/
GlobalLootModifiersTest.java
311 lines (278 loc) · 14.7 KB
/
GlobalLootModifiersTest.java
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
/*
* Minecraft Forge
* Copyright (c) 2016-2021.
*
* This library 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 version 2.1
* of the License.
*
* This library 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 this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
package net.minecraftforge.debug.gameplay.loot;
import com.google.gson.JsonObject;
import com.google.gson.JsonParseException;
import net.minecraft.advancements.critereon.EnchantmentPredicate;
import net.minecraft.advancements.critereon.ItemPredicate;
import net.minecraft.advancements.critereon.MinMaxBounds;
import net.minecraft.world.level.block.Blocks;
import net.minecraft.data.DataGenerator;
import net.minecraft.world.item.enchantment.Enchantment;
import net.minecraft.world.item.enchantment.Enchantment.Rarity;
import net.minecraft.world.item.enchantment.EnchantmentHelper;
import net.minecraft.world.item.enchantment.EnchantmentCategory;
import net.minecraft.world.item.enchantment.Enchantments;
import net.minecraft.world.entity.EquipmentSlot;
import net.minecraft.world.SimpleContainer;
import net.minecraft.world.item.Item;
import net.minecraft.world.item.ItemStack;
import net.minecraft.world.item.Items;
import net.minecraft.world.item.crafting.SmeltingRecipe;
import net.minecraft.world.item.crafting.RecipeType;
import net.minecraft.world.level.storage.loot.LootContext;
import net.minecraft.world.level.storage.loot.parameters.LootContextParamSets;
import net.minecraft.world.level.storage.loot.parameters.LootContextParams;
import net.minecraft.world.level.storage.loot.LootTable;
import net.minecraft.world.level.storage.loot.predicates.LootItemBlockStatePropertyCondition;
import net.minecraft.world.level.storage.loot.predicates.LootItemCondition;
import net.minecraft.world.level.storage.loot.predicates.MatchTool;
import net.minecraft.util.GsonHelper;
import net.minecraft.resources.ResourceLocation;
import net.minecraftforge.common.data.GlobalLootModifierProvider;
import net.minecraftforge.common.loot.GlobalLootModifierSerializer;
import net.minecraftforge.common.loot.LootModifier;
import net.minecraftforge.common.loot.LootTableIdCondition;
import net.minecraftforge.eventbus.api.SubscribeEvent;
import net.minecraftforge.registries.RegistryObject;
import net.minecraftforge.fml.common.Mod;
import net.minecraftforge.fml.common.Mod.EventBusSubscriber;
import net.minecraftforge.forge.event.lifecycle.GatherDataEvent;
import net.minecraftforge.fml.javafmlmod.FMLJavaModLoadingContext;
import net.minecraftforge.items.ItemHandlerHelper;
import net.minecraftforge.registries.DeferredRegister;
import net.minecraftforge.registries.ForgeRegistries;
import javax.annotation.Nonnull;
import java.util.ArrayList;
import java.util.List;
import java.util.stream.Collectors;
@Mod(GlobalLootModifiersTest.MODID)
public class GlobalLootModifiersTest {
public static final String MODID = "global_loot_test";
public static final boolean ENABLE = true;
public GlobalLootModifiersTest()
{
if(ENABLE)
{
GLM.register(FMLJavaModLoadingContext.get().getModEventBus());
ENCHANTS.register(FMLJavaModLoadingContext.get().getModEventBus());
}
}
private static final DeferredRegister<GlobalLootModifierSerializer<?>> GLM = DeferredRegister.create(ForgeRegistries.LOOT_MODIFIER_SERIALIZERS, MODID);
private static final DeferredRegister<Enchantment> ENCHANTS = DeferredRegister.create(ForgeRegistries.ENCHANTMENTS, MODID);
private static final RegistryObject<DungeonLootEnhancerModifier.Serializer> DUNGEON_LOOT = GLM.register("dungeon_loot", DungeonLootEnhancerModifier.Serializer::new);
private static final RegistryObject<SmeltingEnchantmentModifier.Serializer> SMELTING = GLM.register("smelting", SmeltingEnchantmentModifier.Serializer::new);
