axmol/tests/cpp-tests/Classes/Box2DTestBed/Box2DTestBed.cpp

/****************************************************************************
 * Copyright (c) 2021 @aismann; Peter Eismann, Germany; dreifrankensoft

 http://www.cocos2d-x.org

 Permission is hereby granted, free of charge, to any person obtaining a copy
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 The above copyright notice and this permission notice shall be included in
 all copies or substantial portions of the Software.

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 AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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#include "platform/CCPlatformConfig.h"
#include "Box2DTestBed.h"
#include "extensions/cocos-ext.h"
#include "tests/test.h"
#include "tests/settings.h"
#include "ImGuiEXT/CCImGuiEXT.h"

USING_NS_CC;
USING_NS_CC_EXT;

enum {
	kTagParentNode = 1,
};



#define kAccelerometerFrequency 30
#define FRAMES_BETWEEN_PRESSES_FOR_DOUBLE_CLICK 10


#define PTM_RATIO 32

Settings settings;

cocos2d::Label* labelDebugDraw;

enum
{
	kTagBox2DNode,
};


TestEntry g_testEntries[MAX_TESTS] = { {nullptr} };
int g_testCount = 0;

int RegisterTest(const char* category, const char* name, TestCreateFcn* fcn)
{
	int index = g_testCount;
	if (index < MAX_TESTS)
	{
		g_testEntries[index] = { category, name, fcn };
		++g_testCount;
		return index;
	}

	return -1;
}

Box2DTestBedTests::Box2DTestBedTests()
{
	for (int entryId = 0; entryId < g_testCount; ++entryId)
	{
		addTestCase(g_testEntries[entryId].name, [entryId]() {
			return Box2DTestBed::createWithEntryID(entryId);
			});
	}
}

//------------------------------------------------------------------
//
// Box2dTestBed
//
//------------------------------------------------------------------

Box2DTestBed::Box2DTestBed()
{
}

Box2DTestBed::~Box2DTestBed()
{
	Layer::_eventDispatcher->removeEventListener(_touchListener);
}

Box2DTestBed* Box2DTestBed::createWithEntryID(int entryId)
{
	auto layer = new (std::nothrow) Box2DTestBed();
	layer->initWithEntryID(entryId);
//	layer->autorelease();

	return layer;
}

bool Box2DTestBed::initWithEntryID(int entryId)
{
	if (!TestCase::init())
	{
		return false;
	}
	auto director = Director::getInstance();
	Vec2 visibleOrigin = director->getVisibleOrigin();
	Size visibleSize = director->getVisibleSize();

	m_entryID = entryId;

	m_entry = g_testEntries + entryId;
	m_test = m_entry->createFcn();

	debugDrawNode = g_debugDraw.GetDrawNode();
	m_test->debugDrawNode = g_debugDraw.GetDrawNode();
	m_test->g_debugDrawTestBed = g_debugDraw;

	TestCase::addChild(debugDrawNode, 100);
	//	drawBox2D->setOpacity(150);

	// init physics
	this->initPhysics();


	auto label = Label::createWithTTF(m_entry->name, "fonts/arial.ttf", 28);
	TestCase::addChild(label, 1);
	label->setPosition(visibleOrigin.x + visibleSize.width / 2, visibleOrigin.y + visibleSize.height - 50);

	// Adds touch event listener
	_touchListener = EventListenerTouchOneByOne::create();
	_touchListener->setSwallowTouches(true);
	_touchListener->onTouchBegan = CC_CALLBACK_2(Box2DTestBed::onTouchBegan, this);
	_touchListener->onTouchMoved = CC_CALLBACK_2(Box2DTestBed::onTouchMoved, this);
	_touchListener->onTouchEnded = CC_CALLBACK_2(Box2DTestBed::onTouchEnded, this);
	TestCase::_eventDispatcher->addEventListenerWithFixedPriority(_touchListener, -10);

