first commit

1 files changed, 60 insertions, 0 deletions

diff --git a/snip.js b/snip.js
new file mode 100644
index 0000000..5ea1bc4
--- /dev/null
+++ b/snip.js
@@ -0,0 +1,60 @@
+document.customBlocks = document.customBlocks || [];
+document.customBlockList = document.customBlockList || [];
+
+///////////////////////////////////////////////////
+// -> insert custom block definitions here       //
+document.customBlocks.push({test: {type: 'command', category: 'looks', spec: 'test %s'}});
+document.customBlockList.push({category: 'looks', block: 'test'});
+SpriteMorph.prototype.test = function (text) {
+    alert("It works! " + text);
+};
+// end of insert, you can ignore the stuff below //
+///////////////////////////////////////////////////
+
+// helper functions
+function objects_merge(a, b) {
+    var res = {};
+    for (var aattrname in a) {res[aattrname] = a[aattrname];}
+    for (var battrname in b) {res[battrname] = b[battrname];}
+    return res;
+}
+
+function block(selector) {
+    var newBlock = SpriteMorph.prototype.blockForSelector(selector, true);
+    newBlock.isTemplate = true;
+    return newBlock;
+}
+
+if(!SpriteMorph.prototype.wasBlockTemplates) {
+    SpriteMorph.prototype.wasBlockTemplates = SpriteMorph.prototype.blockTemplates;
+    // re-define template function to inject custom blocks
+    SpriteMorph.prototype.blockTemplates = function (category) {
+        blocks = this.wasBlockTemplates(category);
+        document.customBlockList.forEach(function (cblock) {
+            if(cblock.category == category) {
+                blocks.push(block(cblock.block));
+            }
+        });
+        return blocks;
+    };
+}
+
+if(!SpriteMorph.prototype.wasInitBlocks) {
+    SpriteMorph.prototype.wasInitBlocks = SpriteMorph.prototype.initBlocks;
+    // re-define block initialization function
+    SpriteMorph.prototype.initBlocks = function () {
+        this.wasInitBlocks();
+        document.customBlocks.forEach(function (extBlock) {
+            SpriteMorph.prototype.blocks = objects_merge(SpriteMorph.prototype.blocks, extBlock);
+        });
+    };
+}
+
+// refresh the palettes
+world.children.forEach(function (child) {
+    child.flushPaletteCache(); // TODO cache clearing does not work like expected
+    child.refreshPalette();
+    child.sprites.asArray().forEach(function (sprite) {
+        sprite.initBlocks();
+    });
+});