C++ View::setSize方法代码示例

void EffectsHandler::Update(float elapsed, sf::View &view, sf::RenderWindow &rw)
{
    if (effectsList.empty())
    {
        return;
    }
    
    for (std::list<Effect>::iterator it = effectsList.begin(); it != effectsList.end(); it++)
    {
        switch (*it)
        {
            case ZoomIn:
                if (view.getSize().x > rw.getSize().x/2)
                {
                    view.setSize(view.getSize().x-(ZOOM_SPEED_X*elapsed), view.getSize().y-(ZOOM_SPEED_Y*elapsed));
                    view.setCenter(view.getCenter().x, view.getCenter().y-(ZOOM_POS_ABOVE_MIDDLE*elapsed));
                }
                else effectsList.erase(it++);
                break;
                
            case ZoomOut:
                if (view.getSize().x <= rw.getDefaultView().getSize().x &&
                    view.getSize().y <= rw.getDefaultView().getSize().y)	//seems silly to take &window just for getdefaultview.
                {
                    view.setSize(view.getSize().x+(ZOOM_SPEED_X*elapsed), view.getSize().y+(ZOOM_SPEED_Y*elapsed));
                    view.setCenter(view.getCenter().x, view.getCenter().y+(ZOOM_POS_ABOVE_MIDDLE*elapsed));
                }
                else
                {
                    effectsList.erase(it++);
                    view = rw.getDefaultView();
                }
                break;
                
            case Pause:
                totalelapsed += elapsed;
                if (totalelapsed > 1.0f)
                {
                    effectsList.erase(it++);
                    totalelapsed = 0;
                }
                break;
                
            default:
                break;
        }
    }
}

void set_up(sf::RenderWindow& window, sf::View& view, sf::Text& winner, std::list<Cycle*>& player)
{
	sf::Vector2u size = window.getSize();
	if (size.x * 3 < size.y * 4)
	{
		view.setSize(v2f(800, (800.f * size.y) / size.x));
		window.setView(view);
	}
	else if (size.x * 3 > size.y * 4)
	{
		view.setSize(v2f((600.f * size.x) / size.y, 600.f));
		window.setView(view);
	}
	for (auto p : player)
		p->set_text_pos(view.getCenter());
	winner.setPosition(view.getCenter());
}

int main(int argc, char** argv)
{
	fcnt = 0;
	speed = 0.5;
	gen = 1;
	evolution_rate = 10;
	counter = 300;
	bestavg = 0;
	decline_counter = 0;
	srand(time(0));
	camera.setSize(800,600);
	camera.setCenter(AREA_W/2,AREA_H/2);
	sf::ContextSettings settings;
	settings.antialiasingLevel = 8;
	window = new sf::RenderWindow(sf::VideoMode(SCREEN_W,SCREEN_H),"Evolution 0.3",sf::Style::Default,settings);
	window->setFramerateLimit(60);
	window->setView(camera);
	bg.setOutlineColor(sf::Color::Cyan);
	bg.setOutlineThickness(4.f);
	bg.setFillColor(sf::Color(51,153,153));
	sf::CircleShape* tmp;
	tmp = new sf::CircleShape(15.f,5);
	tmp->setOutlineColor(sf::Color::Red);
	tmp->setFillColor(sf::Color(75,75,75));
	tmp->setOutlineThickness(2.f);
	tmp->setOrigin(tmp->getLocalBounds().width/2,tmp->getLocalBounds().height/2);
	fToken = tmp;
	sf::Font font;
	font.loadFromFile("revalia.ttf");
	text = new sf::Text();
	text->setFont(font);
	text->setCharacterSize(15.f);
	text->setColor(sf::Color::White);
	vpop = new VectorPopulation();
	vpop->setMutationScale(current_mutation_rate);
	for(int i = 0; i<CREATURE_CAP; i++) {
		creatures.push_back(std::shared_ptr<Creature>(new Creature(4,2,1,6)));
		creatures.back()->setPos(sf::Vector2f(10 + rand() % (AREA_W-20), 10 + rand() % (AREA_H-20)));
		creatures.back()->areaSize(AREA_W,AREA_H);
		creatures.back()->setSpeed(3);
	}
	for(int i = 0; i<FOOD_CAP; i++) {
		food.push_back(sf::Vector2f(20 + rand() % (AREA_W-40), 10 + rand() % (AREA_H-20)));
	}

	while(update()) {
		render();
	}
	return 0;
}

bool handleEvents(sf::Window& window, sf::View& view) {
	sf::Event event;
	bool continueRunning = true;

	while (window.pollEvent(event)) {
		if (event.type == sf::Event::Closed) {
			continueRunning = false;
		}
		if (event.type == sf::Event::Resized) {
			view.setSize(event.size.width, event.size.height);
		}
	}

