diff --git a/src/game/boe.actions.cpp b/src/game/boe.actions.cpp
index 6cf3bbc2..f47723c0 100644
--- a/src/game/boe.actions.cpp
+++ b/src/game/boe.actions.cpp
@@ -1575,11 +1575,11 @@ bool handle_keystroke(const sf::Event& event){
 	
 	if(event.key.code == kb::Escape) {
 		bool abort=true;
-		if (overall_mode == MODE_TALK_TOWN || overall_mode == MODE_LOOK_TOWN || overall_mode == MODE_TOWN_TARGET)
+		if (overall_mode == MODE_DROP_TOWN || overall_mode == MODE_TALK_TOWN || overall_mode == MODE_LOOK_TOWN || overall_mode == MODE_TOWN_TARGET)
 			overall_mode = MODE_TOWN;
 		else if(overall_mode == MODE_LOOK_OUTDOORS)
 			overall_mode = MODE_OUTDOORS;
-		else if (overall_mode == MODE_LOOK_COMBAT || overall_mode == MODE_SPELL_TARGET || overall_mode == MODE_FANCY_TARGET || overall_mode == MODE_FIRING || overall_mode == MODE_THROWING)
+		else if (overall_mode == MODE_DROP_COMBAT || overall_mode == MODE_LOOK_COMBAT || overall_mode == MODE_SPELL_TARGET || overall_mode == MODE_FANCY_TARGET || overall_mode == MODE_FIRING || overall_mode == MODE_THROWING)
 			overall_mode = MODE_COMBAT;
 		else
 			abort = false;
diff --git a/src/game/boe.graphutil.cpp b/src/game/boe.graphutil.cpp
index fc594577..ae0ffaa6 100644
--- a/src/game/boe.graphutil.cpp
+++ b/src/game/boe.graphutil.cpp
@@ -358,51 +358,55 @@ void draw_fields(location where){
 			Draw_Some_Item(fields_gworld,calc_rect(4,0),terrain_screen_gworld,where_draw,1,0);
 		return;
 	}
-	if(univ.town.is_force_wall(where.x,where.y))
+	if (!univ.town->is_on_map(where))
+		return;
+	auto const fields=univ.town.fields[where.x][where.y];
+	if ((fields&~(unsigned long)SPECIAL_EXPLORED)==0) return;
+	if(univ.town.is_force_wall(fields))
 		Draw_Some_Item(fields_gworld,calc_rect(0,1),terrain_screen_gworld,where_draw,1,0);
-	if(univ.town.is_fire_wall(where.x,where.y))
+	if(univ.town.is_fire_wall(fields))
 		Draw_Some_Item(fields_gworld,calc_rect(1,1),terrain_screen_gworld,where_draw,1,0);
-	if(univ.town.is_antimagic(where.x,where.y))
+	if(univ.town.is_antimagic(fields))
 		Draw_Some_Item(fields_gworld,calc_rect(2,1),terrain_screen_gworld,where_draw,1,0);
-	if(univ.town.is_scloud(where.x,where.y))
+	if(univ.town.is_scloud(fields))
 		Draw_Some_Item(fields_gworld,calc_rect(3,1),terrain_screen_gworld,where_draw,1,0);
-	if(univ.town.is_ice_wall(where.x,where.y))
+	if(univ.town.is_ice_wall(fields))
 		Draw_Some_Item(fields_gworld,calc_rect(4,1),terrain_screen_gworld,where_draw,1,0);
-	if(univ.town.is_blade_wall(where.x,where.y))
+	if(univ.town.is_blade_wall(fields))
 		Draw_Some_Item(fields_gworld,calc_rect(5,1),terrain_screen_gworld,where_draw,1,0);
-	if(univ.town.is_sleep_cloud(where.x,where.y))
+	if(univ.town.is_sleep_cloud(fields))
 		Draw_Some_Item(fields_gworld,calc_rect(6,1),terrain_screen_gworld,where_draw,1,0);
-	if(univ.town.is_block(where.x,where.y))
+	if(univ.town.is_block(fields))
 		Draw_Some_Item(fields_gworld,calc_rect(3,0),terrain_screen_gworld,where_draw,1,0);
