Function apply_scroll

plugins/edgescroll.cpp:118–120

// Apply scroll whilst maintaining boundaries
template<typename T>
static void apply_scroll(T* out, T diff, T min, T max) {
    *out = std::min(std::max(*out + diff, min), max);
}

// Scroll main fortress/adventure world views
static void scroll_dwarfmode(int xdiff, int ydiff) {