Performance 让SFML Snake游戏对按键反应更灵敏? 我找到了一个SFML C++游戏,我一直在玩它,改变了一些东西,但是我无法弄清楚的是,如何用箭头键使它更平滑/响应。现在它正在使用enum方向{Up,Down,Left,Right}带有 while (window.isOpen()) { sf::Vector2f lastPosition(snakeBody[0].getPosition().x, snakeBody[0].getPosition().y); // Event sf::Event event; while (window.pollEvent(event)) { //..... if (event.type == sf::Event::KeyPressed && event.key.code == sf::Keyboard::Return) { //clock.restart; if (!currentlyPlaying) currentlyPlaying = true; move = Down; New_Game(snakeBody, window_width, window_height, engine, apple, score, scoreText, lowBounds); mode = 1; moveClock.restart(); //start game } if(inputClock.getElapsedTime().asSeconds() >= 0.07) { if(event.key.code == sf::Keyboard::Up && move != Down) move = Up; inputClock.restart(); if(event.key.code == sf::Keyboard::Down && move != Up) move = Down; inputClock.restart(); if(event.key.code == sf::Keyboard::Left && move != Right) move = Left; inputClock.restart(); if(event.key.code == sf::Keyboard::Right && move != Left) move = Right; inputClock.restart(); } }
现在踢球很令人沮丧,因为我不能像我想的那样准确地移动。是否有一种方法可以使控件更具响应性,或者它是否已经能够像我的硬件一样快速地响应按键 我是OOP和SFML的完全初学者,所以我在理解时钟以及看其他语言的蛇游戏时遇到了一些困难,以便将其翻译成这个。如果需要,我可以发布整个代码 所以我知道这并不漂亮,但下面是全部代码:Performance 让SFML Snake游戏对按键反应更灵敏? 我找到了一个SFML C++游戏,我一直在玩它,改变了一些东西,但是我无法弄清楚的是,如何用箭头键使它更平滑/响应。现在它正在使用enum方向{Up,Down,Left,Right}带有 while (window.isOpen()) { sf::Vector2f lastPosition(snakeBody[0].getPosition().x, snakeBody[0].getPosition().y); // Event sf::Event event; while (window.pollEvent(event)) { //..... if (event.type == sf::Event::KeyPressed && event.key.code == sf::Keyboard::Return) { //clock.restart; if (!currentlyPlaying) currentlyPlaying = true; move = Down; New_Game(snakeBody, window_width, window_height, engine, apple, score, scoreText, lowBounds); mode = 1; moveClock.restart(); //start game } if(inputClock.getElapsedTime().asSeconds() >= 0.07) { if(event.key.code == sf::Keyboard::Up && move != Down) move = Up; inputClock.restart(); if(event.key.code == sf::Keyboard::Down && move != Up) move = Down; inputClock.restart(); if(event.key.code == sf::Keyboard::Left && move != Right) move = Left; inputClock.restart(); if(event.key.code == sf::Keyboard::Right && move != Left) move = Right; inputClock.restart(); } },performance,c++11,keyboard,sfml,Performance,C++11,Keyboard,Sfml,现在踢球很令人沮丧,因为我不能像我想的那样准确地移动。是否有一种方法可以使控件更具响应性,或者它是否已经能够像我的硬件一样快速地响应按键 我是OOP和SFML的完全初学者,所以我在理解时钟以及看其他语言的蛇游戏时遇到了一些困难,以便将其翻译成这个。如果需要,我可以发布整个代码 所以我知道这并不漂亮,但下面是全部代码: #include <iostream> #include <SFML/Graphics.hpp> #include <vector> #incl
#include <iostream>
#include <SFML/Graphics.hpp>
#include <vector>
#include <string>
#include <fstream>
#include <sstream>
// Global directions
enum Direction {Up, Down, Left, Right};
// Reads high scores
void High_Scores(std::vector<int> &top10scores)
{
top10scores.clear();
std::string line;
std::ifstream highscores("highscores.txt");
while (std::getline(highscores, line))
top10scores.push_back(stoi(line));
highscores.close();
}
// Checks new score against high scores
void New_High(std::vector<int> newScores)
{
std::ofstream fileoutput;
fileoutput.open("highscores.txt");
for (int i = 0; i < 10; i++)
fileoutput << newScores[i] << "\n";
fileoutput.close();
}
// Writes over highscores.txt file
int Update_Scores(int &score, std::vector<int> &top10scores)
