diff --git a/source/jdraw.cpp b/source/jdraw.cpp
index 27b18b8..54acf7f 100644
--- a/source/jdraw.cpp
+++ b/source/jdraw.cpp
@@ -504,6 +504,17 @@ namespace draw
         sel_color = col;
     }
 
+    void isoline(int x, int y, const int dx, const int dy, const int len)
+    {
+        for (int i=0; i<len; ++i)
+        {
+            pset(destination, x,y, sel_color);
+            x+=dx;
+            pset(destination, x,y, sel_color);
+            x+=dx; y+=dy;
+        }
+    }
+
     void hline(const int x, const int y, const int w)
     {
         for (int i=x;i<x+w;++i) pset(destination, i, y, sel_color);
diff --git a/source/jdraw.h b/source/jdraw.h
index 4402145..dd3dae4 100644
--- a/source/jdraw.h
+++ b/source/jdraw.h
@@ -108,6 +108,7 @@ namespace draw
     void swapcol(const uint8_t c1, const uint8_t c2);
     void restorecol(const uint8_t c);
     void color(const uint8_t col);
+    void isoline(int x, int y, const int dx, const int dy, const int len);
     void hline(const int x, const int y, const int w);
     void vline(const int x, const int y, const int h);
     void fillrect(const int x, const int y, const int w, const int h);
diff --git a/source/m_editor_map.cpp b/source/m_editor_map.cpp
index 0a7fd4f..780cc9c 100644
--- a/source/m_editor_map.cpp
+++ b/source/m_editor_map.cpp
@@ -11,7 +11,7 @@ namespace modules
     {
         draw::surface *surf;
         vec2_t scroll {0,0};
-        bool drawn[64];
+        int drawn[64];
         int current_room;
 
         struct miniroom_t
@@ -23,6 +23,49 @@ namespace modules
         };
         miniroom_t minirooms[64];
 
+        void drawLines(const int room, const int x, const int y)
+        {
+            if (drawn[room]) return;
+            drawn[room] = true;
+            if ( (x>=-32) && (x<520) && (y>=-16) && (y<240) )
+            {
+                draw::color(RED);
+                if (minirooms[room].exits[XN] != 255) { draw::isoline(x,y,-1,-1,14); draw::isoline(x,y-1,-1,-1,14); draw::isoline(x,y+1,-1,-1,14); }
+                if (minirooms[room].exits[YN] != 255) { draw::isoline(x,y,+1,-1,14); draw::isoline(x,y-1,+1,-1,14); draw::isoline(x,y+1,+1,-1,14); }
+                if (minirooms[room].exits[XP] != 255) { draw::isoline(x,y,+1,+1,14); draw::isoline(x,y-1,+1,+1,14); draw::isoline(x,y+1,+1,+1,14); }
+                if (minirooms[room].exits[YP] != 255) { draw::isoline(x,y,-1,+1,14); draw::isoline(x,y-1,-1,+1,14); draw::isoline(x,y+1,-1,+1,14); }
+            }
+            if (minirooms[room].exits[XN] != 255) drawLines(minirooms[room].exits[XN], x-24, y-12);
+            if (minirooms[room].exits[XP] != 255) drawLines(minirooms[room].exits[XP], x+24, y+12);
+            if (minirooms[room].exits[YN] != 255) drawLines(minirooms[room].exits[YN], x+24, y-12);
+            if (minirooms[room].exits[YP] != 255) drawLines(minirooms[room].exits[YP], x-24, y+12);
+        }
+
+        void drawRoom(const int room, const int x, const int y)
+        {
+            if (drawn[room]) return;
+            drawn[room] = true;
+            if ( (x>=-32) && (x<520) && (y>=-16) && (y<240) )
+            {
+                draw::stencil::set(room);
+                draw::swapcol(1, minirooms[room].color);
+                draw::draw(x-16, y-8, 32, 16, minirooms[room].w*32, minirooms[room].h*16);
+                
+                //draw::swapcol(1, RED);
+                //if (minirooms[room].exits[XN] != 255) draw::draw(x-4-(minirooms[room].w*2), y-5-(minirooms[room].w),4,5,0,64);
+                //if (minirooms[room].exits[YN] != 255) draw::draw(x+(minirooms[room].h*2), y-5-(minirooms[room].h),4,5,3,64);
+                //if (minirooms[room].exits[XP] != 255) draw::draw(x+(minirooms[room].w*2), y-3+(minirooms[room].w),4,5,0,64);
+                //if (minirooms[room].exits[YP] != 255) draw::draw(x-4-(minirooms[room].h*2), y-3+(minirooms[room].h),4,5,3,64);
+
+                char num[] = "00"; num[0] = 48+(room/10); num[1] = 48+(room%10);
+                draw::print(num, x-4, y-3, LIGHT+(room==current_room?YELLOW:WHITE), BLACK);
+            }
+            if (minirooms[room].exits[XN] != 255) drawRoom(minirooms[room].exits[XN], x-24, y-12);
+            if (minirooms[room].exits[XP] != 255) drawRoom(minirooms[room].exits[XP], x+24, y+12);
+            if (minirooms[room].exits[YN] != 255) drawRoom(minirooms[room].exits[YN], x+24, y-12);
+            if (minirooms[room].exits[YP] != 255) drawRoom(minirooms[room].exits[YP], x-24, y+12);
+        }
+
         void loadMiniRoom()
         {
             const int room = room::getCurrent();
@@ -53,45 +96,32 @@ namespace modules
             current_room = room::getCurrent();
             loadMiniRoom();
             room::load(current_room);
+
+            for (int i=0;i<64;++i) drawn[i]=false;
+            draw::cls(2);
+            draw::setSource(surf);
+
+            drawLines(room::getCurrent(), scroll.x, scroll.y);
+
+            draw::swapcol(1, RED);
+            for (int y=-1; y<=1; ++y)
+                for (int x=-1; x<=1; ++x)
+                {
+                    for (int i=0;i<64;++i) drawn[i]=false;
+                    drawRoom(room::getCurrent(), scroll.x+x, scroll.y+y);
+                }
+
         }
 