-	if(univ.town.is_spot(where.x,where.y))
+	if(univ.town.is_spot(fields))
 		Draw_Some_Item(fields_gworld,calc_rect(4,0),terrain_screen_gworld,where_draw,1,0);
-	if(univ.town.is_web(where.x,where.y))
+	if(univ.town.is_web(fields))
 		Draw_Some_Item(fields_gworld,calc_rect(5,0),terrain_screen_gworld,where_draw,1,0);
-	if(univ.town.is_crate(where.x,where.y))
+	if(univ.town.is_crate(fields))
 		Draw_Some_Item(fields_gworld,calc_rect(6,0),terrain_screen_gworld,where_draw,1,0);
-	if(univ.town.is_barrel(where.x,where.y))
+	if(univ.town.is_barrel(fields))
 		Draw_Some_Item(fields_gworld,calc_rect(7,0),terrain_screen_gworld,where_draw,1,0);
-	if(univ.town.is_fire_barr(where.x,where.y) || univ.town.is_force_barr(where.x,where.y))
+	if(univ.town.is_fire_barr(fields) || univ.town.is_force_barr(fields))
 		Draw_Some_Item(*ResMgr::textures.get("teranim"),calc_rect(8+(anim_ticks%4),4),terrain_screen_gworld,where_draw,1,0);
-	if(univ.town.is_quickfire(where.x,where.y))
+	if(univ.town.is_quickfire(fields))
 		Draw_Some_Item(fields_gworld,calc_rect(7,1),terrain_screen_gworld,where_draw,1,0);
-	if(univ.town.is_sm_blood(where.x,where.y))
+	if(univ.town.is_sm_blood(fields))
 		Draw_Some_Item(fields_gworld,calc_rect(0,3),terrain_screen_gworld,where_draw,1,0);
-	if(univ.town.is_med_blood(where.x,where.y))
+	if(univ.town.is_med_blood(fields))
 		Draw_Some_Item(fields_gworld,calc_rect(1,3),terrain_screen_gworld,where_draw,1,0);
-	if(univ.town.is_lg_blood(where.x,where.y))
+	if(univ.town.is_lg_blood(fields))
 		Draw_Some_Item(fields_gworld,calc_rect(2,3),terrain_screen_gworld,where_draw,1,0);
-	if(univ.town.is_sm_slime(where.x,where.y))
+	if(univ.town.is_sm_slime(fields))
 		Draw_Some_Item(fields_gworld,calc_rect(3,3),terrain_screen_gworld,where_draw,1,0);
-	if(univ.town.is_lg_slime(where.x,where.y))
+	if(univ.town.is_lg_slime(fields))
 		Draw_Some_Item(fields_gworld,calc_rect(4,3),terrain_screen_gworld,where_draw,1,0);
-	if(univ.town.is_ash(where.x,where.y))
+	if(univ.town.is_ash(fields))
 		Draw_Some_Item(fields_gworld,calc_rect(5,3),terrain_screen_gworld,where_draw,1,0);
-	if(univ.town.is_bones(where.x,where.y))
+	if(univ.town.is_bones(fields))
 		Draw_Some_Item(fields_gworld,calc_rect(6,3),terrain_screen_gworld,where_draw,1,0);
-	if(univ.town.is_rubble(where.x,where.y))
+	if(univ.town.is_rubble(fields))
 		Draw_Some_Item(fields_gworld,calc_rect(7,3),terrain_screen_gworld,where_draw,1,0);
-	if(univ.town.is_force_cage(where.x,where.y)) {
+	if(univ.town.is_force_cage(fields)) {
 		Draw_Some_Item(fields_gworld,calc_rect(1,0),terrain_screen_gworld,where_draw,1,0);
 		forcecage_locs.push_back(where_draw);
 	}
diff --git a/src/game/boe.items.cpp b/src/game/boe.items.cpp
index d9c3d08e..3e69964f 100644
--- a/src/game/boe.items.cpp
+++ b/src/game/boe.items.cpp
@@ -385,13 +385,13 @@ static void put_item_graphics(cDialog& me, size_t& first_item_shown, short& curr
 		else me.addLabelFor(id,"    ", LABEL_LEFT, 7, true);
 	}
 	
