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-rw-r--r--src/doom/.gitignore2
-rw-r--r--src/doom/g_game.c14
-rw-r--r--src/doom/hu_stuff.c30
-rw-r--r--src/doom/p_map.c21
-rw-r--r--src/doom/p_setup.c27
-rw-r--r--src/doom/p_sight.c10
-rw-r--r--src/doom/st_stuff.c18
7 files changed, 93 insertions, 29 deletions
diff --git a/src/doom/.gitignore b/src/doom/.gitignore
index d7e732ad..973a0073 100644
--- a/src/doom/.gitignore
+++ b/src/doom/.gitignore
@@ -5,3 +5,5 @@ Makefile.in
chocolate-doom
chocolate-server
*.exe
+tags
+TAGS
diff --git a/src/doom/g_game.c b/src/doom/g_game.c
index 35bf4d74..8d0e4503 100644
--- a/src/doom/g_game.c
+++ b/src/doom/g_game.c
@@ -588,10 +588,20 @@ void G_BuildTiccmd (ticcmd_t* cmd)
if (lowres_turn)
{
- // round angleturn to the nearest 256 boundary
+ static signed short carry = 0;
+ signed short desired_angleturn;
+
+ desired_angleturn = cmd->angleturn + carry;
+
+ // round angleturn to the nearest 256 unit boundary
// for recording demos with single byte values for turn
- cmd->angleturn = (cmd->angleturn + 128) & 0xff00;
+ cmd->angleturn = (desired_angleturn + 128) & 0xff00;
+
+ // Carry forward the error from the reduced resolution to the
+ // next tic, so that successive small movements can accumulate.
+
+ carry = desired_angleturn - cmd->angleturn;
}
}
diff --git a/src/doom/hu_stuff.c b/src/doom/hu_stuff.c
index a106978e..ca74ce92 100644
--- a/src/doom/hu_stuff.c
+++ b/src/doom/hu_stuff.c
@@ -52,9 +52,9 @@
// Locally used constants, shortcuts.
//
#define HU_TITLE (mapnames[(gameepisode-1)*9+gamemap-1])
-#define HU_TITLE2 (mapnames2[gamemap-1])
-#define HU_TITLEP (mapnamesp[gamemap-1])
-#define HU_TITLET (mapnamest[gamemap-1])
+#define HU_TITLE2 (mapnames_commercial[gamemap-1])
+#define HU_TITLEP (mapnames_commercial[gamemap-1 + 32])
+#define HU_TITLET (mapnames_commercial[gamemap-1 + 64])
#define HU_TITLE_CHEX (mapnames[gamemap - 1])
#define HU_TITLEHEIGHT 1
#define HU_TITLEX 0
@@ -171,8 +171,16 @@ char* mapnames[] = // DOOM shareware/registered/retail (Ultimate) names.
"NEWLEVEL"
};
-char* mapnames2[] = // DOOM 2 map names.
+// List of names for levels in commercial IWADs
+// (doom2.wad, plutonia.wad, tnt.wad). These are stored in a
+// single large array; WADs like pl2.wad have a MAP33, and rely on
+// the layout in the Vanilla executable, where it is possible to
+// overflow the end of one array into the next.
+
+char *mapnames_commercial[] =
{
+ // DOOM 2 map names.
+
HUSTR_1,
HUSTR_2,
HUSTR_3,
@@ -206,12 +214,10 @@ char* mapnames2[] = // DOOM 2 map names.
HUSTR_29,
HUSTR_30,
HUSTR_31,
- HUSTR_32
-};
+ HUSTR_32,
+ // Plutonia WAD map names.
-char* mapnamesp[] = // Plutonia WAD map names.
-{
PHUSTR_1,
PHUSTR_2,
PHUSTR_3,
@@ -245,12 +251,10 @@ char* mapnamesp[] = // Plutonia WAD map names.
PHUSTR_29,
PHUSTR_30,
PHUSTR_31,
- PHUSTR_32
-};
-
+ PHUSTR_32,
+
+ // TNT WAD map names.
-char *mapnamest[] = // TNT WAD map names.
-{
THUSTR_1,
THUSTR_2,
THUSTR_3,
diff --git a/src/doom/p_map.c b/src/doom/p_map.c
index 3f88aabc..925e4398 100644
--- a/src/doom/p_map.c
+++ b/src/doom/p_map.c
@@ -885,7 +885,17 @@ PTR_AimTraverse (intercept_t* in)
dist = FixedMul (attackrange, in->frac);
- if (li->frontsector->floorheight != li->backsector->floorheight)
+ // Return false if there is no back sector. This should never
+ // be the case if the line is two-sided; however, some WADs
+ // (eg. ottawau.wad) use this as an "impassible glass" trick
+ // and rely on Vanilla Doom's (unintentional) support for this.