{
for (int i = 0; i < 10; i++)
{
if (score >= top10scores[i])
{
for (int j = 9; j >= 0+i; j--)
{
top10scores[j] = top10scores[j-1];
}
top10scores[i] = score;
New_High(top10scores);
High_Scores(top10scores);
return i;
}
}
return 11;
}
// Start menu
void Welcome_Screen(sf::RenderWindow &window)
{
sf::Texture texture;
texture.loadFromFile("welcome2.png");
sf::Sprite background(texture);
// Create welcome text
sf::Font font;
if (!font.loadFromFile("bonzai.ttf"))
std::cout << "Can't find the font file 'bonzai.ttf'" << std::endl;
sf::Text text("\n\n\n\n \t\t\t Welcome!\n\t Press 'Enter' to begin.", font, 50);
text.setColor(sf::Color::White);
sf::Text quitText(" 'Esc' to quit", font, 17);
quitText.setColor(sf::Color::Black);
window.clear();
window.draw(background);
window.draw(text);
window.draw(quitText);
window.display();
}
// Basic collision check for apple placement
bool Collision_Detect(std::vector<sf::RectangleShape> &snakeBody, sf::CircleShape &apple)
{
for (int i = 0; i != snakeBody.size(); i++)
{
if (snakeBody[i].getPosition() == apple.getPosition())
return true;
}
return false;
}
// Sets up starting values for game
void New_Game(std::vector<sf::RectangleShape> &snakeBody, int window_width, int window_height,
std::default_random_engine &engine, sf::CircleShape &apple, int score, sf::Text &scoreText,
int lowBounds)
{
score = 0;
scoreText.setString("Score: 0");
snakeBody.clear();
snakeBody.push_back(sf::RectangleShape(sf::Vector2f(20,20))); // one square
snakeBody[0].setPosition(window_width / 2, window_height / 2 - 120);
snakeBody[0].setFillColor(sf::Color(200,255,200));
snakeBody[0].setOutlineThickness(-1);
snakeBody[0].setOutlineColor(sf::Color::Black);
std::uniform_int_distribution<int> xPosition(lowBounds, 39);
auto randX = std::bind(xPosition, std::ref(engine));
std::uniform_int_distribution<int> yPosition(lowBounds, 23); // path length of 20 pixels I think
auto randY = std::bind(yPosition, std::ref(engine));
do
apple.setPosition(randX()*20+10, randY()*20+10);
while (Collision_Detect(snakeBody, apple));
for (int i = 0; i < 2; i++)
{
snakeBody.push_back(sf::RectangleShape(sf::Vector2f(20,20)));
snakeBody[snakeBody.size()-1].setFillColor(sf::Color(100,150,100));
snakeBody[snakeBody.size()-1].setOutlineThickness(-1);
snakeBody[snakeBody.size()-1].setOutlineColor(sf::Color::Black);
snakeBody.back().setPosition(snakeBody.begin()->getPosition().x,
snakeBody.begin()->getPosition().y);
}
}
//Display all blocks of snake
void Draw_Snake(sf::RenderWindow &window, std::vector<sf::RectangleShape> &snakeBody)
{
for (int i = 0; i != snakeBody.size(); i++)
window.draw(snakeBody[i]);
}
// Moves snake's head and tail
void Move_Snake(std::vector<sf::RectangleShape> &snakeBody, sf::Vector2f &lastPosition, int move)
{
switch (move)
{
case Up:
snakeBody[0].move(0, -20);
break;
case Down:
snakeBody[0].move(0, 20);
break;
case Left:
snakeBody[0].move(-20, 0);
break;
case Right:
snakeBody[0].move(20, 0);
break;
default:
break;
}
sf::Vector2f newPosition(lastPosition);
if (snakeBody.size() > 1)
{
for (int i = 1; i != snakeBody.size(); i++)
{
lastPosition = snakeBody[i].getPosition();
snakeBody[i].setPosition(newPosition);
newPosition = lastPosition;
}
}
}
// Apple placement
bool Apple_Placement(int lowBounds, std::default_random_engine &engine,
