2063 	bool swap = SwapDirection(style, start_tile, end_tile);

  2063 	bool swap = SwapDirection(style, start_tile, end_tile);

  2064 	byte style_t;

  2064 	byte style_t;

  2065 	uint h0, h1, ht; // start heigth, end height, and temp variable

  2065 	uint h0, h1, ht; // start heigth, end height, and temp variable

  2066 

  2066 

  2067 	if (start_tile == end_tile) return 0;

  2067 	if (start_tile == end_tile) return 0;

  2069 

  2069 

  2070 	switch (style & HT_DRAG_MASK) {

  2070 	switch (style & HT_DRAG_MASK) {

  2071 		case HT_RECT: {

  2071 		case HT_RECT: {

  2072 			static const TileIndexDiffC heightdiff_area_by_dir[] = {

  2072 			static const TileIndexDiffC heightdiff_area_by_dir[] = {

  2073 				/* Start */ {1, 0}, /* Dragging east */ {0, 0}, /* Dragging south */

  2073 				/* Start */ {1, 0}, /* Dragging east */ {0, 0}, /* Dragging south */

  2123 			ht = TileHeight(TILE_ADD(end_tile, ToTileIndexDiff(heightdiff_line_by_dir[12 + style_t + 1])));

  2123 			ht = TileHeight(TILE_ADD(end_tile, ToTileIndexDiff(heightdiff_line_by_dir[12 + style_t + 1])));

  2124 			h1 = max(h1, ht);

  2124 			h1 = max(h1, ht);

  2125 		} break;

  2125 		} break;

  2126 	}

  2126 	}

  2127 

  2127 

  2129 	/* Minimap shows height in intervals of 50 meters, let's do the same */

  2129 	/* Minimap shows height in intervals of 50 meters, let's do the same */

  2130 	return (int)(h1 - h0) * 50;

  2130 	return (int)(h1 - h0) * 50;

  2131 }

  2131 }

  2132 

  2132 

  2133 static const StringID measure_strings_length[] = {STR_NULL, STR_MEASURE_LENGTH, STR_MEASURE_LENGTH_HEIGHTDIFF};

  2133 static const StringID measure_strings_length[] = {STR_NULL, STR_MEASURE_LENGTH, STR_MEASURE_LENGTH_HEIGHTDIFF};