Implement looks_nextbackdrop block

Author: adazem009

src/blocks/looksblocks.cpp

@@ -31,6 +31,7 @@ void LooksBlocks::registerBlocks(IEngine *engine)
     engine->addCompileFunction(this, "looks_switchcostumeto", &compileSwitchCostumeTo);
     engine->addCompileFunction(this, "looks_nextcostume", &compileNextCostume);
     engine->addCompileFunction(this, "looks_switchbackdropto", &compileSwitchBackdropTo);
+    engine->addCompileFunction(this, "looks_nextbackdrop", &compileNextBackdrop);
     engine->addCompileFunction(this, "looks_costumenumbername", &compileCostumeNumberName);
     engine->addCompileFunction(this, "looks_backdropnumbername", &compileBackdropNumberName);
 
@@ -156,6 +157,11 @@ void LooksBlocks::compileSwitchBackdropTo(Compiler *compiler)
     }
 }
 
+void LooksBlocks::compileNextBackdrop(Compiler *compiler)
+{
+    compiler->addFunctionCall(&nextBackdrop);
+}
+
 void LooksBlocks::compileCostumeNumberName(Compiler *compiler)
 {
     int option = compiler->field(NUMBER_NAME)->specialValueId();

src/blocks/looksblocks.h

@@ -45,6 +45,7 @@ class LooksBlocks : public IBlockSection
         static void compileSwitchCostumeTo(Compiler *compiler);
         static void compileNextCostume(Compiler *compiler);
         static void compileSwitchBackdropTo(Compiler *compiler);
+        static void compileNextBackdrop(Compiler *compiler);
         static void compileCostumeNumberName(Compiler *compiler);
         static void compileBackdropNumberName(Compiler *compiler);
 

test/blocks/looks_blocks_test.cpp

@@ -105,6 +105,7 @@ TEST_F(LooksBlocksTest, RegisterBlocks)
     EXPECT_CALL(m_engineMock, addCompileFunction(m_section.get(), "looks_switchcostumeto", &LooksBlocks::compileSwitchCostumeTo));
     EXPECT_CALL(m_engineMock, addCompileFunction(m_section.get(), "looks_nextcostume", &LooksBlocks::compileNextCostume));
     EXPECT_CALL(m_engineMock, addCompileFunction(m_section.get(), "looks_switchbackdropto", &LooksBlocks::compileSwitchBackdropTo));
+    EXPECT_CALL(m_engineMock, addCompileFunction(m_section.get(), "looks_nextbackdrop", &LooksBlocks::compileNextBackdrop));
     EXPECT_CALL(m_engineMock, addCompileFunction(m_section.get(), "looks_costumenumbername", &LooksBlocks::compileCostumeNumberName));
     EXPECT_CALL(m_engineMock, addCompileFunction(m_section.get(), "looks_backdropnumbername", &LooksBlocks::compileBackdropNumberName));
 
@@ -1121,6 +1122,23 @@ TEST_F(LooksBlocksTest, SwitchBackdropToImpl)
     ASSERT_EQ(stage.currentCostume(), 1);
 }
 
+TEST_F(LooksBlocksTest, NextBackdrop)
+{
+    Compiler compiler(&m_engineMock);
+
+    auto block = std::make_shared<Block>("a", "looks_nextbackdrop");
+
+    EXPECT_CALL(m_engineMock, functionIndex(&LooksBlocks::nextBackdrop)).WillOnce(Return(0));
+
+    compiler.init();
+    compiler.setBlock(block);
+    LooksBlocks::compileNextBackdrop(&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, NextBackdropImpl)
 {
     static unsigned int bytecode[] = { vm::OP_START, vm::OP_EXEC, 0, vm::OP_HALT };