Hello, world!
I'm a c++ newbie trying to code a RPG with a raycaster (based on Lode's tutorial). Everything was going smooth and I've got to the point where I could do the floor and ceiling casting. However, I ran into problems when I decided it was time to split the code in different classes.
The first class I was trying to add was "Player" which will store position, movement and "camera" parameters. Unfortunately, it went from looking like this:
to looking like this:
Using Eclipse's debugger I found that the player object is not constructing itself properly, which I found kind of weird but I guess it could some sort of pointer related stuff (honestly, I have no idea what it could be, other that my lack of knowledge of C++).
This is my class header:
#ifndef PLAYER_HPP_
#define PLAYER_HPP_
namespace player
{
class Player {
public:
//========================================================================
//Public attributes=======================================================
//========================================================================
//Raycaster parameters====================================================
//Camera parameters
unsigned short int cMapID; //Current map
sf::Vector2f pos; //Initial player's position
sf::Vector2f dir; //Initial player's direction: {(-1,0) = N, (0,1) = E, (1,0) = S, (0,-1) = W}
sf::Vector2f cam; //Initial "camera plane": {(0,0.5) = N, (0.5,0) = E, (0,-0.5) = S, (-0.5,0) = W}
//Auxiliar variables to check movement
sf::Vector2f oldPos; //Auxiliar variable to evaluate movement
bool isPlayerMoving = false; //Activate when the player moves
//Movement & rotation parameters
float baseSpeed; //Works for 0.16,0.2, 0.24, 0.28, 0.32 //Should try something similar to what I did with rotation
float d2Wall; //Auxiliar variable to keep the player from moving at a minimum distance to walls
short int rotFrames; //Number of rotation frames
short int rotCFrame; //Auxiliar variable to check how many "frames" have passed
double rotSpeed; //Rotation speed in rad/frame
//Raycaster parameters====================================================
//========================================================================
//Public functions========================================================
//========================================================================
Player(unsigned short int _cMapID, sf::Vector2f _pos, sf::Vector2f _dir);
virtual ~Player();
};
}
#endif /* PLAYER_HPP_ */
and this is my class implementation file:
#include "GlobalVariables.hpp"
#include "Player.hpp"
namespace player
{
Player::Player(unsigned short int _cMapID, sf::Vector2f _pos, sf::Vector2f _dir) {
//Raycaster parameters====================================================
//Camera parameters
unsigned short int cMapID = _cMapID; //Current map
sf::Vector2f pos = _pos; //Initial player's position
std::cout << pos.x;
sf::Vector2f dir = _dir; //Initial player's direction: {(-1,0) = N, (0,1) = E, (1,0) = S, (0,-1) = W}
//Initial "camera plane": {(0,0.5) = N, (0.5,0) = E, (0,-0.5) = S, (-0.5,0) = W}
if ( std::abs(dir.x) > std::abs(dir.y) ) sf::Vector2f cam(0, - dir.x / 2.0);
else sf::Vector2f cam(dir.y / 2.0 , 0);
//Auxiliar variables to check movement
sf::Vector2f oldPos = pos; //Auxiliar variable to evaluate movement
bool isPlayerMoving = false; //Activate when the player moves
//Movement & rotation parameters
float baseSpeed = 0.2; //Works for 0.16,0.2, 0.24, 0.28, 0.32 //Should try something similar to what I did with rotation
float d2Wall = 0.6 / baseSpeed; //Auxiliar variable to keep the player from moving at a minimum distance to walls
short int rotFrames = 30; //Number of rotation frames
short int rotCFrame = 0; //Auxiliar variable to check how many "frames" have passed
double rotSpeed = 0; //Rotation speed in rad/frame
//Raycaster parameters====================================================
}
Player::~Player() {
// TODO Auto-generated destructor stub
}
}
This is how I'm calling the object at my main:
sf::Vector2f initPos(7.5, 8.5);
sf::Vector2f initDir(0, - 1);
player::Player mPlayer(0, initPos, initDir);
Looking at the variables with the debugger, the arguments are passing properly to the constructor (i.e. player.pos seems to update to whatever _pos is). However, when the code goes back to main(), the values passed to the constructor don't carry over. If I modify the header file as follows:
namespace player
{
class Player {
public:
//========================================================================
//Public attributes=======================================================
//========================================================================
//Raycaster parameters====================================================
//Camera parameters
unsigned short int cMapID; //Current map
sf::Vector2f pos; //Initial player's position
sf::Vector2f dir; //Initial player's direction: {(-1,0) = N, (0,1) = E, (1,0) = S, (0,-1) = W}
sf::Vector2f cam; //Initial "camera plane": {(0,0.5) = N, (0.5,0) = E, (0,-0.5) = S, (-0.5,0) = W}
//Auxiliar variables to check movement
sf::Vector2f oldPos; //Auxiliar variable to evaluate movement
bool isPlayerMoving = false; //Activate when the player moves
//Movement & rotation parameters
float baseSpeed = 0.2; //Works for 0.16,0.2, 0.24, 0.28, 0.32 //Should try something similar to what I did with rotation
float d2Wall = 0.6 / baseSpeed; //Auxiliar variable to keep the player from moving at a minimum distance to walls
short int rotFrames = 30; //Number of rotation frames
short int rotCFrame = 0; //Auxiliar variable to check how many "frames" have passed
double rotSpeed = 0; //Rotation speed in rad/frame
//Raycaster parameters====================================================
//========================================================================
//Public functions========================================================
//========================================================================
Player(unsigned short int _cMapID, sf::Vector2f _pos, sf::Vector2f _dir);
virtual ~Player();
};
}
the predefined parameters are kept.
I've also tried declaring the class in the main file, but it doesn't work either. It seems to only work when I don't encapsulate stuff into a class.
Can someone please help me understand what I am doing wrong?
