Move sprites task to gulp

Gruntfile.js

@@ -2,57 +2,6 @@
 var _ = require('lodash');
 module.exports = function(grunt) {
 
-  // Ported from shared
-  // So this sucks. Mobile Safari can't render image files > 1024x1024*3, so we have to break it down to multiple
-  // files in this hack approach. See https://github.com/Ensighten/grunt-spritesmith/issues/67#issuecomment-34786248
-  var images = grunt.file.expand('common/img/sprites/spritesmith/**/*.png');
-//  var totalDims = {width:0,height:0};
-//  _.each(images, function(img){
-//    var dims = sizeOf(img);
-//    if(!dims.width || !dims.height) console.log(dims);
-//    totalDims.width += dims.width;
-//    totalDims.height += dims.height;
-//  })
-  var COUNT = 7;//Math.ceil( (totalDims.width * totalDims.height) / (1024*1024*3) );
-  //console.log({totalDims:totalDims,COUNT:COUNT});
-
-  var sprite = {};
-  _.times(COUNT, function(i){
-    var sliced = images.slice(i * (images.length/COUNT), (i+1) * images.length/COUNT)
-    sprite[''+i] = {
-      src: sliced,
-      dest: 'common/dist/sprites/spritesmith'+i+'.png',
-      destCss: 'common/dist/sprites/spritesmith'+i+'.css',
-      engine: 'phantomjssmith',
-      algorithm: 'binary-tree',
-      padding:1,
-      cssTemplate: 'common/css/css.template.mustache',
-      cssVarMap: function (sprite) {
-        // For hair, skins, beards, etc. we want to output a '.customize-options.WHATEVER' class, which works as a
-        // 60x60 image pointing at the proper part of the 90x90 sprite.
-        // We set up the custom info here, and the template makes use of it.
-        if (sprite.name.match(/hair|skin|beard|mustach|shirt|flower|^headAccessory_special_\w+Ears/) || sprite.name=='head_0') {
-          sprite.custom = {
-            px: {
-              offset_x: "-" + (sprite.x + 25) + "px",
-              offset_y: "-" + (sprite.y + 15) + "px",
-              width: "" + 60 + "px",
-              height: "" + 60 + "px"
-            }
-          }
-        }
-        if (~sprite.name.indexOf('shirt'))
-          sprite.custom.px.offset_y = "-" + (sprite.y + 30) + "px"; // even more for shirts
-      }
-      /*,cssOpts: {
-       cssClass: function (item) {
-       return '.' + item.name; //'.sprite-' + item.name;
-       }
-       }*/
-    }
-  });
-
-
   // Project configuration.
   grunt.initConfig({
     pkg: grunt.file.readJSON('package.json'),
@@ -69,24 +18,7 @@ module.exports = function(grunt) {
     },
 
     clean: {
-      build: ['website/build'],
+      build: ['website/build']
-      sprite: ['common/dist/sprites']
-    },
-
-    sprite: sprite,
-
-    imagemin: {
-      spritesmith: {
-        options: {
-          optimizationLevel: 7
-        },
-        files: [{
-          expand: true,
-          flatten: true,
-          src: ["common/dist/sprites/*.png"],
-          dest: "common/dist/sprites/"
-        }]
-      }
     },
 
     cssmin: {
@@ -200,7 +132,6 @@ module.exports = function(grunt) {
   });
 
