N)o
diff --git a/src/iuse.cpp b/src/iuse.cpp
index f7ca0df36ec73..435fef93aad0a 100644
--- a/src/iuse.cpp
+++ b/src/iuse.cpp
@@ -840,7 +840,10 @@ int iuse::meditate( player *p, item *it, bool t, const tripoint & )
     if( !p || t ) {
         return 0;
     }
-
+    if( p->is_mounted() ) {
+        p->add_msg_if_player( m_info, _( "You cannot do that while mounted." ) );
+        return 0;
+    }
     if( p->has_trait( trait_SPIRITUAL ) ) {
         const int moves = to_moves<int>( 20_minutes );
         p->assign_activity( activity_id( "ACT_MEDITATE" ), moves );
@@ -1680,10 +1683,13 @@ static bool good_fishing_spot( tripoint pos )
 int iuse::fishing_rod( player *p, item *it, bool, const tripoint & )
 {
     if( p->is_npc() ) {
-        // Long actions - NPCs don't like those yet
+        // Long actions - NPCs don't like those yet.
+        return 0;
+    }
+    if( p->is_mounted() ) {
+        p->add_msg_if_player( m_info, _( "You cannot do that while mounted." ) );
         return 0;
     }
-
     const cata::optional<tripoint> pnt_ = choose_adjacent( _( "Fish where?" ) );
     if( !pnt_ ) {
         return 0;
@@ -1717,7 +1723,10 @@ int iuse::fish_trap( player *p, item *it, bool t, const tripoint &pos )
             it->charges = 0;
             return 0;
         }
-
+        if( p->is_mounted() ) {
+            p->add_msg_if_player( m_info, _( "You cannot do that while mounted." ) );
+            return 0;
+        }
         if( p->is_underwater() ) {
             p->add_msg_if_player( m_info, _( "You can't do that while underwater." ) );
             return 0;
@@ -1972,12 +1981,12 @@ int iuse::pack_cbm( player *p, item *it, bool, const tripoint & )
 
     const int success = p->get_skill_level( skill_firstaid ) - rng( 0, 6 );
     if( success > 0 ) {
-        add_msg( m_info, _( "You carefully prepare the CBM for sterilization." ) );
+        p->add_msg_if_player( m_info, _( "You carefully prepare the CBM for sterilization." ) );
     } else {
         bionic.get_item()->set_flag( "PACKED_FAULTY" );
-        add_msg( m_info, _( "You put the CBM in the pouch and close it." ) );
+        p->add_msg_if_player( m_info, _( "You put the CBM in the pouch and close it." ) );
         if( success == 0 ) {
-            add_msg( m_bad, _( "You're not sure about the quality of your work." ) );
+            p->add_msg_if_player( m_info, _( "You're not sure about the quality of your work." ) );
         }
     }
 
@@ -2038,6 +2047,10 @@ static int cauterize_elec( player &p, item &it )
 
 int iuse::water_purifier( player *p, item *it, bool, const tripoint & )
 {
+    if( p->is_mounted() ) {
+        p->add_msg_if_player( m_info, _( "You cannot do that while mounted." ) );
+        return 0;
+    }
     auto obj = g->inv_map_splice( []( const item & e ) {
         return !e.contents.empty() && e.contents.front().typeId() == "water";
     }, _( "Purify what?" ), 1, _( "You don't have water to purify." ) );
@@ -2084,7 +2097,7 @@ int iuse::directional_antenna( player *p, item *it, bool, const tripoint & )
     // Find the radio station its tuned to (if any)
     const auto tref = overmap_buffer.find_radio_station( radio.frequency );
     if( !tref ) {
-        add_msg( m_info, _( "You can't find the direction if your radio isn't tuned." ) );
+        p->add_msg_if_player( m_info, _( "You can't find the direction if your radio isn't tuned." ) );
         return 0;
     }
     // Report direction.
@@ -2282,6 +2295,10 @@ static bool pry_nails( player &p, const ter_id &type, const tripoint &pnt )
 
 int iuse::hammer( player *p, item *it, bool, const tripoint & )
 {
+    if( p->is_mounted() ) {
+        p->add_msg_if_player( m_info, _( "You cannot do that while mounted." ) );
+        return 0;
+    }
     // If anyone other than the player wants to use one of these,
     // they're going to need to figure out how to aim it.
     const cata::optional<tripoint> pnt_ = choose_adjacent( _( "Pry where?" ) );
@@ -2301,6 +2318,10 @@ int iuse::hammer( player *p, item *it, bool, const tripoint & )
 
 int iuse::crowbar( player *p, item *it, bool, const tripoint &pos )
 {
+    if( p->is_mounted() ) {
+        p->add_msg_if_player( m_info, _( "You cannot do that while mounted." ) );
+        return 0;
+    }
     // TODO: Make this 3D now that NPCs get to use items
     tripoint pnt = pos;
     if( pos == p->pos() ) {
@@ -2456,7 +2477,10 @@ int iuse::makemound( player *p, item *it, bool t, const tripoint & )
     if( !p || t ) {
         return 0;
     }
-
+    if( p->is_mounted() ) {
+        p->add_msg_if_player( m_info, _( "You cannot do that while mounted." ) );
+        return 0;
+    }
     const cata::optional<tripoint> pnt_ = choose_adjacent( _( "Till soil where?" ) );
     if( !pnt_ ) {
         return 0;
@@ -2464,7 +2488,8 @@ int iuse::makemound( player *p, item *it, bool t, const tripoint & )
     const tripoint pnt = *pnt_;
 
     if( pnt == p->pos() ) {
-        add_msg( m_info, _( "You think about jumping on a shovel, but then change up your mind." ) );
+        p->add_msg_if_player( m_info,
+                              _( "You think about jumping on a shovel, but then change up your mind." ) );
         return 0;
     }
 
