shithub: sce

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drw: don't try to move beyond map edges

--- a/drw.c

+++ b/drw.c

@@ -72,24 +72,29 @@

 {

 	int i;

 	Point vp;

-	Mobj *mo;

+	Mobj *mo, *it;

-	if(!ptinrect(p, selr) || selected[0] == nil)

+	it = selected[0];

+	if(!ptinrect(p, selr) || it == nil)

 		return;

 	vp = divpt(subpt(p, selr.min), scale);

 	i = fbvis[vp.y * fbw + vp.x];

 	mo = i == -1 ? nil : visbuf[i];

-	if(mo == selected[0]){

-		dprint("select: %#p not moving to itself\n", visbuf[i]);

+	if(mo == it){

+		dprint("select: %#p not moving to itself\n", it);

 		return;

 	}

 	p = divpt(addpt(subpt(p, selr.min), pan), scale);

 	p.x /= Nodewidth;

 	p.y /= Nodeheight;

+	if(nodemapwidth - p.x < it->o->w || nodemapheight - p.y < it->o->h){

+		dprint("select: %#p not moving beyond map edge\n", it);

+		return;

+	}

 	if(mo != nil)

-		sendmovenear(selected[0], p, mo);

+		sendmovenear(it, p, mo);

 	else

-		sendmove(selected[0], p);

+		sendmove(it, p);

 }

 static void