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PowerProvider.java
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PowerProvider.java
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/**
* Copyright (c) SpaceToad, 2011 http://www.mod-buildcraft.com
*
* BuildCraft is distributed under the terms of the Minecraft Mod Public License
* 1.0, or MMPL. Please check the contents of the license located in
* http://www.mod-buildcraft.com/MMPL-1.0.txt
*/
package buildcraft.api.power;
import net.minecraft.nbt.NBTTagCompound;
import net.minecraft.tileentity.TileEntity;
import net.minecraftforge.common.ForgeDirection;
import buildcraft.api.core.SafeTimeTracker;
public final class PowerProvider {
public static class PerditionCalculator {
public static final float DEFAULT_POWERLOSS = 10F;
public static final float MIN_POWERLOSS = 0.01F;
protected final SafeTimeTracker energyLossTracker = new SafeTimeTracker();
private final float powerLoss;
public PerditionCalculator() {
powerLoss = DEFAULT_POWERLOSS;
}
public PerditionCalculator(float powerLoss) {
if (powerLoss < MIN_POWERLOSS) {
powerLoss = MIN_POWERLOSS;
}
this.powerLoss = powerLoss;
}
public float applyPerdition(PowerProvider provider, float current) {
current -= powerLoss;
if (current < 0) {
current = 0;
}
return current;
}
}
public static final PerditionCalculator DEFUALT_PERDITION = new PerditionCalculator();
private int minEnergyReceived;
private int maxEnergyReceived;
private int maxEnergyStored;
private int activationEnergy;
private float energyStored = 0;
public final boolean canAcceptPowerFromPipes;
private final SafeTimeTracker doWorkTracker = new SafeTimeTracker();
private final SafeTimeTracker energyLossTracker = new SafeTimeTracker();
public final int[] powerSources = {0, 0, 0, 0, 0, 0};
public final IPowerReceptor receptor;
private PerditionCalculator perdition;
public PowerProvider(IPowerReceptor receptor) {
this(receptor, true);
}
public PowerProvider(IPowerReceptor receptor, boolean canAcceptPowerFromPipes) {
this.canAcceptPowerFromPipes = canAcceptPowerFromPipes;
this.receptor = receptor;
}
public int getMinEnergyReceived() {
return this.minEnergyReceived;
}
public int getMaxEnergyReceived() {
return this.maxEnergyReceived;
}
public int getMaxEnergyStored() {
return this.maxEnergyStored;
}
public int getActivationEnergy() {
return this.activationEnergy;
}
public float getEnergyStored() {
return this.energyStored;
}
/**
* Setup your PowerProvider's settings.
*
* @param minEnergyReceived This is the minimum about of power that will be
* accepted by the PowerProvider. This should generally be greater than the
* activationEnergy if you plan to use the doWork() callback. Anything
* greater than 1 will prevent Redstone Engines from powering this Provider.
* @param maxEnergyReceived The maximum amount of power accepted by the
* PowerProvider. This should generally be less than 500. Too low and larger
* engines will overheat while trying to power the machine. Too high, and
* the engines will never warm up. Greater values also place greater strain
* on the power net.
* @param activationEnergy If the stored energy is greater than this value,
* the doWork() callback is called (once per tick).
* @param maxStoredEnergy The maximum amount of power this PowerProvider can
* store. Values tend to range between 100 and 5000. With 1000 and 1500
* being common.
