/**
 *  Converts all trains to the new subtype format introduced in savegame 16.2
 *  It also links multiheaded engines or make them forget they are multiheaded if no suitable partner is found
 */
void ConvertOldMultiheadToNew()
{
	Train *t;
	FOR_ALL_TRAINS(t) SetBit(t->subtype, 7); // indicates that it's the old format and needs to be converted in the next loop

	FOR_ALL_TRAINS(t) {
		if (HasBit(t->subtype, 7) && ((t->subtype & ~0x80) == 0 || (t->subtype & ~0x80) == 4)) {
			for (Train *u = t; u != NULL; u = u->Next()) {
				const RailVehicleInfo *rvi = RailVehInfo(u->engine_type);

				ClrBit(u->subtype, 7);
				switch (u->subtype) {
					case 0: // TS_Front_Engine
						if (rvi->railveh_type == RAILVEH_MULTIHEAD) u->SetMultiheaded();
						u->SetFrontEngine();
						u->SetEngine();
						break;

					case 1: // TS_Artic_Part
						u->subtype = 0;
						u->SetArticulatedPart();
						break;

					case 2: // TS_Not_First
						u->subtype = 0;
						if (rvi->railveh_type == RAILVEH_WAGON) {
							/* normal wagon */
							u->SetWagon();
							break;
						}
						if (rvi->railveh_type == RAILVEH_MULTIHEAD && rvi->image_index == u->spritenum - 1) {
							/* rear end of a multiheaded engine */
							u->SetMultiheaded();
							break;
						}
						if (rvi->railveh_type == RAILVEH_MULTIHEAD) u->SetMultiheaded();
						u->SetEngine();
						break;

					case 4: // TS_Free_Car
						u->subtype = 0;
						u->SetWagon();
						u->SetFreeWagon();
						break;
					default: NOT_REACHED();
				}
			}
		}
	}
}
Beispiel #2
0
/**
 * Highlight the position where a rail vehicle is dragged over by drawing a light gray background.
 * @param px        The current x position to draw from.
 * @param max_width The maximum space available to draw.
 * @param selection Selected vehicle that is dragged.
 * @param chain     Whether a whole chain is dragged.
 * @return The width of the highlight mark.
 */
static int HighlightDragPosition(int px, int max_width, VehicleID selection, bool chain)
{
	bool rtl = _current_text_dir == TD_RTL;

	assert(selection != INVALID_VEHICLE);
	int dragged_width = WD_FRAMERECT_LEFT + WD_FRAMERECT_RIGHT;
	for (Train *t = Train::Get(selection); t != NULL; t = chain ? t->Next() : (t->HasArticulatedPart() ? t->GetNextArticulatedPart() : NULL)) {
		dragged_width += t->GetDisplayImageWidth(NULL);
	}

	int drag_hlight_left = rtl ? max(px -dragged_width, 0) : px;
	int drag_hlight_right = rtl ? px : min(px + dragged_width, max_width);
	int drag_hlight_width = max(drag_hlight_right - drag_hlight_left, 0);

	if (drag_hlight_width > 0) {
		GfxFillRect(drag_hlight_left + WD_FRAMERECT_LEFT, WD_FRAMERECT_TOP + 1,
				drag_hlight_right - WD_FRAMERECT_RIGHT, ScaleGUITrad(13) - WD_FRAMERECT_BOTTOM, _colour_gradient[COLOUR_GREY][7]);
	}

	return drag_hlight_width;
}