From d4b977521ea85ba1d4a7e876aa73d072945c287d Mon Sep 17 00:00:00 2001
From: DeaDDooMER <deaddoomer@deadsoftware.ru>
Date: Thu, 12 Mar 2020 00:30:03 +0300
Subject: [PATCH] fix segfault on 64bit systems

---
 src/miscc.c |  4 ++--
 src/vga.c   | 35 +++++++++++++++--------------------
 src/view.c  |  6 +++---
 3 files changed, 20 insertions(+), 25 deletions(-)

diff --git a/src/miscc.c b/src/miscc.c
index b705817..3479689 100644
--- a/src/miscc.c
+++ b/src/miscc.c
@@ -597,7 +597,7 @@ int Z_moveobj(obj_t *p) {
 void Z_splash(obj_t *p,int n) {
   Z_sound(bulsnd[0],128);
   DOT_water(p->x,p->y-p->h/2,p->xv+p->vx,p->yv+p->vy,n,
-	(int)walp[wfront]-1);
+	(intptr_t)walp[wfront]-1);
 }
 
 void Z_calc_time(dword t,word *h,word *m,word *s)
@@ -652,4 +652,4 @@ int32_t int2host (int32_t x) {
 #else
   return x;
 #endif
-}
\ No newline at end of file
+}
diff --git a/src/vga.c b/src/vga.c
index f2e5b44..3b4e065 100644
--- a/src/vga.c
+++ b/src/vga.c
@@ -321,31 +321,26 @@ void V_remap_rect(int x,int y,int w,int h,byte *cmap)
 extern void *walp[256];
 extern byte clrmap[256*12];
 
-void Z_drawfld(byte *fld, int bg)
+void Z_drawfld (byte *fld, int bg)
 {
     byte *p = fld;
-    int x,y;
-    for (y=0; y<FLDH; y++)
-    {
-        for (x=0; x<FLDW; x++)
-        {
-            int sx = x*CELW-w_x+WD/2;
-            int sy = y*CELH-w_y+HT/2+1+w_o;
-
-
+    int x, y;
+    for (y = 0; y < FLDH; y++) {
+        for (x = 0; x < FLDW; x++) {
+            int sx = x * CELW - w_x + WD / 2;
+            int sy = y * CELH - w_y + HT / 2 + 1 + w_o;
             if (*p) {
-                 vgaimg *pic = walp[*p];
-                if ((int)pic <= 3) {
-                    if (!bg) {
-                        byte *cmap = clrmap + ((int)pic+7)*256;
-                        V_remap_rect(sx, sy, CELW, CELH, cmap);
-                    }
-                }
-                else {
-                    V_pic(sx, sy, pic);
+              vgaimg *pic = walp[*p];
+              // special pointer value setted for _WATER_* in view.c
+              if ((intptr_t)pic <= 3) {
+                if (!bg) {
+                  byte *cmap = clrmap + ((intptr_t)pic+7)*256;
+                  V_remap_rect(sx, sy, CELW, CELH, cmap);
                 }
+              } else {
+                V_pic(sx, sy, pic);
+              }
             }
-
             p++;
         }
     }
diff --git a/src/view.c b/src/view.c
index 51e8179..692066e 100644
--- a/src/view.c
+++ b/src/view.c
@@ -81,7 +81,7 @@ static void getname (int n, char *s) {
     memset(s, 0, 8);
   } else if (walh[n] == -2) {
     memcpy(s, "_WATER_", 8);
-    s[7] = (char)walp[n] - 1 + '0';
+    s[7] = (char)((intptr_t)walp[n] - 1 + '0');
   } else {
     F_getresname(s, walh[n] & 0x7FFF);
   }
@@ -128,7 +128,7 @@ void W_loadgame(FILE* h) {
       walani[i] = getani(s);
       if (strncasecmp(s, "_WATER_", 7) == 0) {
         walh[i] = -2;
-        walp[i] = (void*)(s[7] - '0' + 1);
+        walp[i] = (void*)((intptr_t)s[7] - '0' + 1);
       } else {
         walh[i] = F_getresid(s);
         walp[i] = V_getvgaimg(walh[i]);
@@ -292,7 +292,7 @@ int W_load (FILE *h) {
       myfread(w.n, 8, 1, h);
       w.t = myfread8(h);
       if (strncasecmp(w.n, "_WATER_", 7) == 0) {
-        walp[i] = (void*)(w.n[7] - '0' + 1);
+        walp[i] = (void*)((intptr_t)w.n[7] - '0' + 1);
         walh[i] = -2;
       } else {
         walh[i] = F_getresid(w.n);
-- 
2.29.2