*/
public void configure(int minEnergyReceived, int maxEnergyReceived, int activationEnergy, int maxStoredEnergy) {
if (minEnergyReceived > maxEnergyReceived) {
maxEnergyReceived = minEnergyReceived;
}
this.minEnergyReceived = minEnergyReceived;
this.maxEnergyReceived = maxEnergyReceived;
this.maxEnergyStored = maxStoredEnergy;
this.activationEnergy = activationEnergy;
}
public void update() {
applyPerdition();
applyWork();
for (int i = 0; i < 6; ++i) {
if (powerSources[i] > 0) {
powerSources[i]--;
}
}
}
public void configurePowerPerdition(int powerLoss, int powerLossRegularity) {
if (powerLoss == 0 || powerLossRegularity == 0) {
perdition = new PerditionCalculator(0);
return;
}
perdition = new PerditionCalculator((float) powerLoss / (float) powerLossRegularity * 10.0F);
}
public void setPerdition(PerditionCalculator perdition) {
this.perdition = perdition;
}
public PerditionCalculator getPerdition() {
if (perdition == null)
return DEFUALT_PERDITION;
return perdition;
}
private void applyPerdition() {
if (energyStored > 0) {
TileEntity tile = (TileEntity) receptor;
if (energyLossTracker.markTimeIfDelay(tile.worldObj, 10)) {
float newEnergy = getPerdition().applyPerdition(this, energyStored);
if (newEnergy == 0 || newEnergy < energyStored) {
energyStored = newEnergy;
} else {
energyStored = DEFUALT_PERDITION.applyPerdition(this, energyStored);
}
}
}
}
private void applyWork() {
if (energyStored >= activationEnergy) {
TileEntity tile = (TileEntity) receptor;
if (doWorkTracker.markTimeIfDelay(tile.worldObj, 1)) {
receptor.doWork(this);
}
}
}
/**
* Extract energy from the PowerProvider. You must call this even if
* doWork() triggers.
*
* @param min
* @param max
* @param doUse
* @return amount used
*/
public float useEnergy(float min, float max, boolean doUse) {
float result = 0;
if (energyStored >= min) {
if (energyStored <= max) {
result = energyStored;
if (doUse) {
energyStored = 0;
}
} else {
result = max;
if (doUse) {
energyStored -= max;
}
}
}
return result;
}
public void readFromNBT(NBTTagCompound data) {
readFromNBT(data, "powerProvider");
}
public void readFromNBT(NBTTagCompound data, String tag) {
NBTTagCompound nbt = data.getCompoundTag(tag);
energyStored = nbt.getFloat("storedEnergy");
}
public void writeToNBT(NBTTagCompound data) {
writeToNBT(data, "powerProvider");
}
public void writeToNBT(NBTTagCompound data, String tag) {
NBTTagCompound nbt = new NBTTagCompound();
nbt.setFloat("storedEnergy", energyStored);
data.setCompoundTag(tag, nbt);
}
/**
* The amount of power that this PowerProvider currently needs.
*
* @return
*/
public float powerRequest() {
return Math.min(maxEnergyReceived, maxEnergyStored - energyStored);
}
/**
* Add power to the Provider from an external source.
*
* @param quantity
* @param from
* @return the amount of power used
*/
public float receiveEnergy(float quantity, ForgeDirection from) {
if (quantity < minEnergyReceived) {
return 0;
}
if (quantity > maxEnergyReceived) {
quantity -= quantity - maxEnergyReceived;
}
if (from != null)
powerSources[from.ordinal()] = 2;
quantity = addEnergy(quantity);
applyWork();
return quantity;
}
/**
* Internal use only you should NEVER call this function on a PowerProvider
* you don't own.
*
* @return the amount the power changed by
*/
public float addEnergy(float quantity) {
energyStored += quantity;
if (energyStored > maxEnergyStored) {
quantity -= energyStored - maxEnergyStored;
energyStored = maxEnergyStored;
} else if (energyStored < 0) {
quantity -= energyStored;
energyStored = 0;
}
applyPerdition();
return quantity;
}
/**
* Internal use only you should NEVER call this function on a PowerProvider
* you don't own.
*/
public void setEnergy(float quantity) {
this.energyStored = quantity;
if (energyStored > maxEnergyStored) {
energyStored = maxEnergyStored;
} else if (energyStored < 0) {
energyStored = 0;
}
}
public boolean isPowerSource(ForgeDirection from) {
return powerSources[from.ordinal()] != 0;
}
}