Implement looks_size block

Author: adazem009

src/blocks/looksblocks.cpp

@@ -20,6 +20,7 @@ void LooksBlocks::registerBlocks(IEngine *engine)
     engine->addCompileFunction(this, "looks_hide", &compileHide);
     engine->addCompileFunction(this, "looks_changesizeby", &compileChangeSizeBy);
     engine->addCompileFunction(this, "looks_setsizeto", &compileSetSizeTo);
+    engine->addCompileFunction(this, "looks_size", &compileSize);
 
     // Inputs
     engine->addInput(this, "CHANGE", CHANGE);
@@ -48,6 +49,11 @@ void LooksBlocks::compileSetSizeTo(Compiler *compiler)
     compiler->addFunctionCall(&setSizeTo);
 }
 
+void LooksBlocks::compileSize(Compiler *compiler)
+{
+    compiler->addFunctionCall(&size);
+}
+
 unsigned int LooksBlocks::show(VirtualMachine *vm)
 {
     Sprite *sprite = dynamic_cast<Sprite *>(vm->target());
@@ -87,3 +93,15 @@ unsigned int LooksBlocks::setSizeTo(VirtualMachine *vm)
 
     return 1;
 }
+
+unsigned int LooksBlocks::size(VirtualMachine *vm)
+{
+    Sprite *sprite = dynamic_cast<Sprite *>(vm->target());
+
+    if (sprite)
+        vm->addReturnValue(sprite->size());
+    else
+        vm->addReturnValue(0);
+
+    return 0;
+}

src/blocks/looksblocks.h

@@ -33,11 +33,13 @@ class LooksBlocks : public IBlockSection
         static void compileHide(Compiler *compiler);
         static void compileChangeSizeBy(Compiler *compiler);
         static void compileSetSizeTo(Compiler *compiler);
+        static void compileSize(Compiler *compiler);
 
         static unsigned int show(VirtualMachine *vm);
         static unsigned int hide(VirtualMachine *vm);
         static unsigned int changeSizeBy(VirtualMachine *vm);
         static unsigned int setSizeTo(VirtualMachine *vm);
+        static unsigned int size(VirtualMachine *vm);
 };
 
 } // namespace libscratchcpp

test/blocks/looks_blocks_test.cpp

@@ -96,6 +96,7 @@ TEST_F(LooksBlocksTest, RegisterBlocks)
     EXPECT_CALL(m_engineMock, addCompileFunction(m_section.get(), "looks_hide", &LooksBlocks::compileHide));
     EXPECT_CALL(m_engineMock, addCompileFunction(m_section.get(), "looks_changesizeby", &LooksBlocks::compileChangeSizeBy));
     EXPECT_CALL(m_engineMock, addCompileFunction(m_section.get(), "looks_setsizeto", &LooksBlocks::compileSetSizeTo));
+    EXPECT_CALL(m_engineMock, addCompileFunction(m_section.get(), "looks_size", &LooksBlocks::compileSize));
 
     // Inputs
     EXPECT_CALL(m_engineMock, addInput(m_section.get(), "CHANGE", LooksBlocks::CHANGE));
@@ -261,3 +262,37 @@ TEST_F(LooksBlocksTest, SetSizeToImpl)
     ASSERT_EQ(vm.registerCount(), 0);
     ASSERT_EQ(sprite.size(), 87.654);
 }
+
+TEST_F(LooksBlocksTest, Size)
+{
+    Compiler compiler(&m_engineMock);
+
+    auto block = std::make_shared<Block>("a", "looks_size");
+
+    EXPECT_CALL(m_engineMock, functionIndex(&LooksBlocks::size)).WillOnce(Return(0));
+
+    compiler.init();
+    compiler.setBlock(block);
+    LooksBlocks::compileSize(&compiler);
+    compiler.end();
+
+    ASSERT_EQ(compiler.bytecode(), std::vector<unsigned int>({ vm::OP_START, vm::OP_EXEC, 0, vm::OP_HALT }));
+    ASSERT_TRUE(compiler.constValues().empty());
+}
+
+TEST_F(LooksBlocksTest, SizeImpl)
+{
+    static unsigned int bytecode[] = { vm::OP_START, vm::OP_EXEC, 0, vm::OP_HALT };
+    static BlockFunc functions[] = { &LooksBlocks::size };
+
+    Sprite sprite;
+    sprite.setSize(-51.0684);
+
+    VirtualMachine vm(&sprite, nullptr, nullptr);
+    vm.setBytecode(bytecode);
+    vm.setFunctions(functions);
+    vm.run();
+
+    ASSERT_EQ(vm.registerCount(), 1);
+    ASSERT_EQ(vm.getInput(0, 1)->toDouble(), -51.0684);
+}