PPML

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Pixel Place Map Loader

当前为 2022-05-09 提交的版本，查看最新版本。

此脚本不应直接安装。它是供其他脚本使用的外部库，要使用该库请加入元指令 // @require https://update.greasyfork.icu/scripts/443803/1048549/PPML.js

换行

// ==UserScript==
// @name         PPML
// @description  Pixel Place Map Loader
// @version      1.5.1
// @author       0vC4
// @namespace    http://greasyfork.icu/users/670183
// @match        https://pixelplace.io/*
// @icon         https://www.google.com/s2/favicons?sz=64&domain=pixelplace.io
// @license      MIT
// @grant        none
// @run-at       document-start
// ==/UserScript==





const PPML = (() => {
    if (window.PPML) return window.PPML;
    const log = console.log;
  
  
  
    const PPML = {
        config({colors}) {
            Object.assign(PPML, {
                colors
            });
        },
        map: {},
        _hooks: [],
        set onload(func) {
            this._hooks.push(func);
        }
    };
  
  
  
    const Img = window.Image;
    window.Image = function() {
        const img = new Img(...arguments);
  
        Object.defineProperty(img, 'src', {
            enumerable: true,
            configurable: true,
            set(val) {
                this.setAttribute('src', val);
                if (!val.match(/canvas\/\d+\.png\?/)) return;
  
                this.addEventListener('load', () => {
                    const canvas = document.createElement('canvas');
                    canvas.width = this.width;
                    canvas.height = this.height;
  
                    const ctx = canvas.getContext('2d');
                    ctx.drawImage(this, 0, 0);
  
                    const rgba = ctx.getImageData(0, 0, this.width, this.height).data;
                    const pixels = new Uint8Array(rgba.length>>2);
                    for (let i = 0; i < rgba.length; i += 4)
                        pixels[i>>2] = PPML.colors.indexOf((rgba[i]<<16) + (rgba[i+1]<<8) + (rgba[i+2]))-1;
  
                    const {width, height} = this;
                    const map = {
                        pixels, width, height,
                        get(x,y) {
                            return this.pixels[x+y*this.width];
                        },
                        set(x,y,pixel) {
                            const offset = x+y*this.width;
                            if (this.pixels[offset] == null) return;
                            this.pixels[offset] = pixel;
                        }
                    };
  
                    Object.assign(PPML.map, map);
                    PPML._hooks.map(f => f(map));
                });
            }
        });
  
        return img;
    };
    Object.assign(Image, Img);
    for (let k in Img.prototype) try {Image.prototype[k] = Img.prototype[k];} catch (e) {};
  
  
  
    window.PPML = PPML;
    return PPML;
  })();
  // 0vC4#7152