--- a/mm7_1.cpp	Thu Mar 14 23:44:03 2013 +0200
+++ b/mm7_1.cpp	Fri Mar 15 04:13:24 2013 +0200
@@ -5826,7 +5826,7 @@
   else
   {
     dword_50B700 = 0;
-    if ( !v1->TwoSided() )
+    if ( !v1->Portal() )
       return 0;
   }
   //v66 = v1->uNumVertices;
@@ -6122,15 +6122,15 @@
         v70 = (signed int)(v56 - v58) * (signed __int64)(dword_50BAD4[v57 - 1] - dword_50BAD4[v57]) / (dword_50B9E4[v57 - 1] - v58);
         v59 = dword_50BAD4[v57];
       }
-      dword_50BAC8[v55] = v70 + v59;
+      _50BAC8_screen_space_x[v55] = v70 + v59;
       v56 = pBLVRenderParams->uViewportW;
-      dword_50B9D8_ys[v55] = pBLVRenderParams->uViewportW;
+      _50B9D8_screen_space_y[v55] = pBLVRenderParams->uViewportW;
       ++v55;
     }
     if ( v85 )
     {
-      dword_50BAC8[v55] = dword_50BAD4[v57];
-      dword_50B9D8_ys[v55++] = dword_50B9E4[v57];
+      _50BAC8_screen_space_x[v55] = dword_50BAD4[v57];
+      _50B9D8_screen_space_y[v55++] = dword_50B9E4[v57];
     }
     ++ie;
     thise = v85;
@@ -6140,12 +6140,12 @@
   if ( !v55 )
     return 0;
   v61 = pRenderer->pRenderD3D == 0;
-  dword_50BAC8[v55] = dword_50BAC8[0];
-  dword_50B9D8_ys[v55] = dword_50B9D8_ys[0];
+  _50BAC8_screen_space_x[v55] = _50BAC8_screen_space_x[0];
+  _50B9D8_screen_space_y[v55] = _50B9D8_screen_space_y[0];
   if ( v61 && v55 > 3 )
   {
-    dword_50BAC8[v55 + 1] = dword_50BAC8[1];
-    dword_50B9D8_ys[v55 + 1] = dword_50B9D8_ys[1];
+    _50BAC8_screen_space_x[v55 + 1] = _50BAC8_screen_space_x[1];
+    _50B9D8_screen_space_y[v55 + 1] = _50B9D8_screen_space_y[1];
     thisf = 2 * (dword_50B700 != 0) - 1;
     if ( v55 > 0 )
     {
@@ -6163,8 +6163,8 @@
         if ( v64 >= v55 )
           v64 -= v55;
         if ( thisf
-           * ((dword_50B9D8_ys[v64] - dword_50B9D8_ys[v63]) * (dword_50BAC8[v62] - dword_50BAC8[v63])
-            - (dword_50B9D8_ys[v62] - dword_50B9D8_ys[v63]) * (dword_50BAC8[v64] - dword_50BAC8[v63])) < 0 )
+           * ((_50B9D8_screen_space_y[v64] - _50B9D8_screen_space_y[v63]) * (_50BAC8_screen_space_x[v62] - _50BAC8_screen_space_x[v63])
+            - (_50B9D8_screen_space_y[v62] - _50B9D8_screen_space_y[v63]) * (_50BAC8_screen_space_x[v64] - _50BAC8_screen_space_x[v63])) < 0 )
         {
           v62 = v80;
           v71 = v80;
@@ -6175,16 +6175,16 @@
           v65 = v71;
           if ( v71 < v55 || (v65 = v71 - v55, v71 - v55 < v55) )
           {
-            memcpy(&dword_50B9D8_ys[v65], &dword_50B9D8_ys[v65 + 1], 4 * ((unsigned int)(4 * (v55 - v65)) >> 2));
-            memcpy(&dword_50BAC8[v65], &dword_50BAC8[v65 + 1], 4 * ((unsigned int)(4 * (v55 - v65)) >> 2));
+            memcpy(&_50B9D8_screen_space_y[v65], &_50B9D8_screen_space_y[v65 + 1], 4 * ((unsigned int)(4 * (v55 - v65)) >> 2));
+            memcpy(&_50BAC8_screen_space_x[v65], &_50BAC8_screen_space_x[v65 + 1], 4 * ((unsigned int)(4 * (v55 - v65)) >> 2));
           }
           --v55;
         }
       }
       while ( v62 - 1 < v55 );
     }
-    dword_50BAC8[v55] = dword_50BAC8[0];
-    dword_50B9D8_ys[v55] = dword_50B9D8_ys[0];
+    _50BAC8_screen_space_x[v55] = _50BAC8_screen_space_x[0];
+    _50B9D8_screen_space_y[v55] = _50B9D8_screen_space_y[0];
   }
   return v55;
 }
@@ -6544,23 +6544,23 @@
   v60 = a2;
   if ( !a1
     || (!dword_50B700 ? (v64 = -1, v6 = 1, v63 = 1) : (v6 = 1, v63 = -1, v64 = 1),
-        v7 = dword_50B9D8_ys[0],
+        v7 = _50B9D8_screen_space_y[0],
         v65 = 0,
-        v8 = dword_50B9D8_ys[0],
+        v8 = _50B9D8_screen_space_y[0],
         a1 <= v6) )
     return 0;
   do
   {
-    v9 = dword_50B9D8_ys[v6];
+    v9 = _50B9D8_screen_space_y[v6];
     if ( v9 >= v7 )
     {
       if ( v9 > v8 )
-        v8 = dword_50B9D8_ys[v6];
