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/* *****************************************************************************
* A.L.E (Arcade Learning Environment)
* Copyright (c) 2009-2013 by Yavar Naddaf, Joel Veness, Marc G. Bellemare and
* the Reinforcement Learning and Artificial Intelligence Laboratory
* Released under the GNU General Public License; see License.txt for details.
*
* Based on: Stella -- "An Atari 2600 VCS Emulator"
* Copyright (c) 1995-2007 by Bradford W. Mott and the Stella team
*
* *****************************************************************************
*/
#include "Koolaid.hpp"
#include "../RomUtils.hpp"
namespace ale {
KoolaidSettings::KoolaidSettings() { reset(); }
/* create a new instance of the rom */
RomSettings* KoolaidSettings::clone() const {
RomSettings* rval = new KoolaidSettings();
*rval = *this;
return rval;
}
/* process the latest information from ALE */
void KoolaidSettings::step(const System& system) {
// update the reward
int score = getDecimalScore(0x81, 0x80, &system);
score *= 100;
int reward = score - m_score;
m_reward = reward;
m_score = score;
m_terminal = readRam(&system, 0xD1) == 0x80;
}
/* is end of game */
bool KoolaidSettings::isTerminal() const { return m_terminal; };
/* get the most recently observed reward */
reward_t KoolaidSettings::getReward() const { return m_reward; }
/* is an action part of the minimal set? */
bool KoolaidSettings::isMinimal(const Action& a) const {
switch (a) {
case PLAYER_A_NOOP:
case PLAYER_A_UP:
case PLAYER_A_RIGHT:
case PLAYER_A_LEFT:
case PLAYER_A_DOWN:
case PLAYER_A_UPRIGHT:
case PLAYER_A_UPLEFT:
case PLAYER_A_DOWNRIGHT:
case PLAYER_A_DOWNLEFT:
return true;
default:
return false;
}
}
/* reset the state of the game */
void KoolaidSettings::reset() {
m_reward = 0;
m_score = 0;
m_terminal = false;
}
/* saves the state of the rom settings */
void KoolaidSettings::saveState(Serializer& ser) {
ser.putInt(m_reward);
ser.putInt(m_score);
ser.putBool(m_terminal);
}
// loads the state of the rom settings
void KoolaidSettings::loadState(Deserializer& ser) {
m_reward = ser.getInt();
m_score = ser.getInt();
m_terminal = ser.getBool();
}
} // namespace ale