-        void drawRoom(const int room, const int x, const int y)
-        {
-            if (drawn[room]) return;
-            drawn[room] = true;
-            if ( (x>=-32) && (x<520) && (y>=-16) && (y<240) )
-            {
-                draw::stencil::set(room);
-                draw::swapcol(1, minirooms[room].color);
-                draw::draw(x-16, y-8, 32, 16, minirooms[room].w*32, minirooms[room].h*16);
-
-                draw::swapcol(1, RED);
-                if (minirooms[room].exits[XN] != 255) draw::draw(x-4-(minirooms[room].w*2), y-5-(minirooms[room].w),4,5,0,64);
-                if (minirooms[room].exits[YN] != 255) draw::draw(x+(minirooms[room].h*2), y-5-(minirooms[room].h),4,5,3,64);
-                if (minirooms[room].exits[XP] != 255) draw::draw(x+(minirooms[room].w*2), y-3+(minirooms[room].w),4,5,0,64);
-                if (minirooms[room].exits[YP] != 255) draw::draw(x-4-(minirooms[room].h*2), y-3+(minirooms[room].h),4,5,3,64);
-
-                char num[] = "00"; num[0] = 48+(room/10); num[1] = 48+(room%10);
-                draw::print(num, x-4, y-3, LIGHT+(room==current_room?YELLOW:WHITE), BLACK);
-            }
-            if (minirooms[room].exits[XN] != 255) drawRoom(minirooms[room].exits[XN], x-24, y-12);
-            if (minirooms[room].exits[XP] != 255) drawRoom(minirooms[room].exits[XP], x+24, y+12);
-            if (minirooms[room].exits[YN] != 255) drawRoom(minirooms[room].exits[YN], x+24, y-12);
-            if (minirooms[room].exits[YP] != 255) drawRoom(minirooms[room].exits[YP], x-24, y+12);
-        }
 
         bool loop()
         {
-            for (int i=0;i<64;++i) drawn[i]=false;
-
             if (input::keyPressed(SDL_SCANCODE_ESCAPE) || input::keyPressed(SDL_SCANCODE_TAB)) return false;
 
-            draw::cls(2);
-            draw::setSource(surf);
-
             draw::stencil::enable();
             draw::stencil::clear(255);
 
+            for (int i=0;i<64;++i) drawn[i]=false;
             drawRoom(room::getCurrent(), scroll.x, scroll.y);
             draw::render();