+
+ if (li->backsector == NULL)
+ {
+ return false;
+ }
+
+ if (li->frontsector->floorheight != li->backsector->floorheight)
{
slope = FixedDiv (openbottom - shootz , dist);
if (slope > bottomslope)
@@ -973,7 +983,14 @@ boolean PTR_ShootTraverse (intercept_t* in)
dist = FixedMul (attackrange, in->frac);
- if (li->frontsector->floorheight != li->backsector->floorheight)
+ // Check if backsector is NULL. See comment in PTR_AimTraverse.
+
+ if (li->backsector == NULL)
+ {
+ goto hitline;
+ }
+
+ if (li->frontsector->floorheight != li->backsector->floorheight)
{
slope = FixedDiv (openbottom - shootz , dist);
if (slope > aimslope)
diff --git a/src/doom/p_setup.c b/src/doom/p_setup.c
index 5cf7a628..2a3a8f85 100644
--- a/src/doom/p_setup.c
+++ b/src/doom/p_setup.c
@@ -167,6 +167,7 @@ void P_LoadSegs (int lump)
line_t* ldef;
int linedef;
int side;
+ int sidenum;
numsegs = W_LumpLength (lump) / sizeof(mapseg_t);
segs = Z_Malloc (numsegs*sizeof(seg_t),PU_LEVEL,0);
@@ -179,7 +180,7 @@ void P_LoadSegs (int lump)
{
li->v1 = &vertexes[SHORT(ml->v1)];
li->v2 = &vertexes[SHORT(ml->v2)];
-
+
li->angle = (SHORT(ml->angle))<<16;
li->offset = (SHORT(ml->offset))<<16;
linedef = SHORT(ml->linedef);
@@ -188,10 +189,28 @@ void P_LoadSegs (int lump)
side = SHORT(ml->side);
li->sidedef = &sides[ldef->sidenum[side]];
li->frontsector = sides[ldef->sidenum[side]].sector;
- if (ldef-> flags & ML_TWOSIDED)
- li->backsector = sides[ldef->sidenum[side^1]].sector;
- else
+
+ if (ldef-> flags & ML_TWOSIDED)
+ {
+ sidenum = ldef->sidenum[side ^ 1];
+
+ // If the sidenum is out of range, this may be a "glass hack"
+ // impassible window. Point at side #0 (this may not be
+ // the correct Vanilla behavior; however, it seems to work for
+ // OTTAWAU.WAD, which is the one place I've seen this trick
+ // used).
+
+ if (sidenum < 0 || sidenum >= numsides)
+ {
+ sidenum = 0;
+ }
+
+ li->backsector = sides[sidenum].sector;
+ }
+ else
+ {
li->backsector = 0;
+ }
}
W_ReleaseLumpNum(lump);
diff --git a/src/doom/p_sight.c b/src/doom/p_sight.c
index e192567b..79c1bb1d 100644
--- a/src/doom/p_sight.c
+++ b/src/doom/p_sight.c
@@ -173,7 +173,7 @@ boolean P_CrossSubsector (int num)
continue;
line->validcount = validcount;
-
+
v1 = line->v1;
v2 = line->v2;
s1 = P_DivlineSide (v1->x,v1->y, &strace);
@@ -194,6 +194,14 @@ boolean P_CrossSubsector (int num)
if (s1 == s2)
continue;
+ // Backsector may be NULL if this is an "impassible
+ // glass" hack line.
+
+ if (line->backsector == NULL)
+ {
+ return false;
+ }
+
// stop because it is not two sided anyway
// might do this after updating validcount?
if ( !(line->flags & ML_TWOSIDED) )
diff --git a/src/doom/st_stuff.c b/src/doom/st_stuff.c
index e6ef0828..160244ce 100644
--- a/src/doom/st_stuff.c
+++ b/src/doom/st_stuff.c
@@ -260,9 +260,6 @@
// Height, in lines.
#define ST_OUTHEIGHT 1
-#define ST_MAPWIDTH \
- (strlen(mapnames[(gameepisode-1)*9+(gamemap-1)]))
-
#define ST_MAPTITLEX \
(SCREENWIDTH - ST_MAPWIDTH * ST_CHATFONTWIDTH)
@@ -418,10 +415,6 @@ cheatseq_t cheat_clev = CHEAT("idclev", 2);
cheatseq_t cheat_mypos = CHEAT("idmypos", 0);
-//
-extern char* mapnames[];
-
-
//
// STATUS BAR CODE
//
@@ -985,6 +978,17 @@ void ST_doPaletteStuff(void)
else
palette = 0;
+ // In Chex Quest, the player never sees red. Instead, the
+ // radiation suit palette is used to tint the screen green,
+ // as though the player is being covered in goo by an
+ // attacking flemoid.
+
+ if (gameversion == exe_chex
+ && palette >= STARTREDPALS && palette < STARTREDPALS + NUMREDPALS)
+ {
+ palette = RADIATIONPAL;
+ }
+
if (palette != st_palette)
{
st_palette = palette;
generated by cgit v1.2.3 (git 2.25.1) at 2024-06-29 07:10:39 +0000