Undefined reference to `vtable for "abstract classname" even after derived class definition

Projects Programming
6

I've made the necessary changes to pass it in as a pointer.

Heres the gamehandler.h

#ifndef GAMEHANDLER_H
#define GAMEHANDLER_H
#include <stdlib.h>
#include <Arduino.h>
#include "Target.h"
#include "Gamemode.h"
#include "SoloTimeMode.h"


class GameHandler {
private:
  bool _isPaused;
  bool _gameEnded;



  unsigned long _gameTimer;
  Gamemode* _gamemode;
  int _numTargets;
  Target* _targets;
  unsigned long _gameDuration;


public:
  GameHandler(Target targets[], int numTargets);
  void init();
  void selectGamemode(Gamemode &mode);
  void gameLoop();

  void handleTargetsLogic();
};


#endif

heres the gamehandler.cpp:

#include "GameHandler.h"
#include <stdlib.h>
#include <Arduino.h>


GameHandler::GameHandler(Target targets[], int numTargets) {
  _targets = targets;
  _numTargets = numTargets;
  _isPaused = true;
  _gameEnded = false;
  // _gamemode = 0;



  _gameTimer = 0;
}

void GameHandler::init() {
  for (int i = 0; i < _numTargets; i++) {
    _targets[i].init();
  }
}

void GameHandler::selectGamemode(Gamemode &mode) {
  _gamemode = mode;
  _isPaused = false;
  _gameTimer = millis();
}

void GameHandler::gameLoop() {
  if (_isPaused) {
    return;
  }

  handleTargetsLogic();
}

void GameHandler::handleTargetsLogic() {
  for (int i = 0; i < _numTargets; i++) {
    _gamemode.prepareTargetHandler(_targets[i]);
    if (_targets[i].hasBeenShot()) {
      _gamemode.onTargetHitHandler(_targets[i]);
    }
  }
}

heres the gamemode.h file

#ifndef GAMEMODE_H
#define GAMEMODE_H
#include <stdlib.h>
#include <Arduino.h>
#include "Target.h"
#include "TargetState.h"

// enum Gamemode { SOLO_TIME_CHALLENGE,
//                 SOLO_RANDOM_CHALLENGE,
//                 MULTI_RANDOM_CHALLENGE };

class Gamemode {
protected:
  unsigned long startTime;
  unsigned long endTime;

  int ledOneThreshold;
  int ledTwoThreshold;
  int ledAllThreshold;
  int ledNonThreshold;

public:
  virtual void handleGameModeLogic()=0;
  virtual void onTargetHitHandler(Target &target)=0;
  virtual void prepareTargetHandler(Target &target)=0;

};


#endif

solotimemode.h

#ifndef SOLOTIMEMODE_H
#define SOLOTIMEMODE_H
#include <stdlib.h>
#include <Arduino.h>
#include "Gamemode.h"
#include "Target.h"

class SoloTimeMode : public Gamemode {
private:
  int _score;
  int _numTargets;



public:
  SoloTimeMode(int numTargets);
  void handleGameModeLogic() override;

  void prepareTargetHandler(Target &target) override;
  void onTargetHitHandler(Target &target) override;

  void endGame();
};

#endif

and the cpp

#include <stdlib.h>
#include <Arduino.h>
#include "SoloTimeMode.h"

SoloTimeMode::SoloTimeMode(int numTargets) {
  _score = 0;
  startTime = millis();
  endTime = 0;
  _numTargets = numTargets;

  ledOneThreshold = 0;
  ledTwoThreshold = 0;
  ledAllThreshold = 0;
  ledNonThreshold = 0;
}

void SoloTimeMode::handleGameModeLogic() {
}

void SoloTimeMode::prepareTargetHandler(Target &target) {
  switch (target.getState()) {
    case LED_NON:
      target.setState(LED_ONE);
      break;
    case LED_TWO:
      break;
    case LED_ONE:
      break;
    case LED_ALL:
      break;
  }
}
void SoloTimeMode::onTargetHitHandler(Target &target) {
  switch (target.getState()) {
    case LED_NON:
      // do nothing
      break;
    case LED_TWO:
      break;
    case LED_ONE:
      // _score++;
      target.setState(LED_TWO);
      _score++;
      if (_score == _numTargets) { endGame(); }
      break;
    case LED_ALL:
      break;
  }
}

void SoloTimeMode::endGame() {
  endTime = millis();
}

Now this is the error im getting.

C:\Users\LENOVO\Documents\Arduino\sketch_jan18a\GameHandler.cpp: In member function 'void GameHandler::selectGamemode(Gamemode&)':
C:\Users\LENOVO\Documents\Arduino\sketch_jan18a\GameHandler.cpp:25:15: error: cannot convert 'Gamemode' to 'Gamemode*' in assignment
   _gamemode = mode;
               ^~~~
C:\Users\LENOVO\Documents\Arduino\sketch_jan18a\GameHandler.cpp: In member function 'void GameHandler::handleTargetsLogic()':
C:\Users\LENOVO\Documents\Arduino\sketch_jan18a\GameHandler.cpp:40:15: error: request for member 'prepareTargetHandler' in '((GameHandler*)this)->GameHandler::_gamemode', which is of pointer type 'Gamemode*' (maybe you meant to use '->' ?)
     _gamemode.prepareTargetHandler(_targets[i]);
               ^~~~~~~~~~~~~~~~~~~~
C:\Users\LENOVO\Documents\Arduino\sketch_jan18a\GameHandler.cpp:42:17: error: request for member 'onTargetHitHandler' in '((GameHandler*)this)->GameHandler::_gamemode', which is of pointer type 'Gamemode*' (maybe you meant to use '->' ?)
       _gamemode.onTargetHitHandler(_targets[i]);
                 ^~~~~~~~~~~~~~~~~~

exit status 1

Compilation error: cannot convert 'Gamemode' to 'Gamemode*' in assignment

Heres the main arduino code:

#include "Target.h"
#include "GameHandler.h"
#include "SoloTimeMode.h"


const int LED_PIN_1 = 7;
const int LED_PIN_2 = 6;
const uint8_t PIEZO_PIN_1 = A5;

const int LED_PIN_1a = 4;
const int LED_PIN_2a = 5;
const uint8_t PIEZO_PIN_2 = A0;


int counter = 0;

int targetSensitivity = 1000;



const int NUM_TARGETS = 2;
Target targets[NUM_TARGETS] = { Target(PIEZO_PIN_1, LED_PIN_1, LED_PIN_2),
                                Target(PIEZO_PIN_2, LED_PIN_1a, LED_PIN_2a) };

GameHandler gameHandler(targets, NUM_TARGETS);
SoloTimeMode mode(NUM_TARGETS);

void setup() {
  gameHandler.init();
  Serial.begin(9600);
  
  gameHandler.selectGamemode(mode);
}

void loop() {
  gameHandler.gameLoop();

  Serial.println(targets[0].getState());
}

I feel like im getting closer but still not there yet. I'm not sure what these errors mean.

I'll attach the files unzipped if that helps.
GameHandler.cpp (854 Bytes)
GameHandler.h (551 Bytes)
Gamemode.h (624 Bytes)
sketch_jan18a.ino (739 Bytes)
SoloTimeMode.cpp (1.0 KB)
SoloTimeMode.h (455 Bytes)
Target.cpp (1.5 KB)
Target.h (623 Bytes)
TargetState.h (236 Bytes)