We now limit how far ahead you can get. This is measured in screen

[vor.git] / main.c

diff --git a/main.c b/main.c
index c2e6601..a2bdcbc 100644 (file)
--- a/main.c
+++ b/main.c
@@ -19,11 +19,23 @@
  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
  */
 
+#include <argp.h>
+#include <math.h>
+#include <SDL/SDL.h>
+#include <SDL/SDL_image.h>
+#include <stdarg.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include "SFont.h"
+
 #ifdef DEBUG
 #include "debug.h"
 #endif
 
 #include "args.h"
+#include "common.h"
 #include "config.h"
 #include "file.h"
 #include "globals.h"
@@ -32,17 +44,6 @@
 #include "shape.h"
 #include "sound.h"
 
-#include <argp.h>
-#include <math.h>
-#include <SDL/SDL.h>
-#include <SDL/SDL_image.h>
-#include <stdarg.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-
-#include "SFont.h"
-
 // ************************************* VARS
 // SDL_Surface global variables
 SDL_Surface 
@@ -116,6 +117,8 @@ char *data_dir;
 extern char *optarg;
 extern int optind, opterr, optopt;
 
+#define TO_TICKS(seconds) ((seconds)*20*opt_gamespeed)
+
 // ************************************* FUNCS
 
 float
@@ -714,13 +717,14 @@ gameloop() {
                        screendx = -tmp;
 
                        // taper off if we would hit the barrier in under 2 seconds.
-                       if(back_dist + (screendx - SCREENDXMIN)*2*20*opt_gamespeed < 0) {
-                               screendx = SCREENDXMIN - (back_dist/(2*20*opt_gamespeed));
+                       if(back_dist + (screendx - SCREENDXMIN)*TO_TICKS(2) < 0) {
+                               screendx = SCREENDXMIN - (back_dist/TO_TICKS(2));
                        }
 
                        xscroll = screendx * framelen;
                        yscroll = screendy * framelen;
                        back_dist += (screendx - SCREENDXMIN)*framelen;
+                       if(opt_max_lead >= 0) back_dist = min(back_dist, opt_max_lead);
 
                        shipx -= xscroll;
                        shipy -= yscroll;