Let's try and not mix parts in a solid.

3 files changed, 27 insertions, 19 deletions

diff --git a/src/simulation/Simulation.cpp b/src/simulation/Simulation.cpp
index f0bd48c..197e01f 100644
--- a/src/simulation/Simulation.cpp
+++ b/src/simulation/Simulation.cpp
@@ -4788,29 +4788,37 @@ int Simulation::GetParticleType(std::string type)
 void Simulation::solid_respawn(int i, int pp, int dx, int dy)
 {
     int nx = (int)(parts[pp].x + 0.5f), ny = (int)(parts[pp].y + 0.5f);
-    int nc, t, pq;
+    int nc, s, t, pq, pr, pt[4];
 
     if(pmap[ny+dy][nx+dx])
         return;
 
-    nc = 1;
-    t = pmap[ny+2*dy][nx+2*dx];   if(t && parts[t >> 8].sld == i+1) nc ++;
-    t = pmap[ny+dy+dx][nx+dx+dy]; if(t && parts[t >> 8].sld == i+1) nc ++;
-    t = pmap[ny+dy-dx][nx+dx-dy]; if(t && parts[t >> 8].sld == i+1) nc ++;
+    pt[0] = pp; nc = 1;
+    t = pmap[ny+2*dy][nx+2*dx];   if(t && parts[t >> 8].sld == i+1) { pt[nc] = t >> 8; nc ++; }
+    t = pmap[ny+dy+dx][nx+dx+dy]; if(t && parts[t >> 8].sld == i+1) { pt[nc] = t >> 8; nc ++; }
+    t = pmap[ny+dy-dx][nx+dx-dy]; if(t && parts[t >> 8].sld == i+1) { pt[nc] = t >> 8; nc ++; }
     if(nc < 3)
         return;
 
-    pq = create_part(-1, nx+dx, ny+dy, parts[pp].type);
+    pr = pt[0];
+    for(s=0; s<nc; s++)
+        for(t=s+1; t<nc; t++)
+            if(parts[pt[s]].type == parts[pt[t]].type) {
+                pr = pt[s];
+                break;
+            }
+
+    pq = create_part(-1, nx+dx, ny+dy, parts[pr].type);
     if(pq < 0)
         return;
 
-    parts[pq].life = parts[pp].life;
-    parts[pq].ctype = parts[pp].ctype;
-    parts[pq].flags = parts[pp].flags;
-    parts[pq].temp = parts[pp].temp;
-    parts[pq].tmp = parts[pp].tmp;
-    parts[pq].tmp2 = parts[pp].tmp2;
-    parts[pq].dcolour = parts[pp].dcolour;
+    parts[pq].life = parts[pr].life;
+    parts[pq].ctype = parts[pr].ctype;
+    parts[pq].flags = parts[pr].flags;
+    parts[pq].temp = parts[pr].temp;
+    parts[pq].tmp = parts[pr].tmp;
+    parts[pq].tmp2 = parts[pr].tmp2;
+    parts[pq].dcolour = parts[pr].dcolour;
     if(pmap[ny+2*dy][nx+2*dx]) {
         parts[pq].x = (parts[pp].x + parts[pmap[ny+2*dy][nx+2*dx] >> 8].x) * 0.5f;
         parts[pq].y = (parts[pp].y + parts[pmap[ny+2*dy][nx+2*dx] >> 8].y) * 0.5f;
@@ -4868,10 +4876,10 @@ void Simulation::update_solids()
                 nx = (int)(parts[pp].x + 0.5f);
                 ny = (int)(parts[pp].y + 0.5f);
                 if((pmap[ny][nx] >> 8) != pp) {
-                    if(!pmap[ny][nx-1] || parts[pmap[ny][nx-1] >> 8].sld != i+1) continue;
-                    if(!pmap[ny][nx+1] || parts[pmap[ny][nx+1] >> 8].sld != i+1) continue;
-                    if(!pmap[ny-1][nx] || parts[pmap[ny-1][nx] >> 8].sld != i+1) continue;
-                    if(!pmap[ny+1][nx] || parts[pmap[ny+1][nx] >> 8].sld != i+1) continue;
+                    if(!pmap[ny][nx-1] || parts[pmap[ny][nx-1] >> 8].sld != i+1 || parts[pmap[ny][nx-1] >> 8].type != parts[pp].type) continue;
+                    if(!pmap[ny][nx+1] || parts[pmap[ny][nx+1] >> 8].sld != i+1 || parts[pmap[ny][nx+1] >> 8].type != parts[pp].type) continue;
+                    if(!pmap[ny-1][nx] || parts[pmap[ny-1][nx] >> 8].sld != i+1 || parts[pmap[ny-1][nx] >> 8].type != parts[pp].type) continue;
+                    if(!pmap[ny+1][nx] || parts[pmap[ny+1][nx] >> 8].sld != i+1 || parts[pmap[ny+1][nx] >> 8].type != parts[pp].type) continue;
                     pq = pmap[ny][nx] >> 8;
                     if(fabs(parts[pq].vx) < fabs(parts[pp].vx))
                         parts[pq].vx = parts[pp].vx;
diff --git a/src/simulation/elements/DMND.cpp b/src/simulation/elements/DMND.cpp
index 9b86a84..9b49a1a 100644
--- a/src/simulation/elements/DMND.cpp
+++ b/src/simulation/elements/DMND.cpp
@@ -12,7 +12,7 @@ Element_DMND::Element_DMND()
 	Advection = 0.0f;
 	AirDrag = 0.00f * CFDS;
 	AirLoss = 0.90f;
-	Loss = 0.00f;
+	Loss = 1.00f;
 	Collision = 0.0f;
 	Gravity = 0.0f;
 	Diffusion = 0.00f;
diff --git a/src/simulation/elements/TTAN.cpp b/src/simulation/elements/TTAN.cpp
index b37ac61..7b4262d 100644
--- a/src/simulation/elements/TTAN.cpp
+++ b/src/simulation/elements/TTAN.cpp
@@ -11,7 +11,7 @@ Element_TTAN::Element_TTAN()
 	Enabled = 1;
 
 	Advection = 0.0f;
-	AirDrag = 0.02f * CFDS;
+	AirDrag = 0.00f * CFDS;
 	AirLoss = 0.90f;
 	Loss = 0.999f;
 	Collision = 0.0f;