@@ -2615,7 +2640,10 @@ int iuse::dig( player *p, item *it, bool t, const tripoint & )
     if( !p || t ) {
         return 0;
     }
-
+    if( p->is_mounted() ) {
+        p->add_msg_if_player( m_info, _( "You cannot do that while mounted." ) );
+        return 0;
+    }
     const tripoint dig_point = p->pos();
 
     const bool can_dig_here = g->m.has_flag( "DIGGABLE", dig_point ) &&
@@ -2707,7 +2735,10 @@ int iuse::dig_channel( player *p, item *it, bool t, const tripoint & )
     if( !p || t ) {
         return 0;
     }
-
+    if( p->is_mounted() ) {
+        p->add_msg_if_player( m_info, _( "You cannot do that while mounted." ) );
+        return 0;
+    }
     const tripoint dig_point = p->pos();
 
     tripoint north = dig_point + point_north;
@@ -2769,7 +2800,10 @@ int iuse::fill_pit( player *p, item *it, bool t, const tripoint & )
     if( !p || t ) {
         return 0;
     }
-
+    if( p->is_mounted() ) {
+        p->add_msg_if_player( m_info, _( "You cannot do that while mounted." ) );
+        return 0;
+    }
     const cata::optional<tripoint> pnt_ = choose_adjacent( _( "Fill which pit or mound?" ) );
     if( !pnt_ ) {
         return 0;
@@ -2777,7 +2811,7 @@ int iuse::fill_pit( player *p, item *it, bool t, const tripoint & )
     const tripoint pnt = *pnt_;
 
     if( pnt == p->pos() ) {
-        add_msg( m_info, _( "You decide not to bury yourself that early." ) );
+        p->add_msg_if_player( m_info, _( "You decide not to bury yourself that early." ) );
         return 0;
     }
 
@@ -2816,6 +2850,10 @@ int iuse::fill_pit( player *p, item *it, bool t, const tripoint & )
 
 int iuse::clear_rubble( player *p, item *it, bool, const tripoint & )
 {
+    if( p->is_mounted() ) {
+        p->add_msg_if_player( m_info, _( "You cannot do that while mounted." ) );
+        return 0;
+    }
     const cata::optional<tripoint> pnt_ = choose_adjacent( _( "Clear rubble where?" ) );
     if( !pnt_ ) {
         return 0;
@@ -2845,6 +2883,10 @@ void act_vehicle_siphon( vehicle * ); // veh_interact.cpp
 
 int iuse::siphon( player *p, item *it, bool, const tripoint & )
 {
+    if( p->is_mounted() ) {
+        p->add_msg_if_player( m_info, _( "You cannot do that while mounted." ) );
+        return 0;
+    }
     const cata::optional<tripoint> pnt_ = choose_adjacent( _( "Siphon from where?" ) );
     if( !pnt_ ) {
         return 0;
@@ -3065,7 +3107,10 @@ int iuse::jackhammer( player *p, item *it, bool, const tripoint &pos )
     if( !p->has_enough_charges( *it, false ) ) {
         return 0;
     }
-
+    if( p->is_mounted() ) {
+        p->add_msg_if_player( m_info, _( "You cannot do that while mounted." ) );
+        return 0;
+    }
     if( p->is_underwater() ) {
         p->add_msg_if_player( m_info, _( "You can't do that while underwater." ) );
         return 0;
@@ -3117,7 +3162,10 @@ int iuse::pickaxe( player *p, item *it, bool, const tripoint &pos )
         // Long action
         return 0;
     }
-
+    if( p->is_mounted() ) {
+        p->add_msg_if_player( m_info, _( "You cannot do that while mounted." ) );
+        return 0;
+    }
     if( p->is_underwater() ) {
         p->add_msg_if_player( m_info, _( "You can't do that while underwater." ) );
         return 0;
@@ -3169,7 +3217,10 @@ int iuse::burrow( player *p, item *it, bool, const tripoint &pos )
         // Long action
         return 0;
     }
-
+    if( p->is_mounted() ) {
+        p->add_msg_if_player( m_info, _( "You cannot do that while mounted." ) );
+        return 0;
+    }
     if( p->is_underwater() ) {
         p->add_msg_if_player( m_info, _( "You can't do that while underwater." ) );
         return 0;
@@ -3275,7 +3326,10 @@ int iuse::teleport( player *p, item *it, bool, const tripoint & )
         // That would be evil
         return 0;
     }
-
+    if( p->is_mounted() ) {
+        p->add_msg_if_player( m_info, _( "You cannot do that while mounted." ) );
+        return 0;
+    }
     if( !it->ammo_sufficient() ) {
         return 0;
     }
@@ -3366,7 +3420,7 @@ int iuse::granade( player *p, item *it, bool, const tripoint & )
     return it->type->charges_to_use();
 }
 
-int iuse::granade_act( player *, item *it, bool t, const tripoint &pos )
+int iuse::granade_act( player *p, item *it, bool t, const tripoint &pos )
 {
     if( pos.x == -999 || pos.y == -999 ) {
         return 0;
@@ -3375,8 +3429,8 @@ int iuse::granade_act( player *, item *it, bool t, const tripoint &pos )
         // Vol 0 = only heard if you hold it
         sounds::sound( pos, 0, sounds::sound_t::speech, _( "Merged!" ), true, "speech", it->typeId() );
     } else if( it->charges > 0 ) {
-        add_msg( m_info, _( "You've already pulled the %s's pin, try throwing it instead." ),
-                 it->tname() );
+        p->add_msg_if_player( m_info, _( "You've already pulled the %s's pin, try throwing it instead." ),
+                              it->tname() );
         return 0;
     } else { // When that timer runs down...
         int explosion_radius = 3;
@@ -3587,7 +3641,8 @@ int iuse::molotov_lit( player *p, item *it, bool t, const tripoint &pos )
     if( pos.x == -999 || pos.y == -999 ) {
         return 0;
     } else if( it->charges > 0 ) {
-        add_msg( m_info, _( "You've already lit the %s, try throwing it instead." ), it->tname() );
+        p->add_msg_if_player( m_info, _( "You've already lit the %s, try throwing it instead." ),
+                              it->tname() );
         return 0;
     } else if( p->has_item( *it ) && it->charges == 0 ) {
         it->charges += 1;
@@ -3664,7 +3719,7 @@ int iuse::firecracker( player *p, item *it, bool, const tripoint & )
     return it->type->charges_to_use();
 }
 