private static final RegistryObject<WheatSeedsConverterModifier.Serializer> WHEATSEEDS = GLM.register("wheat_harvest", WheatSeedsConverterModifier.Serializer::new);
private static final RegistryObject<SilkTouchTestModifier.Serializer> SILKTOUCH = GLM.register("silk_touch_bamboo", SilkTouchTestModifier.Serializer::new);
private static final RegistryObject<Enchantment> SMELT = ENCHANTS.register("smelt", () -> new SmelterEnchantment(Rarity.UNCOMMON, EnchantmentCategory.DIGGER, EquipmentSlot.MAINHAND));
@EventBusSubscriber(modid = MODID, bus = EventBusSubscriber.Bus.MOD)
public static class EventHandlers {
@SubscribeEvent
public static void runData(GatherDataEvent event)
{
if(ENABLE)
event.getGenerator().addProvider(new DataProvider(event.getGenerator(), MODID));
}
}
private static class DataProvider extends GlobalLootModifierProvider
{
public DataProvider(DataGenerator gen, String modid)
{
super(gen, modid);
}
@Override
protected void start()
{
add("smelting", SMELTING.get(), new SmeltingEnchantmentModifier(
new LootItemCondition[]{
MatchTool.toolMatches(
ItemPredicate.Builder.item().hasEnchantment(
new EnchantmentPredicate(SMELT.get(), MinMaxBounds.Ints.atLeast(1))))
.build()
})
);
add("wheat_harvest", WHEATSEEDS.get(), new WheatSeedsConverterModifier(
new LootItemCondition[] {
MatchTool.toolMatches(ItemPredicate.Builder.item().of(Items.SHEARS)).build(),
LootItemBlockStatePropertyCondition.hasBlockStateProperties(Blocks.WHEAT).build()
},
3, Items.WHEAT_SEEDS, Items.WHEAT)
);
add("dungeon_loot", DUNGEON_LOOT.get(), new DungeonLootEnhancerModifier(
new LootItemCondition[] { LootTableIdCondition.builder(new ResourceLocation("chests/simple_dungeon")).build() })
);
}
}
private static class SmelterEnchantment extends Enchantment {
protected SmelterEnchantment(Rarity rarityIn, EnchantmentCategory typeIn, EquipmentSlot... slots) {
super(rarityIn, typeIn, slots);
}
}
/**
* The smelting enchantment causes this modifier to be invoked, via the smelting loot_modifier json
*
*/
private static class SmeltingEnchantmentModifier extends LootModifier {
public SmeltingEnchantmentModifier(LootItemCondition[] conditionsIn) {
super(conditionsIn);
}
@Nonnull
@Override
public List<ItemStack> doApply(List<ItemStack> generatedLoot, LootContext context) {
ArrayList<ItemStack> ret = new ArrayList<ItemStack>();
generatedLoot.forEach((stack) -> ret.add(smelt(stack, context)));
return ret;
}
private static ItemStack smelt(ItemStack stack, LootContext context) {
return context.getLevel().getRecipeManager().getRecipeFor(RecipeType.SMELTING, new SimpleContainer(stack), context.getLevel())
.map(SmeltingRecipe::getResultItem)
.filter(itemStack -> !itemStack.isEmpty())
.map(itemStack -> ItemHandlerHelper.copyStackWithSize(itemStack, stack.getCount() * itemStack.getCount()))
.orElse(stack);
}
private static class Serializer extends GlobalLootModifierSerializer<SmeltingEnchantmentModifier> {
@Override
public SmeltingEnchantmentModifier read(ResourceLocation name, JsonObject json, LootItemCondition[] conditionsIn) {
return new SmeltingEnchantmentModifier(conditionsIn);
}
@Override
public JsonObject write(SmeltingEnchantmentModifier instance) {
return makeConditions(instance.conditions);
}
}
}
/**
* When harvesting blocks with bamboo, this modifier is invoked, via the silk_touch_bamboo loot_modifier json
*
*/
private static class SilkTouchTestModifier extends LootModifier {
public SilkTouchTestModifier(LootItemCondition[] conditionsIn) {
super(conditionsIn);
}
@Nonnull
@Override
public List<ItemStack> doApply(List<ItemStack> generatedLoot, LootContext context) {
ItemStack ctxTool = context.getParamOrNull(LootContextParams.TOOL);
//return early if silk-touch is already applied (otherwise we'll get stuck in an infinite loop).
