如何在 love2d 中随机绘制一些东西

Question

我目前正在尝试使用 love2d 创建打砖机，但问题是每当使用 math.random() 生成爱情应用程序保留的随机砖块时运行多次，砖块不断移动。

编辑：所以我想在特定列生成砖块，但行应该随机 selected。我的基本想法是执行 math.random(2) == 1 然后使用 for 循环绘制砖块，但问题是它每秒得到 updated/drawn 而砖块一直在 flickering/moving。我只是想在执行代码时随机（仅随机select y坐标我的x坐标是固定的）绘制一次但它一直在闪烁

我面临的问题 - https://youtu.be/AJB5vH7yfHc

我的代码

    for y = 0, VIRTUAL_HEIGHT- 4, 10 do
        if math.random(2) == 1 then
            love.graphics.rectangle('line', VIRTUAL_WIDTH - 10, y, 5, 10)
        end
    end

Answer 1

在love.load()

中生成块位置

--VIRTUAL_WIDTH, VIRTUAL_HEIGHT  = love .graphics .getDimensions( )

block_pos  = {}  --  table to store block positions
rows, columns  = 5, 8  --  you decide how many

chance_of_block  = 75  --  % chance of placing a block

block_width  = math .floor( VIRTUAL_WIDTH /columns )
block_height  = math .floor( VIRTUAL_HEIGHT /rows )

for  row = 0,  rows -1  do
    for  col = 0,  columns -1  do

        if love .math .random() *100 <= chance_of_block then
            local xpos  = col *block_width
            local ypos  = row *block_height

            local red   = love .math .random()
            local green = love .math .random()
            local blue  = love .math .random()

            block_pos[ #block_pos +1 ] = { x = xpos,  y = ypos,  r = red,  g = green,  b = blue }
        end  --  rand

    end  --  #columns
end  --  #rows

（已编辑：实现的行和列应从 0 索引开始，因此它们在屏幕上排列）

然后用love.draw()

画出来

for b = 1, #block_pos do
    local block  = block_pos[b]

    love .graphics .setColor( block.r,  block.g,  block.b )
    love .graphics .rectangle( 'fill',  block.x,  block.y,  block_width,  block_height )
end  --  #block_pos

Answer 2

好的，在你编辑问题后，这听起来更像你在说什么。只需取出 #column 循环，并将其设置为在最后一列上创建单元格。

love.load()

--VIRTUAL_WIDTH, VIRTUAL_HEIGHT  = love .graphics .getDimensions()

block_pos  = {}  --  table to store block positions
rows, columns  = 30, 20  --  you decide how many

chance_of_block  = 33  --  % chance of placing a block

block_width  = math .floor( VIRTUAL_WIDTH /columns )
block_height  = math .floor( VIRTUAL_HEIGHT /rows )

col  = columns -1  --  don't loop through columns, just use final column

for  row = 0,  rows -1  do

    if love .math .random() *100 <= chance_of_block then
        local xpos  = col *block_width
        local ypos  = row *block_height

        block_pos[ #block_pos +1 ] = { x = xpos,  y = ypos }
    end  --  rand

end  --  #columns

r, g, b  = 0.5, 0.5, 0.0
love .graphics .setColor( r, g, b )

love.draw()

for b = 1, #block_pos do
    local block  = block_pos[b]

    love .graphics .rectangle( 'line',  block.x,  block.y,  block_width,  block_height )
end  --  #block_pos

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