surface 3D graphics are now automatically disabled in rug (won't work correctly with quotient rugs anyway) and in pmodels which do not support it

config.cpp

@@ -1294,10 +1294,18 @@ void show3D() {
   dialog::addSelItem(XLAT("model used"), conformal::get_model_name(pmodel), 'M');
   
   dialog::addBreak(50);
-  if(!(wmspatial || mmspatial))
+  if(rug::rugged) {
+    dialog::addBoolItem(XLAT("3D monsters/walls on the surface"), rug::spatial_rug, 'S');
+    dialog::add_action([] () { rug::spatial_rug = !rug::spatial_rug; });
+    }
+  if(rug::rugged && !rug::spatial_rug)
+    dialog::addBreak(100);
+  else if(non_spatial_model())
+    dialog::addInfo(XLAT("no 3D effects available in this projection"), 0xC00000);
+  else if(!spatial_graphics)
     dialog::addInfo(XLAT("set 3D monsters or walls in basic config first"));
   else if(invalid != "")
-    dialog::addInfo(XLAT("error: "+invalid));
+    dialog::addInfo(XLAT("error: "+invalid), 0xC00000);
   else
     dialog::addInfo(XLAT("parameters set correctly"));
   dialog::addBreak(50);

graph.cpp

@@ -8,6 +8,7 @@ namespace hr {
 
 int inmirrorcount = 0;
 
+bool spatial_graphics;
 bool wmspatial, wmescher, wmplain, wmblack, wmascii;
 bool mmspatial, mmhigh, mmmon, mmitem;
 
@@ -5301,6 +5302,13 @@ void drawthemap() {
   mmmon = vid.monmode >= 2;
   mmhigh = vid.monmode == 3 || vid.monmode == 5;
   mmspatial = vid.monmode == 4 || vid.monmode == 5;
+  
+  spatial_graphics = wmspatial || mmspatial;
+  if(rug::rugged && !rug::spatial_rug) spatial_graphics = false;
+  if(non_spatial_model())
+    spatial_graphics = false;
+  
+  if(!spatial_graphics) wmspatial = mmspatial = false;
 
   DEBB(DF_GRAPH, (debugfile,"draw the map\n"));
   

hyper.h

@@ -949,6 +949,7 @@ void applymodel(hyperpoint H, hyperpoint& Hscr);
 void drawCircle(int x, int y, int size, color_t color, color_t fillcolor = 0);
 void fixcolor(int& col);
 ld displayspin(cell *c, int d);
+bool non_spatial_model();
 hyperpoint gethyper(ld x, ld y);
 void resetview(); 
 void drawthemap();
@@ -1208,6 +1209,7 @@ struct renderbuffer;
 
 namespace rug {
   extern bool rugged;
+  extern bool spatial_rug;
   extern bool computed;
   extern bool renderonce;
   extern bool rendernogl;
@@ -2019,6 +2021,7 @@ bool playerInBoat(int i);
 extern int lowfar;
 extern bool wmspatial, wmescher, wmplain, wmblack, wmascii;
 extern bool mmspatial, mmhigh, mmmon, mmitem;
+extern bool spatial_graphics;
 extern int maxreclevel, reclevel;
 
 string explain3D(ld *param);

hypgraph.cpp

@@ -24,6 +24,14 @@ hyperpoint perspective_to_space(hyperpoint h, ld alpha = vid.alpha, eGeometryCla
 
 hyperpoint dhp(ld x, ld y, ld z) { return hpxyz(x, y, z); }
 
+bool non_spatial_model() {
+  if(among(pmodel, mdRotatedHyperboles, mdJoukowsky, mdJoukowskyInverted, mdPolygonal, mdPolynomial))
+    return true;
+  if(pmodel == mdSpiral && euclid)
+    return true;
+  return vid.consider_shader_projection && shaderside_projection && pmodel;  
+  }
+
 hyperpoint perspective_to_space(hyperpoint h, ld alpha, eGeometryClass gc) {
   ld hx = h[0], hy = h[1];
   
@@ -136,7 +144,7 @@ bool twopoint_do_flips;
 
 ld find_zlev(hyperpoint& H) {
 
-  if(wmspatial || mmspatial) {
+  if(spatial_graphics) {
     ld zlev = zlevel(H);
     using namespace hyperpoint_vec;
     if(zlev > 1-1e-6 && zlev < 1+1e-6) return 1;

rug.cpp

@@ -28,6 +28,7 @@ struct rug_exception { };
 bool fast_euclidean = true;
 bool good_shape;
 bool subdivide_first = false;
+bool spatial_rug = false;
 
 bool subdivide_further();
 void subdivide();
@@ -1791,6 +1792,8 @@ void show() {
     }
   dialog::addSelItem(XLAT("automatic move speed"), fts(ruggo), 'G');
   dialog::addSelItem(XLAT("anti-crossing"), fts(anticusp_factor), 'A');
+  dialog::addBoolItem(XLAT("3D monsters/walls on the surface"), spatial_rug, 'S');
+  dialog::add_action([] () { spatial_rug = !spatial_rug; });
 
 #if CAP_SURFACE  
   if(hyperbolic) {

tour.cpp

@@ -412,19 +412,10 @@ slide default_slides[] = {
 #endif
     [] (presmode mode) {
 #if CAP_RUG
-      static int wm, mm;
+      if(mode == 1)
-      if(mode == 1) {
         rug::init();
-        wm = vid.wallmode;
+      if(mode == 3) 
-        mm = vid.monmode;
-        vid.wallmode = 3;
-        vid.monmode = 2;
-        }
-      if(mode == 3) {
         rug::close();
-        vid.wallmode = wm;
-        vid.monmode = mm;
-        }
       slidecommand = "switch renderer";
       if(mode == 4) {
         rug::close();