Applied-Energistics-2-tiler.../src/main/java/appeng/hooks/AETrading.java

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/*
* This file is part of Applied Energistics 2.
* Copyright (c) 2013 - 2014, AlgorithmX2, All rights reserved.
*
* Applied Energistics 2 is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* Applied Energistics 2 is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with Applied Energistics 2. If not, see <http://www.gnu.org/licenses/lgpl>.
*/
package appeng.hooks;
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import java.util.Random;
import appeng.api.AEApi;
import appeng.api.definitions.IItemDefinition;
import appeng.api.definitions.IMaterials;
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import com.google.common.base.Optional;
import cpw.mods.fml.common.registry.VillagerRegistry.IVillageTradeHandler;
import net.minecraft.entity.passive.EntityVillager;
import net.minecraft.init.Items;
import net.minecraft.item.ItemStack;
import net.minecraft.village.MerchantRecipe;
import net.minecraft.village.MerchantRecipeList;
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public class AETrading implements IVillageTradeHandler {
@Override
public void manipulateTradesForVillager(
final EntityVillager villager,
final MerchantRecipeList recipeList,
final Random random
) {
final IMaterials materials = AEApi.instance().definitions().materials();
this.addMerchant(recipeList, materials.silicon(), 1, random, 2);
this.addMerchant(recipeList, materials.certusQuartzCrystal(), 2, random, 4);
this.addMerchant(recipeList, materials.certusQuartzDust(), 1, random, 3);
this.addTrade(
recipeList,
materials.certusQuartzDust(),
materials.certusQuartzCrystal(),
random,
2
);
}
private void addMerchant(
final MerchantRecipeList list,
final IItemDefinition item,
final int emera,
final Random rand,
final int greed
) {
for (final ItemStack itemStack : item.maybeStack(1).asSet()) {
// Sell
final ItemStack from = itemStack.copy();
final ItemStack to = new ItemStack(Items.emerald);
final int multiplier = (Math.abs(rand.nextInt()) % 6);
final int emeraldCost
= emera + (Math.abs(rand.nextInt()) % greed) - multiplier;
final int mood = rand.nextInt() % 2;
from.stackSize = multiplier + mood;
to.stackSize = multiplier * emeraldCost - mood;
if (to.stackSize < 0) {
from.stackSize -= to.stackSize;
to.stackSize -= to.stackSize;
}
this.addToList(list, from, to);
// Buy
final ItemStack reverseTo = from.copy();
final ItemStack reverseFrom = to.copy();
reverseFrom.stackSize *= rand.nextFloat() * 3.0f + 1.0f;
this.addToList(list, reverseFrom, reverseTo);
}
}
private void addTrade(
final MerchantRecipeList list,
final IItemDefinition inputDefinition,
final IItemDefinition outputDefinition,
final Random rand,
final int conversionVariance
) {
final Optional<ItemStack> maybeInputStack = inputDefinition.maybeStack(1);
final Optional<ItemStack> maybeOutputStack = outputDefinition.maybeStack(1);
if (maybeInputStack.isPresent() && maybeOutputStack.isPresent()) {
// Sell
final ItemStack inputStack = maybeInputStack.get().copy();
final ItemStack outputStack = maybeOutputStack.get().copy();
inputStack.stackSize
= 1 + (Math.abs(rand.nextInt()) % (1 + conversionVariance));
outputStack.stackSize = 1;
this.addToList(list, inputStack, outputStack);
}
}
private void
addToList(final MerchantRecipeList l, final ItemStack a, final ItemStack b) {
if (a.stackSize < 1) {
a.stackSize = 1;
}
if (b.stackSize < 1) {
b.stackSize = 1;
}
if (a.stackSize > a.getMaxStackSize()) {
a.stackSize = a.getMaxStackSize();
}
if (b.stackSize > b.getMaxStackSize()) {
b.stackSize = b.getMaxStackSize();
}
l.add(new MerchantRecipe(a, b));
}
}