-int iuse::firecracker_act( player *, item *it, bool t, const tripoint &pos )
+int iuse::firecracker_act( player *p, item *it, bool t, const tripoint &pos )
 {
     if( pos.x == -999 || pos.y == -999 ) {
         return 0;
@@ -3672,7 +3727,8 @@ int iuse::firecracker_act( player *, item *it, bool t, const tripoint &pos )
     if( t ) { // Simple timer effects
         sounds::sound( pos, 0,  sounds::sound_t::alarm, _( "ssss..." ), true, "misc", "lit_fuse" );
     } else if( it->charges > 0 ) {
-        add_msg( m_info, _( "You've already lit the %s, try throwing it instead." ), it->tname() );
+        p->add_msg_if_player( m_info, _( "You've already lit the %s, try throwing it instead." ),
+                              it->tname() );
         return 0;
     } else { // When that timer runs down...
         sounds::sound( pos, 20, sounds::sound_t::combat, _( "Bang!" ), true, "explosion", "small" );
@@ -3750,6 +3806,10 @@ int iuse::portal( player *p, item *it, bool, const tripoint & )
     if( !it->ammo_sufficient() ) {
         return 0;
     }
+    if( p->is_mounted() ) {
+        p->add_msg_if_player( m_info, _( "You cannot do that while mounted." ) );
+        return 0;
+    }
     tripoint t( p->posx() + rng( -2, 2 ), p->posy() + rng( -2, 2 ), p->posz() );
     g->m.trap_set( t, tr_portal );
     return it->type->charges_to_use();
@@ -3998,6 +4058,10 @@ int iuse::mp3_on( player *p, item *it, bool t, const tripoint &pos )
 
 int iuse::rpgdie( player *you, item *die, bool, const tripoint & )
 {
+    if( you->is_mounted() ) {
+        you->add_msg_if_player( m_info, _( "You cannot do that while mounted." ) );
+        return 0;
+    }
     int num_sides = die->get_var( "die_num_sides", 0 );
     if( num_sides == 0 ) {
         const std::vector<int> sides_options = { 4, 6, 8, 10, 12, 20, 50 };
@@ -4151,13 +4215,16 @@ int iuse::portable_game( player *p, item *it, bool, const tripoint & )
         // Long action
         return 0;
     }
-
+    if( p->is_mounted() ) {
+        p->add_msg_if_player( m_info, _( "You cannot do that while mounted." ) );
+        return 0;
+    }
     if( p->is_underwater() ) {
         p->add_msg_if_player( m_info, _( "You can't do that while underwater." ) );
         return 0;
     }
     if( p->has_trait( trait_ILLITERATE ) ) {
-        add_msg( _( "You're illiterate!" ) );
+        p->add_msg_if_player( m_info, _( "You're illiterate!" ) );
         return 0;
     } else if( it->ammo_remaining() < 15 ) {
         p->add_msg_if_player( m_info, _( "The %s's batteries are dead." ), it->tname() );
@@ -4266,7 +4333,10 @@ int iuse::vibe( player *p, item *it, bool, const tripoint & )
         // Also, that would be creepy as fuck, seriously
         return 0;
     }
-
+    if( p->is_mounted() ) {
+        p->add_msg_if_player( m_info, _( "You cannot do... that while mounted." ) );
+        return 0;
+    }
     if( ( p->is_underwater() ) && ( !( ( p->has_trait( trait_GILLS ) ) ||
                                        ( p->is_wearing( "rebreather_on" ) ) ||
                                        ( p->is_wearing( "rebreather_xl_on" ) ) || ( p->is_wearing( "mask_h20survivor_on" ) ) ) ) ) {
@@ -4355,7 +4425,10 @@ int iuse::blood_draw( player *p, item *it, bool, const tripoint & )
     if( p->is_npc() ) {
         return 0;    // No NPCs for now!
     }
-
+    if( p->is_mounted() ) {
+        p->add_msg_if_player( m_info, _( "You cannot do that while mounted." ) );
+        return 0;
+    }
     if( !it->contents.empty() ) {
         p->add_msg_if_player( m_info, _( "That %s is full!" ), it->tname() );
         return 0;
@@ -4416,6 +4489,10 @@ int iuse::blood_draw( player *p, item *it, bool, const tripoint & )
 //This is just used for robofac_intercom_mission_2
 int iuse::mind_splicer( player *p, item *it, bool, const tripoint & )
 {
+    if( p->is_mounted() ) {
+        p->add_msg_if_player( m_info, _( "You cannot do that while mounted." ) );
+        return 0;
+    }
     for( auto &map_it : g->m.i_at( point( p->posx(), p->posy() ) ) ) {
         if( map_it.typeId() == "rmi2_corpse" &&
             query_yn( _( "Use the mind splicer kit on the %s?" ), colorize( map_it.tname(),
@@ -4443,6 +4520,10 @@ int iuse::mind_splicer( player *p, item *it, bool, const tripoint & )
 
 void iuse::cut_log_into_planks( player &p )
 {
+    if( p.is_mounted() ) {
+        p.add_msg_if_player( m_info, _( "You cannot do that while mounted." ) );
+        return;
+    }
     const int moves = to_moves<int>( 20_minutes );
     p.add_msg_if_player( _( "You cut the log into planks." ) );
 
@@ -4455,7 +4536,10 @@ int iuse::lumber( player *p, item *it, bool t, const tripoint & )
     if( t ) {
         return 0;
     }
-
+    if( p->is_mounted() ) {
+        p->add_msg_if_player( m_info, _( "You cannot do that while mounted." ) );
+        return 0;
+    }
     // Check if player is standing on any lumber
     for( auto &i : g->m.i_at( p->pos() ) ) {
         if( i.typeId() == "log" ) {
@@ -4471,7 +4555,7 @@ int iuse::lumber( player *p, item *it, bool t, const tripoint & )
     item &cut = p->i_at( pos );
 
     if( cut.is_null() ) {
-        add_msg( m_info, _( "You do not have that item!" ) );
+        p->add_msg_if_player( m_info, _( "You do not have that item!" ) );
         return 0;
     }
     p->i_rem( &cut );
@@ -4498,7 +4582,10 @@ int iuse::chop_tree( player *p, item *it, bool t, const tripoint & )
     if( !p || t ) {
         return 0;
     }
-
+    if( p->is_mounted() ) {
+        p->add_msg_if_player( m_info, _( "You cannot do that while mounted." ) );
+        return 0;
+    }
     const cata::optional<tripoint> pnt_ = choose_adjacent( _( "Chop down which tree?" ) );
     if( !pnt_ ) {
         return 0;
@@ -4506,7 +4593,7 @@ int iuse::chop_tree( player *p, item *it, bool t, const tripoint & )
     const tripoint pnt = *pnt_;
 
     if( pnt == p->pos() ) {
-        add_msg( m_info, _( "You're not stern enough to shave yourself with THIS." ) );
+        p->add_msg_if_player( m_info, _( "You're not stern enough to shave yourself with THIS." ) );
         return 0;
     }
 
