Cake.kt

// Move the cake off the screen right away
private fun initializeCake() {
    cakeSize = height / 8
    moveCakeToStartPoint()
}
private fun moveCakeToStartPoint() {
    // Choose a random position
    cakeRect.left = width + width * Random.nextFloat()
    cakeRect.right = cakeRect.left + cakeSize
    // Choose a random line
    val isTopLine = Random.nextBoolean()
    cakeRect.top = getObjectYTopForLine(cakeSize, isTopLine).toFloat()
    cakeRect.bottom = cakeRect.top + cakeSize
}
// Mpve the cake by time
private fun moveCake() {
    val currentTime = System.currentTimeMillis()
    val deltaTime = currentTime - previousTimestamp
    val deltaX = cakeSpeed * width * deltaTime
    cakeRect.left -= deltaX
    cakeRect.right = cakeRect.left + cakeSize
    previousTimestamp = currentTime
}
// If the cake and the player intersect each other then count a point
private fun checkPlayerCaughtCake() {
    if (RectF.intersects(playerRect, cakeRect)) {
        score += if (flags.isLeftEyeOpen && flags.isRightEyeOpen) 1 else 2
        moveCakeToStartPoint()
    }
}
// If the player misses the cake then move the cake off the screen again
private fun checkCakeIsOutOfScreenStart() {
    if (cakeRect.right < 0) {
        moveCakeToStartPoint()
    }
}