Implement looks_hide block

Author: adazem009

src/blocks/looksblocks.cpp

@@ -16,13 +16,19 @@ std::string LooksBlocks::name() const
 void LooksBlocks::registerBlocks(IEngine *engine)
 {
     engine->addCompileFunction(this, "looks_show", &compileShow);
+    engine->addCompileFunction(this, "looks_hide", &compileHide);
 }
 
 void LooksBlocks::compileShow(Compiler *compiler)
 {
     compiler->addFunctionCall(&show);
 }
 
+void LooksBlocks::compileHide(Compiler *compiler)
+{
+    compiler->addFunctionCall(&hide);
+}
+
 unsigned int LooksBlocks::show(VirtualMachine *vm)
 {
     Sprite *sprite = dynamic_cast<Sprite *>(vm->target());
@@ -32,3 +38,13 @@ unsigned int LooksBlocks::show(VirtualMachine *vm)
 
     return 0;
 }
+
+unsigned int LooksBlocks::hide(VirtualMachine *vm)
+{
+    Sprite *sprite = dynamic_cast<Sprite *>(vm->target());
+
+    if (sprite)
+        sprite->setVisible(false);
+
+    return 0;
+}

src/blocks/looksblocks.h

@@ -28,8 +28,10 @@ class LooksBlocks : public IBlockSection
         void registerBlocks(IEngine *engine) override;
 
         static void compileShow(Compiler *compiler);
+        static void compileHide(Compiler *compiler);
 
         static unsigned int show(VirtualMachine *vm);
+        static unsigned int hide(VirtualMachine *vm);
 };
 
 } // namespace libscratchcpp

test/blocks/looks_blocks_test.cpp

@@ -93,6 +93,7 @@ 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));
 
     m_section->registerBlocks(&m_engineMock);
 }
@@ -136,3 +137,43 @@ TEST_F(LooksBlocksTest, ShowImpl)
     ASSERT_EQ(vm.registerCount(), 0);
     ASSERT_TRUE(sprite.visible());
 }
+
+TEST_F(LooksBlocksTest, Hide)
+{
+    Compiler compiler(&m_engineMock);
+
+    auto block = std::make_shared<Block>("a", "looks_hide");
+
+    EXPECT_CALL(m_engineMock, functionIndex(&LooksBlocks::hide)).WillOnce(Return(0));
+
+    compiler.init();
+    compiler.setBlock(block);
+    LooksBlocks::compileHide(&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, HideImpl)
+{
+    static unsigned int bytecode[] = { vm::OP_START, vm::OP_EXEC, 0, vm::OP_HALT };
+    static BlockFunc functions[] = { &LooksBlocks::hide };
+
+    Sprite sprite;
+    sprite.setVisible(true);
+
+    VirtualMachine vm(&sprite, nullptr, nullptr);
+    vm.setBytecode(bytecode);
+    vm.setFunctions(functions);
+    vm.run();
+
+    ASSERT_EQ(vm.registerCount(), 0);
+    ASSERT_FALSE(sprite.visible());
+
+    vm.reset();
+    vm.run();
+
+    ASSERT_EQ(vm.registerCount(), 0);
+    ASSERT_FALSE(sprite.visible());
+}