Check for keyboard input.

[CynicSyndrome]

Can you check for keyboard input with a script but no plugin?

if "key" is pressed

stuff

{else} different stuff

 

[LTN Games]

This should do the trick

Input.isKeyTriggered(keycode)
Input.isKeyPressed(keycode)

Keycodes are here: https://keycode.info/
MV also has a keymap so you can use words like 'left', 'right' etc

Input.keyMapper = {
    9: 'tab',       // tab
    13: 'ok',       // enter
    16: 'shift',    // shift
    17: 'control',  // control
    18: 'control',  // alt
    27: 'escape',   // escape
    32: 'ok',       // space
    33: 'pageup',   // pageup
    34: 'pagedown', // pagedown
    37: 'left',     // left arrow
    38: 'up',       // up arrow
    39: 'right',    // right arrow
    40: 'down',     // down arrow
    45: 'escape',   // insert
    81: 'pageup',   // Q
    87: 'pagedown', // W
    88: 'escape',   // X
    90: 'ok',       // Z
    96: 'escape',   // numpad 0
    98: 'down',     // numpad 2
    100: 'left',    // numpad 4
    102: 'right',   // numpad 6
    104: 'up',      // numpad 8
    120: 'debug'    // F9
};

 

[CT_Bolt]

This should do the trick

Input.isKeyTriggered(keycode)
Input.isKeyPressed(keycode)

Keycodes are here: https://keycode.info/
MV also has a keymap so you can use words like 'left', 'right' etc

Input.keyMapper = {
    9: 'tab',       // tab
    13: 'ok',       // enter
    16: 'shift',    // shift
    17: 'control',  // control
    18: 'control',  // alt
    27: 'escape',   // escape
    32: 'ok',       // space
    33: 'pageup',   // pageup
    34: 'pagedown', // pagedown
    37: 'left',     // left arrow
    38: 'up',       // up arrow
    39: 'right',    // right arrow
    40: 'down',     // down arrow
    45: 'escape',   // insert
    81: 'pageup',   // Q
    87: 'pagedown', // W
    88: 'escape',   // X
    90: 'ok',       // Z
    96: 'escape',   // numpad 0
    98: 'down',     // numpad 2
    100: 'left',    // numpad 4
    102: 'right',   // numpad 6
    104: 'up',      // numpad 8
    120: 'debug'    // F9
};

What I'm seeing (& works for me) is just a slight bit different like this...

Input.isTriggered('ok');
...Without the "Key" before "Triggered", also does not seem to take keycodes... only strings for keys...
(or at least didn't work for me like that, maybe that does work & I missed an update though or something?)

isTriggered

• isTriggered(keyName: string): boolean
• • Defined in js/rmmv-ts/src/rpg_core.d.ts:1442
• Checks whether a key is just pressed.
  staticmethod
  isTriggered
  Parameters
  • keyName: string
    The mapped name of the key
• Returns boolean
  True if the key is triggered

Input Documentation (The static class that handles input data from the keyboard and gamepads):

InputStatic | RPGMakerMV Library

The only place I see keycode used is Input._onKeyDown & Input._onKeyUp, see docs here:

InputStatic | RPGMakerMV Library

(They are only binded to the class and pass along the name/state of buttons, not a public method that returns something).
Which those get passed a keyboard event that does contain a keycode.

W3Schools.com

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www.w3schools.com

... but without an overwrite/alias to those functions we're stuck with using that only button names provided by the mapper.
Sadly the Input Object never actually gets passed the keycode only the name defined by the keyMapper.

Maybe I just missed something though?
I could be totally wrong here, and what you mentioned might work, but it crashed when I tried what you had.

 

[LTN Games]

Yup you're right, I should probably double check the source code before reciting from this brain of mine lol

 

[CynicSyndrome]

Thank you, I was able to write my own key mapping plugin that is working now. I was not able to change "shift" into "run" but i think I understand why.