+	if (first_item_shown >= item_array.size())
+		first_item_shown=std::max(size_t(8),item_array.size())-8;
 	// darken arrows, as appropriate
 	if(first_item_shown == 0)
 		me["up"].hide();
 	else me["up"].show();
-	// ASAN undefined behaviour, ie. item_array.size can be less than 7
-	if(first_item_shown+7 > item_array.size() ||
-	   item_array.size() <= 8)
+	if(first_item_shown+8 >= item_array.size())
 		me["down"].hide();
 	else me["down"].show();
 	
diff --git a/src/game/boe.text.cpp b/src/game/boe.text.cpp
index 3ffe5a22..6981b8f0 100644
--- a/src/game/boe.text.cpp
+++ b/src/game/boe.text.cpp
@@ -1048,7 +1048,7 @@ void print_buf () {
 	long start_print_point;
 	rectangle store_text_rect,dest_rect,erase_rect = {2,2,136,255};
 	
-	text_area_gworld.setActive();
+	text_area_gworld.setActive(false);
 	
 	// First clean up gworld with pretty patterns
 	tileImage(text_area_gworld, erase_rect,bg[6]);
@@ -1077,6 +1077,7 @@ void print_buf () {
 	}
 	
 	text_area_gworld.display();
+	text_area_gworld.setActive();
 }
 
 void restart_printing() {
diff --git a/src/universe/universe.cpp b/src/universe/universe.cpp
index 86b87d89..2f5a0683 100644
--- a/src/universe/universe.cpp
+++ b/src/universe/universe.cpp
@@ -208,60 +208,61 @@ cTown*const cCurTown::record() const {
 
 bool cCurTown::is_explored(short x, short y) const{
 	if(!record()->is_on_map(x,y)) return false;
-	return fields[x][y] & SPECIAL_EXPLORED;
+	return is_explored(fields[x][y]);
 }
 
 bool cCurTown::is_force_wall(short x, short y) const{
 	if(!record()->is_on_map(x,y)) return false;
-	return fields[x][y] & WALL_FORCE;
+	return is_force_wall(fields[x][y]);
 }
 
 bool cCurTown::is_fire_wall(short x, short y) const{
 	if(!record()->is_on_map(x,y)) return false;
-	return fields[x][y] & WALL_FIRE;
+	return is_fire_wall(fields[x][y]);
 }
 
 bool cCurTown::is_antimagic(short x, short y) const{
 	if(!record()->is_on_map(x,y)) return false;
-	return fields[x][y] & FIELD_ANTIMAGIC;
+	return is_antimagic(fields[x][y]);
 }
 
 bool cCurTown::is_scloud(short x, short y) const{ // stinking cloud
 	if(!record()->is_on_map(x,y)) return false;
-	return fields[x][y] & CLOUD_STINK;
+	return is_scloud(fields[x][y]);
 }
 
 bool cCurTown::is_ice_wall(short x, short y) const{
 	if(!record()->is_on_map(x,y)) return false;
-	return fields[x][y] & WALL_ICE;
+	return is_ice_wall(fields[x][y]);
 }
 
 bool cCurTown::is_blade_wall(short x, short y) const{
 	if(!record()->is_on_map(x,y)) return false;
-	return fields[x][y] & WALL_BLADES;
+	return is_blade_wall(fields[x][y]);
 }
 
 bool cCurTown::is_sleep_cloud(short x, short y) const{
 	if(!record()->is_on_map(x,y)) return false;
-	return fields[x][y] & CLOUD_SLEEP;
+	return is_sleep_cloud(fields[x][y]);
 }
 
