每次我运行它说的代码
Vector subscript OUT of range.
我看过关于“stackoverflow”的其他 SFML vector 问题,但没有一个能回答我的问题或有效。我想做的是:
vector<sf::Sprite> snake_part;
sf::Sprite sprite;
for (int i = 0; i <= 10; --i) {
snake_part.push_back(sprite);
cout << "Vector size : " << snake_part.size() << endl;
snake_part[i].setTexture(Snake_Part_Texture);
if (i > 0) {
x1[i] -= 10;
}
}
这是不起作用的代码部分。
输出:
Vector size : 1
Vector size : 2
它应该数到“10”,但由于某种原因停在“2”,并且还出现“vector 下标超出范围”错误。
完整代码:
#include <SFML/Graphics.hpp>
#include <iostream>
#include <vector>
using namespace std;
int main() {
//=========================================================
// Coordinates
float y = 330; float x = 150;
float x1[10]; x1[0] = x;
float y1[10]; y1[0] = y;
// Texture
sf::Texture floorText;
if (!floorText.loadFromFile("Floor_Snake_SFML.png")) {
cout << "Floor_Snake_SFML.COULD_NOT_LOAD: [Error]" << endl;
}
sf::Texture Snake_Part_Texture;
if (!Snake_Part_Texture.loadFromFile("Snake_Part_Sprite.png")) {
cout << "Snake_Part_Texture.COULD_NOT_LOAD: [Error]" << endl;
}
// Sprite_floor
sf::Sprite floor;
floor.setTexture(floorText);
floor.setPosition(0, 320);
// vector <sprite> -- (snake)
vector<sf::Sprite> snake_part;
sf::Sprite sprite;
for (int i = 0; i <= 10; --i) {
snake_part.push_back(sprite);
cout << "Vector size : " << snake_part.size() << endl;
snake_part[i].setTexture(Snake_Part_Texture);
if (i > 0) {
x1[i] -= 10;
}
}
//=========================================================
sf::RenderWindow window(sf::VideoMode(640, 480), "<snake>");
while (window.isOpen()) {
sf::Event event;
while (window.pollEvent(event)) {
switch (event.type) {
// Close Window
case sf::Event::Closed:
window.close();
break;
// Do [x] if KeyPressed-
case sf::Event::KeyPressed:
switch (event.key.code) {
// [A] -pressed-
case sf::Keyboard::A:
for (int j = 1; j <= 10; j++) {
x1[j] = x1[j - 1]; y1[j] = y1[j - 1];
}
x1[0] -= 10;
for (int k = 1; k <= 10; k++) {
snake_part[k].setPosition(x1[k], y1[k]);
}
break;
// [D] -pressed-
case sf::Keyboard::D:
break;
// [Space] -pressed-
case sf::Keyboard::Space:
break;
}
break;
}
}
window.clear(); // ===============================
window.draw(floor);
window.draw(snake_part[0]);
window.display(); // ===============================
}
return 0;
}
如果您想要更详细的错误和程序概要,请发表评论,也在此先感谢,如果有人知道更好的方法而不是 Vector 来创建 10 个 Sprites 而无需执行此操作 10 次:
sf::Sprite sprite;
sprite.setTexture(texture);
sprite.setTextureRect(sf::IntRect(0, 0, 10, 10));
float x = 320, y = 240;
sprite.setPosition(x, y);
那我将不胜感激。
-提前致谢。
最佳答案
错误很可能来自这一行:
for (int i = 0; i <= 10; --i)
我不知道你打算用那行做什么,但很可能它应该是 ++i
而不是 --i
。
关于c++ - 尝试将 vector 与 SFML 一起使用,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/28654567/