	return continueRunning;
}

bool handleResize(void){
    
    bool limitWindowSize = true;
    int minWindowSize = 71, smallSide;
    
    if ( (limitWindowSize) && (event.size.height < minWindowSize) )
    {
        event.size.height = minWindowSize;
        window.setSize( sf::Vector2u(event.size.width, event.size.height) );
    }
    
    view.setSize(event.size.width, event.size.height);
    
    if (event.size.width <= event.size.height)
    {
        view.zoom(1.0 * InitWinX / event.size.width);
    }
    else
    {
        view.zoom(1.0 * InitWinY / event.size.height);
    }

    window.setView(view);
}

void setViewRect(sf::View& view, sf::FloatRect const& newRect)
{
    view.setCenter(center(newRect));
    view.setSize(newRect.width, newRect.height);
}

int main()
{
	deltaTime = 0;
	sfg::SFGUI sfgui;

	// map sprite
	sf::Texture map_texture;
	sf::Sprite map_sprite;
	map_texture.loadFromFile("resources/map.png");
	map_sprite.setTexture(map_texture);

	// window
	window.create(sf::VideoMode(WINDOW_WIDTH, WINDOW_HEIGHT, 32), "Runestone");
	view.setSize(sf::Vector2f(WINDOW_WIDTH, WINDOW_HEIGHT));
	view.setCenter(sf::Vector2f(0, 0));
	window.setView(view);

	// timer
	sf::Clock clock;

	// thor actions
	thor::Action quit(sf::Event::Closed);
	thor::Action left(sf::Keyboard::A, thor::Action::Hold);
	thor::Action right(sf::Keyboard::D, thor::Action::Hold);
	thor::Action up(sf::Keyboard::W, thor::Action::Hold);
	thor::Action down(sf::Keyboard::S, thor::Action::Hold);
	thor::Action mouse_down(sf::Mouse::Left, thor::Action::PressOnce);
	thor::Action mouse_up(sf::Mouse::Left, thor::Action::ReleaseOnce);

	// thor action map
	thor::ActionMap<std::string> action_map;
	action_map["quit"] = quit;
	action_map["left"] = left;
	action_map["right"] = right;
	action_map["up"] = up;
	action_map["down"] = down;
	action_map["mouse_down"] = mouse_down;
	action_map["mouse_up"] = mouse_up;
	thor::ActionMap<std::string>::CallbackSystem action_callbacks;
	action_callbacks.connect("quit", &OnQuit);
	action_callbacks.connect("left", &OnLeft);
	action_callbacks.connect("right", &OnRight);
	action_callbacks.connect("up", &OnUp);
	action_callbacks.connect("down", &OnDown);
	action_callbacks.connect("mouse_down", &OnMouseDown);
	action_callbacks.connect("mouse_up", &OnMouseUp);

	// thor particles
	sf::Texture particleTexture;
	particleTexture.loadFromFile("Media/particle.png");
	emitter.setEmissionRate(100.0f);
	emitter.setParticleLifetime(sf::seconds(1.0f));

	particle_system.setTexture(particleTexture);

	// sfgui
	auto sfgui_window = sfg::Window::Create();
	sfgui_window->SetTitle("Runestones: ");
	auto rune_one = sfg::Button::Create("Rune One");
	rune_one->GetSignal(sfg::Button::OnMouseLeftPress).Connect(std::bind(&OnRuneOne));
	rune_one->GetSignal(sfg::Button::OnMouseLeftPress).Connect(std::bind(&OnButtonClicked));
	auto rune_two = sfg::Button::Create("Rune Two");
	rune_two->GetSignal(sfg::Button::OnMouseLeftPress).Connect(std::bind(&OnRuneTwo));
	rune_two->GetSignal(sfg::Button::OnMouseLeftPress).Connect(std::bind(&OnButtonClicked));
	auto rune_three = sfg::Button::Create("Rune Three");
	rune_three->GetSignal(sfg::Button::OnMouseLeftPress).Connect(std::bind(&OnRuneThree));
	rune_three->GetSignal(sfg::Button::OnMouseLeftPress).Connect(std::bind(&OnButtonClicked));
	auto rune_four = sfg::Button::Create("Rune Four");
	rune_four->GetSignal(sfg::Button::OnMouseLeftPress).Connect(std::bind(&OnRuneFour));
	rune_four->GetSignal(sfg::Button::OnMouseLeftPress).Connect(std::bind(&OnButtonClicked));
	auto hbox = sfg::Box::Create(sfg::Box::Orientation::HORIZONTAL, 4.0f);
	hbox->Pack(rune_one);
	hbox->Pack(rune_two);
	hbox->Pack(rune_three);
	hbox->Pack(rune_four);
	sfgui_window->Add(hbox);
	sfgui_window->SetStyle(!sfg::Window::Style::RESIZE);
	sfgui_window->SetPosition(sf::Vector2f((WINDOW_WIDTH / 2.0f) -
		(sfgui_window->GetAllocation().width / 2.0f), WINDOW_HEIGHT - sfgui_window->GetAllocation().height));