 bool cCurTown::is_block(short x, short y) const{ // currently unused
 	if(!record()->is_on_map(x,y)) return false;
-	return fields[x][y] & OBJECT_BLOCK;
+	return is_block(fields[x][y]);
 }
 
 bool cCurTown::is_spot(short x, short y) const{
 	if(!record()->is_on_map(x,y)) return false;
-	return fields[x][y] & SPECIAL_SPOT;
+	return is_spot(fields[x][y]);
 }
 
 bool cCurTown::is_road(short x, short y) const{
 	if(!record()->is_on_map(x,y)) return false;
-	return fields[x][y] & SPECIAL_ROAD;
+	return is_road(fields[x][y]);
 }
 
 bool cCurTown::is_special(short x, short y) const{
+	if(!record()->is_on_map(x,y)) return false;
 	location check(x,y);
 	for(int i = 0; i < record()->special_locs.size(); i++)
 		if(check == record()->special_locs[i] && record()->special_locs[i].spec >= 0)
@@ -271,77 +272,77 @@ bool cCurTown::is_special(short x, short y) const{
 
 bool cCurTown::is_web(short x, short y) const{
 	if(!record()->is_on_map(x,y)) return false;
-	return fields[x][y] & FIELD_WEB;
+	return is_web(fields[x][y]);
 }
 
 bool cCurTown::is_crate(short x, short y) const{
 	if(!record()->is_on_map(x,y)) return false;
-	return fields[x][y] & OBJECT_CRATE;
+	return is_crate(fields[x][y]);
 }
 
 bool cCurTown::is_barrel(short x, short y) const{
 	if(!record()->is_on_map(x,y)) return false;
-	return fields[x][y] & OBJECT_BARREL;
+	return is_barrel(fields[x][y]);
 }
 
 bool cCurTown::is_fire_barr(short x, short y) const{
 	if(!record()->is_on_map(x,y)) return false;
-	return fields[x][y] & BARRIER_FIRE;
+	return is_fire_barr(fields[x][y]);
 }
 
 bool cCurTown::is_force_barr(short x, short y) const{
 	if(!record()->is_on_map(x,y)) return false;
-	return fields[x][y] & BARRIER_FORCE;
+	return is_force_barr(fields[x][y]);
 }
 
 bool cCurTown::is_quickfire(short x, short y) const{
 	if(!record()->is_on_map(x,y)) return false;
-	return fields[x][y] & FIELD_QUICKFIRE;
+	return is_quickfire(fields[x][y]);
 }
 
 bool cCurTown::is_sm_blood(short x, short y) const{
 	if(!record()->is_on_map(x,y)) return false;
-	return fields[x][y] & SFX_SMALL_BLOOD;
+	return is_sm_blood(fields[x][y]);
 }
 
 bool cCurTown::is_med_blood(short x, short y) const{
 	if(!record()->is_on_map(x,y)) return false;
-	return fields[x][y] & SFX_MEDIUM_BLOOD;
+	return is_med_blood(fields[x][y]);
 }
 
 bool cCurTown::is_lg_blood(short x, short y) const{
 	if(!record()->is_on_map(x,y)) return false;
-	return fields[x][y] & SFX_LARGE_BLOOD;
+	return is_lg_blood(fields[x][y]);
 }
 
 bool cCurTown::is_sm_slime(short x, short y) const{
 	if(!record()->is_on_map(x,y)) return false;
-	return fields[x][y] & SFX_SMALL_SLIME;
+	return is_sm_slime(fields[x][y]);
 }
 
 bool cCurTown::is_lg_slime(short x, short y) const{
 	if(!record()->is_on_map(x,y)) return false;
-	return fields[x][y] & SFX_LARGE_SLIME;
+	return is_lg_slime(fields[x][y]);
 }
 
 bool cCurTown::is_ash(short x, short y) const{
 	if(!record()->is_on_map(x,y)) return false;
-	return fields[x][y] & SFX_ASH;
+	return is_ash(fields[x][y]);
 }
 
