我正在为我的学校科学博览会开展一个涉及C ++的项目。我正在以NANORGs的名义进行小型模拟，但这些信息并非真正必要。
我有几个文件，包括main.cpp和bots.h.
我的moveBot（）函数存在问题。我完全不知道如何从成员中添加或减去一个值;无论我尝试什么，它只是将它设置为该数字。
示例。）bots [botID] .y_cord = bots [botID] .y_cord - 1;会使y_cord等于-1。
bot.h：
class Bot
{
public:
int id;
int x_cord;
int y_cord;
int energy;
int mutationLevel;
int magical; //Used for debugging
};
main.cpp（moveBot位于底部）：
// NANORG SIMULATION
// CREATED BY *INSERT NAME HERE* FOR THE SCIENCE FAIR (2013)
// CODED IN C++
// MADE TO RUN ON LINUX
#include <iostream>
#include <string>
#include <stdlib.h>
#include <time.h>
#include <stdio.h>
#include <stdlib.h>
#include <cstdlib>
#include "bot.h"
using namespace std;
int map [39][69]; //2D array x first, then y
int mapBot [39][69]; //If bot is there, 1. If not, 0 This array keeps track if there is a bot in a location
signed int currentTick = 0; //Signed just in case something goes wrong and goes into the -s
int maxTick = 1000000; //Should always stay at 1mil
//signed int totalEnergy = 0; //For some reason, when I add this here, everything breaks.
Bot bots[50];
void setupMap();
void tick();
void updateTickOutput();
void outputMapValue(int x, int y);
void assignBotID();
void setupBot();
void moveBot(int botID);
void mutateBot(int botID, int level, int sT);
void ckLoc(int botIdent);
void reassignLoc(int botID);
int main() {
cout << " ----------------------" << endl;
cout << " NANORG Simulation V1.3.1" << endl;
cout << "Created in C++ by *Insert name here*" << endl;
cout << " ----------------------" << endl << endl;
srand (time(NULL));
setupMap();
assignBotID();
setupBot();
tick();
// mutateBot(5, 2); //Just to test
cout << endl << "X before: " << bots[5].x_cord << " Y before: " << bots[5].y_cord << endl;
moveBot(5);
cout << "X after: " << bots[5].x_cord << " Y after: " << bots[5].y_cord << endl;
return 0;
}
void setupMap(){
// srand (time(NULL)); //Not a good idea to put it here
for(int i = 0; i < 40; i++){
for(int j = 0; j < 70; j++){ // We add one extra (70) so it fills the entire array. Same for above
map[i][j] = rand() % 2 + 1; // 1==normal 2==toxic
}
}
// outputMapValue(5,4); //Debugging purposes
// outputMapValue(7,9);
cout << "Map setup - \033[0;32mSuccessful" << "\033[0m" << endl;
}
void outputMapValue(int x, int y){
cout << "The chunk value at (" << x+1 << ", " << y+1 << ") is: ";
cout << map[x][y]; //Outputting the value of (x,y)
if(map[x][y]==1){ //If (x,y) is == 1, the chunk is fine to eat
cout << " | Chunk is not toxic." << endl;
}
if(map[x][y]==2){
cout << " | Chunk is toxic." << endl;
}
}
void updateTickOutput() {
//cout << "Map Size (x,y): " << " " << mapsizeX << "," << mapsizeY << endl; This function used to just refresh everything, including map size, which really isn't needed.
cout << "Current Tick: " << currentTick << " " << "Max Tick: " << maxTick << endl; //Just outputting currentTick and maxTick
}
void tick() {
while(true){
if(currentTick < maxTick){
currentTick = currentTick + 1;
if(currentTick >= 900000){ //If currentTick is over 900,000: we will begin to output individual ticks. Anything less and we get a seg fault.
// updateTickOutput(); //See above
}
// cout << "tick!"; This was for debugging, before I made the updateTickOutput() function to make sure that the program actually ticked.
}
else if((currentTick = maxTick)){
cout << endl << "Done!" << endl; //Report that we are finished with the simulation.
// assignBotID(); //Make sure every bot has the proper ID. Moved to main()
break; //Kill the loop
}
// updateTickOutput(); //No real need for this, anymore.
