抽奖券

本章涉及内容：AttachedData、物品注册、自定义战利品、自定义战利品生成、运用nbt，本章代码除了注册在startup_scripts其他都在server_scripts内 涉及模组及版本:

1. rhino-forge-2001.2.2-build.18

2. architectury-9.2.14-forge

3. kubejs-forge-2001.6.5-build.14

4. probejs-6.0.1-forge

注册抽奖券

StartupEvents.registry("item",event=>{
    event.create("meng:raffle_ticket");
})

抽奖券的公共文件

// priority: 5

// 抽奖券基础物品列表
const basalItemList = [];
// 抽奖券奖池列表(作为临时抽奖存储用)
let poolItemList = [];
// 抽奖券的类型对象
let ticketTypeObject = {
    basal: basalItemList
};

如果需要添加其他的战利品，可以像下面这样添加

const testItemList = [];
let ticketTypeObject = {
    basal: basalItemList,
    addTest : testItemList
};

抽奖券战利品添加

function addBasalItem(itemId, weight) {
    basalItemList.push({
        itemId: itemId,
        weight: weight
    })
}

addBasalItem('minecraft:diamond', 3);
addBasalItem('minecraft:lapis_lazuli', 5)
addBasalItem('minecraft:emerald', 2)
addBasalItem('minecraft:gold_ingot', 8)
addBasalItem('minecraft:copper_ingot', 20)
addBasalItem('minecraft:iron_ingot', 20)
addBasalItem('minecraft:netherite_ingot', 1)

抽奖券战利品

ServerEvents.genericLootTables(event => {
    for (const key in ticketTypeObject) {
        event.addGeneric("meng:raffle_ticket/" + key,loot=>{
            loot.addPool(pool => {
                ticketTypeObject[key].forEach(value => {
                    pool.addItem(value.itemId).weight(value.weight);
                });
            });
        })
    }
})

开始抽奖

ItemEvents.firstRightClicked("meng:raffle_ticket", event => {
    const player = event.getPlayer();
    const playerAttachedData = player.getData();
    if (playerAttachedData.get("lotteryState")) {
        player.tell(Text.translate("text.meng.lottery_state"))
        // playerAttachedData.put("lotteryState",false);
        return;
    }
    const item = event.getItem();
    const itemNbt = item.getNbt();
    let ticketType;
    try {
        ticketType = itemNbt.getString("ticketType");
    } catch (e) {
        ticketType = "basal";
    }
    let itemList = ticketTypeObject[ticketType];
    if (itemList == undefined) {
        itemList = ticketTypeObject.basal;
    }
    let uuid = player.getUuid()
    let obj = {}
    obj[uuid] = MengUtils.ArrUtil.randArr(addItemList(itemList))
    poolItemList.push(obj)

    let lootData = event.getServer().getLootData();
    let itemLoot = lootData
        .getLootTable("meng:raffle_ticket/basal")
        .getRandomItems(
            new $LootParams(event.getLevel())
                .create($LootContextParamSets.EMPTY)
        )[0];
    let poolList = poolItemList.find(value => Object.keys(value).includes(uuid.toString()))[uuid];
    poolList[poolList.length - 2] = itemLoot.id;
    
    playerAttachedData.add("lotteryState", true);
    playerAttachedData.add("poolCountMax", poolList.length);
    playerAttachedData.add("count", 0);
    item.count--;
})

function addItemList(itemList) {
    let list = []
    itemList.forEach(value => {
        for (let index = 0; index < value.weight; index++) {
            list.push(value.itemId);
        }
    });
    let listTemp = list;

    while (true) {
        if (list.length >= raffleTicketConfig.maxCount) {
            break;
        }
        list = list.concat(MengUtils.ArrUtil.randArr(listTemp));
    }
    return list;
}