   // Register tasks.
-  grunt.registerTask('compile:sprites', ['clean:sprite', 'sprite', 'imagemin', 'cssmin']);
   grunt.registerTask('build:prod', ['loadManifestFiles', 'clean:build', 'browserify', 'uglify', 'stylus', 'cssmin', 'copy:build', 'hashres']);
   grunt.registerTask('build:dev', ['browserify', 'stylus']);
   grunt.registerTask('build:test', ['test:prepare:translations', 'build:dev']);
@@ -222,8 +153,6 @@ module.exports = function(grunt) {
   grunt.loadNpmTasks('grunt-contrib-cssmin');
   grunt.loadNpmTasks('grunt-contrib-copy');
   grunt.loadNpmTasks('grunt-contrib-watch');
-  grunt.loadNpmTasks('grunt-spritesmith');
-  grunt.loadNpmTasks('grunt-contrib-imagemin');
   grunt.loadNpmTasks('grunt-hashres');
   grunt.loadNpmTasks('grunt-karma');
 

package.json

@@ -31,7 +31,6 @@
     "grunt-contrib-watch": "~0.6.1",
     "grunt-hashres": "~0.4.1",
     "grunt-karma": "~0.6.2",
-    "grunt-spritesmith": "~3.5.0",
     "gulp": "^3.9.0",
     "gulp-grunt": "^0.5.2",
     "icalendar": "lefnire/node-icalendar#e06da0e55901f0ba940dfadc42c158ed0b1fead9",
@@ -82,6 +81,7 @@
   "scripts": {
     "test": "gulp test",
     "start": "gulp run:dev",
+    "sprites": "gulp sprites:compile",
     "postinstall": "bower --config.interactive=false install -f; gulp build;",
     "coverage": "COVERAGE=true mocha --require register-handlers.js --reporter html-cov > coverage.html; open coverage.html"
   },
@@ -94,8 +94,10 @@
     "event-stream": "^3.2.2",
     "expect.js": "~0.2.0",
     "glob": "^4.3.5",
-    "grunt-contrib-imagemin": "^0.9.4",
+    "gulp-clean": "^0.3.1",
+    "gulp-imagemin": "^2.3.0",
     "gulp-nodemon": "^2.0.4",
+    "gulp.spritesmith": "^4.1.0",
     "istanbul": "^0.3.14",
     "karma": "~0.10.2",
     "karma-chai-plugins": "~0.1.0",
@@ -112,12 +114,11 @@
     "karma-requirejs": "~0.2.0",
     "karma-script-launcher": "~0.1.0",
     "lcov-result-merger": "^1.0.2",
+    "merge-stream": "^1.0.0",
     "mocha": "~1.12.1",
     "mongoskin": "~0.6.1",
-    "phantomjssmith": "~0.5.4",
     "protractor": "~2.0.0",
     "rewire": "^2.3.3",
-    "rimraf": "^2.2.8",
     "shelljs": "^0.4.0",
     "sinon": "1.15.4",
     "sinon-chai": "^2.7.0",