+        v8 = _50B9D8_screen_space_y[v6];
     }
     else
     {
       v65 = v6;
-      v7 = dword_50B9D8_ys[v6];
+      v7 = _50B9D8_screen_space_y[v6];
     }
     ++v6;
   }
@@ -6588,8 +6588,8 @@
       {
         v10 -= v74;
       }
-      v12 = dword_50B9D8_ys[v10];
-      if ( v12 <= dword_50B9D8_ys[v11] )
+      v12 = _50B9D8_screen_space_y[v10];
+      if ( v12 <= _50B9D8_screen_space_y[v11] )
       {
         v55 = v10;
         v11 = v10;
@@ -6614,12 +6614,12 @@
   }
   v67 = v13;
 LABEL_27:
-  if ( dword_50B9D8_ys[v13] != dword_50B9D8_ys[v55] )
+  if ( _50B9D8_screen_space_y[v13] != _50B9D8_screen_space_y[v55] )
   {
-    v14 = dword_50BAC8[v55];
+    v14 = _50BAC8_screen_space_x[v55];
     v62 = v14 << 16;
-    v54 = ((dword_50BAC8[v13] - v14) << 16) / (dword_50B9D8_ys[v13] - dword_50B9D8_ys[v55]);
-    v5->array_18[v7] = LOWORD(dword_50BAC8[v55]);
+    v54 = ((_50BAC8_screen_space_x[v13] - v14) << 16) / (_50B9D8_screen_space_y[v13] - _50B9D8_screen_space_y[v55]);
+    v5->array_18[v7] = LOWORD(_50BAC8_screen_space_x[v55]);
   }
   v15 = v65;
   v69 = 0;
@@ -6639,8 +6639,8 @@
       {
         v15 -= v74;
       }
-      v17 = dword_50B9D8_ys[v15];
-      if ( v17 <= dword_50B9D8_ys[v16] )
+      v17 = _50B9D8_screen_space_y[v15];
+      if ( v17 <= _50B9D8_screen_space_y[v16] )
       {
         v61 = v15;
         v16 = v15;
@@ -6667,14 +6667,14 @@
 LABEL_44:
   v19 = v18;
   v20 = v61;
-  v53 = dword_50B9D8_ys[v19] - dword_50B9D8_ys[v61];
-  if ( dword_50B9D8_ys[v19] != dword_50B9D8_ys[v61] )
+  v53 = _50B9D8_screen_space_y[v19] - _50B9D8_screen_space_y[v61];
+  if ( _50B9D8_screen_space_y[v19] != _50B9D8_screen_space_y[v61] )
   {
-    v21 = dword_50BAC8[v20];
+    v21 = _50BAC8_screen_space_x[v20];
     v5 = v60;
     v61 = v21 << 16;
-    v53 = ((dword_50BAC8[v19] - v21) << 16) / v53;
-    v60->array_3D8[v73] = LOWORD(dword_50BAC8[v20]);
+    v53 = ((_50BAC8_screen_space_x[v19] - v21) << 16) / v53;
+    v60->array_3D8[v73] = LOWORD(_50BAC8_screen_space_x[v20]);
   }
   v22 = v7;
   v70 = v7;
@@ -6685,7 +6685,7 @@
     do
     {
       v24 = v67;
-      if ( v22 < dword_50B9D8_ys[v67] || v22 == v73 )
+      if ( v22 < _50B9D8_screen_space_y[v67] || v22 == v73 )
         goto LABEL_57;
       v25 = v64 + v67;
       v67 = v25;
@@ -6702,16 +6702,16 @@
       v67 = v25;
 LABEL_55:
       v26 = v25;
-      v27 = dword_50B9D8_ys[v26] - dword_50B9D8_ys[v24];
-      if ( dword_50B9D8_ys[v26] - dword_50B9D8_ys[v24] > 0 )
+      v27 = _50B9D8_screen_space_y[v26] - _50B9D8_screen_space_y[v24];
+      if ( _50B9D8_screen_space_y[v26] - _50B9D8_screen_space_y[v24] > 0 )
       {
-        v28 = dword_50BAC8[v24];
-        v54 = ((dword_50BAC8[v26] - v28) << 16) / v27;
+        v28 = _50BAC8_screen_space_x[v24];
+        v54 = ((_50BAC8_screen_space_x[v26] - v28) << 16) / v27;
         v62 = v28 << 16;
       }
 LABEL_57:
       v29 = v66;
-      if ( v70 >= dword_50B9D8_ys[v66] && v70 != v73 )
+      if ( v70 >= _50B9D8_screen_space_y[v66] && v70 != v73 )
       {
         v30 = v63 + v66;
         v66 += v63;
@@ -6727,11 +6727,11 @@
           v66 = v30;
         }
         v31 = v30;
-        v32 = dword_50B9D8_ys[v31] - dword_50B9D8_ys[v29];
-        if ( dword_50B9D8_ys[v31] - dword_50B9D8_ys[v29] > 0 )
+        v32 = _50B9D8_screen_space_y[v31] - _50B9D8_screen_space_y[v29];
+        if ( _50B9D8_screen_space_y[v31] - _50B9D8_screen_space_y[v29] > 0 )
         {
-          v33 = dword_50BAC8[v29];
-          v53 = ((dword_50BAC8[v31] - v33) << 16) / v32;
+          v33 = _50BAC8_screen_space_x[v29];
+          v53 = ((_50BAC8_screen_space_x[v31] - v33) << 16) / v32;
           v61 = v33 << 16;
         }
       }