/** Constructs default characteristics. */
public Characteristics(int gender, int age) {
saturation = World.getEnvironment().getDefaultNeedValue();
happiness = World.getEnvironment().getDefaultNeedValue();
// The value will be recalculates immideately
safety = 1.0f;
// Set up the randomizers
hungryRandomizer = new IntervalRandomizer(World.getEnvironment().getNeedInterval());
depressedRandomizer = new IntervalRandomizer(World.getEnvironment().getNeedInterval());
// TODO Take from Environment.
unsafeRandomizer = new ProbabilityRandomizer(0.5f);
strollRandomizer = new IntervalRandomizer(World.getEnvironment().getStrollInterval());
// Set health, with max health as the full health
maximumHealth = 1f;
recalculateHealth();
this.gender = gender;
startAge = age;
timeOfBirth = World.getWorld().getWorldTime();
gatherSkill = World.getEnvironment().getDefaultSkillValue();
sacrificeSkill = World.getEnvironment().getDefaultSkillValue();
transportationSkill = World.getEnvironment().getDefaultSkillValue();
}
/**
* Decreases the happiness with an amount calculated from the time since the last update cycle
* multiplied by a constant (getNeedDecreaseSpeed). Needs to be called every update cycle to
* calculate correctly.
*/
void decreaseHappiness() {
// Calculates the factor of decrease that should be multiplied
// with the happiness
float decreaseFactor =
1 - (World.getEnvironment().getNeedDecreaseSpeed() * World.getWorld().getTimeSinceCycle());
happiness *= decreaseFactor;
}
/**
* Decreases the saturation with an amount calculated from the time since the last update cycle
* multiplied by a constant (getNeedDecreaseSpeed). Needs to be called every update cycle to
* calculate correctly.
*/
void decreaseSaturation() {
// Calculates the factor of decrease that should be multiplied
// with the saturation
float decreaseFactor =
1 - (World.getEnvironment().getNeedDecreaseSpeed() * World.getWorld().getTimeSinceCycle());
saturation *= decreaseFactor;
}
/**
* Decreases the value of the transportation skill, using a formula containing getTimeSinceCycle
* and getSkillDecreaseSpeed.
*/
private void decreaseTransportationSkill() {
// Decreases the transportation skill with the speed multiplied by the
// timeSinceCycle, but then modified with a factor of how close
// the mininimum skill value the current skill is. This means that
// the skill will never decrease to less than 0f.
transportationSkill -=
World.getEnvironment().getSkillDecreaseSpeed()
* World.getWorld().getTimeSinceCycle()
* transportationSkill;
}
/**
* Calculates if the owner of the characteristics is unsafe, and then returns the result as a
* boolean.
*
* @returns a boolean stating if the owner of the characteristics is unsafe.
*/
public boolean isUnsafe() {
// Make it more likely to feel unsafe when the safety is very low
float probabilityModifier = World.getEnvironment().getDefaultNeedValue() / safety;
// Time to get safe?
if (unsafeRandomizer.isSuccessful(probabilityModifier)) {
return true;
} else {
return false;
}
}
/**
* Calculates if the owner of the characteristics is depressed, and then returns the result as a
* boolean.
*
* @returns a boolean stating if the owner of the characteristics is depressed.
*/
public boolean isDepressed() {
// Make it more likely to eat when we're really depressed.
float probabilityModifier = World.getEnvironment().getDefaultNeedValue() / happiness;
// Time to get happy?
if (depressedRandomizer.isSuccessful(probabilityModifier)) {
return true;
} else {
return false;
}
}
/**
* Calculates if the owner of the characteristics is hungry, and then returns the result as a
* boolean.
*
* @returns a boolean stating if the owner of the characteristics is hungry.
*/
public boolean isHungry() {
// Make it more likely to eat when we're really hungry.
float probabilityModifier = World.getEnvironment().getDefaultNeedValue() / saturation;
// Time to eat?
if (hungryRandomizer.isSuccessful(probabilityModifier)) {
return true;
} else {
return false;
}
}
/**
* Sets the safety according to the given Point. The safety is calculated through the distance
* from the light pillar, with a constant (getSacrificedUnitsDistanceRatio).
