我是一名爱好编程的高中生。我制作免费的东西,并且正在使用 opengl 开发游戏。我需要保存和加载数据,但是当遇到困难时,我做了以下测试来测试我的方法。
保存文件“shiptest”是正确的,但是当我打开使用“shiptest”中的保存数据创建的第二个文件“shipout”时,只有第一行存在。起初我认为我的数组没有加载任何新数据,并且 clear 函数没有摆脱第一个元素。我通过在保存数据后覆盖这些行并观察保存的行毕竟被加载来纠正这个假设。我的新假设是 getline 函数每次调用时只获取第一行;但我不知道如何解决这个问题。
#include <iostream>
#include <string>
#include <fstream>
#include <sstream>
#include <stdio.h>
#include <stdlib.h>
unsigned short int shipPart;
float editShip[256][3];//part ID, x relative, y relative, r,g,b
float activeShip[256][3];
void CLEAR(bool edit)
{
for (int n = 0; n < 256; n++)
{
if (edit)
editShip[n][0] = -1;
else
activeShip[n][0] = -1;
}
}
void saveEdit(std::string name)
{
std::ofstream out;
out.open ("ship" + name + ".txt", std::ofstream::out);
for (int n = 0; n < 256; n++)
{
for (int i = 0; i < 3; i++)
{
if (editShip[n][0] == -1)
break;
out << editShip[n][i] << " ";
}
out << "\n";
}
out.close();
}
void load(std::string name, bool edit)
{
CLEAR(edit);
std::ifstream in;
in.open ("ship" + name + ".txt", std::ifstream::in);
std::string line, buf;
std::stringstream ss;
int i;
for (int n = 0; n < 3; n++)
{
getline(in, line);
ss << line;
i=0;
while (ss >> buf)
{
if (edit)
editShip[n][i] = atof(buf.c_str());
else
activeShip[n][i] = atof(buf.c_str());
i++;
}
}
in.close();
}
int main()
{
for (int n = 0; n < 256; n++)
{
editShip[n][0] = -1;
activeShip[n][0] = -1;
}
editShip[0][0] = 5;
editShip[0][1] = .11;
editShip[0][2] = .22;
editShip[1][0] = 4;
editShip[1][1] = .33;
editShip[1][2] = .44;
editShip[2][0] = 3;
editShip[2][1] = .55;
editShip[2][2] = .66;
saveEdit("test");
editShip[0][0] = 5000;
editShip[0][1] = 8978;
editShip[0][2] = 8888;
load("test",1);
saveEdit("out");
std::cout << "Hello world!" << std::endl;
return 0;
}