@@ -4515,7 +4602,7 @@ int iuse::chop_tree( player *p, item *it, bool t, const tripoint & )
     if( g->m.has_flag( "TREE", pnt ) ) {
         moves = chop_moves( p, it );
     } else {
-        add_msg( m_info, _( "You can't chop down that." ) );
+        p->add_msg_if_player( m_info, _( "You can't chop down that." ) );
         return 0;
     }
     const std::vector<npc *> helpers = g->u.get_crafting_helpers();
@@ -4534,7 +4621,10 @@ int iuse::chop_logs( player *p, item *it, bool t, const tripoint & )
     if( !p || t ) {
         return 0;
     }
-
+    if( p->is_mounted() ) {
+        p->add_msg_if_player( m_info, _( "You cannot do that while mounted." ) );
+        return 0;
+    }
     const cata::optional<tripoint> pnt_ = choose_adjacent( _( "Chop which tree trunk?" ) );
     if( !pnt_ ) {
         return 0;
@@ -4547,7 +4637,7 @@ int iuse::chop_logs( player *p, item *it, bool t, const tripoint & )
     if( ter == t_trunk || ter == t_stump ) {
         moves = chop_moves( p, it );
     } else {
-        add_msg( m_info, _( "You can't chop that." ) );
+        p->add_msg_if_player( m_info, _( "You can't chop that." ) );
         return 0;
     }
     const std::vector<npc *> helpers = g->u.get_crafting_helpers();
@@ -4567,10 +4657,13 @@ int iuse::oxytorch( player *p, item *it, bool, const tripoint & )
         // Long action
         return 0;
     }
-
+    if( p->is_mounted() ) {
+        p->add_msg_if_player( m_info, _( "You cannot do that while mounted." ) );
+        return 0;
+    }
     static const quality_id GLARE( "GLARE" );
     if( !p->has_quality( GLARE, 2 ) ) {
-        add_msg( m_info, _( "You need welding goggles to do that." ) );
+        p->add_msg_if_player( m_info, _( "You need welding goggles to do that." ) );
         return 0;
     }
 
@@ -4601,7 +4694,7 @@ int iuse::oxytorch( player *p, item *it, bool, const tripoint & )
                ter == t_door_bar_locked || ter == t_door_metal_pickable ) {
         turns = to_turns<int>( 15_seconds );
     } else {
-        add_msg( m_info, _( "You can't cut that." ) );
+        p->add_msg_if_player( m_info, _( "You can't cut that." ) );
         return 0;
     }
 
@@ -4609,7 +4702,7 @@ int iuse::oxytorch( player *p, item *it, bool, const tripoint & )
     int moves = to_moves<int>( time_duration::from_turns( turns ) );
 
     if( charges > it->ammo_remaining() ) {
-        add_msg( m_info, _( "Your torch doesn't have enough acetylene to cut that." ) );
+        p->add_msg_if_player( m_info, _( "Your torch doesn't have enough acetylene to cut that." ) );
         return 0;
     }
 
@@ -4628,7 +4721,10 @@ int iuse::hacksaw( player *p, item *it, bool t, const tripoint & )
     if( !p || t ) {
         return 0;
     }
-
+    if( p->is_mounted() ) {
+        p->add_msg_if_player( m_info, _( "You cannot do that while mounted." ) );
+        return 0;
+    }
     const cata::optional<tripoint> pnt_ = choose_adjacent( _( "Cut up metal where?" ) );
     if( !pnt_ ) {
         return 0;
@@ -4637,7 +4733,7 @@ int iuse::hacksaw( player *p, item *it, bool t, const tripoint & )
 
     if( pnt == p->pos() ) {
         add_msg( m_info, _( "Why would you do that?" ) );
-        add_msg( m_info, _( "You're not even chained to a boiler." ) );
+        p->add_msg_if_player( m_info, _( "You're not even chained to a boiler." ) );
         return 0;
     }
 
@@ -4654,7 +4750,7 @@ int iuse::hacksaw( player *p, item *it, bool t, const tripoint & )
     } else if( ter == t_door_bar_c || ter == t_door_bar_locked || ter == t_bars ) {
         moves = to_moves<int>( 15_minutes );
     } else {
-        add_msg( m_info, _( "You can't cut that." ) );
+        p->add_msg_if_player( m_info, _( "You can't cut that." ) );
         return 0;
     }
 
@@ -4667,6 +4763,10 @@ int iuse::hacksaw( player *p, item *it, bool t, const tripoint & )
 
 int iuse::boltcutters( player *p, item *it, bool, const tripoint & )
 {
+    if( p->is_mounted() ) {
+        p->add_msg_if_player( m_info, _( "You cannot do that while mounted." ) );
+        return 0;
+    }
     const cata::optional<tripoint> pnt_ = choose_adjacent( _( "Cut up metal where?" ) );
     if( !pnt_ ) {
         return 0;
@@ -4690,7 +4790,7 @@ int iuse::boltcutters( player *p, item *it, bool, const tripoint & )
                        "boltcutters" );
         g->m.spawn_item( pnt, "wire", 20 );
     } else {
-        add_msg( m_info, _( "You can't cut that." ) );
+        p->add_msg_if_player( m_info, _( "You can't cut that." ) );
         return 0;
     }
     return it->type->charges_to_use();
@@ -4698,6 +4798,10 @@ int iuse::boltcutters( player *p, item *it, bool, const tripoint & )
 
 int iuse::mop( player *p, item *it, bool, const tripoint & )
 {
+    if( p->is_mounted() ) {
+        p->add_msg_if_player( m_info, _( "You cannot do that while mounted." ) );
+        return 0;
+    }
     const cata::optional<tripoint> pnt_ = choose_adjacent( _( "Mop where?" ) );
     if( !pnt_ ) {
         return 0;
@@ -4710,13 +4814,13 @@ int iuse::mop( player *p, item *it, bool, const tripoint & )
         return 0;
     }
     if( p->is_blind() ) {
-        add_msg( _( "You move the mop around, unsure whether it's doing any good." ) );
+        p->add_msg_if_player( m_info, _( "You move the mop around, unsure whether it's doing any good." ) );
         p->moves -= 15;
         if( one_in( 3 ) ) {
             g->m.mop_spills( pnt );
         }
     } else if( g->m.mop_spills( pnt ) ) {
-        add_msg( _( "You mop up the spill." ) );
+        p->add_msg_if_player( m_info, _( "You mop up the spill." ) );
         p->moves -= 15;
     } else {
         p->add_msg_if_player( m_info, _( "There's nothing to mop there." ) );
@@ -5096,9 +5200,9 @@ int iuse::handle_ground_graffiti( player &p, item *it, const std::string &prefix
                 move_cost = 3 * g->m.graffiti_at( where ).length();
                 g->m.delete_graffiti( where );
                 if( grave ) {
-                    add_msg( _( "You blur the inscription on the grave." ) );
+                    p.add_msg_if_player( m_info, _( "You blur the inscription on the grave." ) );
                 } else {
-                    add_msg( _( "You manage to get rid of the message on the ground." ) );
+                    p.add_msg_if_player( m_info, _( "You manage to get rid of the message on the ground." ) );
                 }
             } else {
                 add_msg( _( "There isn't anything to erase here." ) );
@@ -5107,9 +5211,9 @@ int iuse::handle_ground_graffiti( player &p, item *it, const std::string &prefix
         } else {
             g->m.set_graffiti( where, message );
             if( grave ) {
-                add_msg( _( "You carve an inscription on the grave." ) );
+                p.add_msg_if_player( m_info, _( "You carve an inscription on the grave." ) );
             } else {
-                add_msg( _( "You write a message on the ground." ) );
+                p.add_msg_if_player( m_info, _( "You write a message on the ground." ) );
             }
             move_cost = 2 * message.length();
         }
@@ -5149,15 +5253,16 @@ static bool heat_item( player &p )
 