抽奖动画

PlayerEvents.tick(event => {
    let player = event.getPlayer();
    let playerAttachedData = player.getData();
    let tickCount = event.getServer().getTickCount();
    if (playerAttachedData.get("lotteryState")) {
        let countMax = playerAttachedData.get("poolCountMax");
        let count = playerAttachedData.get("count");
        let itemShow = itemShowFunc(player,count,countMax);
        if (countMax - count <= 3) {
            if (tickCount % 10 == 0){
                if (count >= countMax){
                    playerAttachedData.add("lotteryState",false);
                    let poolList = poolItemList.find(value => Object.keys(value).includes(player.getUuid().toString()))[player.getUuid()];
                    player.give(Item.of(poolList[count-2]));
                    player.playNotifySound("minecraft:entity.player.levelup","players",1,1)
                    paintHide(player)
                    poolList = [];
                }else{
                    paintShow(player,itemShow.oneItemId,itemShow.twoItemId,itemShow.threeItemId);
                    playerAttachedData.add("count", count + 1)
                    player.playNotifySound("minecraft:entity.experience_orb.pickup","players",1,1)
                }
            }
        } else if (countMax - count <= 10) {
            if (tickCount % 5 == 0){
                paintShow(player,itemShow.oneItemId,itemShow.twoItemId,itemShow.threeItemId);
                playerAttachedData.add("count", count + 1)
                player.playNotifySound("minecraft:entity.experience_orb.pickup","players",1,2)
            }
        } else {
                paintShow(player,itemShow.oneItemId,itemShow.twoItemId,itemShow.threeItemId);
                playerAttachedData.add("count", count + 1)
                player.playNotifySound("minecraft:entity.experience_orb.pickup","players",1,2)
        }
        
    }
})

function itemShowFunc(player,count,max) {
    let uuid = player.getUuid();
    let poolList = poolItemList.find(value => Object.keys(value).includes(uuid.toString()))[uuid];
    let two_item = poolList[Number(count)];
    let one_item = poolList[count - 1 == -1 ? max - 1 : count - 1];
    let three_item;
    if (count - 2 == -2) {
        three_item = poolList[max - 2]
    } else if (count - 2 == -1) {
        three_item = poolList[max - 1]
    } else if (count - 2 >= 0) {
        three_item = poolList[count - 2]
    }
    return {
        oneItemId:one_item,
        twoItemId:two_item,
        threeItemId: three_item
    }
}

function paintHide(player) {
    player.paint({
        item_one: {
            visible: false
        }, item_two: {
            visible: false
        }, item_three: {
            visible: false
        }
    })
}

function paintShow(player, one_item, two_item, three_item) {
    player.paint({
        item_one: {
            type: "item",
            item: two_item,
            visible: true,
            w: raffleTicketConfig.sideItemShowSize,
            h: raffleTicketConfig.sideItemShowSize,
            x: "$screenW/2-" + raffleTicketConfig.itemShowInterval,
            y: "$screenH/2+sin(time()*0.5)*$screenH/32",
        },
        item_two: {
            type: "item",
            item: one_item,
            visible: true,
            w: raffleTicketConfig.middleItemShowSize,
            h: raffleTicketConfig.middleItemShowSize,
            x: "$screenW/2",
            y: "$screenH/2+sin(time()*0.5)*$screenH/32",
        },
        item_three: {
            type: "item",
            item: three_item,
            visible: true,
            w: raffleTicketConfig.sideItemShowSize,
            h: raffleTicketConfig.sideItemShowSize,
            x: "$screenW/2+" + raffleTicketConfig.itemShowInterval,
            y: "$screenH/2+sin(time()*0.5)*$screenH/32",
        }
    })
}

一些注意事项

1. 战利品通过不同的物品携带的nbt里的ticketType不同来进行不同的奖池抽奖，做了简单的防止找不到nbt所以有一个默认的奖池为basalItemList，如果不需要添加其他奖池的可以直接修改抽奖券战利品添加里的代码

2. 该项目只是作为示例，很多地方并不是最优解，可自行进行解决

3. 如果对该项目代码部分不满可以将修改好的代码上传至gitee项目仓库