Duke3D: Process one_eighty_count (Turn-around key) at frame-rate.

source/duke3d/src/actors.cpp

@@ -1304,23 +1304,6 @@ static int P_Submerge(int, DukePlayer_t *, int, int);
 static int P_Emerge(int, DukePlayer_t *, int, int);
 static void P_FinishWaterChange(int, DukePlayer_t *, int, int, int);
 
-static fix16_t P_GetQ16AngleDeltaForTic(DukePlayer_t const *pPlayer)
-{
-    auto oldAngle = pPlayer->oq16ang;
-    auto newAngle = pPlayer->q16ang;
-
-    if (klabs(fix16_sub(oldAngle, newAngle)) < F16(1024))
-        return fix16_sub(newAngle, oldAngle);
-
-    if (newAngle > F16(1024))
-        newAngle = fix16_sub(newAngle, F16(2048));
-
-    if (oldAngle > F16(1024))
-        oldAngle = fix16_sub(oldAngle, F16(2048));
-
-    return fix16_sub(newAngle, oldAngle);
-}
-
 ACTOR_STATIC void G_MovePlayers(void)
 {
     int spriteNum = headspritestat[STAT_PLAYER];
@@ -1374,7 +1357,7 @@ ACTOR_STATIC void G_MovePlayers(void)
                 if (G_TileHasActor(sprite[spriteNum].picnum))
                     A_Execute(spriteNum, P_GetP(pSprite), otherPlayerDist);
 
-                pPlayer->q16angvel    = P_GetQ16AngleDeltaForTic(pPlayer);
+                pPlayer->q16angvel    = G_GetQ16AngleDelta(pPlayer->oq16ang, pPlayer->q16ang);
                 pPlayer->oq16ang      = pPlayer->q16ang;
                 pPlayer->oq16horiz    = pPlayer->q16horiz;
                 pPlayer->oq16horizoff = pPlayer->q16horizoff;

source/duke3d/src/gameexec.cpp

@@ -513,6 +513,20 @@ int __fastcall G_GetAngleDelta(int currAngle, int newAngle)
     return newAngle-currAngle;
 }
 
+fix16_t __fastcall G_GetQ16AngleDelta(fix16_t oldAngle, fix16_t newAngle)
+{
+    if (fix16_abs(fix16_sub(oldAngle, newAngle)) < fix16_from_int(1024))
+        return fix16_sub(newAngle, oldAngle);
+
+    if (newAngle > fix16_from_int(1024))
+        newAngle = fix16_sub(newAngle, fix16_from_int(2048));
+
+    if (oldAngle > fix16_from_int(1024))
+        oldAngle = fix16_sub(oldAngle, fix16_from_int(2048));
+
+    return fix16_sub(newAngle, oldAngle);
+}
+
 GAMEEXEC_STATIC void VM_AlterAng(int32_t const moveFlags)
 {
     int const elapsedTics = (AC_COUNT(vm.pData))&31;

source/duke3d/src/gameexec.h

@@ -86,6 +86,7 @@ void A_Fall(int spriteNum);
 int A_GetFurthestAngle(int const spriteNum, int const angDiv);
 void A_GetZLimits(int spriteNum);
 int __fastcall G_GetAngleDelta(int currAngle, int newAngle);
+fix16_t __fastcall G_GetQ16AngleDelta(fix16_t oldAngle, fix16_t newAngle);
 void G_RestoreMapState();
 void G_SaveMapState();
 

source/duke3d/src/player.cpp

@@ -26,6 +26,7 @@ Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
 #endif
 
 #include "duke3d.h"
+#include "gameexec.h"
 #include "demo.h"
 //#include "sjson.h"
 #include "gamecvars.h"
@@ -3021,14 +3022,15 @@ enddisplayweapon:
     P_DisplaySpit();
 }
 
-#define TURBOTURNTIME (TICRATE/8) // 7
+#define TURBOTURNTIME  (TICRATE/8) // 7
-#define NORMALTURN    15
+#define NORMALTURN     15
-#define PREAMBLETURN  5
+#define PREAMBLETURN   5
-#define NORMALKEYMOVE 40
+#define NORMALKEYMOVE  40
-#define MAXVEL        ((NORMALKEYMOVE*2)+10)
+#define MAXVEL         ((NORMALKEYMOVE*2)+10)
-#define MAXSVEL       ((NORMALKEYMOVE*2)+10)
+#define MAXSVEL        ((NORMALKEYMOVE*2)+10)
-#define MAXANGVEL     1024
+#define MAXANGVEL      1024
-#define MAXHORIZVEL   256
+#define MAXHORIZVEL    256
+#define ONEEIGHTYSCALE 4
 
 int32_t mouseyaxismode = -1;
 
@@ -3352,6 +3354,12 @@ void P_GetInput(int const playerNum)
             pPlayer->q16look_ang = fix16_sadd(pPlayer->q16look_ang, fix16_from_dbl(scaleAdjustmentToInterval(152)));
             pPlayer->q16rotscrnang = fix16_ssub(pPlayer->q16rotscrnang, fix16_from_dbl(scaleAdjustmentToInterval(24)));
         }
+
+        if (pPlayer->one_eighty_count < 0)
+        {
+            pPlayer->one_eighty_count = -fix16_to_int(fix16_abs(G_GetQ16AngleDelta(pPlayer->one_eighty_target, pPlayer->q16ang)));
+            pPlayer->q16ang = fix16_sadd(pPlayer->q16ang, fix16_max(fix16_one, fix16_from_dbl(scaleAdjustmentToInterval(-pPlayer->one_eighty_count / ONEEIGHTYSCALE)))) & 0x7FFFFFF;
+        }
     }
 
     // A horiz diff of 128 equal 45 degrees, so we convert horiz to 1024 angle units
@@ -5202,12 +5210,6 @@ void P_ProcessInput(int playerNum)
 
     if (!ud.noclip)
         pushmove(&pPlayer->pos, &pPlayer->cursectnum, pPlayer->clipdist - 1, (4L<<8), stepHeight, CLIPMASK0);
-
-    if (pPlayer->one_eighty_count < 0)
-    {
-        pPlayer->one_eighty_count += 128;
-        pPlayer->q16ang += F16(128);
-    }
     
     // Shrinking code
 

source/duke3d/src/player.h

@@ -176,6 +176,7 @@ typedef struct {
     int16_t random_club_frame, one_eighty_count;
     int16_t dummyplayersprite, extra_extra8;
     int16_t actorsqu, timebeforeexit, customexitsound, last_pissed_time;
+    fix16_t one_eighty_target;
 
     int16_t weaprecs[MAX_WEAPONS], weapon_sway, crack_time, bobcounter;
 

source/duke3d/src/sector.cpp

@@ -3147,7 +3147,10 @@ CHECKINV1:
 
         if (TEST_SYNC_KEY(playerBits, SK_TURNAROUND) && pPlayer->one_eighty_count == 0)
             if (VM_OnEvent(EVENT_TURNAROUND,pPlayer->i,playerNum) == 0)
-                pPlayer->one_eighty_count = -1024;
+            {
+                pPlayer->one_eighty_count  = -1024;
+                pPlayer->one_eighty_target = fix16_sadd(pPlayer->q16ang, -fix16_from_int(pPlayer->one_eighty_count)) & 0x7FFFFFF;
+            }
     }
 }