         if( target.has_flag( "EATEN_COLD" ) ) {
             target.cold_up();
-            add_msg( _( "You defrost the food, but don't heat it up, since you enjoy it cold." ) );
+            p.add_msg_if_player( m_info,
+                                 _( "You defrost the food, but don't heat it up, since you enjoy it cold." ) );
         } else {
-            add_msg( _( "You defrost and heat up the food." ) );
+            p.add_msg_if_player( m_info, _( "You defrost and heat up the food." ) );
             target.heat_up();
             // x2 because we have to defrost and heat
             move_mod *= 2;
         }
     } else {
-        add_msg( _( "You heat up the food." ) );
+        p.add_msg_if_player( m_info, _( "You heat up the food." ) );
         target.heat_up();
     }
     p.mod_moves( -move_mod ); // time needed to actually heat up
@@ -5190,6 +5295,10 @@ int iuse::heat_food( player *p, item *it, bool, const tripoint & )
 
 int iuse::hotplate( player *p, item *it, bool, const tripoint & )
 {
+    if( p->is_mounted() ) {
+        p->add_msg_if_player( m_info, _( "You cannot do that while mounted." ) );
+        return 0;
+    }
     if( it->typeId() != "atomic_coffeepot" && ( !it->units_sufficient( *p ) ) ) {
         p->add_msg_if_player( m_info, _( "The %s's batteries are dead." ), it->tname() );
         return 0;
@@ -5294,6 +5403,10 @@ int iuse::unfold_generic( player *p, item *it, bool, const tripoint & )
         p->add_msg_if_player( m_info, _( "You can't do that while underwater." ) );
         return 0;
     }
+    if( p->is_mounted() ) {
+        p->add_msg_if_player( m_info, _( "You cannot do that while mounted." ) );
+        return 0;
+    }
     vehicle *veh = g->m.add_vehicle( vproto_id( "none" ), p->pos().xy(), 0, 0, 0, false );
     if( veh == nullptr ) {
         p->add_msg_if_player( m_info, _( "There's no room to unfold the %s." ), it->tname() );
@@ -5493,6 +5606,10 @@ int iuse::gun_repair( player *p, item *it, bool, const tripoint & )
         p->add_msg_if_player( m_info, _( "You can't do that while underwater." ) );
         return 0;
     }
+    if( p->is_mounted() ) {
+        p->add_msg_if_player( m_info, _( "You cannot do that while mounted." ) );
+        return 0;
+    }
     /** @EFFECT_MECHANICS >1 allows gun repair */
     if( p->get_skill_level( skill_mechanics ) < 2 ) {
         p->add_msg_if_player( m_info, _( "You need a mechanics skill of 2 to use this repair kit." ) );
@@ -5631,8 +5748,12 @@ int iuse::misc_repair( player *p, item *it, bool, const tripoint & )
         p->add_msg_if_player( m_info, _( "You can't do that while underwater." ) );
         return 0;
     }
+    if( p->is_mounted() ) {
+        p->add_msg_if_player( m_info, _( "You cannot do that while mounted." ) );
+        return 0;
+    }
     if( p->fine_detail_vision_mod() > 4 ) {
-        add_msg( m_info, _( "You can't see to repair!" ) );
+        p->add_msg_if_player( m_info, _( "You can't see to repair!" ) );
         return 0;
     }
     /** @EFFECT_FABRICATION >0 allows use of repair kit */
@@ -5745,7 +5866,8 @@ int iuse::robotcontrol( player *p, item *it, bool, const tripoint & )
 
     if( p->has_trait( trait_HYPEROPIC ) && !p->worn_with_flag( "FIX_FARSIGHT" ) &&
         !p->has_effect( effect_contacts ) && !p->has_bionic( bionic_id( "bio_eye_optic" ) ) ) {
-        add_msg( m_info, _( "You'll need to put on reading glasses before you can see the screen." ) );
+        p->add_msg_if_player( m_info,
+                              _( "You'll need to put on reading glasses before you can see the screen." ) );
         return 0;
     }
 
@@ -6096,7 +6218,9 @@ int iuse::einktabletpc( player *p, item *it, bool t, const tripoint &pos )
         }
 
         return 0;
-
+    } else if( p->is_mounted() ) {
+        p->add_msg_if_player( m_info, _( "You cannot do that while mounted." ) );
+        return 0;
     } else if( !p->is_npc() ) {
 
         enum {
@@ -6108,12 +6232,13 @@ int iuse::einktabletpc( player *p, item *it, bool t, const tripoint &pos )
             return 0;
         }
         if( p->has_trait( trait_ILLITERATE ) ) {
-            add_msg( m_info, _( "You cannot read a computer screen." ) );
+            p->add_msg_if_player( m_info, _( "You cannot read a computer screen." ) );
             return 0;
         }
         if( p->has_trait( trait_HYPEROPIC ) && !p->worn_with_flag( "FIX_FARSIGHT" ) &&
             !p->has_effect( effect_contacts ) && !p->has_bionic( bionic_id( "bio_eye_optic" ) ) ) {
-            add_msg( m_info, _( "You'll need to put on reading glasses before you can see the screen." ) );
+            p->add_msg_if_player( m_info,
+                                  _( "You'll need to put on reading glasses before you can see the screen." ) );
             return 0;
         }
 