}
}
void setupBot(){
srand(time(NULL));
for(int botNumber=0;botNumber <= 50; botNumber++){
// cout << "debug (botNumber): " << botNumber << endl; //Debug feature
bots[botNumber].x_cord = rand() % 39 + 1;
// cout << "debug (bot x cord): " << bots[botNumber].x_cord << endl; //Debug feature
int bufferX = bots[botNumber].x_cord;
bots[botNumber].y_cord = rand() % 69 + 1;
// cout << "debug (bot y cord): " << bots[botNumber].y_cord << endl; //Debug feature
int bufferY = bots[botNumber].y_cord;
if(mapBot[bufferX][bufferY] == 1){
cout << endl <<"A bot already is here!" << endl;
reassignLoc(botNumber);
}
else{
mapBot[bufferX][bufferY] = 1; //Take the bot's cords and make sure everyone knows that a bot is there.
// cout<< "debug (map location):"<<mapBot[bufferX][bufferY] << endl ; Just a nice debug feature
}
// if(botNumber==5){
// cout << "bot 5 assigned"; //I broke this entire function a while back and I used this to test if I was assigning bots correctly.
// }
}
/* cout << endl << "X: " << bots[5].x_cord+1 << endl; //Just some debugging stuff below
cout << "Y: " << bots[5].y_cord+1 << endl;
// cout << "The value at " << mapBot[bots[5].x_cord]<<","<< mapBot[bots[5].y_cord]<<" is: " << mapBot[bots[5].x_cord][bots[5].y_cord]; //This is a very messed up debug feature, but it still works.
cout << endl << "X: " << bots[6].x_cord+1 << endl;
cout << "Y: " << bots[6].y_cord+1 << endl;
cout << mapBot[6][6];
*/
cout << "Bot setup - \033[0;32mSuccessful" << "\033[0m" << endl;
}
void assignBotID(){
int botNumber = 0;
string botName = "Bot";
string finalName;
string buffer;
while(botNumber <50){
if(botNumber < 50){
botNumber = botNumber + 1;
buffer = to_string(botNumber);
finalName = botName + buffer;
//finalName.id = botNumber; A very very broken line.
bots[botNumber].id = botNumber;
// cout << finalName << ":"<< bots[botNumber].id << endl; A super awesome debugging output to make sure the bot's id is correct
}
else if((botNumber = 51)){ //Redundancy :)
break;
}
}
}
void mutateBot(int botID, int level, int sT){
if(sT=2){
bots[botID].mutationLevel = bots[botID].mutationLevel + level;
}
else if(sT=1){
bots[botID].mutationLevel = bots[botID].mutationLevel - level;
}
// cout << botID << ":" << bots[botID].mutationLevel << endl; //Just a quick debugging feature to make sure it worked
}
void ckLoc(int botIdent){
int bufferX;
int bufferY;
bufferX = bots[botIdent].x_cord; //Just set the buffers. Uses a bit more memory, but that is okay.
bufferY = bots[botIdent].y_cord;
// cout << bufferX << endl << bufferY;
if(mapBot[bufferX][bufferY] ==1){
cout << "Bot lives here!";
reassignLoc(botIdent);
}
}
void reassignLoc(int botID){
bots[botID].x_cord = rand() % 39 + 1;
bots[botID].y_cord = rand() % 69 + 1;
ckLoc(botID);
}
void moveBot(int botID){
int direction = 0;
direction = rand() % 4 + 1;
if(direction == 1){ //NORTH
if(bots[botID].y_cord=0){
//cout << "error moving bot - N ";
moveBot(botID);
}
else{
//cout << "BufferY: " << bufferY;
bots[botID].y_cord - 1;
}
}
else if(direction == 2){ //EAST
if(bots[botID].x_cord = 39){
//cout << "error moving bot - E";
moveBot(botID);
}
else{
bots[botID].x_cord + 1;
}
}
else if(direction == 3){ //SOUTH
if(bots[botID].y_cord = 69){
//cout << "error moving bot - S ";
moveBot(botID);
}
else{
bots[botID].y_cord + 1;
}
}
else if(direction == 4){ //WEST
if(bots[botID].x_cord = 0){
//cout << "error moving bot - W";
moveBot(botID);
}
else{
bots[botID].x_cord = bots[botID].x_cord - 1;
}
}
// cout << endl << "Direction: " << direction << endl; //Debug
}
另外，我知道while循环。在我交出项目之前，我必须清理所有内容。
答案 0 :(得分：2)
表单的所有行
if(bots[botID].y_cord=0)
正在分配给bots[botID].y_cord。您需要使用==来测试相等性
if(bots[botID].y_cord==0)
// ^
另外，表格的行
bots[botID].x_cord + 1;
应该是
bots[botID].x_cord += 1;
如果您想影响bots[botID].x_cord
答案 1 :(得分：0)
我建议您使用switch语句而不是if-else-if阶梯。
switch (direction)
{
case 1:
// do stuff
break;
case 2:
// do stuff
break;
// etc.
}
对于您的程序，它看起来更具可读性并且错误的机会更少。