private void CreateHowToPlayButton()
{
howToButton = new Button (mainLayer);
howToButton.ButtonStyle = ButtonStyle.LevelSelect;
howToButton.PositionX = ContentSize.Center.X;
howToButton.PositionY = 22;
howToButton.Name = "HelpButton";
howToButton.Text = "?";
howToButton.Clicked += HandleHelpClicked;
mainLayer.AddChild (howToButton);
}
private void CreateHud()
{
timer = new Timer ();
timer.PositionX = this.ContentSize.Center.X;
timer.PositionY = this.ContentSize.Height - 20;
hudLayer.AddChild (timer);
var backButton = new Button (hudLayer);
backButton.ButtonStyle = ButtonStyle.LeftArrow;
backButton.Clicked += HandleBackClicked;
backButton.PositionX = 30;
backButton.PositionY = ContentSize.Height - 30;
hudLayer.AddChild (backButton);
}
private void RefreshHighlightableObjects()
{
highlightableObjects.Clear ();
var visibleButtons = levelButtons.Where (item => item.Visible);
highlightableObjects.AddRange (visibleButtons);
if (navigateLeftButton.Visible)
{
highlightableObjects.Add (navigateLeftButton);
}
if (navigateRightButton.Visible)
{
highlightableObjects.Add (navigateRightButton);
}
highlightTarget = null;
}
private void CreateLevelButtons()
{
const int buttonsPerPage = 6;
//得到本页第一个button的序号
int levelIndex0Based = buttonsPerPage * pageNumber;
//本页显示的最后一个button的序号
int maxLevelExclusive = System.Math.Min (levelIndex0Based + 6, LevelManager.Self.NumberOfLevels);
int buttonIndex = 0;
float centerX = this.ContentSize.Center.X;
const float topRowOffsetFromCenter = 16;
float topRowY = this.ContentSize.Center.Y + topRowOffsetFromCenter;
const float spacing = 54;
for (int i = levelIndex0Based; i < maxLevelExclusive; i++)
{
var button = new Button (mainLayer);
// Make it 1-based for non-programmers
button.LevelNumber = i + 1;
button.ButtonStyle = ButtonStyle.LevelSelect;
//因为是横屏，所以坐标的原点在横屏的左下角
button.PositionX = centerX - spacing + (buttonIndex % 3) * spacing;
button.PositionY = topRowY - spacing * (buttonIndex / 3);
button.Name = "LevelButton" + i;
button.Clicked += HandleButtonClicked;
levelButtons.Add (button);
mainLayer.AddChild (button);
//range from 0-5
buttonIndex++;
}
}
private void CreateNavigationButtons()
{
const float horizontalDistanceFromEdge = 36;
const float verticalDistanceFromEdge = 28;
navigateLeftButton = new Button (mainLayer);
navigateLeftButton.ButtonStyle = ButtonStyle.LeftArrow;
navigateLeftButton.PositionX = horizontalDistanceFromEdge;
navigateLeftButton.PositionY = verticalDistanceFromEdge;
navigateLeftButton.Name = "NavigateLeftButton";
navigateLeftButton.Clicked += HandleNavigateLeft;
mainLayer.AddChild(navigateLeftButton);
navigateRightButton = new Button (mainLayer);
navigateRightButton.ButtonStyle = ButtonStyle.RightArrow;
navigateRightButton.PositionX = ContentSize.Width - horizontalDistanceFromEdge;
navigateRightButton.PositionY = verticalDistanceFromEdge;
navigateRightButton.Name = "NavigateLeftButton";
navigateRightButton.Clicked += HandleNavigateRight;
mainLayer.AddChild(navigateRightButton);
UpdateNavigationButtonVisibility ();
}
private void MoveHighlightTo(Button node)
{
controllerHighlight.Position = node.Position;
highlightTarget = node;
}
private void CreateBackButton()
{
const float horizontalDistanceFromEdge = 36;
const float verticalDistanceFromEdge = 28;
backButton = new Button (mainLayer);
backButton.ButtonStyle = ButtonStyle.LeftArrow;
backButton.PositionX = verticalDistanceFromEdge;
backButton.PositionY = ContentSize.Height - verticalDistanceFromEdge;
backButton.Name = "backButton";
backButton.Clicked += HandleBackClicked;
mainLayer.AddChild (backButton);
}