tasks/gulp-sprites.js

@@ -0,0 +1,128 @@
+import gulp from 'gulp';
+import imagemin from 'gulp-imagemin';
+import spritesmith from 'gulp.spritesmith';
+import clean from 'gulp-clean';
+import sizeOf from 'image-size';
+import merge from 'merge-stream';
+import {sync} from 'glob';
+import {times, each} from 'lodash';
+
+const SPRITES_SRC = sync('common/img/sprites/spritesmith/**/*.png');
+const DIST_PATH = 'common/dist/sprites/';
+
+// https://github.com/Ensighten/grunt-spritesmith/issues/67#issuecomment-34786248
+const MAX_SPRITESHEET_SIZE = 1024 * 1024 * 3;
+const SPRITESHEET_COUNT = _calculateNumberOfSpritesheets();
+const NUMBER_OF_SPRITES_PER_SHEET = SPRITES_SRC.length / SPRITESHEET_COUNT;
+
+let spritesTasks = ['sprites:clean'];
+
+times(SPRITESHEET_COUNT, (i) => {
+  let slicedSrc = _getSliceSrc(i);
+
+  let taskName = `sprites:${i}`;
+  spritesTasks.push(taskName);
+
+  gulp.task(taskName, () => {
+    let spriteData = gulp.src(slicedSrc)
+      .pipe(spritesmith({
+        imgName: `spritesmith${i}.png`,
+        cssName: `spritesmith${i}.css`,
+        algorithm: 'binary-tree',
+        padding:1,
+        cssTemplate: 'common/css/css.template.mustache',
+        cssVarMap: _cssVarMap
+      }));
+
+    let imgStream = spriteData.img
+      .pipe(imagemin())
+      .pipe(gulp.dest(DIST_PATH));
+
+    let cssStream = spriteData.css
+      .pipe(gulp.dest(DIST_PATH));
+
+    return merge(imgStream, cssStream);
+  });
+});
+
+gulp.task('sprites:clean', (done) => {
+  gulp.src(`${DIST_PATH}spritesmith*`)
+    .pipe(clean());
+
+  done();
+});
+
+gulp.task('sprites:checkCompiledDimensions', () => {
+  console.log('Verifiying that images do not exceed max dimensions');
+
+  let numberOfSheetsThatAreTooBig = 0;
+
+  times(SPRITESHEET_COUNT, (i) => {
+    let fileName = `spritesmith${i}.png`;
+    let spritesheetPath = `${DIST_PATH}${fileName}`
+    let spriteSize = _calculateImgDimensions(spritesheetPath);
+
+
+    if (spriteSize > MAX_SPRITESHEET_SIZE) {
+      numberOfSheetsThatAreTooBig++;
+      console.error(`WARNING: ${fileName} is too big - ${spriteSize} > ${MAX_SPRITESHEET_SIZE}`);
+    }
+  });
+
+  if (numberOfSheetsThatAreTooBig > 0) {
+    console.error(`${numberOfSheetsThatAreTooBig} sheets are too big :(`);
+    console.error('Mobile Safari may be unhappy with you');
+  }
+});
+
+gulp.task('sprites:compile', spritesTasks, () => {
+  gulp.run('sprites:checkCompiledDimensions');
+});
+
+function _getSliceSrc(num) {
+  let start = num * NUMBER_OF_SPRITES_PER_SHEET;
+  let end = (num + 1) * NUMBER_OF_SPRITES_PER_SHEET;
+  let src = SPRITES_SRC.slice(start, end)
+
+  return src;
+}
+
+function _calculateNumberOfSpritesheets() {
+  let totalPixels = 0;
+
+  each(SPRITES_SRC, function(img){
+    totalPixels += _calculateImgDimensions(img);
+  });
+
+  let numberOfSpriteSheets = Math.ceil(totalPixels / MAX_SPRITESHEET_SIZE);
+
+  return numberOfSpriteSheets;
+}
+
+function _calculateImgDimensions(img) {
+  let dims = sizeOf(img);
+
+  if(!dims.width || !dims.height) console.error('MISSING DIMENSIONS:', dims);
+
+  let totalPixelSize = dims.width * dims.height;
+
+  return totalPixelSize;
+}
+
+function _cssVarMap(sprite) {
+  // For hair, skins, beards, etc. we want to output a '.customize-options.WHATEVER' class, which works as a
+  // 60x60 image pointing at the proper part of the 90x90 sprite.
+  // We set up the custom info here, and the template makes use of it.
+  if (sprite.name.match(/hair|skin|beard|mustach|shirt|flower|^headAccessory_special_\w+Ears/) || sprite.name=='head_0') {
+    sprite.custom = {
+      px: {
+        offset_x: `-${ sprite.x + 25 }px`,
+        offset_y: `-${ sprite.y + 15 }px`,
+        width: '60px',
+        height: '60px'
+      }
+    }
+  }
+  if (~sprite.name.indexOf('shirt'))
+    sprite.custom.px.offset_y = `-${ sprite.y + 30 }px`; // even more for shirts
+}

vagrant.sh

@@ -71,8 +71,8 @@ apt-get install -qq nodejs
 
 cd /vagrant
 
-echo Installing grunt/bower...
+echo Installing gulp/bower...
-npm install -g grunt-cli bower phantomjs
+npm install -g gulp grunt-cli bower
 
 echo Installing Habitica
 npm install --no-bin-link