@@ -7494,6 +7619,7 @@ int iuse::camera( player *p, item *it, bool, const tripoint & )
 
 int iuse::ehandcuffs( player *p, item *it, bool t, const tripoint &pos )
 {
+
     if( t ) {
 
         if( g->m.has_flag( "SWIMMABLE", pos.xy() ) ) {
@@ -7587,7 +7713,7 @@ int iuse::ehandcuffs( player *p, item *it, bool t, const tripoint &pos )
     return it->type->charges_to_use();
 }
 
-int iuse::foodperson( player *, item *it, bool t, const tripoint &pos )
+int iuse::foodperson( player *p, item *it, bool t, const tripoint &pos )
 {
     if( t ) {
         if( calendar::once_every( 1_minutes ) ) {
@@ -7601,7 +7727,8 @@ int iuse::foodperson( player *, item *it, bool t, const tripoint &pos )
     time_duration shift = time_duration::from_turns( it->magazine_current()->ammo_remaining() *
                           it->type->tool->turns_per_charge );
 
-    add_msg( m_info, _( "Your HUD lights-up: \"Your shift ends in %s\"." ), to_string( shift ) );
+    p->add_msg_if_player( m_info, _( "Your HUD lights-up: \"Your shift ends in %s\"." ),
+                          to_string( shift ) );
     return 0;
 }
 
@@ -8023,7 +8150,7 @@ static bool multicooker_hallu( player &p )
                     m->add_effect( effect_run, 1_turns, num_bp, true );
                 }
             } else {
-                add_msg( m_bad, _( "You're surrounded by aggressive multi-cookers!" ) );
+                p.add_msg_if_player( m_info, _( "You're surrounded by aggressive multi-cookers!" ) );
 
                 for( auto &point : points ) {
                     if( monster *const m = g->summon_mon( mon_hallu_multicooker, point ) ) {
@@ -8138,7 +8265,6 @@ int iuse::multicooker( player *p, item *it, bool t, const tripoint &pos )
 {
     static const std::set<std::string> multicooked_subcats = { "CSC_FOOD_MEAT", "CSC_FOOD_VEGGI", "CSC_FOOD_PASTA" };
     static const int charges_to_start = 50;
-
     if( t ) {
         if( !it->units_sufficient( *p ) ) {
             it->active = false;
@@ -8192,7 +8318,8 @@ int iuse::multicooker( player *p, item *it, bool t, const tripoint &pos )
         }
 
         if( p->has_trait( trait_ILLITERATE ) ) {
-            add_msg( m_info, _( "You cannot read, and don't understand the screen or the buttons!" ) );
+            p->add_msg_if_player( m_info,
+                                  _( "You cannot read, and don't understand the screen or the buttons!" ) );
             return 0;
         }
 
@@ -8204,7 +8331,8 @@ int iuse::multicooker( player *p, item *it, bool t, const tripoint &pos )
 
         if( p->has_trait( trait_HYPEROPIC ) && !p->worn_with_flag( "FIX_FARSIGHT" ) &&
             !p->has_effect( effect_contacts ) ) {
-            add_msg( m_info, _( "You'll need to put on reading glasses before you can see the screen." ) );
+            p->add_msg_if_player( m_info,
+                                  _( "You'll need to put on reading glasses before you can see the screen." ) );
             return 0;
         }
 
@@ -8372,7 +8500,7 @@ int iuse::multicooker( player *p, item *it, bool t, const tripoint &pos )
         if( mc_upgrade == choice ) {
 
             if( !p->has_morale_to_craft() ) {
-                add_msg( m_info, _( "Your morale is too low to craft..." ) );
+                p->add_msg_if_player( m_info, _( "Your morale is too low to craft..." ) );
                 return 0;
             }
 
@@ -8619,6 +8747,10 @@ int iuse::cable_attach( player *p, item *it, bool, const tripoint & )
 
 int iuse::shavekit( player *p, item *it, bool, const tripoint & )
 {
+    if( p->is_mounted() ) {
+        p->add_msg_if_player( m_info, _( "You cannot do that while mounted." ) );
+        return 0;
+    }
     if( !it->ammo_sufficient() ) {
         p->add_msg_if_player( _( "You need soap to use this." ) );
     } else {
@@ -8630,6 +8762,10 @@ int iuse::shavekit( player *p, item *it, bool, const tripoint & )
 
 int iuse::hairkit( player *p, item *it, bool, const tripoint & )
 {
+    if( p->is_mounted() ) {
+        p->add_msg_if_player( m_info, _( "You cannot do that while mounted." ) );
+        return 0;
+    }
     const int moves = to_moves<int>( 30_minutes );
     p->assign_activity( activity_id( "ACT_HAIRCUT" ), moves );
     return it->type->charges_to_use();
@@ -8732,6 +8868,10 @@ int iuse::directional_hologram( player *p, item *it, bool, const tripoint &pos )
 
 int iuse::capture_monster_veh( player *p, item *it, bool, const tripoint &pos )
 {
+    if( p->is_mounted() ) {
+        p->add_msg_if_player( m_info, _( "You cannot do that while mounted." ) );
+        return 0;
+    }
     if( !it->has_flag( "VEHICLE" ) ) {
         p->add_msg_if_player( m_info, _( "The %s must be installed in a vehicle before being loaded." ),
                               it->tname() );
@@ -8801,6 +8941,10 @@ int item::contain_monster( const tripoint &target )
 
 int iuse::capture_monster_act( player *p, item *it, bool, const tripoint &pos )
 {
+    if( p->is_mounted() ) {
+        p->add_msg_if_player( m_info, _( "You cannot capture a creature mounted." ) );
+        return 0;
+    }
     if( it->has_var( "contained_name" ) ) {
         tripoint target;
         if( g->is_empty( pos ) ) {
@@ -8890,7 +9034,10 @@ int iuse::ladder( player *p, item *, bool, const tripoint & )
         debugmsg( "Ladder can't be used in non-z-level mode" );
         return 0;
     }
-
+    if( p->is_mounted() ) {
+        p->add_msg_if_player( m_info, _( "You cannot do that while mounted." ) );
+        return 0;
+    }
     const cata::optional<tripoint> pnt_ = choose_adjacent( _( "Put the ladder where?" ) );
     if( !pnt_ ) {
         return 0;
@@ -8922,7 +9069,10 @@ int iuse::wash_soft_items( player *p, item *, bool, const tripoint & )
         p->add_msg_if_player( _( "You can't see to do that!" ) );
         return 0;
     }
-
+    if( p->is_mounted() ) {
+        p->add_msg_if_player( m_info, _( "You cannot do that while mounted." ) );
+        return 0;
+    }
     // Check that player isn't over volume limit as this might cause it to break... this is a hack.
     // TODO: find a better solution.
     if( p->volume_capacity() < p->volume_carried() ) {
@@ -8940,7 +9090,10 @@ int iuse::wash_hard_items( player *p, item *, bool, const tripoint & )
         p->add_msg_if_player( _( "You can't see to do that!" ) );
         return 0;
     }
-
+    if( p->is_mounted() ) {
+        p->add_msg_if_player( m_info, _( "You cannot do that while mounted." ) );
+        return 0;
+    }
     // Check that player isn't over volume limit as this might cause it to break... this is a hack.
     // TODO: find a better solution.
     if( p->volume_capacity() < p->volume_carried() ) {
@@ -8972,6 +9125,10 @@ int iuse::wash_all_items( player *p, item *, bool, const tripoint & )
 
