模组:制作指南/APIs/Input

製作SMAPI模組

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• 入門
• 遊戲基本架構
• 測試和疑難解答
• 發布
• SMAPI中的API

  基本API：

  • Mod structure
  • Manifest
  • Events
  • Configuration
  • Load & edit content
  • Data
  • Input
  • Logging
  • Reflection
  • Multiplayer
  • Translation
  • Update checks
  • Utilities

  進階API:

  • Content packs
  • Mod console commands
  • Mod integrations
  • Harmony patching

• 更多指南

← 模組:目錄

輸入 API 允許您檢查和抑制控制器/鍵盤/滑鼠狀態。

APIs

檢查按鍵狀態

IsDown

您可以通過調用 IsDown(button) 方法來檢查當前是否按下了任何控制器/鍵盤/滑鼠按鈕。 例如：

bool isShiftPressed = this.Helper.Input.IsDown(SButton.LeftShift) || this.Helper.Input.IsDown(SButton.RightShift);

GetState

要進行更精細的控制，您可以檢查相對於上一次遊戲 tick 的按鍵狀態：

SButtonState state = this.Helper.Input.GetState(SButton.LeftShift);
bool isDown = (state == SButtonState.Pressed || state == SButtonState.Held);

Available button states:

上一次 tick	當前 tick	最終狀態
up	up	None
up	down	Pressed
down	down	Held
down	up	Released

“ “我這裡還有很多事情需要處理。” — 羅賓 不完整的翻譯 本文或部分尚未完全翻譯成中文。 歡迎您通過編輯幫助其建設。 最後編輯Margotbean於2023-07-10 18:18:42.

Check cursor position

The GetCursorPosition() method provides the cursor position in three coordinate systems.

For example:

// draw text at the cursor position
ICursorPosition cursorPos = this.Helper.Input.GetCursorPosition();
Game1.spriteBatch.DrawString(Game1.smallFont, "some text", cursorPos.ScreenPixels, Color.Black);

Suppress input

You can prevent the game from handling any controller/keyboard/mouse button press (including clicks) by suppressing it. This suppression will remain in effect until the player releases the button. This won't prevent other mods from handling it.

method	effect
Suppress	Suppress the specified SButton value.
SuppressActiveKeybinds	For the given KeybindList, suppress every button that's part of an activated keybind.
IsSuppressed	Get whether the specified SButton value is currently suppressed.

For example:

// prevent game from seeing that LeftShift is pressed
this.Helper.Input.Suppress(SButton.LeftShift);

// that works for clicks too:
this.Helper.Input.Suppress(SButton.MouseLeft);

// check if a button is being suppressed:
bool suppressed = this.Helper.Input.IsSuppressed(SButton.LeftShift);

Side-effects:

• The ButtonReleased event will be raised on the next tick for the suppressed input.
• Methods like helper.Input.IsDown(button) and helper.Input.GetState(button) will show the button as released for the duration of the suppression, even if it's physically still pressed. You can use helper.Input.IsSuppressed(button) to check if that's the case (it will only be true until the button is physically released):

  bool isPhysicallyDown = helper.Input.IsDown(button) || helper.Input.IsSuppressed(button);
  

Data structures

SButton

SMAPI's SButton is a constant which includes every controller, keyboard, and mouse button. SMAPI events use this to let you handle button presses without needing separate code for each. See Modding:Player Guide/Key Bindings for a list of values.

SMAPI provides extensions to convert any of the other constants to SButton:

SButton key = Keys.A.ToSButton(); // SButton.A
SButton button = Buttons.A.ToSButton(); // SButton.ControllerA
SButton input = new InputButton(true).ToSButton(); // SButton.MouseLeft

You can also convert SButton to the other constants. This uses a TryGet approach since SButton is a superset of the others (e.g., you can't convert SButton.ControllerA to a keyboard value):

SButton value = SButton.A;
if (value.TryGetKeyboard(out Keys key))
   ...;
if (value.TryGetController(out Buttons button))
   ...;
if (value.TryGetStardewInput(out InputButton input))
   ...;

Two last extensions let you check how the button is mapped in the game:

SButton button = SButton.MouseLeft;
if (button.IsUseToolButton())
   // use tool
else if (button.IsActionButton())
   // perform action

You can use SButton values directly in your config model, but KeybindList is recommended instead in most cases.

KeybindList

SMAPI's KeybindList utility lets you manage an arbitrary set of keybindings. A keybind list has any number of keybinds, each of which has any number of button codes. For example, the keybind list "F2, LeftShift + S" would be pressed if (a) F2 is pressed, or (b) both LeftShift and S are pressed.

You can use a KeybindList directly in your config.json model:

C# model		JSON file
class ModConfig { public KeybindList ToggleKey { get; set; } = KeybindList.Parse("LeftShift + F2"); }	→	{ "ToggleKey": "LeftShift + F2" }

And you can then check whether it's pressed directly in your code. For example, in a ButtonsChanged event handler:

private void OnButtonsChanged(object sender, ButtonsChangedEventArgs e)
{
   if (this.Config.ToggleKey.JustPressed())
   {
      // perform desired action
   }
}

The KeybindList provides a number of methods depending on your use case:

member	description
KeybindList.Parse(…) KeybindList.TryParse(…)	Parse a keybind string like "F2, LeftShift + S" into a keybind list.
IsBound	Whether the keybind list has any keys bound. For example, this would be false for the strings "None" or "".
Keybinds	The individual keybinds. In most cases you shouldn't use these directly.
GetState()	Get the overall keybind state relative to the previous tick. This state is transitive across keybinds; e.g., if the player releases one keybind and immediately presses another within the list, the overall state is Held.
IsDown()	Get whether any keybind in the list is currently down (i.e., the player pressed or is holding down the keys).
JustPressed()	Get whether the player just activated the keybind during the current tick (i.e., GetState() returns Pressed instead of Held).
GetKeybindCurrentlyDown()	Get the individual Keybind in the list which is currently down, if any. If there are multiple keybinds down, the first one is returned.
ToString()	Get a string representation of the input binding (e.g., "F2, LeftShift + S").

Caveats:

• Don't use the ButtonPressed event to check keybinds, since it's raised once for each button pressed. If the player presses two keys at once, your keybind would be activated twice. Use ButtonsChanged instead.

ICursorPosition

SMAPI's ICursorPosition provides the cursor position in four coordinate systems:

• AbsolutePixels is the pixel position relative to the top-left corner of the in-game map, adjusted for zoom but not UI scaling.
• ScreenPixels is the pixel position relative to the top-left corner of the visible screen, adjusted for zoom but not UI scaling.
• Tile is the tile position under the cursor.
• GrabTile is the tile position that the game considers under the cursor for the purposes of clicking actions. This automatically accounts for controller mode. This may be different than Tile if that's too far from the player.

This is returned by the this.Helper.Input.GetCursorPosition() method and in the event args for some input events.

The pixel positions are not adjusted for UI scaling (i.e., they're non-UI mode). Whether you need UI or non-UI positions depends how you're using them, so you can use cursorPos.GetScaledAbsolutePixels() or cursorPos.GetScaledScreenPixels() to adjust them automatically for the current mode or Utility.ModifyCoordinatesForUIScale to always get UI mode coordinates.

See also

• Input events
• Modding:Player Guide/Key Bindings for a list of valid SButton values