gamesettings.cpp

VIGASOCO (VIdeo GAmes SOurce COde) Windows port (v0.01)

// GameSettings.cpp
//
/////////////////////////////////////////////////////////////////////////////

#include "GameSettings.h"
#include "Difficulty.h"
#include "../InputHandler.h"
#include "../Types.h"

/////////////////////////////////////////////////////////////////////////////
// initialization and cleanup
/////////////////////////////////////////////////////////////////////////////

GameSettings::GameSettings()
{
	resetState();
}

GameSettings::~GameSettings()
{
}

void GameSettings::resetState()
{
	accumulatedCoins = coinsInserted = 0;
	lastServices = lastCoins1 = lastCoins2 = 0;

	credits = coinsPerCredit[0] = coinsPerCredit[1] = 0;
	lives = bonusLife = 0;
	alternateGhostNames = false;
	difficulty = 0;
}

/////////////////////////////////////////////////////////////////////////////
// methods
/////////////////////////////////////////////////////////////////////////////

// read DISPW and store game settings
void GameSettings::getSettings()
{
	UINT32 dipsw1 = theInputHandler->getDIPSW(0);

	if ((dipsw1 & 0x03) == 00){
		// free play
		credits = 0xff;
	}

	int coins[4] = { 0, 1, 1, 2 };
	int credits[4] = { 0, 1, 2, 1 };

	// process credits per coin
	coinsPerCredit[COINS] = coins[dipsw1 & 0x03];
	coinsPerCredit[CREDITS] = credits[dipsw1 & 0x03];

	int numberOfLives[4] = { 1, 2, 3, 5 };

	// lives
	lives = numberOfLives[(dipsw1 >> 2) & 0x03];

	int bonusLifePts[4] = { 10000, 15000, 20000, MAX_INT };

	// bonus life
	bonusLife = bonusLifePts[(dipsw1 >> 4) & 0x03];

	// ghosts name
	alternateGhostNames = (dipsw1 & 0x80) == 0;

	// difficulty
	difficulty = ((dipsw1 & 0x40) == 0x40) ? Difficulty::normalDifSettings : Difficulty::hardDifSettings;
}

// check for a new coin and update credits if necessary
void GameSettings::checkForCoinInserted()
{
	// if we can't accept more credits, exit
	if (credits >= 99) return;

	// keep 4 last service values
	lastServices = ((lastServices << 1) | ((theInputHandler->getInput(0) >> 7) & 0x01)) & 0x0f;

	// if there's a 1->0 transition for at least 2 frames, try to get a credit
	if (lastServices == 0x0c){
		checkForCredit();
	}

	// keep 4 last coin 2 values
	lastCoins2 = ((lastCoins2 << 1) | ((theInputHandler->getInput(0) >> 6) & 0x01)) & 0x0f;
	
	// if there's a 1->0 transition for at least 2 frames, update coins
	if (lastCoins2 == 0x0c){
		coinsInserted++;
	}

	// keep 4 last coin 1 values
	lastCoins1 = ((lastCoins1 << 1) | ((theInputHandler->getInput(0) >> 5) & 0x01)) & 0x0f;
	
	// if there's a 1->0 transition for at least 2 frames, update coins
	if (lastCoins1 == 0x0c){
		coinsInserted++;
	}
}

void GameSettings::checkForNewCredit()
{
	if (coinsInserted > 0){
		checkForCredit();
		coinsInserted--;
	}
}

/////////////////////////////////////////////////////////////////////////////
// helper methods
/////////////////////////////////////////////////////////////////////////////

void GameSettings::checkForCredit()
{
	accumulatedCoins++;

	// if we've reached the number of coins needed, update credits
	if (accumulatedCoins == coinsPerCredit[COINS]){
		accumulatedCoins = 0;

		credits += coinsPerCredit[CREDITS];
		if (credits > 99) credits = 99;

		// TODOSOUND: play new credit sound
	}
}