public static async Task <Keys> WaitForKey(this IXleGameControl gameControl, bool showPrompt, params Keys[] keys)
{
Keys result = Keys.None;
do
{
result = await gameControl.WaitForKey(showPrompt);
} while (!keys.Contains(result));
return(result);
}
public override async Task Execute()
{
await TextArea.PrintLine();
var player = GameState.Player;
renderer.InventoryScreen = 0;
using (gameControl.PushRenderer(renderer))
{
while (renderer.InventoryScreen < 2)
{
await gameControl.WaitAsync(150);
await gameControl.WaitForKey();
renderer.InventoryScreen++;
}
}
}
/// <summary>
/// Asks the user to choose a number.
/// </summary>
/// <param name="max">The maximum value the user is allowed to select.</param>
/// <returns></returns>
public async Task <int> ChooseNumber(int max)
{
int method = 0;
int amount = 0;
await TextArea.PrintLine();
await TextArea.Print("Enter number by ", XleColor.White);
await TextArea.Print("keyboard", XleColor.Yellow);
await TextArea.Print(" or ", XleColor.White);
await TextArea.Print("joystick", XleColor.Cyan);
await TextArea.PrintLine();
await TextArea.PrintLine();
Keys key;
do
{
key = await gameControl.WaitForKey(showPrompt : false);
if (method == 0)
{
switch (key)
{
case Keys.None:
break;
case Keys.Right:
case Keys.Up:
case Keys.Left:
case Keys.Down:
await TextArea.PrintLine("Use joystick - press button when done");
await TextArea.PrintLine();
await TextArea.PrintLine(" Horizontal - Slow change", XleColor.Cyan);
await TextArea.PrintLine(" Vertical - Fast change", XleColor.Cyan);
await TextArea.PrintLine(" - 0 -");
method = 2;
break;
default:
await TextArea.PrintLine("Keyboard entry-press return when done", XleColor.Yellow);
await TextArea.PrintLine();
await TextArea.PrintLine();
await TextArea.PrintLine(" - 0 -");
method = 1;
break;
}
}
if (method == 1)
{
if (key >= Keys.D0 && key <= Keys.D9)
{
amount = 10 * amount + key - Keys.D0;
}
if (key == Keys.Back)
{
amount /= 10;
}
amount = Math.Min(amount, max);
amount = Math.Max(amount, 0);
await TextArea.RewriteLine(4, " - " + amount.ToString() + " -");
}
else if (method == 2)
{
switch (key)
{
case Keys.Right:
amount++;
break;
case Keys.Up:
amount += 20;
break;
case Keys.Left:
amount--;
break;
case Keys.Down:
amount -= 20;
break;
}
if (amount > max)
{
amount = max;
}
if (amount < 0)
{
amount = 0;
}
await TextArea.RewriteLine(4, " - " + amount.ToString() + " -");
}
} while (key != Keys.Enter);
await TextArea.PrintLine();
return(amount);
}
public async Task <int> QuickMenuCore(MenuItemList items, int spaces, int value, Color clrInit, Color clrChanged)
{
Require.That <ArgumentOutOfRangeException>(value >= 0, "value should be positive");
Require.That <ArgumentOutOfRangeException>(value < items.Count, "value should be less than items.Count");
int result = value;
string topLine;
string bulletLine;
int lineIndex = TextArea.CursorLocation.Y;
Color[] colors = new Color[40];
if (lineIndex >= 4)
{
lineIndex = 3;
}
for (int i = 0; i < 40; i++)
{
colors[i] = clrChanged;
}
int[] spacing = new int[items.Count];
int last = 0;
spacing[0] = 8;
// Construct the temporary line
string tempLine = "Choose: ";
for (int i = 0; i < items.Count; i++)
{
bulletLine = items[i];
tempLine += bulletLine + new string(' ', spaces);
spacing[i] += last + bulletLine.Length - 1;
last = spacing[i] + spaces + 1;
}
await TextArea.PrintLine(tempLine, clrInit);
await TextArea.PrintLine();
topLine = tempLine;
tempLine = new string(' ', spacing[result]) + "`";
await TextArea.RewriteLine(lineIndex + 1, tempLine, clrInit);
Keys key;
do
{
key = await gameControl.WaitForKey(showPrompt : false);
if (key == Keys.Left)
{
result--;
if (result < 0)
{
result = 0;
}
}
if (key == Keys.Right)
{
result++;
if (result >= items.Count)
{
result = items.Count - 1;
}
}
else if (key >= Keys.D0)
{
for (int i = 0; i < items.Count; i++)
{
bulletLine = items[i];
if (key - Keys.A ==
char.ToUpperInvariant(bulletLine[0]) - 'A')
{
result = i;
key = Keys.Enter;
}
}
}
tempLine = new string(' ', spacing[result]) + "`";
if (key != Keys.None)
{
await TextArea.RewriteLine(lineIndex, topLine, clrChanged);
await TextArea.RewriteLine(lineIndex + 1, tempLine, clrChanged);
}
} while (key != Keys.Enter);
await gameControl.WaitAsync(100);
await TextArea.PrintLine();
return(result);
}
private async Task <int> RunSubMenu(SubMenu menu)
{
this.menu = menu;
menuRenderer.Menu = menu;
for (int i = 0; i < menu.theList.Count; i++)
{
if (menu.theList[i].Length + 6 > menu.width)
{
menu.width = menu.theList[i].Length + 6;
}
}
string displayTitle = "Choose " + menu.title;
if (displayTitle.Length + 2 > menu.width)
{
menu.width = displayTitle.Length + 2;
}
try
{
gameControl.PushRenderer(menuRenderer);
Keys key;
do
{
key = await gameControl.WaitForKey(showPrompt : false);
if (key == Keys.Up)
{
menu.value--;
if (menu.value < 0)
{
menu.value = 0;
}
}
if (key == Keys.Down)
{
menu.value++;
if (menu.value >= menu.theList.Count)
{
menu.value = menu.theList.Count - 1;
}
}
else if (key >= Keys.D0)
{
int v;
if (key >= Keys.A)
{
v = (int)(key) - (int)(Keys.A);
v += 10;
}
else
{
v = key - Keys.D0;
}
if (v < menu.theList.Count)
{
menu.value = v;
key = Keys.Enter;
}
}
} while (key != Keys.Enter);
await gameControl.WaitAsync(300);
}
finally
{
gameControl.PopRenderer(menuRenderer);
}
return(menu.value);
}