From 1657d90ca95d6dc2447b9e75a145697701f5a83b Mon Sep 17 00:00:00 2001
From: Christoph Oelckers <coelckers@users.noreply.github.com>
Date: Sat, 4 Jul 2020 23:40:54 +0200
Subject: [PATCH] - ror.cpp

---
 source/games/duke/src/ror.cpp | 219 ++++++++++++++++++++++++++++++++++
 1 file changed, 219 insertions(+)
 create mode 100644 source/games/duke/src/ror.cpp

diff --git a/source/games/duke/src/ror.cpp b/source/games/duke/src/ror.cpp
new file mode 100644
index 000000000..8743c5d20
--- /dev/null
+++ b/source/games/duke/src/ror.cpp
@@ -0,0 +1,219 @@
+//-------------------------------------------------------------------------
+/*
+Copyright (C) 1996, 2003 - 3D Realms Entertainment
+
+This file is part of Duke Nukem 3D version 1.5 - Atomic Edition
+
+Duke Nukem 3D is free software; you can redistribute it and/or
+modify it under the terms of the GNU General Public License
+as published by the Free Software Foundation; either version 2
+of the License, or (at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+
+See the GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program; if not, write to the Free Software
+Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
+
+Original Source: 1996 - Todd Replogle
+Prepared for public release: 03/21/2003 - Charlie Wiederhold, 3D Realms
+Modifications for JonoF's port by Jonathon Fowler (jf@jonof.id.au)
+*/
+//-------------------------------------------------------------------------
+
+#include "ns.h"
+#include "duke3d.h"
+
+
+BEGIN_DUKE_NS
+
+//---------------------------------------------------------------------------
+//
+// Floor Over Floor
+
+// If standing in sector with SE42
+// then draw viewing to SE41 and raise all =hi SE43 cielings.
+
+// If standing in sector with SE43
+// then draw viewing to SE40 and lower all =hi SE42 floors.
+
+// If standing in sector with SE44
+// then draw viewing to SE40.
+
+// If standing in sector with SE45
+// then draw viewing to SE41.
+//
+//---------------------------------------------------------------------------
+
+#define FOFTILE 13
+#define FOFTILEX 32
+#define FOFTILEY 32
+static int tempsectorz[MAXSECTORS];
+static int tempsectorpicnum[MAXSECTORS];
+//short tempcursectnum;
+
+void SE40_Draw(int spnum, int x, int y, int z, int a, int h, int smoothratio)
+{
+    int i = 0, j = 0, k = 0;
+    int floor1 = 0, floor2 = 0, ok = 0, fofmode = 0;
+    int offx, offy;
+
+    if (sprite[spnum].ang != 512) return;
+
+    i = FOFTILE;    //Effect TILE
+    if (!(gotpic[i >> 3] & (1 << (i & 7)))) return;
+    gotpic[i >> 3] &= ~(1 << (i & 7));
+
+    floor1 = spnum;
+
+    if (sprite[spnum].lotag == 42) fofmode = 40;
+    if (sprite[spnum].lotag == 43) fofmode = 41;
+    if (sprite[spnum].lotag == 44) fofmode = 40;
+    if (sprite[spnum].lotag == 45) fofmode = 41;
+
+    // fofmode=sprite[spnum].lotag-2;
+
+    // sectnum=sprite[j].sectnum;
+    // sectnum=cursectnum;
+    ok++;
+
+    /*  recursive?
