public void method290(int y, int arg1, int x, int z) {
		GroundTile groundTile = groundTiles[z][x][y];
		if (groundTile == null) {
			return;
		}
		WallDecoration wallDecoration = groundTile.wallDecoration;
		if (wallDecoration != null) {
			int offX = x * 128 + 64;
			int offY = y * 128 + 64;
			wallDecoration.x = offX + (wallDecoration.x - offX) * arg1 / 16;
			wallDecoration.y = offY + (wallDecoration.y - offY) * arg1 / 16;
		}
	}