GameView.kt

private var playerSize = 0
private var playerRect = RectF()
// Initialize size depending on screen size
private fun initializePlayer() {
    playerSize = height / 4
    playerRect.left = playerSize / 2f
    playerRect.right = playerRect.left + playerSize
}
// Saving emotion flags
private var flags: EmotionFlags
// Set position depending on smile flag
private fun movePlayer() {
    playerRect.top = getObjectYTopForLine(playerSize, isTopLine = flags.isSmile).toFloat()
    playerRect.bottom = playerRect.top + playerSize
}
// We get the top object position
// to draw it in the center of the first or the second line
private fun getObjectYTopForLine(size: Int, isTopLine: Boolean): Int {
    return if (isTopLine) {
        width / 2 - width / 4 - size / 2
    } else {
        width / 2 + width / 4 - size / 2
    }
}
// Saving paint to reuse it in onDraw
private val playerPaint = Paint(Paint.ANTI_ALIAS_FLAG).apply {
    style = Paint.Style.FILL
    color = Color.BLUE
}
// Draw a square in onDraw
private fun drawPlayer(canvas: Canvas) {
    canvas.drawRect(playerRect, playerPaint)
}