bakapi modex16 test fun: allow video mode choice from command line.

new "-mx <mode>" option to do that. Modes look good, though 192x144 is a
little off.

diff --git a/src/bakapi.c b/src/bakapi.c
index 7724507f7bb81d55f7bcbbb3d8c4d3bdc45a910b..1b839a21bb0d8b9c7c0aa5d43267746e928d0b15 100755 (executable)
--- a/src/bakapi.c
+++ b/src/bakapi.c
@@ -28,11 +28,42 @@
 global_game_variables_t gvar;
 static bakapee_t bakapee;
 word key,d,xpos,ypos,xdir,ydir;
+sword vgamodex_mode = 1; // 320x240 default
 int ch=0x0;
 
 void
 main(int argc, char *argvar[])
 {
+       char *a;
+       int i;
+
+       // allow changing default mode from command line
+       for (i=1;i < argc;) {
+               a = argvar[i++];
+
+               if (*a == '-') {
+                       do { a++; } while (*a == '-');
+
+                       if (!strcmp(a,"mx")) {
+                               // (based on src/lib/modex16.c)
+                               // 1 = 320x240
+                               // 2 = 160x120
+                               // 3 = 320x200
+                               // 4 = 192x144
+                               // 5 = 256x192
+                               vgamodex_mode = (sword)strtoul(argvar[i++],NULL,0);
+                       }
+                       else {
+                               fprintf(stderr,"Unknown switch %s\n",a);
+                               return;
+                       }
+               }
+               else {
+                       fprintf(stderr,"Unknown command arg %s\n",a);
+                       return;
+               }
+       }
+
        // DOSLIB: check our environment
        probe_dos();
 
@@ -63,7 +94,7 @@ main(int argc, char *argvar[])
        ydir=1;
 
 #ifdef MXLIB
-       VGAmodeX(1, &gvar); // TODO: Suggestion: Instead of magic numbers for the first param, might I suggest defining an enum or some #define constants that are easier to remember? --J.C.
+       VGAmodeX(vgamodex_mode, &gvar); // TODO: Suggestion: Instead of magic numbers for the first param, might I suggest defining an enum or some #define constants that are easier to remember? --J.C.
 #else
 # error REMOVED // this code is written around modex16 which so far is a better fit than using DOSLIB vga directly, so leave MXLIB code in.
                // we'll integrate DOSLIB vga into that part of the code instead for less disruption. -- J.C.
@@ -146,7 +177,7 @@ main(int argc, char *argvar[])
                                        gvar.video.page[0] = modexDefaultPage(&gvar.video.page[0]);
                                        gvar.video.page[0].width += (TILEWH*2);
                                        gvar.video.page[0].height += (TILEWH*2);
-                                       VGAmodeX(1, &gvar);
+                                       VGAmodeX(vgamodex_mode, &gvar);
 # else
 #  error REMOVED // this code is written around modex16 which so far is a better fit than using DOSLIB vga directly, so leave MXLIB code in.
                // we'll integrate DOSLIB vga into that part of the code instead for less disruption. -- J.C.