I want to create a word-puzzle game, where the user creates words by moving over the grid of letters. I don’t understand how to implement the vertical and horizontal moving (only these directions should be enabled) and select letters in the grid. For this time I have added only animation of the size when ‘onDrag’ method is called. I use Canvas and drawRoundRect to create a movable rectangular.The code I wrote:

@Composable
fun GameField() {

var selectedWord by remember { mutableStateOf("") }

var offsetX by remember {
    mutableStateOf(0f)
}
var offsetY by remember {
    mutableStateOf(0f)
}
 var width by remember {
        mutableStateOf(0.dp)
    }
    var height by remember {
        mutableStateOf(0.dp)
    }

Box(
    modifier = Modifier
        .fillMaxWidth()
        .height(200.dp),
    contentAlignment = Alignment.Center
) {
    

    LazyVerticalGrid(
        columns = GridCells.Fixed(6),
        modifier = Modifier,
        verticalArrangement = Arrangement.spacedBy(1.dp)
    ) {
        items(letters) { item ->
            LetterItem(
                letter = item,
                modifier = Modifier,
                selectedWord = selectedWord,
                onWordSelected = { selectedWord = it }
            )
        }
    }
    MovableRectangle(
        modifier = Modifier
            .pointerInput(Unit) {
                detectDragGestures(
                    onDragStart = { offset ->

                        offsetX = offset.x
                        offsetY = offset.y
                    },
                    onDrag = { change, dragAmount ->
                        width += dragAmount.x.toDp()
                        height += dragAmount.y.toDp()
                    },
                    onDragEnd = {
                        height = 0.dp
                        width = 0.dp
                    }
                )
            },
        color = colorResource(id = Color.Blue),
        width = width.value,
        height = height.value,
        offsetX = offsetX,
        offsetY = offsetY,
    )
}

}