std::vector<sf::RectangleShape> &snakeBody, sf::CircleShape &apple, sf::Clock &immuneTimer)
{
std::uniform_int_distribution<int> xPosition(lowBounds, 39);
auto randX = std::bind(xPosition, std::ref(engine));
std::uniform_int_distribution<int> yPosition(lowBounds, 23);
auto randY = std::bind(yPosition, std::ref(engine));
if ((apple.getPosition().x == snakeBody[0].getPosition().x + 10) &&
(apple.getPosition().y == snakeBody[0].getPosition().y + 10))
{
// for (int i = 0; i < 2; i++)
// {
snakeBody.push_back(sf::RectangleShape(sf::Vector2f(20,20)));
snakeBody[snakeBody.size()-1].setFillColor(sf::Color(100,150,100));
snakeBody[snakeBody.size()-1].setOutlineThickness(-1);
snakeBody[snakeBody.size()-1].setOutlineColor(sf::Color::Black);
snakeBody.back().setPosition(snakeBody.begin()->getPosition().x, snakeBody.begin()->getPosition().y);
// }
do
apple.setPosition(randX()*20+10, randY()*20+10);
while (Collision_Detect(snakeBody, apple));
immuneTimer.restart();
return true;
}
else
return false;
}
// Checks body collision and out of bounds
bool Snake_Alive(std::vector<sf::RectangleShape> &snakeBody, sf::Clock &immuneTimer)
{
if (snakeBody[0].getPosition().x < 0 || snakeBody[0].getPosition().x > 790
|| snakeBody[0].getPosition().y < 0 || snakeBody[0].getPosition().y > 460)
{
// snakeBody[0].setFillColor(sf::Color::Yellow);
return false;
}
if(immuneTimer.getElapsedTime().asSeconds() >= .15)
{
for (int i = 1; i != snakeBody.size(); i++)
{
if (snakeBody[0].getPosition() == snakeBody[i].getPosition())
{
// snakeBody[i].setFillColor(sf::Color::Yellow);
return false;
}
}
}
return true;
}
int main()
{
int window_width = 800, window_height = 600;
int bitsPerPixel = 24, start = 0, mode = 0, score = 0, difficulty = 2, lowBounds = 0;
std::vector<int> top10scores;
std::vector<sf::RectangleShape> snakeBody;
int move;
bool currentlyPlaying = false;
// Create main window
sf::RenderWindow window(sf::VideoMode(window_width, window_height,
bitsPerPixel), "Snake!", sf::Style::Close);
window.setVerticalSyncEnabled(true);
// Set the icon
sf::Image icon;
if (!icon.loadFromFile("icon.png"))
return EXIT_FAILURE;
window.setIcon(icon.getSize().x, icon.getSize().y, icon.getPixelsPtr());
// Game board
sf::Texture texture;
texture.loadFromFile("grass.png"); //replace with game board
sf::Sprite grass(texture);
// Apple
sf::CircleShape apple(10);
apple.setOutlineThickness(-1); // should be diameter of 20
apple.setOutlineColor(sf::Color::Black);
apple.setFillColor(sf::Color::Red);
apple.setOrigin(apple.getRadius(), apple.getRadius());
// Random generator
std::random_device seed_device;
std::default_random_engine engine(seed_device());
// Clocks
sf::Clock moveClock;
sf::Clock inputClock;
sf::Clock immuneTimer;
// Score box
sf::RectangleShape scoreBox(sf::Vector2f(window_width, window_height - 480));
scoreBox.setFillColor(sf::Color(0,200,0));
scoreBox.setOutlineColor(sf::Color::Black);
scoreBox.setOutlineThickness(-3.f);
scoreBox.setPosition(0, 480);
sf::Font font;
if (!font.loadFromFile("bonzai.ttf"))
std::cout << "Can't find the font file 'bonzai.ttf'" << std::endl;
sf::Text scoreText("Score: ", font, 60);
scoreText.setColor(sf::Color::White);
scoreText.setPosition(314, 497);
sf::Text pauseText("GAME PAUSED", font, 80);
pauseText.setColor(sf::Color::Black);