	// Adds Keyboard event listener
	_keyboardListener = EventListenerKeyboard::create();
	_keyboardListener->onKeyPressed = CC_CALLBACK_2(Box2DTestBed::onKeyPressed, this);
	_keyboardListener->onKeyReleased = CC_CALLBACK_2(Box2DTestBed::onKeyReleased, this);
	TestCase::_eventDispatcher->addEventListenerWithFixedPriority(_keyboardListener, -11);


	// Demo messageString
	labelDebugDraw = Label::createWithTTF("TEST", "fonts/Marker Felt.ttf", 8.0f);
	labelDebugDraw->setAnchorPoint(Vec2(0, 0));
	labelDebugDraw->setPosition(VisibleRect::left().x, VisibleRect::top().y - 20);
	labelDebugDraw->setColor(Color3B::WHITE);
	TestCase::addChild(labelDebugDraw, 100);

	TestCase::scheduleUpdate();

	return true;
}

bool Box2DTestBed::onTouchBegan(Touch* touch, Event* event)
{
	auto location = touch->getLocation() - g_debugDraw.debugNodeOffset;
	b2Vec2 pos = { location.x / g_debugDraw.mRatio, location.y / g_debugDraw.mRatio };
	return m_test->MouseDown(pos);
}

void Box2DTestBed::onTouchMoved(Touch* touch, Event* event)
{
	auto location = touch->getLocation() - g_debugDraw.debugNodeOffset;
	b2Vec2 pos = { location.x / g_debugDraw.mRatio, location.y / g_debugDraw.mRatio };

	m_test->MouseMove(pos);
}

void Box2DTestBed::onTouchEnded(Touch* touch, Event* event)
{
	auto location = touch->getLocation() - g_debugDraw.debugNodeOffset;
	b2Vec2 pos = { location.x / g_debugDraw.mRatio, location.y / g_debugDraw.mRatio };

	m_test->MouseUp(pos);
}

void Box2DTestBed::onKeyPressed(EventKeyboard::KeyCode code, Event* event)
{
	log("Box2dView:onKeyPressed, keycode: %d", static_cast<int>(code));
	m_test->Keyboard((static_cast<int>(code) - 59));

}

void Box2DTestBed::onKeyReleased(EventKeyboard::KeyCode code, Event* event)
{
	log("onKeyReleased, keycode: %d", static_cast<int>(code));
	m_test->Keyboard((static_cast<int>(code) - 59));

}

void Box2DTestBed::onEnter()
{
	Scene::onEnter();
	ImGuiEXT::getInstance()->addFont(FileUtils::getInstance()->fullPathForFilename("fonts/arial.ttf"));
	ImGuiEXT::getInstance()->addRenderLoop("#im01", CC_CALLBACK_0(Box2DTestBed::onDrawImGui, this), this);
}
void Box2DTestBed::onExit()
{
	Scene::onExit();
	ImGuiEXT::getInstance()->removeRenderLoop("#im01");
}

void Box2DTestBed::update(float dt)
{
	// Debug draw
	debugDrawNode->clear();
	m_test->Step(settings);
	m_test->m_world->DebugDraw();
}

void Box2DTestBed::initPhysics()
{
	uint32 flags = 0;
	flags += 1 * b2Draw::e_shapeBit;
	flags += 1 * b2Draw::e_jointBit;
	flags += 0 * b2Draw::e_aabbBit;
	flags += 0 * b2Draw::e_centerOfMassBit;
	g_debugDraw.SetFlags(flags);
	g_debugDraw.mRatio = PTM_RATIO / 4;
	m_test->m_world->SetDebugDraw(&g_debugDraw);
	m_test->g_debugDraw = g_debugDraw;
	g_debugDraw.debugNodeOffset = { 250, 70 };
	settings.m_hertz = 60;
}

void Box2DTestBed::onDrawImGui()
{
	m_test->UpdateUI();
}