*
* @param point the Point describing the position of the owner of the characteristics.
*/
void setSafety(Point point) {
LightPillarNode lightPillar = World.getWorld().getLightPillar();
float distance = point.distanceTo(lightPillar.getPoint());
distance = distance - lightPillar.getInfluenceRadius();
if (distance > 0) {
// Decreases the safety (which is 1) with the percentual value
// that is defined by safetyDecreaseFactor. The decrease is made
// distance times, so that safety = safetyDecrease ^ distance.
safety = (float) Math.pow(World.getEnvironment().getSafetyDecreaseFactor(), distance);
} else {
safety = 1;
}
}
/**
* Increases the value of the transportation skill, using a formula containing getTimeSinceCycle
* and getSkillIncreaseSpeed.
*/
public void increaseTransportationSkill() {
// Children to dont get better or worse in any skills.
if (!isChild()) {
// Increases the transportation skill with the speed multiplied by the
// timeSinceCycle, but then modified with a factor of how close
// the maximum skill value the current skill is. This means that
// the skill will never increase to over 1f.
transportationSkill +=
World.getEnvironment().getSkillIncreaseSpeed()
* World.getWorld().getTimeSinceCycle()
* (1f - transportationSkill);
// Decrease the other two skills.
decreaseSacrificeSkill();
decreaseGatherSkill();
}
}
/**
* Recalculates the health using the mean value of the three needs and the time since the last
* cycle. Health cannot be greater than the current maximum health, which is decreased constantly
* with a percentual constant. Needs to be called every update cycle to calculate correctly.
*/
void recalculateHealth() {
// Calculates the factor of decrease that should be multiplied
// with the maximum health
if (!isChild()) {
float agingFactor =
1 - (World.getEnvironment().getAgingFactor() * World.getWorld().getTimeSinceCycle());
maximumHealth *= agingFactor;
}
float newHealth = (saturation + happiness + (safety / 2f)) / 3f;
if (newHealth > maximumHealth) {
newHealth = maximumHealth;
}
health = newHealth;
}
/**
* "Converts" a percentual value (like a skill) to a factor value (like the efficiency). A
* percentual value goes from 0 to 1f and has a default value of 0.5f, a factor goes from 0 to
* infinity and has a default value of 1f.
*
* @param a percentual value to be converted.
* @return the given percentual value as a factor value.
*/
private float percentToFactor(float percentualValue) {
// Takes for example a skill, which is default 0.5f and adds 0.5f
// resulting in a factor of 1f, which would (correctly) not affect a
// value it's multiplied with.
return percentualValue + World.getEnvironment().getDefaultSkillValue();
}
/**
* Tests if the current age (getAge) is under a constant getAdultAge(). If so, the Individual is a
* child.
*
* @return a boolean stating if the Indiviudal is a child.
*/
public boolean isChild() {
return getAge() < World.getEnvironment().getAdultAge();
}
/**
* Returns an integer representing the age in pseudo years, as and individual would experience it.
* The age is calculated from a constant (getTimeYearRatio()).
*
* @return a int representing the age in pseudo years.
*/
public int getAge() {
return (int)
((World.getWorld().getWorldTime() - timeOfBirth)
/ World.getEnvironment().getYearSecondsRatio())
+ startAge;
}
/** Increases the happiness with an amount specified by a constant (getUnitNeedRatio). */
public void increaseHappiness() {
happiness += World.getEnvironment().getUnitNeedRatio();
if (happiness > 1f) {
happiness = 1f;
}
}
/** Increases the saturation with an amount specified by a constant (getUnitNeedRatio). */
public void increaseSaturation() {
saturation += World.getEnvironment().getUnitNeedRatio();
if (saturation > 1f) {
saturation = 1f;
}
}