	// tileset
	sf::Texture tileTexture;
	tileTexture.loadFromFile("resources/tiles.png");
	rf::TileMap tileMap(4, 8);
	tileMap.setTexture(tileTexture);
	int layout[4][8] = 
	{
		{-1, -1, -1, 1, 1, -1, -1, -1},
		{1,1,1,1,1,1,1,1},
		{-1,-1,1,1,1,1,-1,-1},
		{1,1,1,1,1,1,1,1}
	};

	for (size_t i = 0; i < 4; i++)
	{
		for (size_t j = 0; j < 8; j++)
		{
			tileMap.setTile(layout[i][j], i, j);
		}
	}
//.........这里部分代码省略.........

bool update()
{
	sf::Event event;
	while(window->pollEvent(event)) {
		switch (event.type) {
		case sf::Event::Closed:
			return false;
		case sf::Event::KeyPressed:
			switch(event.key.code) {
			case sf::Keyboard::Up:
				camera.move(0,-1);
				break;
			case sf::Keyboard::Down:
				camera.move(0,1);
				std::cout << camera.getCenter().x;
				break;
			case sf::Keyboard::Left:
				camera.move(-1,0);
				break;
			case sf::Keyboard::Right:
				camera.move(1,0);
				break;
			case sf::Keyboard::F1:
				for(int i = 0; i<10; i++) {
					updateCreatures();
				}
				break;
			case sf::Keyboard::F2:
				for(int i = 0; i<100; i++) {
					updateCreatures();
				}
				break;
			case sf::Keyboard::F3:
				fastForward(10);
				break;
			case sf::Keyboard::F4:
				fastForward(50);
				break;
			}
			break;
		case sf::Event::MouseMoved:
			if(sf::Mouse::isButtonPressed(sf::Mouse::Button::Left)) {
				camera.move(mousepos-window->mapPixelToCoords(sf::Mouse::getPosition(),camera));
			}
			mousepos = window->mapPixelToCoords(sf::Mouse::getPosition(),camera);
			break;
		case sf::Event::MouseWheelMoved:
			if(event.mouseWheel.delta>0) {
				camera.zoom(1.15);
			} else if(event.mouseWheel.delta<0) {
				camera.zoom(0.85);
			}
			break;
		case sf::Event::MouseButtonPressed:
			if(mouseclock.getElapsedTime().asMilliseconds()<333) {
				auto center = window->mapPixelToCoords(sf::Vector2i(event.mouseButton.x,event.mouseButton.y),camera);
				camera.setCenter(center);
				camera.setSize(sf::Vector2f(SCREEN_W,SCREEN_H));
			}
			prev_click = mouseclock.restart();
			break;
		}
	}
	double ftest = 0;
	avg = 0;
	for(auto& creature: creatures) {
		creature->foodPool(food);
		creature->update();
		for(auto fd = food.begin(); fd<food.end(); fd++) {
			if(distance(creature->getPos(),*fd)<15) {
				fd = food.erase(fd);
				creature->increaseFitness(1.f);
			}
		}
		avg += creature->getFitness();
		if(creature->getFitness()>ftest) {
			ftest = creature->getFitness();
		}
	}
	pavg = avg;
	avg = avg/creatures.size();
	if(avg>bestavg) {
		best_so_far = vpop->getPopulationRef();
	} else if(avg < bestavg*0.85) {
		vpop->revertPopulation(best_so_far);
	}

	while(food.size()<FOOD_CAP) {
		food.push_back(sf::Vector2f(20 + rand() % (AREA_W-40), 10 + rand() % (AREA_H-20)));
	}

	if(counter>1) {
		counter--;
	} else {
		updateCreatures();
		counter = 60*evolution_rate;
		std::cout << "Generation: " << gen++;
		std::cout << " fittest: " << ftest;
		std::cout << " average: " << avg << std::endl;
	}
//.........这里部分代码省略.........

void viewSetRect(sf::View &view, sf::IntRect &rect) {
    sf::Vector2i size (rect.width, rect.height);
    sf::Vector2i center (rect.left + rect.width / 2, rect.top + rect.height / 2);
    view.setCenter((sf::Vector2f) center);
    view.setSize((sf::Vector2f) size);
}