 int iuse::wash_items( player *p, bool soft_items, bool hard_items )
 {
+    if( p->is_mounted() ) {
+        p->add_msg_if_player( m_info, _( "You cannot do that while mounted." ) );
+        return 0;
+    }
     p->inv.restack( *p );
     const inventory &crafting_inv = p->crafting_inventory();
 
@@ -9134,6 +9291,10 @@ int iuse::panacea( player *p, item *it, bool, const tripoint & )
 
 int iuse::craft( player *p, item *it, bool, const tripoint & )
 {
+    if( p->is_mounted() ) {
+        p->add_msg_if_player( m_info, _( "You cannot do that while mounted." ) );
+        return 0;
+    }
     if( !p->is_wielding( *it ) ) {
         if( !p->is_armed() || query_yn( "Wield the %s and start working?", it->tname() ) ) {
             if( !p->wield( *it ) ) {
@@ -9178,6 +9339,10 @@ int iuse::craft( player *p, item *it, bool, const tripoint & )
 
 int iuse::disassemble( player *p, item *it, bool, const tripoint & )
 {
+    if( p->is_mounted() ) {
+        p->add_msg_if_player( m_info, _( "You cannot do that while mounted." ) );
+        return 0;
+    }
     if( !p->has_item( *it ) ) {
         return 0;
     }
diff --git a/src/iuse_actor.cpp b/src/iuse_actor.cpp
index bd3484c8c2295..210a2f63c427e 100644
--- a/src/iuse_actor.cpp
+++ b/src/iuse_actor.cpp
@@ -520,7 +520,10 @@ int unfold_vehicle_iuse::use( player &p, item &it, bool /*t*/, const tripoint &/
         p.add_msg_if_player( m_info, _( "You can't do that while underwater." ) );
         return 0;
     }
-
+    if( p.is_mounted() ) {
+        p.add_msg_if_player( m_info, _( "You cannot do that while mounted." ) );
+        return 0;
+    }
     for( const auto &tool : tools_needed ) {
         // Amount == -1 means need one, but don't consume it.
         if( !p.has_amount( tool.first, 1 ) ) {
@@ -930,6 +933,11 @@ int pick_lock_actor::use( player &p, item &it, bool, const tripoint & ) const
         return 0;
     }
 
+    if( p.is_mounted() ) {
+        p.add_msg_if_player( m_info, _( "You cannot do that while mounted." ) );
+        return 0;
+    }
+
     std::set<ter_id> allowed_ter_id {
         t_chaingate_l,
         t_door_locked,
@@ -966,6 +974,7 @@ int pick_lock_actor::use( player &p, item &it, bool, const tripoint & ) const
     if( !pnt_ ) {
         pnt_ = choose_adjacent( _( "Use your lockpick where?" ) );
     }
+
     if( !pnt_ ) {
         return 0;
     }
@@ -1109,6 +1118,10 @@ void deploy_furn_actor::load( JsonObject &obj )
 
 int deploy_furn_actor::use( player &p, item &it, bool, const tripoint &pos ) const
 {
+    if( p.is_mounted() ) {
+        p.add_msg_if_player( m_info, _( "You cannot do that while mounted." ) );
+        return 0;
+    }
     tripoint pnt = pos;
     if( pos == p.pos() ) {
         if( const cata::optional<tripoint> pnt_ = choose_adjacent( _( "Deploy where?" ) ) ) {
@@ -1771,7 +1784,10 @@ int cauterize_actor::use( player &p, item &it, bool t, const tripoint & ) const
     if( t ) {
         return 0;
     }
-
+    if( p.is_mounted() ) {
+        p.add_msg_if_player( m_info, _( "You cannot do that while mounted." ) );
+        return 0;
+    }
     bool has_disease = p.has_effect( effect_bite ) || p.has_effect( effect_bleed );
     bool did_cauterize = false;
 
@@ -1811,6 +1827,9 @@ ret_val<bool> cauterize_actor::can_use( const player &p, const item &it, bool,
         return ret_val<bool>::make_failure(
                    _( "You are not bleeding or bitten, there is no need to cauterize yourself." ) );
     }
+    if( p.is_mounted() ) {
+        return ret_val<bool>::make_failure( _( "You cannot cauterize while mounted." ) );
+    }
 
     if( flame ) {
         if( !p.has_charges( "fire", 4 ) ) {
@@ -1846,7 +1865,10 @@ int enzlave_actor::use( player &p, item &it, bool t, const tripoint & ) const
     if( t ) {
         return 0;
     }
-
+    if( p.is_mounted() ) {
+        p.add_msg_if_player( m_info, _( "You cannot do that while mounted." ) );
+        return 0;
+    }
     auto items = g->m.i_at( point( p.posx(), p.posy() ) );
     std::vector<const item *> corpses;
 
