I'm trying to create a little ascii game where I can run around kill enemies etc. However I'm new to C and I would like to do something if the players location is at a certain point.
Below is a simpler version of the code and a picture of the problem:
#include <iostream>
using namespace std;
struct Game
{
bool bGameOver = false;
int iWidth = 20;
int iHeight = 40;
void Draw() {
if (player.x == 5)
{
cout << "Hello"
}
}
};
struct Player
{
bool bGameOver = false;
int x = 0;
int y = 0;
};
void Setup()
{
}
int main()
{
Game game;
Player player;
while (!game.bGameOver)
{
Setup();
}
}
CodePudding user response：
The variable player is local in function main, so it's not visible where you tried to use it in Game::Draw.
One solution could be to make player a global variable. You'll need to switch the order of the structs:
struct Player
{
bool bGameOver = false;
int x = 0;
int y = 0;
};
Player player;
struct Game
{
bool bGameOver = false;
int iWidth = 20;
int iHeight = 40;
void Draw() {
if (player.x == 5)
{
cout << "Hello"
}
}
};
But I'd prefer to instead model things so a Game "has a" Player. So make Player a member of the Game:
struct Player
{
bool bGameOver = false;
int x = 0;
int y = 0;
};
struct Game
{
Player player;
bool bGameOver = false;
int iWidth = 20;
int iHeight = 40;
void Draw() {
if (player.x == 5)
{
cout << "Hello"
}
}
};
(Aside: You probably don't want two different values called bGameOver, since keeping them in sync would be extra work. It sounds more like a game property than a player property to me.)