[Add] 2x speed modifier by manipulating dt modifier.

[Fix] Fixed double free on keybindings opening.

src/input.c

@@ -48,7 +48,7 @@ const char* keybindNames[] = {
   /* Communication. */
   "hail",
   /* Misc. */
-  "mapzoomin", "mapzoomout", "screenshot", "pause", "menu", "info",
+  "mapzoomin", "mapzoomout", "screenshot", "pause", "speed", "menu", "info",
   "end" /* Must terminate at the end. */
 };
 
@@ -79,17 +79,19 @@ const char* keybindDescription[] = {
   "Clears your escorts commands.",
   /* Space navigation. */
   "Initializes the autonavigation system.",
-  "Cycles through hyperspace targets.",
+  "Cycles through planet targets.",
   "Attempt to land on your targetted planet or targets nearest landable planet. \
     Requests for landing if you don't have permission yet.",
   "Cycles through hyperspace targets.",
   "Opens the Star Map.",
+  "Attempt to jump to your hyperspace target.",
   /* Communication. */
   "Attempts to initialize communication with your taretted ship.",
   /* Misc. */
   "Zooms in on your radar.",
   "Zooms out on your radar.",
   "Takes a screenshot.",
+  "Toggles 2x speed modifier.",
   "Pauses the game.",
   "Opens the small ingame menu.",
   "Opens the information menu."
@@ -145,6 +147,7 @@ void input_setDefault(void) {
   input_setKeybind("mapzoomout",      KEYBIND_KEYBOARD, SDLK_KP_MINUS,    KMOD_NONE,  0);
   input_setKeybind("screenshot",      KEYBIND_KEYBOARD, SDLK_KP_MULTIPLY, KMOD_NONE,  0);
   input_setKeybind("pause",           KEYBIND_KEYBOARD, SDLK_F1,          KMOD_NONE,  0);
+  input_setKeybind("speed",           KEYBIND_KEYBOARD, SDLK_BACKQUOTE,   KMOD_NONE,  0);
   input_setKeybind("menu",            KEYBIND_KEYBOARD, SDLK_ESCAPE,      KMOD_NONE,  0);
   input_setKeybind("info",            KEYBIND_KEYBOARD, SDLK_i,           KMOD_NONE,  0);
 }
@@ -447,6 +450,13 @@ static void input_key(int keynum, double value, int kabs) {
       } else pause_game();
     }
   }
+  /* Toggle speed mode. */
+  else if(KEY("speed")) {
+    if(value == KEY_PRESS) {
+      if(dt_mod == 1.) pause_setSpeed(2.);
+      else pause_setSpeed(1.);
+    }
+  }
   /* Opens a menu. */
   else if(KEY("menu")) {
     if(value == KEY_PRESS) menu_small();

src/lephisto.c

@@ -452,9 +452,11 @@ static void fps_control(void) {
   unsigned int t;
   double delay;
 
-  /* dt in ms/1000. */
+  /* dt in s. */
   t = SDL_GetTicks();
-  cur_dt = (double)(t-time)/1000.;
+  cur_dt =  (double)(t - time); /* Get the elapsed ms. */
+  cur_dt *= dt_mod;             /* Apply the modifier. */
+  cur_dt /= 1000.;              /* Convert to seconds. */
   time = t;
 
   if(paused) SDL_Delay(10); /* Drop paused FPS to be nice to the CPU. */
@@ -476,7 +478,7 @@ static const double fps_min = 1./50.0;
 static void update_all(void) {
   double tmpdt;
 
-  if(cur_dt > 0.25) { /* Slow timers down and rerun calculations */
+  if(cur_dt > 0.25*dt_mod) { /* Slow timers down and rerun calculations */
     pause_delay((unsigned int)cur_dt*1000.);
     return;
   }
@@ -578,8 +580,12 @@ static void display_fps(const double dt) {
 
   x = 10.;
   y = (double)(gl_screen.h - 20);
-  if(show_fps)
+  if(show_fps) {
     gl_print(NULL, x, y, NULL, "%3.2f", fps);
+    y -= gl_defFont.h + 5.;
+  }
+  if(dt_mod != 1.)
+    gl_print(NULL, x, y, NULL, "%3.1fx", dt_mod);
 }
 
 /**

src/options.c

@@ -51,7 +51,7 @@ void opt_menuKeybinds(void) {
 
   /* Create the list. */
   for(i = 0; strcmp(keybindNames[i], "end"); i++);
-  str = malloc(sizeof(char*) * (i-1));
+  str = malloc(sizeof(char*) * i);
   for(j = 0; j < i; j++) {
     str[j] = malloc(sizeof(char) * 64);
     key = input_getKeybind(keybindNames[j], &type, &mod, &reverse);
@@ -75,7 +75,7 @@ void opt_menuKeybinds(void) {
     }
   }
   window_addList(wid, 20, -40, 200, KEYBINDS_HEIGHT-60, "lstKeybinds",
-      str, i-1, 0, menuKeybinds_update);
+      str, i, 0, menuKeybinds_update);
 
   /* Update the list. */
   menuKeybinds_update(wid, NULL);

src/pause.c

@@ -13,6 +13,7 @@
 #include "pause.h"
 
 int paused = 0;     /* Are we paused. */
+double dt_mod = 1.; /**< dt modifier. */
 
 /* From pilot.c */
 extern Pilot** pilot_stack;
@@ -46,6 +47,13 @@ void pause_delay(unsigned int delay) {
   pilot_delay(delay);
 }
 
+/**
+ * @brief Adjust the game's dt modifier.
+ */
+void pause_setSpeed(double mod) {
+  dt_mod = mod;
+}
+
 /* Pilots pausing/unpausing. */
 static void pilot_pause(void) {
   int i, j;

src/pause.h

@@ -1,6 +1,9 @@
 #pragma once
 
 extern int paused;
+extern double dt_mod;
+
+void pause_setSpeed(double mod);
 
 void pause_game(void);
 void unpause_game(void);

src/player.c

@@ -1551,6 +1551,10 @@ void player_abortAutonav(char* reason) {
     /* Get rid of acceleration. */
     player_accelOver();
 
+    /* Drop out of possible different speed modes. */
+    if(dt_mod != 1.)
+      pause_setSpeed(1.);
+
     /* Break possible hyperspacing. */
     if(pilot_isFlag(player, PILOT_HYP_PREP)) {
       pilot_hyperspaceAbort(player);