map L_TRIG to alt button

- switches immediately when releases L
- or whenevever L+Z is pressed. Will switch back when L is released.

src/game/bondgun.c

@@ -11699,7 +11699,7 @@ s32 bgunConsiderToggleGunFunction(s32 usedowntime, bool trigpressed, bool fromac
 		}
 
 		// Don't do anything if B hasn't been held for 50/60ths of a second
-		if (usedowntime < TICKS(50)) {
+		if (ABS(usedowntime) < 0) {
 			return USETIMER_CONTINUE;
 		}
 

src/game/bondmove.c

@@ -1349,6 +1349,43 @@ void bmoveProcessInput(bool allowc1x, bool allowc1y, bool allowc1buttons, bool i
 						}
 					}
 
+
+					// handle L button
+					for (i = 0; i< numsamples; i++) {
+						if (joyGetButtonsOnSample(i, contpad1, c1allowedbuttons & L_TRIG)) {
+							if (g_Vars.currentplayer->altdowntime >= -1) {
+								if (joyGetButtonsPressedOnSample(i, contpad1, shootbuttons & c1allowedbuttons)
+										&& g_Vars.currentplayer->altdowntime >= 0
+										&& bgunConsiderToggleGunFunction(g_Vars.currentplayer->altdowntime, true, false) != USETIMER_CONTINUE) {
+									g_Vars.currentplayer->altdowntime = -3;
+								}
+
+								if (g_Vars.currentplayer->altdowntime != -4) {
+									if (g_Vars.currentplayer->altdowntime <= 0) {
+										g_Vars.currentplayer->altdowntime++;
+									}
+								}
+							} else  {
+								if (g_Vars.currentplayer->altdowntime == -2) {
+									bgunConsiderToggleGunFunction(g_Vars.currentplayer->altdowntime, false, false);
+									g_Vars.currentplayer->altdowntime = -4;
+								}
+							}
+						} else {
+							// Released L
+							if (g_Vars.currentplayer->altdowntime != 0) {
+								s32 result = bgunConsiderToggleGunFunction(g_Vars.currentplayer->altdowntime, (g_Vars.currentplayer->altdowntime == -3 ? true: false), false);
+
+								if (result == USETIMER_STOP) {
+									g_Vars.currentplayer->altdowntime = -1;
+								} else if (result == USETIMER_REPEAT) {
+									g_Vars.currentplayer->altdowntime = -2;
+								}
+							}
+							g_Vars.currentplayer->altdowntime = 0;
+						}
+					}
+
 					// Handle ALT1 / MI Reload Hack
 					for (i = 0; i < numsamples; i++) {
 						if (joyGetButtonsOnSample(i, contpad1, c1allowedbuttons & X_BUTTON)) {

src/game/player.c

@@ -806,6 +806,8 @@ void playerLoadDefaults(void)
 	g_Vars.currentplayer->prevoverexposurered = 0;
 	g_Vars.currentplayer->prevoverexposuregreen = 0;
 	g_Vars.currentplayer->prevoverexposureblue = 0;
+	g_Vars.currentplayer->amdowntime = 0;
+	g_Vars.currentplayer->altdowntime = 0;
 }
 
 bool playerSpawnAnti(struct chrdata *hostchr, bool force)

src/include/types.h

@@ -2816,6 +2816,7 @@ struct player {
 	/*0x1c64*/ s32 unk1c64;
 	/*0x1c68*/ u32 unk1c68;
 	/*0x1c6c*/ u32 unk1c6c;
+	s16 altdowntime; // for alt-modes, used like invdowntime and amdowntime
 };
 
 struct ailist {