Implement motion_yposition block

Author: adazem009

src/blocks/motionblocks.cpp

@@ -55,6 +55,7 @@ void MotionBlocks::registerBlocks(IEngine *engine)
     engine->addCompileFunction(this, "motion_ifonedgebounce", &compileIfOnEdgeBounce);
     engine->addCompileFunction(this, "motion_setrotationstyle", &compileSetRotationStyle);
     engine->addCompileFunction(this, "motion_xposition", &compileXPosition);
+    engine->addCompileFunction(this, "motion_yposition", &compileYPosition);
 }
 
 CompilerValue *MotionBlocks::compileMoveSteps(Compiler *compiler)
@@ -336,6 +337,14 @@ CompilerValue *MotionBlocks::compileXPosition(Compiler *compiler)
         return compiler->addTargetFunctionCall("motion_xposition", Compiler::StaticType::Number);
 }
 
+CompilerValue *MotionBlocks::compileYPosition(Compiler *compiler)
+{
+    if (compiler->target()->isStage())
+        return compiler->addConstValue(0);
+    else
+        return compiler->addTargetFunctionCall("motion_yposition", Compiler::StaticType::Number);
+}
+
 extern "C" void motion_movesteps(Sprite *sprite, double steps)
 {
     double dir = sprite->direction();

src/blocks/motionblocks.h

@@ -33,6 +33,7 @@ class MotionBlocks : public IExtension
         static CompilerValue *compileIfOnEdgeBounce(Compiler *compiler);
         static CompilerValue *compileSetRotationStyle(Compiler *compiler);
         static CompilerValue *compileXPosition(Compiler *compiler);
+        static CompilerValue *compileYPosition(Compiler *compiler);
 };
 
 } // namespace libscratchcpp

test/blocks/motion_blocks_test.cpp

@@ -1941,3 +1941,41 @@ TEST_F(MotionBlocksTest, XPosition)
         ASSERT_EQ(Value(list->data()[0]).toDouble(), 0);
     }
 }
+
+TEST_F(MotionBlocksTest, YPosition)
+{
+    {
+        auto sprite = std::make_shared<Sprite>();
+        ScriptBuilder builder(m_extension.get(), m_engine, sprite);
+
+        builder.addBlock("motion_yposition");
+        builder.captureBlockReturnValue();
+        builder.build();
+
+        sprite->setX(5.2);
+        sprite->setY(-0.25);
+        sprite->setDirection(-61.42);
+        builder.run();
+
+        List *list = builder.capturedValues();
+        ASSERT_EQ(list->size(), 1);
+        ASSERT_EQ(Value(list->data()[0]).toDouble(), -0.25);
+    }
+
+    m_engine->clear();
+
+    {
+        auto stage = std::make_shared<Stage>();
+        ScriptBuilder builder(m_extension.get(), m_engine, stage);
+
+        builder.addBlock("motion_yposition");
+        builder.captureBlockReturnValue();
+
+        builder.build();
+        builder.run();
+
+        List *list = builder.capturedValues();
+        ASSERT_EQ(list->size(), 1);
+        ASSERT_EQ(Value(list->data()[0]).toDouble(), 0);
+    }
+}