pauseText.setPosition(174, 185);
sf::Text overText(" GAME OVER", font, 78);
overText.setColor(sf::Color(150,0,0));
overText.setPosition(174, 185);
sf::Text newquitText("Pause: 'P'\nNew game: 'Enter'\nQuit to main menu: 'Q'", font, 20);
newquitText.setColor(sf::Color::Black);
newquitText.setPosition(5, 525);
sf::Text highScoreText("", font, 85);
highScoreText.setColor(sf::Color::Black);
//High scores
High_Scores(top10scores);
if (difficulty == 2)
lowBounds = 0;
New_Game(snakeBody, window_width, window_height, engine, apple, score, scoreText, lowBounds);
// Main game loop
while (window.isOpen())
{
sf::Vector2f lastPosition(snakeBody[0].getPosition().x, snakeBody[0].getPosition().y);
// Event
sf::Event event;
while (window.pollEvent(event))
{
// Welcome screen
if (start <= 1)
{
Welcome_Screen(window);
start++;
}
// Close window: Exit
if (event.type == sf::Event::Closed)
window.close();
// Esc pressed: Exit
if (event.type == sf::Event::KeyPressed && event.key.code
== sf::Keyboard::Escape)
window.close();
// Q pressed: Exit to main menu
if (event.type == sf::Event::KeyPressed && event.key.code
== sf::Keyboard::Q)
{
start = 1;
mode = 0;
}
if (event.type == sf::Event::KeyPressed && event.key.code
== sf::Keyboard::Return)
{
if (!currentlyPlaying)
currentlyPlaying = true;
move = Down;
New_Game(snakeBody, window_width, window_height, engine, apple, score, scoreText, lowBounds);
mode = 1;
score = 0;
moveClock.restart();
inputClock.restart();
immuneTimer.restart();
}
if(event.type == sf::Event::KeyPressed && inputClock.getElapsedTime().asSeconds() >= 0.06) //0.07
{
if(event.type == sf::Event::KeyPressed && event.key.code == sf::Keyboard::Up && move != Down)
{
move = Up;
inputClock.restart();
}
if(event.type == sf::Event::KeyPressed && event.key.code == sf::Keyboard::Down && move != Up)
{
move = Down;
inputClock.restart();
}
if(event.type == sf::Event::KeyPressed && event.key.code == sf::Keyboard::Left && move != Right)
{
move = Left;
inputClock.restart();
}
if(event.key.code == sf::Keyboard::Right && move != Left)
{
move = Right;
inputClock.restart();
}
}
// P pressed: Pause simulation
if (event.type == sf::Event::KeyPressed && event.key.code
== sf::Keyboard::P)
{
if (mode == 1)
{
window.draw(pauseText);
window.display();
}
mode *= -1;
moveClock.restart();
immuneTimer.restart();
inputClock.restart();
}
}
if (mode == 1)
{
window.clear();
window.draw(grass);
window.draw(apple);
Draw_Snake(window, snakeBody);
window.draw(scoreBox);
window.draw(scoreText);
window.draw(newquitText);
if(moveClock.getElapsedTime().asSeconds() >= .075) // change back to 0.09
{
Move_Snake(snakeBody, lastPosition, move);
moveClock.restart();
}
if(Apple_Placement(lowBounds, engine, snakeBody, apple, immuneTimer))
{
if (difficulty == 1)
score += 5;
else if (difficulty == 2)
score += 10;
else
score += 20;
std::string newScore = std::to_string(score);
scoreText.setString("Score: " + newScore);
}
if(!Snake_Alive(snakeBody, immuneTimer))
{
window.draw(overText);
int scorePlacement = Update_Scores(score, top10scores);
if (scorePlacement != 11)
{
std::string newHighText = std::to_string(scorePlacement+1);
highScoreText.setString("#" + newHighText
+ " out of top 10 scores!");
if (scorePlacement == 9)
highScoreText.setPosition(15, 50);
else
highScoreText.setPosition(30, 50);
