From 72f1b115451858c81d7b55cf8b9b5eb1de00d56d Mon Sep 17 00:00:00 2001 From: "ol.sc" Date: Sun, 27 Sep 2009 22:33:12 +0000 Subject: [PATCH] Made sure the bounding box coordinates stay in reasonable ranges. git-svn-id: svn://svn.cc65.org/cc65/trunk@4250 b7a2c559-68d2-44c3-8de9-860c34a00d81 --- samples/mousedemo.c | 12 ++++++++---- 1 file changed, 8 insertions(+), 4 deletions(-) diff --git a/samples/mousedemo.c b/samples/mousedemo.c index 1bea09a0d..effc66716 100644 --- a/samples/mousedemo.c +++ b/samples/mousedemo.c @@ -57,6 +57,10 @@ static const unsigned char MouseSprite[64] = { #endif /* __C64__ or __C128__ */ +#define max(a,b) (((a) > (b)) ? (a) : (b)) +#define min(a,b) (((a) < (b)) ? (a) : (b)) + + static void CheckError (const char* S, unsigned char Error) { @@ -182,10 +186,10 @@ int main (void) mouse_setbox (&full_box); } else { Jailed = 1; - small_box.minx = info.pos.x - 10; - small_box.miny = info.pos.y - 10; - small_box.maxx = info.pos.x + 10; - small_box.maxy = info.pos.y + 10; + small_box.minx = max (info.pos.x - 10, full_box.minx); + small_box.miny = max (info.pos.y - 10, full_box.miny); + small_box.maxx = min (info.pos.x + 10, full_box.maxx); + small_box.maxy = min (info.pos.y + 10, full_box.maxy); mouse_setbox (&small_box); } ShowState (Jailed, Invisible); -- 2.39.5