diff --git a/polymer/eduke32/source/gamedef.c b/polymer/eduke32/source/gamedef.c
index 042bc0ef9..783ae63c9 100644
--- a/polymer/eduke32/source/gamedef.c
+++ b/polymer/eduke32/source/gamedef.c
@@ -433,6 +433,7 @@ char *keyw[] = {
                    "setinput",                 // 286
                    "getinput",                 // 287
                    "save",					   // 288
+                   "cansee",                   // 289
                    "<null>"
                };
 
@@ -3850,9 +3851,10 @@ char parsecommand(void)
         break;
 
     case CON_HITSCAN:
+    case CON_CANSEE:
         // get the ID of the DEF
-        transmultvars(7);
-        transmultvarstype(GAMEVAR_FLAG_READONLY,6);
+        transmultvars(tw==CON_CANSEE?8:7);
+        transmultvarstype(GAMEVAR_FLAG_READONLY,tw==CON_CANSEE?1:6);
         transvar();
         break;
 
diff --git a/polymer/eduke32/source/gamedef.h b/polymer/eduke32/source/gamedef.h
index 4d2989422..2f5b68a25 100644
--- a/polymer/eduke32/source/gamedef.h
+++ b/polymer/eduke32/source/gamedef.h
@@ -713,5 +713,6 @@ enum keywords {
     CON_SETINPUT,           // 286
     CON_GETINPUT,           // 287
 	CON_SAVE,				// 288
+    CON_CANSEE,             // 289
     END
 };
diff --git a/polymer/eduke32/source/gameexec.c b/polymer/eduke32/source/gameexec.c
index 9d77c8479..06e5c9592 100644
--- a/polymer/eduke32/source/gameexec.c
+++ b/polymer/eduke32/source/gameexec.c
@@ -4688,6 +4688,25 @@ SKIPJIBS:
             break;
         }
 
+    case CON_CANSEE:
+        {
+            long x1, y1, z1, sect1, x2, y2, z2, sect2, r, rvar;
+
+            insptr++;
+            x1=GetGameVarID(*insptr++,g_i,g_p);
+            y1=GetGameVarID(*insptr++,g_i,g_p);
+            z1=GetGameVarID(*insptr++,g_i,g_p);
+            sect1=GetGameVarID(*insptr++,g_i,g_p);
+            x2=GetGameVarID(*insptr++,g_i,g_p);
+            y2=GetGameVarID(*insptr++,g_i,g_p);
+            z2=GetGameVarID(*insptr++,g_i,g_p);
+            sect2=GetGameVarID(*insptr++,g_i,g_p);
+            rvar=*insptr++;
+            r = cansee(x1,y1,z1,sect1,x2,y2,z2,sect2);
+            SetGameVarID(rvar, r, g_i, g_p);
+            break;
+        }
+
     case CON_ROTATEPOINT:
         {
             long xpivot, ypivot, x, y, x2, y2, x2var, y2var;