SFML 游戏中的向量下标超出范围

Question

我正在开发一个游戏作为我的游戏开发课程的项目。它使用向量在屏幕顶部生成敌人并跑下，并创建由玩家和老板发射的“子弹”。在为他的子弹添加老板和代码之后，以前的工作代码现在抛出一个向量下标超出范围错误。这个错误总是在击中敌人后立即抛出，并且在引入 Boss 之前不会发生。

            bullets[i].shape.move(bullets[i].currVelocity);

            //Bullet Removal
            if (bullets[i].shape.getPosition().x < 0 || bullets[i].shape.getPosition().x > window.getSize().x
                || bullets[i].shape.getPosition().y < 0 || bullets[i].shape.getPosition().y > window.getSize().y) {
                bullets.erase(bullets.begin() + i);
            }
            else {
                //Collision Code
                for (size_t k = 0; k < enemies.size(); k++) {
                    if (bullets[i].shape.getGlobalBounds().intersects(enemies[k].getGlobalBounds())) {
                        bullets.erase(bullets.begin() + i);
                        enemies.erase(enemies.begin() + k);
                        score = score + 1;
                        fiveScore = fiveScore + 1;
                        std::cout << "Score: " << score << std::endl;
                        hitSound.play();
                        if (fiveScore == 5) {
                            fiveScore = 0;
                            //scoreUpSound.play();
                        }
                        if (score >= 100 && bossSpawned == false) {
                            bossSpawned = true;
                            boss.setPosition(250.0f, 50.0f);
                        }
                        break;
                    }
                }
                if (bullets[i].shape.getGlobalBounds().intersects(boss.getGlobalBounds())) {
                    bullets.erase(bullets.begin() + i);
                    hitSound.play();
                    bossHP = bossHP - 1;
                    if (bossHP <= 0) {
                        bossSpawned = false;
                        boss.setPosition(3214.0f, 4322.0f);
                        text.setString("You have completed your quest." "\n" "The warlock is slain and the realm is" "\n" "safe, yet as life returns to the kingdom" "\n" "you are dissatisfied. Your brother and" "\n" "lover are both deceased and" "\n" "you feel only death will heal your pain.");
                        text.setPosition(25.0f, 150.0f);
                        window.clear();
                        window.draw(text);
                        window.display();
                        Sleep(9000);
                        return 0;
                    }
                    break;
                }
            }
        }

这是玩家子弹碰撞的代码。

            b2.shape.setPosition(bossCenter);
            b2.currVelocity = bossAimDirNorm * b2.maxSpeed;

            bossbullets.push_back(BossBullet(b2));
        }

        for (size_t z = 0; z < bossbullets.size(); z++) {
            bossbullets[z].shape.move(bossbullets[z].currVelocity);

            //BossBullet Removal
            if (bossbullets[z].shape.getPosition().x < 0 || bossbullets[z].shape.getPosition().x > window.getSize().x
                || bossbullets[z].shape.getPosition().y < 0 || bossbullets[z].shape.getPosition().y > window.getSize().y) {
                bossbullets.erase(bossbullets.begin() + z);
            }
            else {
                //Collision Code
                if (bossbullets[z].shape.getGlobalBounds().intersects(player.getGlobalBounds())) {
                        bossbullets.erase(bossbullets.begin() + z);
                        playerDead = true;
                        text.setString("You have failed your quest.");
                        text.setPosition(150.0f, 150.0f);
                        window.clear();
                        window.draw(text);
                        window.display();
                        Sleep(5000);
                        return 0;
                }
            }
        }

这是boss子弹碰撞的代码。任何关于可能出错的帮助甚至想法都会有所帮助。恢复到我添加boss之前是我目前找到的唯一解决方案。

Answer 1

您在循环遍历矢量时正在擦除矢量。这会改变向量的大小，这通常是错误的来源。

查看Remove elements of a vector inside the loop 的替代方法。