window.draw(highScoreText);
}
window.display();
mode = 0;
window.display();
}
window.display();
}
}
return EXIT_SUCCESS;
}
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//全球方向
枚举方向{上、下、左、右};
//读高分
无效高分(标准::向量和TOP10分数)
{
排名前10名。清除();
std::字符串行;
std::ifstream highscores(“highscores.txt”);
while(std::getline(高分,行))
得分前10名。推回(stoi(线));
高分。接近();
}
//根据高分检查新分数
void New_High(标准::矢量新闻核心)
{
std::流文件输出;
fileoutput.open(“highscores.txt”);
对于(int i=0;i<10;i++)
fileoutput=0+i;j--)
{
前10大得分[j]=前10大得分[j-1];
}
TOP10分数[i]=分数;
新高(前10名);
高分(前10名);
返回i;
}
}
返回11;
}
//开始菜单
无效欢迎屏幕(sf::渲染窗口和窗口)
{
sf::纹理;
loadFromFile(“welcome2.png”);
雪碧背景(纹理);
//创建欢迎文本
sf::字体;
如果(!font.loadFromFile(“bonzai.ttf”))
std::cout getPosition().y);
}
}
//显示所有的蛇块
虚空绘制_蛇(sf::渲染窗口和窗口,std::向量和蛇体)
{
for(int i=0;i!=snakeBody.size();i++)
窗口绘制(蛇身[i]);
}
//移动蛇的头和尾巴
无效移动(标准::矢量和蛇形体,sf::矢量2F和最后位置,整数移动)
{
开关(移动)
{
个案:
蛇身[0]。移动(0,-20);
打破
按大小写:
蛇身[0]。移动(0,20);
打破
案例左:
蛇身[0]。移动(-20,0);
打破
案例权利:
蛇身[0]。移动(20,0);
打破
违约:
打破
}
sf::矢量2f newPosition(lastPosition);
如果(snakeBody.size()>1)
{
for(int i=1;i!=snakeBody.size();i++)
{
lastPosition=snakeBody[i].getPosition();
蛇体[i].设置位置(新位置);
newPosition=lastPosition;
}
}
}
//苹果种植
布尔苹果位置(整数下限,标准::默认随机引擎和引擎,
std::vector&snakeBody,sf::CircleShape&apple,sf::Clock&immuneTimer)
{
标准:均匀分布(下界,39);
auto randX=std::bind(xPosition,std::ref(引擎));
标准:均匀分布位置(下限,23);
auto randY=std::bind(位置,std::ref(引擎));
if((apple.getPosition().x==snakeBody[0].getPosition().x+10)&&
(apple.getPosition().y==snakeBody[0].getPosition().y+10))
{
//对于(int i=0;i<2;i++)
// {
蛇形体。推回(sf::矩形(sf::Vector2f(20,20));
snakeBody[snakeBody.size()-1].setFillColor(sf::Color(100150100));
snakeBody[snakeBody.size()-1].SetOutlineHickness(-1);
snakeBody[snakeBody.size()-1].setOutlineColor(sf::Color::Black);
snakeBody.back().setPosition(snakeBody.begin()->getPosition().x,snakeBody.begin()->getPosition().y);
// }
做
apple.setPosition(randX()*20+10,randY()*20+10);
而(碰撞检测(蛇身,苹果));
immuneTimer.restart();
返回true;
}
其他的
返回false;
}
//检查身体碰撞和越界
活蹦乱跳的蛇(std::vector&snakeBody,sf::Clock&immuneTimer)
{
如果(蛇身[0].getPosition().x<0 | |蛇身[0].getPosition().x>790
||蛇体[0]。getPosition().y<0 | |蛇体[0]。getPosition().y>460)
{
//蛇体[0].setFillColor(sf::Color::黄色);
返回false;
}
如果(immuneTimer.getElapsedTime().asSeconds()>=.15)
{
for(int i=1;i!=snakeBody.size();i++)
{
如果(蛇身[0].getPosition()==snakeBody[i].getPosition())
{
//蛇体[i].setFillColor(sf::Color::黄色);
返回false;
}
}
}
返回true;
}
int main()
{
内窗宽=800,窗高=600;
int bitsPerPixel=24,开始=0,模式=0,分数=0,难度=2,下限=0;
std::向量TOP10得分;
病媒蛇体;
int-move;
bool currently playing=false;
//创建主窗口
sf::渲染窗口(sf::视频模式(窗口宽度、窗口高度、,
bitsPerPixel),“蛇!”,sf::Style::Close);
window.setVerticalSyncEnabled(真);
//设置图标
sf::图像图标;
如果(!icon.loadFromFile(“icon.png”))
返回退出失败;
setIcon(icon.getSize().x,icon.getSize().y,icon.getPixelsPtr());
//游戏板
sf::纹理;
texture.loadFromFile(“grass.png”);//替换为游戏板
雪碧草(质地);
//苹果
sf::圆形苹果(10);
apple.setOutlineHickness(-1);//直径应为20
苹果色(sf::颜色::黑色);
苹果.setFillColor(sf::Color::红色);
apple.setOrigin(apple.getRadius(),apple.getRadius());
//随机发生器
兰多
if (sf::Keyboard::isKeyPressed(sf::Keyboard::Up)
if (sf::Keyboard::isKeyPressed(sf::Keyboard::Down)
if (sf::Keyboard::isKeyPressed(sf::Keyboard::Left)
if (sf::Keyboard::isKeyPressed(sf::Keyboard::Right)
if(inputClock.getElapsedTime().asSeconds() >= 0.07)