兵线运营：推塔靠兵不靠人

 fx-minions

local Minions = {}
local KEY = { WAVE = 4 }

local minions = {}
local towerHp = 3000

function MN.SpawnWave()
    for i = 1, KEY.WAVE do
        minions[#minions + 1] = {
            x = SL:GetValue("spawnX") + i * 26,
            hp = 60, side = "blue"
        }
    end
end

function MN.Tick(dt)
    -- 推进
    for _, m in ipairs(minions) do
        m.x = m.x + 40 * dt
        SL:SetActorX(m.id, m.x)
    end
    -- 互耗: 兵线相遇时互相攻击
    for _, m in ipairs(minions) do
        for _, e in ipairs(SL:GetValue("enemyMinions")) do
            if math.abs(m.x - e.x) < 30 then
                e.hp = e.hp - 14 * dt
                m.hp = m.hp - 10 * dt
            end
        end
    end
    -- 清尸: 移除阵亡小兵
    for i = #minions, 1, -1 do
        if minions[i].hp <= 0 then
            SL:PlayBurst(minions[i].x, 160, "coin", 3)
            table.remove(minions, i)
        end
    end
    -- 兵进塔: 塔仇恨优先打兵
    local front = nil
    for _, m in ipairs(minions) do
        if m.x > SL:GetValue("towerRangeX") then
            if not front or m.x > front.x then front = m end
        end
    end
    if front then
        towerHp = towerHp - 12 * dt
        SL:PlayFxAt("tower_hit", 620, 100)
        SL:PlaySfx("tower_attack")
        if towerHp <= 0 then
            SL:PlayFxAt("crystal_explode", 620, 100)
            SL:ShowSystemTips("水晶炸了! 兵线立功")
            SL:SetValue("phase", "win")
        end
    end
end

return MN