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AttributesModifierHook.java
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AttributesModifierHook.java
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package slimeknights.tconstruct.library.modifiers.hook.behavior;
import com.google.common.collect.ImmutableMultimap;
import com.google.common.collect.Multimap;
import net.minecraft.world.entity.EquipmentSlot;
import net.minecraft.world.entity.EquipmentSlot.Type;
import net.minecraft.world.entity.ai.attributes.Attribute;
import net.minecraft.world.entity.ai.attributes.AttributeModifier;
import net.minecraft.world.entity.ai.attributes.Attributes;
import net.minecraft.world.item.Item;
import slimeknights.tconstruct.common.TinkerTags;
import slimeknights.tconstruct.library.modifiers.ModifierEntry;
import slimeknights.tconstruct.library.modifiers.ModifierHooks;
import slimeknights.tconstruct.library.modifiers.hook.build.ToolStatsModifierHook;
import slimeknights.tconstruct.library.tools.nbt.IToolStackView;
import slimeknights.tconstruct.library.tools.nbt.StatsNBT;
import slimeknights.tconstruct.library.tools.stat.ToolStats;
import java.util.Collection;
import java.util.UUID;
import java.util.function.BiConsumer;
/**
* Modifier hook for adding attributes to a tool when in the correct slot.
*/
public interface AttributesModifierHook {
/** UUIDs for armor attributes on held tools */
UUID[] HELD_ARMOR_UUID = new UUID[]{UUID.fromString("00a1a5fe-43b5-4849-8660-de9aa497736a"), UUID.fromString("6776fd7e-4b22-4cdf-a0bc-bb8d2ad1f0bf")};
/**
* Adds attributes from this modifier's effect. Called whenever the item stack refreshes attributes, typically on equipping and unequipping.
* It is important that you return the same list when equipping and unequipping the item.
* <br>
* Alternatives:
* <ul>
* <li>{@link ToolStatsModifierHook}: Limited context, but can affect durability, mining level, and mining speed.</li>
* </ul>
* @param tool Current tool instance
* @param modifier Modifier level
* @param slot Slot for the attributes
* @param consumer Attribute consumer
*/
void addAttributes(IToolStackView tool, ModifierEntry modifier, EquipmentSlot slot, BiConsumer<Attribute,AttributeModifier> consumer);
/**
* Gets attribute modifiers for a weapon with melee capability
* @param tool Tool instance
* @param slot Held slot
* @return Map of attribute modifiers
*/
static Multimap<Attribute,AttributeModifier> getHeldAttributeModifiers(IToolStackView tool, EquipmentSlot slot) {
ImmutableMultimap.Builder<Attribute, AttributeModifier> builder = ImmutableMultimap.builder();
if (!tool.isBroken()) {
// base stats
StatsNBT statsNBT = tool.getStats();
if (slot == EquipmentSlot.MAINHAND && tool.hasTag(TinkerTags.Items.MELEE_WEAPON)) {
builder.put(Attributes.ATTACK_DAMAGE, new AttributeModifier(Item.BASE_ATTACK_DAMAGE_UUID, "tconstruct.tool.attack_damage", statsNBT.get(ToolStats.ATTACK_DAMAGE), AttributeModifier.Operation.ADDITION));
// base attack speed is 4, but our numbers start from 4
builder.put(Attributes.ATTACK_SPEED, new AttributeModifier(Item.BASE_ATTACK_SPEED_UUID, "tconstruct.tool.attack_speed", statsNBT.get(ToolStats.ATTACK_SPEED) - 4d, AttributeModifier.Operation.ADDITION));
}
if (slot.getType() == Type.HAND) {
// shields and slimestaffs can get armor
if (tool.hasTag(TinkerTags.Items.ARMOR)) {
UUID uuid = HELD_ARMOR_UUID[slot.getIndex()];
double value = statsNBT.get(ToolStats.ARMOR);
if (value != 0) {
builder.put(Attributes.ARMOR, new AttributeModifier(uuid, "tconstruct.held.armor", value, AttributeModifier.Operation.ADDITION));
}
value = statsNBT.get(ToolStats.ARMOR_TOUGHNESS);
if (value != 0) {
builder.put(Attributes.ARMOR_TOUGHNESS, new AttributeModifier(uuid, "tconstruct.held.toughness", value, AttributeModifier.Operation.ADDITION));
}
value = statsNBT.get(ToolStats.KNOCKBACK_RESISTANCE);
if (value != 0) {
builder.put(Attributes.KNOCKBACK_RESISTANCE, new AttributeModifier(uuid, "tconstruct.held.knockback_resistance", value, AttributeModifier.Operation.ADDITION));
}
}
// grab attributes from modifiers, only do for hands (other slots would just be weird)
BiConsumer<Attribute,AttributeModifier> attributeConsumer = builder::put;
for (ModifierEntry entry : tool.getModifierList()) {
entry.getHook(ModifierHooks.ATTRIBUTES).addAttributes(tool, entry, slot, attributeConsumer);
}
}
}
return builder.build();
}
/** Merger that runs all hooks */
record AllMerger(Collection<AttributesModifierHook> modules) implements AttributesModifierHook {
@Override
public void addAttributes(IToolStackView tool, ModifierEntry modifier, EquipmentSlot slot, BiConsumer<Attribute,AttributeModifier> consumer) {
for (AttributesModifierHook module : modules) {
module.addAttributes(tool, modifier, slot, consumer);
}
}
}
}