+     for(j=0;j<MAXSPRITES;j++)
+     {
+      if(
+         sprite[j].sectnum==sectnum &&
+         sprite[j].picnum==1 &&
+         sprite[j].lotag==110
+        ) { DrawFloorOverFloor(j); break;}
+     }
+    */
+
+    // if(ok==0) { Message("no fof",RED); return; }
+
+    for (j = 0; j < MAXSPRITES; j++)
+    {
+        if (
+            sprite[j].picnum == 1 &&
+            sprite[j].lotag == fofmode &&
+            sprite[j].hitag == sprite[floor1].hitag
+            ) {
+            floor1 = j; fofmode = sprite[j].lotag; ok++; break;
+        }
+    }
+    // if(ok==1) { Message("no floor1",RED); return; }
+
+    if (fofmode == 40) k = 41; else k = 40;
+
+    for (j = 0; j < MAXSPRITES; j++)
+    {
+        if (
+            sprite[j].picnum == 1 &&
+            sprite[j].lotag == k &&
+            sprite[j].hitag == sprite[floor1].hitag
+            ) {
+            floor2 = j; ok++; break;
+        }
+    }
+
+    // if(ok==2) { Message("no floor2",RED); return; }
+
+    for (j = 0; j < MAXSPRITES; j++)  // raise ceiling or floor
+    {
+        if (sprite[j].picnum == 1 &&
+            sprite[j].lotag == k + 2 &&
+            sprite[j].hitag == sprite[floor1].hitag
+            )
+        {
+            if (k == 40)
+            {
+                tempsectorz[sprite[j].sectnum] = sector[sprite[j].sectnum].floorz;
+                sector[sprite[j].sectnum].floorz += (((z - sector[sprite[j].sectnum].floorz) / 32768) + 1) * 32768;
+                tempsectorpicnum[sprite[j].sectnum] = sector[sprite[j].sectnum].floorpicnum;
+                sector[sprite[j].sectnum].floorpicnum = 13;
+            }
+            if (k == 41)
+            {
+                tempsectorz[sprite[j].sectnum] = sector[sprite[j].sectnum].ceilingz;
+                sector[sprite[j].sectnum].ceilingz += (((z - sector[sprite[j].sectnum].ceilingz) / 32768) - 1) * 32768;
+                tempsectorpicnum[sprite[j].sectnum] = sector[sprite[j].sectnum].ceilingpicnum;
+                sector[sprite[j].sectnum].ceilingpicnum = 13;
+            }
+        }
+    }
+
+    i = floor1;
+    offx = x - sprite[i].x;
+    offy = y - sprite[i].y;
+    i = floor2;
+#if 0
+    drawrooms(offx + sprite[i].x, offy + sprite[i].y, z, a, h, sprite[i].sectnum);
+#else
+    renderDrawRoomsQ16(sprite[i].x + x, sprite[i].y + y, z, a, h, sprite[i].sectnum);
+
+    //drawing_ror = 1 + level;
+    //if (drawing_ror == 2) G_OROR_DupeSprites(sp);
+#endif
+
+    fi.animatesprites(x, y, fix16_to_int(a), smoothratio);
+    renderDrawMasks();
+
+    for (j = 0; j < MAXSPRITES; j++)  // restore ceiling or floor
+    {
+        if (sprite[j].picnum == 1 &&
+            sprite[j].lotag == k + 2 &&
+            sprite[j].hitag == sprite[floor1].hitag
+            )
+        {
+            if (k == 40)
+            {
+                sector[sprite[j].sectnum].floorz = tempsectorz[sprite[j].sectnum];
+                sector[sprite[j].sectnum].floorpicnum = tempsectorpicnum[sprite[j].sectnum];
+            }
+            if (k == 41)
+            {
+                sector[sprite[j].sectnum].ceilingz = tempsectorz[sprite[j].sectnum];
+                sector[sprite[j].sectnum].ceilingpicnum = tempsectorpicnum[sprite[j].sectnum];
+            }
+        }// end if
+    }// end for
+
+} // end SE40
+
+
+//---------------------------------------------------------------------------
+//
+//
+//
+//---------------------------------------------------------------------------
+
+void se40code(int x, int y, int z, int a, int h, int smoothratio)
+{
+    int i;
+
+    i = headspritestat[STAT_RAROR];
+    while (i >= 0)
+    {
+        switch (sprite[i].lotag)
+        {
+            //            case 40:
+            //            case 41:
+            //                SE40_Draw(i,x,y,a,smoothratio);
+            //                break;
+        case 42:
+        case 43:
+        case 44:
+        case 45:
+            if (ps[screenpeek].cursectnum == sprite[i].sectnum)
+                SE40_Draw(i, x, y, z, a, h, smoothratio);
+            break;
+        }
+        i = nextspritestat[i];
+    }
+}
+
+
+END_DUKE_NS