今天我开始编写我的第一个 SFML 程序,它应该是一个 Snake 游戏,一切进展顺利,直到我开始制作二维类数组,它应该保存每个图块的信息。一些奇怪的事情开始发生:程序编译,并在我尝试将数字流式传输到字符串时崩溃,即使在编写数组代码之前该位工作......我也尝试一点一点地注释掉所有内容得到了更奇怪的结果...
#include <SFML/Graphics.hpp>
#include <iostream>
#include <stdio.h>
#include <string>
#include <sstream>
#include <windows.h>
int main(){
char KeyPressed;
int angle = 0;
float FPS;
sf::Clock Clock;
std::ostringstream oss;
sf::String sFPS;
sf::RenderWindow window(sf::VideoMode(510,510),"Snake Prototype");
window.display();
class Tile {
public:
unsigned int x;
unsigned int y;
unsigned char state;
unsigned char lenght;
sf::RectangleShape make(){
if(state == 1){
sf::RectangleShape rect(sf::Vector2f(15, 15));
rect.setPosition(x, y);
rect.setFillColor(sf::Color(220, 40, 140));
std::cout<< "Rendering.. State: "<< (int)state<<std::endl; return rect;
}
}
};
Tile tileArray[30][30];
int i = 1;
int t = 1;
while(t <= 30){
while(i <= 30){
tileArray[i][t].x = i;
tileArray[i][t].y = t;
std::cout<<"x: " << tileArray[i][t].x << " y: " << tileArray[i][t].y <<std::endl;
i++;
}
i = 1;
t++;
}
t = 0;
i = 0;
std::cout<<"LoopOver"<<std::endl;
while(window.isOpen()){
window.clear(); // If this is commented out the array doesn't initialise correctly, No Idea why
sf::Event event;
while(window.pollEvent(event)){
if(event.type == sf::Event::Closed){window.close();}
if((event.type == sf::Event::KeyPressed)&&(event.key.code == sf::Keyboard::Escape)){window.close();}
if((event.type == sf::Event::KeyPressed)&&(event.key.code == sf::Keyboard::Left)){KeyPressed = 4;}
if((event.type == sf::Event::KeyPressed)&&(event.key.code == sf::Keyboard::Up)){KeyPressed = 1;}
if((event.type == sf::Event::KeyPressed)&&(event.key.code == sf::Keyboard::Right)){KeyPressed = 2;}
if((event.type == sf::Event::KeyPressed)&&(event.key.code == sf::Keyboard::Down)){KeyPressed = 3;}
}
std::cout<<"Polling loop ended"<<std::endl;
// FPS COUNT
window.display();
FPS = 1/Clock.restart().asSeconds();
std::cout<<"Time gotten"<<std::endl; // random cout's to know, up to which point the program actually runs
oss<< "Snake Prototype "<<"FPS: "<<(int)FPS;
std::cout<<"TitleSet"<<std::endl;
sFPS = oss.str(); // this seems to be the problem, even though it seems like legal c++ code
std::cout<<"String written"<<std::endl;
oss.str("");
window.setTitle(sFPS);
std::cout<<"MainLoopover"<<std::endl;
}
return 1;
}
我试图评论那些我认为会导致问题的位,但无论如何,有人能告诉我为什么这个程序会崩溃吗?