small fixes

core/ustring.cpp

@@ -67,11 +67,14 @@ void String::copy_from(const char *p_cstr) {
 		return;
 	}
 	
+
 	resize(len+1); // include 0
 	
-	for(int i=0;i<len+1;i++) {
-	
-		set(i,p_cstr[i]);
+	CharType *dst = this->ptr();
+
+	for (int i=0;i<len+1;i++) {
+
+		dst[i]=p_cstr[i];
 	}
 
 }

servers/physics_2d/space_2d_sw.cpp

@@ -657,8 +657,8 @@ bool Space2DSW::test_body_motion(Body2DSW *p_body,const Vector2&p_motion,float p
 						const Body2DSW *body=static_cast<const Body2DSW*>(col_obj);
 
 						Vector2 cdir = body->get_one_way_collision_direction();
-						if (cdir!=Vector2() && p_motion.dot(cdir)<0)
-							continue;
+						//if (cdir!=Vector2() && p_motion.dot(cdir)<0)
+						//	continue;
 
 						cbk.valid_dir=cdir;
 						cbk.valid_depth=body->get_one_way_collision_max_depth();