@@ -1965,7 +1987,9 @@ ret_val<bool> enzlave_actor::can_use( const player &p, const item &, bool, const
         return ret_val<bool>::make_failure( _( "You need at least %s 1." ),
                                             skill_survival->name() );
     }
-
+    if( p.is_mounted() ) {
+        return ret_val<bool>::make_failure( _( "You cannot do that while mounted." ) );
+    }
     if( p.get_skill_level( skill_firstaid ) < 1 ) {
         //~ %s - name of the required skill.
         return ret_val<bool>::make_failure( _( "You need at least %s 1." ),
@@ -2147,6 +2171,12 @@ void musical_instrument_actor::load( JsonObject &obj )
 
 int musical_instrument_actor::use( player &p, item &it, bool t, const tripoint & ) const
 {
+    if( p.is_mounted() ) {
+        p.add_msg_player_or_npc( m_bad, _( "You can't play music while mounted." ),
+                                 _( "<npcname> can't play music while mounted." ) );
+        it.active = false;
+        return 0;
+    }
     if( p.is_underwater() ) {
         p.add_msg_player_or_npc( m_bad,
                                  _( "You can't play music underwater" ),
@@ -2258,6 +2288,9 @@ ret_val<bool> musical_instrument_actor::can_use( const player &p, const item &,
     if( p.is_underwater() ) {
         return ret_val<bool>::make_failure( _( "You can't do that while underwater." ) );
     }
+    if( p.is_mounted() ) {
+        return ret_val<bool>::make_failure( _( "You can't do that while mounted." ) );
+    }
 
     return ret_val<bool>::make_success();
 }
@@ -2829,6 +2862,13 @@ bool repair_item_actor::can_use_tool( const player &p, const item &tool, bool pr
         }
         return false;
     }
+    if( p.is_mounted() ) {
+        if( print_msg ) {
+            p.add_msg_player_or_npc( m_bad, _( "You can't do that while mounted." ),
+                                     _( "<npcname> can't do that while mounted." ) );
+        }
+        return false;
+    }
     if( p.fine_detail_vision_mod() > 4 ) {
         if( print_msg ) {
             p.add_msg_if_player( m_info, _( "You can't see to do that!" ) );
@@ -3393,7 +3433,10 @@ int heal_actor::use( player &p, item &it, bool, const tripoint &pos ) const
         p.add_msg_if_player( m_info, _( "You can't do that while underwater." ) );
         return 0;
     }
-
+    if( p.is_mounted() ) {
+        p.add_msg_if_player( m_info, _( "You can't do that while mounted." ) );
+        return 0;
+    }
     if( get_option<bool>( "FILTHY_WOUNDS" ) && it.is_filthy() ) {
         p.add_msg_if_player( m_info, _( "You can't use filthy items for healing." ) );
         return 0;
@@ -3861,6 +3904,10 @@ int place_trap_actor::use( player &p, item &it, bool, const tripoint & ) const
         p.add_msg_if_player( m_info, _( "You can't do that while underwater." ) );
         return 0;
     }
+    if( p.is_mounted() ) {
+        p.add_msg_if_player( m_info, _( "You can't do that while mounted." ) );
+        return 0;
+    }
     const cata::optional<tripoint> pos_ = choose_adjacent( string_format( _( "Place %s where?" ),
                                           it.tname() ) );
     if( !pos_ ) {
@@ -4021,7 +4068,9 @@ ret_val<bool> install_bionic_actor::can_use( const player &p, const item &it, bo
     if( !it.is_bionic() ) {
         return ret_val<bool>::make_failure();
     }
-
+    if( p.is_mounted() ) {
+        return ret_val<bool>::make_failure( _( "You can't install bionics while mounted." ) );
+    }
     if( !get_option<bool>( "MANUAL_BIONIC_INSTALLATION" ) &&
         !p.has_trait( trait_id( "DEBUG_BIONICS" ) ) ) {
         return ret_val<bool>::make_failure( _( "You can't self-install bionics." ) );
@@ -4272,7 +4321,10 @@ void deploy_tent_actor::load( JsonObject &obj )
 int deploy_tent_actor::use( player &p, item &it, bool, const tripoint & ) const
 {
     int diam = 2 * radius + 1;
-
+    if( p.is_mounted() ) {
+        p.add_msg_if_player( _( "You cannot do that while mounted." ) );
+        return 0;
+    }
     const cata::optional<tripoint> dir = choose_direction( string_format(
             _( "Put up the %s where (%dx%d clear area)?" ), it.tname(), diam, diam ) );
     if( !dir ) {
@@ -4352,6 +4404,10 @@ void weigh_self_actor::info( const item &, std::vector<iteminfo> &dump ) const
 
 int weigh_self_actor::use( player &p, item &, bool, const tripoint & ) const
 {
+    if( p.is_mounted() ) {
+        p.add_msg_if_player( m_info, _( "You cannot weigh yourself while mounted." ) );
+        return 0;
+    }
     // this is a weight, either in kgs or in lbs.
     double weight = convert_weight( p.get_weight() );
     if( weight > convert_weight( max_weight ) ) {
@@ -4397,7 +4453,10 @@ int sew_advanced_actor::use( player &p, item &it, bool, const tripoint & ) const
     if( p.is_npc() ) {
         return 0;
     }
-
+    if( p.is_mounted() ) {
+        p.add_msg_if_player( m_info, _( "You cannot do that while mounted." ) );
+        return 0;
+    }
     if( p.is_underwater() ) {
         p.add_msg_if_player( m_info, _( "You can't do that while underwater." ) );
         return 0;
diff --git a/src/player.cpp b/src/player.cpp
index 4b443834bd805..9bffa0e60c4fe 100644
--- a/src/player.cpp
+++ b/src/player.cpp
@@ -1561,7 +1561,6 @@ int player::run_cost( int base_cost, bool diag ) const
     if( diag ) {
         movecost *= 0.7071f; // because everything here assumes 100 is base
     }
-    float stamina_modifier;
     const bool flatground = movecost < 105;
     // The "FLAT" tag includes soft surfaces, so not a good fit.
     const bool on_road = flatground && g->m.has_flag( "ROAD", pos() );
@@ -1661,19 +1660,17 @@ int player::run_cost( int base_cost, bool diag ) const
         }
         // Both walk and run speed drop to half their maximums as stamina approaches 0.
         // Convert stamina to a float first to allow for decimal place carrying
-        stamina_modifier = ( static_cast<float>( stamina ) / get_stamina_max() + 1 ) / 2;
-    } else {
-        stamina_modifier = 1.0;
-    }
+        float stamina_modifier = ( static_cast<float>( stamina ) / get_stamina_max() + 1 ) / 2;
+        if( move_mode == PMM_RUN && stamina > 0 ) {
+            // Rationale: Average running speed is 2x walking speed. (NOT sprinting)
+            stamina_modifier *= 2.0;
+        }
+        if( move_mode == PMM_CROUCH ) {
+            stamina_modifier *= 0.5;
+        }
+        movecost /= stamina_modifier;
 
-    if( move_mode == PMM_RUN && stamina > 0 ) {
-        // Rationale: Average running speed is 2x walking speed. (NOT sprinting)
-        stamina_modifier *= 2.0;
-    }
-    if( move_mode == PMM_CROUCH ) {
-        stamina_modifier *= 0.5;
     }
-    movecost /= stamina_modifier;
 
     if( diag ) {
         movecost *= M_SQRT2;