如何将lua中的图片排列成网格状？

Question

我正在学习 lua，我想用一些特定的 x 和 y 坐标排列我的气泡图片，这是我目前的代码，我的 j 和 i 的值只增加 1 而不是+29，我知道我缺乏一些知识，所以任何帮助将不胜感激

local background = display.newImageRect("blueBackground.png",642, 1040)
background.x = display.contentCenterX
background.y = display.contentCenterY

local x = 15
local y=15


for i=15,25 do
  for j=15, 25 do
    local bubble = display.newImageRect("bubble.png", 23,23)
    bubble.x = i
    bubble.y = j

    j = j + 29
    print("j",j)


   end
  i = i + 29
  print("i",i)
end

Answer 1

这应该对你有帮助。

来自 Lua documentation

The for statement has two variants: the numeric for and the generic for.

A numeric for has the following syntax:
for var=exp1,exp2,exp3 do
  something
end
That loop will execute something for each value of var from exp1 to exp2, using exp3 as the step to increment var. This third expression is optional; when absent, Lua assumes one as the step value. As typical examples of such loops, we have
for i=1,f(x) do print(i) end

for i=10,1,-1 do print(i) end

使用

for i=15, 29*10+15, 29 do
  for j=15, 29*10+15, 29 do
    local bubble = display.newImageRect("bubble.png", 23,23)
    bubble.x = i
    bubble.y = j

    print("j",j)
   end

   print("i",i)
end

或

for i=0, 10 do
  for j=0, 10 do
    local bubble = display.newImageRect("bubble.png", 23,23)
    bubble.x = 15 + i * 29
    bubble.y = 15 + j * 29
...

如何将lua中的图片排列成网格状？

How to arrange picture in lua like a grid?

lua

coronasdk