if(EnchantmentHelper.getEnchantments(ctxTool).containsKey(Enchantments.SILK_TOUCH)) return generatedLoot;
ItemStack fakeTool = ctxTool.copy();
fakeTool.enchant(Enchantments.SILK_TOUCH, 1);
LootContext.Builder builder = new LootContext.Builder(context);
builder.withParameter(LootContextParams.TOOL, fakeTool);
LootContext ctx = builder.create(LootContextParamSets.BLOCK);
LootTable loottable = context.getLevel().getServer().getLootTables().get(context.getParamOrNull(LootContextParams.BLOCK_STATE).getBlock().getLootTable());
return loottable.getRandomItems(ctx);
}
private static class Serializer extends GlobalLootModifierSerializer<SilkTouchTestModifier> {
@Override
public SilkTouchTestModifier read(ResourceLocation name, JsonObject json, LootItemCondition[] conditionsIn) {
return new SilkTouchTestModifier(conditionsIn);
}
@Override
public JsonObject write(SilkTouchTestModifier instance) {
return makeConditions(instance.conditions);
}
}
}
/**
* When harvesting wheat with shears, this modifier is invoked via the wheat_harvest loot_modifier json<br/>
* This modifier checks how many seeds were harvested and turns X seeds into Y wheat (3:1)
*
*/
private static class WheatSeedsConverterModifier extends LootModifier {
private final int numSeedsToConvert;
private final Item itemToCheck;
private final Item itemReward;
public WheatSeedsConverterModifier(LootItemCondition[] conditionsIn, int numSeeds, Item itemCheck, Item reward) {
super(conditionsIn);
numSeedsToConvert = numSeeds;
itemToCheck = itemCheck;
itemReward = reward;
}
@Nonnull
@Override
public List<ItemStack> doApply(List<ItemStack> generatedLoot, LootContext context) {
//
// Additional conditions can be checked, though as much as possible should be parameterized via JSON data.
// It is better to write a new ILootCondition implementation than to do things here.
//
int numSeeds = 0;
for(ItemStack stack : generatedLoot) {
if(stack.getItem() == itemToCheck)
numSeeds+=stack.getCount();
}
if(numSeeds >= numSeedsToConvert) {
generatedLoot.removeIf(x -> x.getItem() == itemToCheck);
generatedLoot.add(new ItemStack(itemReward, (numSeeds/numSeedsToConvert)));
numSeeds = numSeeds%numSeedsToConvert;
if(numSeeds > 0)
generatedLoot.add(new ItemStack(itemToCheck, numSeeds));
}
return generatedLoot;
}
private static class Serializer extends GlobalLootModifierSerializer<WheatSeedsConverterModifier> {
@Override
public WheatSeedsConverterModifier read(ResourceLocation name, JsonObject object, LootItemCondition[] conditionsIn) {
int numSeeds = GsonHelper.getAsInt(object, "numSeeds");
Item seed = ForgeRegistries.ITEMS.getValue(new ResourceLocation((GsonHelper.getAsString(object, "seedItem"))));
Item wheat = ForgeRegistries.ITEMS.getValue(new ResourceLocation(GsonHelper.getAsString(object, "replacement")));
return new WheatSeedsConverterModifier(conditionsIn, numSeeds, seed, wheat);
}
@Override
public JsonObject write(WheatSeedsConverterModifier instance) {
JsonObject json = makeConditions(instance.conditions);
json.addProperty("numSeeds", instance.numSeedsToConvert);
json.addProperty("seedItem", ForgeRegistries.ITEMS.getKey(instance.itemToCheck).toString());
json.addProperty("replacement", ForgeRegistries.ITEMS.getKey(instance.itemReward).toString());
return json;
}
}
}
private static class DungeonLootEnhancerModifier extends LootModifier {
private final int multiplicationFactor;
public DungeonLootEnhancerModifier(final LootItemCondition[] conditionsIn, final int multiplicationFactor) {
super(conditionsIn);
this.multiplicationFactor = multiplicationFactor;
}
public DungeonLootEnhancerModifier(final LootItemCondition[] conditionsIn) {
this(conditionsIn, 2);
}
@Override
protected List<ItemStack> doApply(List<ItemStack> generatedLoot, LootContext context) {
return generatedLoot.stream()
.map(ItemStack::copy)
.peek(stack -> stack.setCount(Math.min(stack.getMaxStackSize(), stack.getCount() * this.multiplicationFactor)))
.collect(Collectors.toList());
}
private static class Serializer extends GlobalLootModifierSerializer<DungeonLootEnhancerModifier> {
@Override
public DungeonLootEnhancerModifier read(ResourceLocation location, JsonObject object, LootItemCondition[] conditions) {
final int multiplicationFactor = GsonHelper.getAsInt(object, "multiplication_factor", 2);
if (multiplicationFactor <= 0) throw new JsonParseException("Unable to set a multiplication factor to a number lower than 1");
return new DungeonLootEnhancerModifier(conditions, multiplicationFactor);
}
@Override
public JsonObject write(DungeonLootEnhancerModifier instance) {
final JsonObject obj = this.makeConditions(instance.conditions);
obj.addProperty("multiplication_factor", instance.multiplicationFactor);
return obj;
}
}
}
}