From 3cefb1d4e52deba10262e7412a1727a0427cd6e8 Mon Sep 17 00:00:00 2001
From: Maxime Morel <maxime@mmorel.eu>
Date: Fri, 23 Oct 2026 10:11:40 +0200
Subject: [PATCH] Look ahead

---
 port/src/input.c     | 10 ++++++++++
 src/game/bondview2.c | 46 ++++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 56 insertions(+)

diff --git a/port/src/input.c b/port/src/input.c
index 5fc60b3b..b85afccf 100644
--- a/port/src/input.c
+++ b/port/src/input.c
@@ -507,6 +507,13 @@ static int controlScheme = 0;                    /* D513 Input.ControlScheme: 0
  * the live control (the game honours it in bondview2's stick-pitch path),
  * so it must stay user-settable there. */
 int inputControlScheme(void) { return controlScheme; }
+
+/* Look ahead (Modern scheme): set when the right stick or mouse pitched the
+ * view, the equivalent of the N64's C-up/C-down while walking; the game thread
+ * consumes it once per tick (portLookAheadManualPitch). */
+static SDL_atomic_t s_manualPitch;
+static void noteManualPitch(void) { SDL_AtomicSet(&s_manualPitch, 1); }
+int portLookAheadManualPitch(void) { return SDL_AtomicSet(&s_manualPitch, 0); }
 /* D645: Original scheme -- F10 "Invert look" mirrors the game's own
  * "Look up/down" (watchsettings.c keeps the two in sync both ways). */
 static int padLookInvertY = 0;                   /* Input.PadLookInvertY: 1 = invert the look stick's Y (right stick in SOLITARE roles, left stick in HONEY roles -- #145) */
@@ -2673,6 +2680,8 @@ static unsigned inputComputePadSlot(int idx, signed char *stick_x, signed char *
             double dyLook = edy * invert;   /* >0 => look down */
             if (!menuMode && (fabs(edx) > 0.01 || fabs(dyLook) > 0.01))
                 s_aimDevMouse = 1;          /* D337: mouse is the active aim device */
+            if (!menuMode && fabs(dyLook) > 0.01)
+                noteManualPitch();
 
             /* D194(b): gameplay-look-only dt normalization -- see the
              * MOUSE_DT_REF comment above. Computed unconditionally (so the
@@ -3007,6 +3016,7 @@ static unsigned inputComputePadSlot(int idx, signed char *stick_x, signed char *
                 rys = (int)lround(padSmSY[idx]);
             }
             if (padLookInvertY) rys = -rys;
+            if (rys) noteManualPitch();
             if (idx == 0) { s_recPadDX = rxs; s_recPadDY = rys; s_recPadDirect = 0; }
             if (aimModeGet() == AIMMODE_CENTRED && !(idx == 0 && s_replayActive) &&
                 padDirectCompute(rxs, rys)) {
diff --git a/src/game/bondview2.c b/src/game/bondview2.c
index c0a4e2f4..3b8d7774 100644
--- a/src/game/bondview2.c
+++ b/src/game/bondview2.c
@@ -5939,6 +5939,52 @@ void bondviewProcessInput(s8 stick_x, s8 stick_y, u16 buttons, u16 oldbuttons)
             }
         }
 
+#ifdef PORT
+        /* Look ahead in the Modern scheme. The port runs the stick-look style
+         * (1.2/1.4: left stick walks through digital C-steps, right stick or
+         * mouse pitches the view), where the N64 turns look ahead off and its
+         * trigger (analog walk past 60) never fires anyway. Enable it there,
+         * let walking forward/back stand in for the analog walk, and make a
+         * manual pitch release the centring until the walk stops, like
+         * C-up/C-down while walking with the 1.1 analog stick. */
+        {
+            extern int inputControlScheme(void);
+            extern int portLookAheadManualPitch(void);
+            s32 manualpitch = portLookAheadManualPitch();
+
+            if (inputControlScheme() == 0)
+            {
+                const s32 type = cur_player_get_control_type();
+
+                /* Stick-look styles: the stick channel is the look, not a walk */
+                if ((type == CONTROLLER_CONFIG_SOLITARE) || (type == CONTROLLER_CONFIG_GOODNIGHT))
+                {
+                    moveData.canLookAhead = !g_CurrentPlayer->insightaimmode;
+                    moveData.disableLookAhead = 0;
+
+                    /* The look stick in N64 aim mode reaches the game as natural pitch */
+                    if (moveData.canNaturalPitch && (moveData.analogPitch != 0))
+                    {
+                        manualpitch = TRUE;
+                    }
+                    moveData.analogWalk = moveData.digitalStepForward ? 70 : (moveData.digitalStepBack ? -70 : 0);
+                }
+
+                /* As the N64 does for C-up/C-down (speedVertaDown/Up below) */
+                if (manualpitch)
+                {
+                    g_CurrentPlayer->docentreupdown = FALSE;
+                    g_CurrentPlayer->automovecentre = FALSE;
+
+                    if (moveData.canLookAhead && ((moveData.analogWalk > 60) || (moveData.analogWalk < -60)))
+                    {
+                        g_CurrentPlayer->movecentrerelease = TRUE;
+                    }
+                }
+            }
+        }
+#endif
+
         if ((g_CurrentPlayer->movecentrerelease) && (moveData.analogWalk < 40) && (moveData.analogWalk > -40))
         {
             g_CurrentPlayer->movecentrerelease = FALSE;