Lua 如何每10秒生成多个对象

如何每10秒生成一个“math.random（1,3）”smile.png，并在左屏幕后删除smile.png

<code>
local physics = require ("physics");
physics.start();

local function listener(me)
 transition.to (me, {time = math.random(1000,4000), x = math.random(10,310), y = -30, onComplete = function()listener(me)end});
end

--Spawning multiple objects in randoms locations
local function spawnsmile()

        local smile = display.newImageRect("smile.png", 45, 45);
        smile:setReferencePoint(display.CenterReferencePoint);
        smile.x = math.random(-10, 400);
        smile.y = -40;
        transition.to( smile, {time = math.random(2000, 8000), x = math.random(-10, 400) , y = 600,});
        physics.addBody(smile, "dynamic", {density = 0.1, bounce = 0.1, friction = .1, radius = 0});

                --Adding touch event
                smile:addEventListener("touch", smile);
end
 tmr = timer.performWithDelay(0, spawnsmile, total_smiles);
<code>

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将计时器更改为每10.000毫秒执行一次，而不是0。而你的侦听器函数并没有真正达到任何目的，请删除它，并将你的转换更改为

    transition.to( smile, {time = math.random(2000, 8000), x = math.random(-10, 400) , y = 600, onComplete = function(obj) obj:removeSelf() obj = nil end});

---

这应该是您希望它做的事=）total_smiles中也需要有一个值，但我猜您在其他地方有它。

您的代码缺少total_smiles值赋值和延迟参数

工作代码：

local physics = require ("physics");
physics.start();

local function listener(me)
    transition.to (me, {time = math.random(1000,4000), x = math.random(10,310), y = -30, onComplete = function()listener(me)end});
end

--Spawning multiple objects in randoms locations
local function spawnsmile()
    local smile = display.newImageRect("Button.png", 45, 45);
    smile:setReferencePoint(display.CenterReferencePoint);
    smile.x = math.random(-10, 400);
    smile.y = -40;
    transition.to( smile, {time = math.random(2000, 8000), x = math.random(-10, 400) , y = 600,});
    physics.addBody(smile, "dynamic", {density = 0.1, bounce = 0.1, friction = .1, radius = 0});

    --Adding touch event
    smile:addEventListener("touch", smile);
end

local total_smiles = 15
tmr = timer.performWithDelay(10000, spawnsmile, total_smiles);

此外，您应该存储对已创建微笑的引用，以便正确地销毁它们，并且不会泄漏内存

和处置：

for i=#smiles,1,-1 do
   smiles[i]:removeSelf()
   smiles[i] = nil
end

---

好的，所以我修改了代码，但它仍然只生成了一个smile.png

local函数spawnsille（）local smile=display.newImageRect（“smile.png”，45,45）；微笑：设置参考点（display.CenterReferencePoint）；smile.x=math.random（-10400）；微笑。y=-40；转换到（smile，{time=math.random（20008000），x=math.random（-10400），y=600，onComplete=function（obj）obj:removeSelf（）obj=nil end}）；addBody（微笑，动态，{密度=0.1，反弹=0.1，摩擦力=0.1，半径=0}）；结束tmr=计时器。性能延迟（10000，生成微笑，总微笑，5）那么你的总微笑值是多少？计时器（tmr）的最后一个参数是它应该执行多少次。尝试将值5赋给total_smiles，看看会发生什么=）
for i=#smiles,1,-1 do
   smiles[i]:removeSelf()
   smiles[i] = nil
end