public void OnActionButtonClicked(object sender, EventArgs args)
{
// Cast the sender (object that called the action) into what we know it is to be
StyledGameButton clicked = (StyledGameButton)sender;
// We've clicked a button that is currently selected, so let's deselect it
if (SelectedButton == clicked)
{
DescriptionLabel.Text = STARTING_TEXT; // Reset text
clicked.MarkInactive();
SelectedButton = null; // Remove our reference
return;
}
// Set all children to their default colors
foreach (StyledGameButton child in ButtonLayout.Children)
{
child.MarkInactive();
}
// Since this was the clicked one, make its colors the active colors
clicked.MarkActive();
DescriptionLabel.Text = ACTION_CHOSEN_TEXT;
// Keep the reference so we can use it later (see above early exit and below OnShoot)
SelectedButton = clicked;
}
public void OnShootButtonClicked(object sender, EventArgs args)
{
// An option hasn't been clicked (otherwise this wouldn't be null)
if (SelectedButton == null)
{
return;
}
int repetitions = 3;
TimeSpan span = new TimeSpan(0, 0, 1); // Every second
// Make a timer to show to the user
Device.StartTimer(span, () =>
{
// After 3 seconds, show the "Shoot" Text
if (repetitions == 0)
{
DescriptionLabel.Text = GO_TEXT;
}
else if (repetitions == -1) // After shoot is displayed, actually run the game logic
{
string computerChoice = GetRandomComputerChoice();
bool didComputerTie = SelectedButton.Text == computerChoice;
bool didComputerWin = DidComputerWin(SelectedButton.Text, computerChoice);
if (didComputerTie)
{
DescriptionLabel.Text = $"The Computer chose {computerChoice} too\n\nPlay again";
SelectedButton.MarkPreviouslySelected();
}
else if (didComputerWin)
{
DescriptionLabel.Text = $"The Computer chose {computerChoice}\n\nYou Lost.";
SelectedButton.MarkLost();
}
else
{
DescriptionLabel.Text = $"The Computer chose {computerChoice}\n\nYou Won.";
SelectedButton.MarkWon();
}
// Prevent the user from pressing the `Shoot` button over and over
SelectedButton = null;
return(false);
}
else // Otherwise we're still just diplaying the countdown
{
DescriptionLabel.Text = repetitions.ToString();
}
repetitions = repetitions - 1; // or you could do repetitions--;
return(true);
});
}
public GamePageInCSharp()
{
// This tells the Navigation page (App.cs:15) what title to put in the navigation bar.
Title = "C# : RPS";
// Create a layout that is the 'root' or 'parent' that can hold everything (as children)
layout = new StackLayout
{
VerticalOptions = LayoutOptions.CenterAndExpand,
HorizontalOptions = LayoutOptions.FillAndExpand
};
// Create a parent layout for the buttons specifically so we can orient them horizontally in their parent
buttonLayout = new Grid {
HorizontalOptions = LayoutOptions.CenterAndExpand, Margin = new Thickness(10, 0)
};
// We want to make a 1x3 grid where the height is determined by its children
// and the width of each column is equally divided
buttonLayout.RowDefinitions.Add(new RowDefinition {
Height = new GridLength(1, GridUnitType.Auto)
});
buttonLayout.ColumnDefinitions.Add(new ColumnDefinition {
Width = new GridLength(1, GridUnitType.Star)
});
buttonLayout.ColumnDefinitions.Add(new ColumnDefinition {
Width = new GridLength(1, GridUnitType.Star)
});
buttonLayout.ColumnDefinitions.Add(new ColumnDefinition {
Width = new GridLength(1, GridUnitType.Star)
});
// We make this a class level variable so we can change the text from other
// methods later
descriptionLabel = new Label
{
Text = STARTING_TEXT,
FontSize = 24,
FontAttributes = FontAttributes.Bold,
HorizontalTextAlignment = TextAlignment.Center,
Margin = new Thickness(0, 0, 0, 25)
};
// Make the buttons
Button rockButton = new StyledGameButton {
Text = ROCK_ACTION
};
Button paperButton = new StyledGameButton {
Text = PAPER_ACTION
};
Button scissorsButton = new StyledGameButton {
Text = SCISSORS_ACTION
};
Button shootButton = new Button
{
Text = "Shoot",
Margin = 15,
BorderWidth = 1,
BorderColor = Color.SlateGray,
BackgroundColor = Color.DimGray,
TextColor = Color.White,
HorizontalOptions = LayoutOptions.FillAndExpand
};
// Register event handlers when a button is clicked (note that they use the same handler)
rockButton.Clicked += OnActionButtonClicked;
paperButton.Clicked += OnActionButtonClicked;
scissorsButton.Clicked += OnActionButtonClicked;
// Add event handler for when the shoot button is clicked.
shootButton.Clicked += OnShootButtonClicked;
// Add each button to their layout (as a child)
buttonLayout.Children.Add(rockButton, 0, 0);
buttonLayout.Children.Add(paperButton, 1, 0);
buttonLayout.Children.Add(scissorsButton, 2, 0);
// Add each child layout (or view) to the root layout
layout.Children.Add(descriptionLabel);
layout.Children.Add(buttonLayout);
layout.Children.Add(shootButton);
// The content property always has to be set to show anything on a page.
Content = layout;
}