MalRainbowEnemies

//Tag enemies with <rainbow> to allow color hue cycleing in battle

var RainbowHueInterval = 3;
var RainbowHueStep = 2;


var _Sprite_Enemy_update = Sprite_Enemy.prototype.update;
Sprite_Enemy.prototype.update = function() {
    _Sprite_Enemy_update.call(this);

if (this._enemy && this._enemy.isRainbowEnemy()) {
    if (!this._enemy._rainbowFrame) this._enemy._rainbowFrame = 0;
    this._enemy._rainbowFrame++;
    if (this._enemy._rainbowFrame >= RainbowHueInterval) {
        this._enemy._rainbowFrame = 0;
        this._enemy.testColor = (this._enemy.testColor + RainbowHueStep) % 360;
        this.setHue(this._enemy.testColor);
    }
}
};

var _Game_Enemy_initMembers = Game_Enemy.prototype.initMembers;
Game_Enemy.prototype.initMembers = function() {
    _Game_Enemy_initMembers.call(this);
    this.testColor = Math.randomInt(360);
    this._rainbowFrame = 0;
};

Game_Enemy.prototype.battlerHue = function() {
    return this.enemy().battlerHue;
};

Game_Enemy.prototype.isRainbowEnemy = function() {
    return !!$dataEnemies[this.enemy().id].meta.rainbow;
};

Sprite_Enemy.prototype.setHue = function(deg) {
    if (!this._rainbowColorMatrix) {
        if (PIXI && PIXI.filters && PIXI.filters.ColorMatrixFilter) {
            this._rainbowColorMatrix = new PIXI.filters.ColorMatrixFilter();
            var list = this.filters ? this.filters.slice() : [];
            list.push(this._rainbowColorMatrix);
            this.filters = list;
        } else {
            this._rainbowColorMatrix = null;
        }
    }

    if (this._rainbowColorMatrix) {
        this._rainbowColorMatrix.reset();
        this._rainbowColorMatrix.hue(deg, false);
    } else {
        var rad = deg * Math.PI / 180;
        var r = Math.round(60 * Math.sin(rad));
        var b = Math.round(60 * Math.cos(rad));
        this.setColorTone([ r, -r,  b, 0 ]);
    }
};

Sprite_Enemy.prototype.clearRainbowHue = function() {
    if (this._rainbowColorMatrix) {
        var list = (this.filters || []).filter(f => f !== this._rainbowColorMatrix);
        this.filters = list.length ? list : null;
        this._rainbowColorMatrix = null;
    } else {
        this.setColorTone([0,0,0,0]);
    }
};