 bool cCurTown::is_bones(short x, short y) const{
 	if(!record()->is_on_map(x,y)) return false;
-	return fields[x][y] & SFX_BONES;
+	return is_bones(fields[x][y]);
 }
 
 bool cCurTown::is_rubble(short x, short y) const{
 	if(!record()->is_on_map(x,y)) return false;
-	return fields[x][y] & SFX_RUBBLE;
+	return is_rubble(fields[x][y]);
 }
 
 bool cCurTown::is_force_cage(short x, short y) const{
 	if(!record()->is_on_map(x,y)) return false;
-	return fields[x][y] & BARRIER_CAGE;
+	return is_force_cage(fields[x][y]);
 }
 
 bool cCurTown::set_explored(short x, short y, bool b){
diff --git a/src/universe/universe.hpp b/src/universe/universe.hpp
index 44a920bb..cbb6d9b7 100644
--- a/src/universe/universe.hpp
+++ b/src/universe/universe.hpp
@@ -61,6 +61,32 @@ public:
 	void prep_arena(); // Set up for a combat arena
 	void place_preset_fields();
 	
+	static bool is_explored(unsigned long allFields) { return allFields & SPECIAL_EXPLORED; }
+	static bool is_force_wall(unsigned long allFields) { return allFields & WALL_FORCE; }
+	static bool is_fire_wall(unsigned long allFields) { return allFields & WALL_FIRE; }
+	static bool is_antimagic(unsigned long allFields) { return allFields & FIELD_ANTIMAGIC; }
+	static bool is_scloud(unsigned long allFields) { return allFields & CLOUD_STINK; } // stinking cloud
+	static bool is_ice_wall(unsigned long allFields) { return allFields & WALL_ICE; }
+	static bool is_blade_wall(unsigned long allFields) { return allFields & WALL_BLADES; }
+	static bool is_sleep_cloud(unsigned long allFields) { return allFields & CLOUD_SLEEP; }
+	static bool is_block(unsigned long allFields) { return allFields & OBJECT_BLOCK; } // currently unused
+	static bool is_spot(unsigned long allFields) { return allFields & SPECIAL_SPOT; }
+	static bool is_web(unsigned long allFields) { return allFields & FIELD_WEB; }
+	static bool is_crate(unsigned long allFields) { return allFields & OBJECT_CRATE; }
+	static bool is_barrel(unsigned long allFields) { return allFields & OBJECT_BARREL; }
+	static bool is_fire_barr(unsigned long allFields) { return allFields & BARRIER_FIRE; }
+	static bool is_force_barr(unsigned long allFields) { return allFields & BARRIER_FORCE; }
+	static bool is_quickfire(unsigned long allFields) { return allFields & FIELD_QUICKFIRE; }
+	static bool is_sm_blood(unsigned long allFields) { return allFields & SFX_SMALL_BLOOD; }
+	static bool is_med_blood(unsigned long allFields) { return allFields & SFX_MEDIUM_BLOOD; }
+	static bool is_lg_blood(unsigned long allFields) { return allFields & SFX_LARGE_BLOOD; }
+	static bool is_sm_slime(unsigned long allFields) { return allFields & SFX_SMALL_SLIME; }
+	static bool is_lg_slime(unsigned long allFields) { return allFields & SFX_LARGE_SLIME; }
+	static bool is_ash(unsigned long allFields) { return allFields & SFX_ASH; }
+	static bool is_bones(unsigned long allFields) { return allFields & SFX_BONES; }
+	static bool is_rubble(unsigned long allFields) { return allFields & SFX_RUBBLE; }
+	static bool is_force_cage(unsigned long allFields) { return allFields & BARRIER_CAGE; }
+	static bool is_road(unsigned long allFields) { return allFields & SPECIAL_ROAD; }
 	bool is_explored(short x, short y) const;
 	bool is_force_wall(short x, short y) const;
 	bool is_fire_wall(short x, short y) const;