Implement looks_changesizeby block

Author: adazem009

src/blocks/looksblocks.cpp

@@ -15,8 +15,13 @@ std::string LooksBlocks::name() const
 
 void LooksBlocks::registerBlocks(IEngine *engine)
 {
+    // Blocks
     engine->addCompileFunction(this, "looks_show", &compileShow);
     engine->addCompileFunction(this, "looks_hide", &compileHide);
+    engine->addCompileFunction(this, "looks_changesizeby", &compileChangeSizeBy);
+
+    // Inputs
+    engine->addInput(this, "CHANGE", CHANGE);
 }
 
 void LooksBlocks::compileShow(Compiler *compiler)
@@ -29,6 +34,12 @@ void LooksBlocks::compileHide(Compiler *compiler)
     compiler->addFunctionCall(&hide);
 }
 
+void LooksBlocks::compileChangeSizeBy(Compiler *compiler)
+{
+    compiler->addInput(CHANGE);
+    compiler->addFunctionCall(&changeSizeBy);
+}
+
 unsigned int LooksBlocks::show(VirtualMachine *vm)
 {
     Sprite *sprite = dynamic_cast<Sprite *>(vm->target());
@@ -48,3 +59,13 @@ unsigned int LooksBlocks::hide(VirtualMachine *vm)
 
     return 0;
 }
+
+unsigned int LooksBlocks::changeSizeBy(VirtualMachine *vm)
+{
+    Sprite *sprite = dynamic_cast<Sprite *>(vm->target());
+
+    if (sprite)
+        sprite->setSize(sprite->size() + vm->getInput(0, 1)->toDouble());
+
+    return 1;
+}

src/blocks/looksblocks.h

@@ -13,6 +13,7 @@ class LooksBlocks : public IBlockSection
     public:
         enum Inputs
         {
+            CHANGE
         };
 
         enum Fields
@@ -29,9 +30,11 @@ class LooksBlocks : public IBlockSection
 
         static void compileShow(Compiler *compiler);
         static void compileHide(Compiler *compiler);
+        static void compileChangeSizeBy(Compiler *compiler);
 
         static unsigned int show(VirtualMachine *vm);
         static unsigned int hide(VirtualMachine *vm);
+        static unsigned int changeSizeBy(VirtualMachine *vm);
 };
 
 } // namespace libscratchcpp

test/blocks/looks_blocks_test.cpp

@@ -94,6 +94,10 @@ TEST_F(LooksBlocksTest, RegisterBlocks)
     // Blocks
     EXPECT_CALL(m_engineMock, addCompileFunction(m_section.get(), "looks_show", &LooksBlocks::compileShow));
     EXPECT_CALL(m_engineMock, addCompileFunction(m_section.get(), "looks_hide", &LooksBlocks::compileHide));
+    EXPECT_CALL(m_engineMock, addCompileFunction(m_section.get(), "looks_changesizeby", &LooksBlocks::compileChangeSizeBy));
+
+    // Inputs
+    EXPECT_CALL(m_engineMock, addInput(m_section.get(), "CHANGE", LooksBlocks::CHANGE));
 
     m_section->registerBlocks(&m_engineMock);
 }
@@ -177,3 +181,42 @@ TEST_F(LooksBlocksTest, HideImpl)
     ASSERT_EQ(vm.registerCount(), 0);
     ASSERT_FALSE(sprite.visible());
 }
+
+TEST_F(LooksBlocksTest, ChangeSizeBy)
+{
+    Compiler compiler(&m_engineMock);
+
+    // change size by (10.05)
+    auto block = std::make_shared<Block>("a", "looks_changesizeby");
+    addValueInput(block, "CHANGE", LooksBlocks::CHANGE, 10.05);
+
+    EXPECT_CALL(m_engineMock, functionIndex(&LooksBlocks::changeSizeBy)).WillOnce(Return(0));
+
+    compiler.init();
+    compiler.setBlock(block);
+    LooksBlocks::compileChangeSizeBy(&compiler);
+    compiler.end();
+
+    ASSERT_EQ(compiler.bytecode(), std::vector<unsigned int>({ vm::OP_START, vm::OP_CONST, 0, vm::OP_EXEC, 0, vm::OP_HALT }));
+    ASSERT_EQ(compiler.constValues().size(), 1);
+    ASSERT_EQ(compiler.constValues()[0].toDouble(), 10.05);
+}
+
+TEST_F(LooksBlocksTest, ChangeSizeByImpl)
+{
+    static unsigned int bytecode[] = { vm::OP_START, vm::OP_CONST, 0, vm::OP_EXEC, 0, vm::OP_HALT };
+    static BlockFunc functions[] = { &LooksBlocks::changeSizeBy };
+    static Value constValues[] = { 10.05 };
+
+    Sprite sprite;
+    sprite.setSize(1.308);
+
+    VirtualMachine vm(&sprite, nullptr, nullptr);
+    vm.setBytecode(bytecode);
+    vm.setFunctions(functions);
+    vm.setConstValues(constValues);
+    vm.run();
+
+    ASSERT_EQ(vm.registerCount(), 0);
+    ASSERT_EQ(sprite.size(), 11.358);
+}