Lunatlazur_MessageTextShake.js

//=============================================================================
// Lunatlazur_MessageTextShake.js
// ----------------------------------------------------------------------------
// Copyright (c) 2020 Taku Aoi
// This plugin is released under the zlib/libpng License.
// http://zlib.net/zlib_license.html
// ----------------------------------------------------------------------------
// Version
// 1.0.0 2020/07/24
// ----------------------------------------------------------------------------
// [Web]    : https://lunatlazur.com/
// [Twitter]: https://twitter.com/aoitaku/
// [GitHub] : https://github.com/Lunatlazur/
//=============================================================================
/*:
 * @plugindesc Add control sequence for message text shaking.
 * @author Taku Aoi
 * @help This plugin adds control sequence for message text shaking.
 *
 * Shake character(s) in message text between `\ANIME` and `\END`.
 * Specified characters keep shaking until window closing.
 *
 * History
 * *******
 *
 * 1.0.0 2020/07/24:
 *   - Published.
 *
 */
/*:ja
 * @plugindesc メッセージテキストシェイクプラグイン
 * @author あおいたく
 * @help このプラグインはメッセージ中の文字をシェイクさせるための制御文字を追加します。
 *
 * `\ANIME` と `\ENDANIME` で囲われた文字をシェイクさせます。
 * 指定された文字はメッセージウインドウが表示されている間ずっとシェイクします。
 *
 * 変更履歴
 * ********
 *
 * 1.0.0 2020/07/24:
 *   - 公開
 *
 */
(function () {
  const AnimativeTextManager = {
    isAnimativeText: false,
  };

  function addAnimativeCharacter (window, char, x, y, width, height) {
    const bitmap = new Bitmap(width, height);
    bitmap.textColor = window.contents.textColor;
    bitmap.fontSize = window.contents.fontSize;
    bitmap.fontFace = window.standardFontFace();
    bitmap.drawText(char, 0, 0, width, height);
    const sprite = new Sprite();
    sprite.x = x + window.padding + width * 0.25;
    sprite.y = y + window.padding + height * 0.5;
    sprite.anchor.x = 0.25;
    sprite.anchor.y = 0.5;
    sprite.bitmap = bitmap;
    window._animativeCharacterSprites.push({
      sprite,
      shakePower: (bitmap.fontSize / 16),
      shakeDirection: 0,
      shakeDuration: 0,
    });
    window.addChild(sprite);
  };

  function clearAnimativeCharacters (window) {
    window._animativeCharacterSprites.forEach(({ sprite }) => {
      window.removeChild(sprite);
    })
    window._animativeCharacterSprites = [];
  };

  function updateAnimativeCharacters (window) {
    window._animativeCharacterSprites.forEach((sprite) => {
      if (sprite.shakeDuration === 0 ) {
        sprite.shakeDirection = Math.random() * Math.PI * 2;
        sprite.shakeDuration = 4;
        sprite.sprite.rotation = Math.random() * Math.PI / 10 - Math.PI / 20;
      } else {
        sprite.shakeDuration--;
        const x = Math.cos(sprite.shakeDirection) * sprite.shakePower;
        const y = Math.sin(sprite.shakeDirection) * sprite.shakePower;
        sprite.sprite.x += x * ((sprite.shakeDuration < 2) ? -1 : 1);
        sprite.sprite.y += y * ((sprite.shakeDuration < 2) ? -1 : 1);
      }
    })
  };

  const Window_Message_initialize = Window_Message.prototype.initialize;
  Window_Message.prototype.initialize = function() {
    Window_Message_initialize.call(this);
    this._animativeCharacterSprites = [];
  };

  const Window_Message_update = Window_Message.prototype.update;
  Window_Message.prototype.update = function() {
    updateAnimativeCharacters(this);
    Window_Message_update.call(this);
  };

  const Window_Message_terminateMessage = Window_Message.prototype.terminateMessage;
  Window_Message.prototype.terminateMessage = function() {
    Window_Message_terminateMessage.call(this);
    clearAnimativeCharacters(this);
  };

  const Window_Message_newPage = Window_Message.prototype.newPage;
  Window_Message.prototype.newPage = function(textState) {
    Window_Message_newPage.call(this, textState);
    clearAnimativeCharacters(this);
  };

  const Window_Message_processNormalCharacter = Window_Message.prototype.processNormalCharacter;
  Window_Message.prototype.processNormalCharacter = function(textState) {
    if (!AnimativeTextManager.isAnimativeText) {
      Window_Message_processNormalCharacter.call(this, textState)
      return;
    }
    const c = textState.text[textState.index++];
    const w = this.textWidth(c);
    addAnimativeCharacter(this, c, textState.x, textState.y, w * 2, textState.height);
    textState.x += w;
  };

  const Window_Message_processEscapeCharacter = Window_Message.prototype.processEscapeCharacter;
  Window_Message.prototype.processEscapeCharacter = function(code, textState) {
    switch (code) {
    case 'ANIME':
      AnimativeTextManager.isAnimativeText = true;
      break;
    case 'ENDANIME':
      AnimativeTextManager.isAnimativeText = false;
      break;
    default:
      Window_Message_processEscapeCharacter.call(this, code, textState);
      break;
    }
  };

})();