X-Git-Url: http://git.mutantstargoat.com/user/nuclear/?a=blobdiff_plain;f=src%2Fdemo.c;h=9954cb548cff0baecb8da2b97d88f79d97c1d42e;hb=63b624908206e1cbe56c2ce51cb170d3f6d91126;hp=fe0c2c4596176bbc18be5dd79f421a26509c3076;hpb=ecc362e702b77d5c1334656e6f4dc9b17abcb767;p=dosdemo

diff --git a/src/demo.c b/src/demo.c
index fe0c2c4..9954cb5 100644
--- a/src/demo.c
+++ b/src/demo.c
@@ -3,6 +3,7 @@
 #include <string.h>
 #include <math.h>
 #include <errno.h>
+#include <limits.h>
 #include "demo.h"
 #include "screen.h"
 
@@ -11,16 +12,28 @@ int fb_height = 240;
 int fb_bpp = 16;
 void *fb_pixels;
 unsigned long time_msec;
+int mouse_x, mouse_y;
+unsigned int mouse_bmask;
 
 static unsigned long nframes;
+static const char *start_scr_name = "tunnel";
 
 int demo_init(int argc, char **argv)
 {
+	if(argv[1]) {
+		start_scr_name = argv[1];
+	}
+
 	if(scr_init() == -1) {
 		return -1;
 	}
-	scr_change(scr_lookup("tunnel"), 4000);
+	if(scr_change(scr_lookup(start_scr_name), 4000) == -1) {
+		fprintf(stderr, "screen %s not found\n", start_scr_name);
+		return -1;
+	}
 
+	/* clear the framebuffer at least once */
+	memset(fb_pixels, 0, fb_width * fb_height * fb_bpp / CHAR_BIT);
 	return 0;
 }