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lua - 这个lua代码可以写得更好吗？

问题描述

下面的代码能否重构得更简洁或更清晰？我还在下面附上了一张图片，以帮助说明我的想法。

    local playerAreaPos = {
    {x = playerPos.x, y = playerPos.y - 1, z = playerPos.z}, -- NORTH
    {x = playerPos.x, y = playerPos.y + 1, z = playerPos.z}, -- SOUTH
    {x = playerPos.x + 1, y = playerPos.y, z = playerPos.z}, -- EAST
    {x = playerPos.x - 1, y = playerPos.y, z = playerPos.z}, -- WEST

    {x = playerPos.x - 1, y = playerPos.y + 1, z = playerPos.z}, -- SOUTH-WEST
    {x = playerPos.x + 1, y = playerPos.y + 1, z = playerPos.z}, -- SOUTH-EAST
    {x = playerPos.x - 1, y = playerPos.y - 1, z = playerPos.z}, -- NORTH-WEST
    {x = playerPos.x + 1, y = playerPos.y - 1, z = playerPos.z} -- NORTH-EAST
}

local posTable = {
    {x = playerPos.x, y = playerPos.y - 2, z = playerPos.z, dir = "NORTH"},
    {x = playerPos.x, y = playerPos.y - 3, z = playerPos.z, dir = "NORTH"},
    {x = playerPos.x, y = playerPos.y + 2, z = playerPos.z, dir = "SOUTH"},
    {x = playerPos.x, y = playerPos.y + 3, z = playerPos.z, dir = "SOUTH"},

    {x = playerPos.x + 2, y = playerPos.y, z = playerPos.z, dir = "EAST"},
    {x = playerPos.x + 3, y = playerPos.y, z = playerPos.z, dir = "EAST"},
    {x = playerPos.x - 2, y = playerPos.y, z = playerPos.z, dir = "WEST"},
    {x = playerPos.x - 3, y = playerPos.y, z = playerPos.z, dir = "WEST"},

    {x = playerPos.x - 2, y = playerPos.y - 2, z = playerPos.z, dir = "NORTH_WEST"},
    {x = playerPos.x - 3, y = playerPos.y - 3, z = playerPos.z, dir = "NORTH_WEST"},
    {x = playerPos.x + 2, y = playerPos.y - 2, z = playerPos.z, dir = "NORTH_EAST"},
    {x = playerPos.x + 3, y = playerPos.y - 3, z = playerPos.z, dir = "NORTH_EAST"},
    {x = playerPos.x - 2, y = playerPos.y + 2, z = playerPos.z, dir = "SOUTH_WEST"},
    {x = playerPos.x - 3, y = playerPos.y + 3, z = playerPos.z, dir = "SOUTH_WEST"},
    {x = playerPos.x + 2, y = playerPos.y + 2, z = playerPos.z, dir = "SOUTH_EAST"},
    {x = playerPos.x + 3, y = playerPos.y + 3, z = playerPos.z, dir = "SOUTH_EAST"}
}

for i = 1, #posTable do
    if targetPos == Position(posTable[i]) then
        if posTable[i].dir == "NORTH_EAST" then
            print("TELEPORT TO: ", playerAreaPos[8].x, playerAreaPos[8].y)
        elseif posTable[i].dir == "NORTH_WEST" then
            print("TELEPORT TO: ", playerAreaPos[7].x, playerAreaPos[7].y)
        elseif posTable[i].dir == "NORTH" then
            print("TELEPORT TO: ", playerAreaPos[1].x, playerAreaPos[1].y)
        elseif posTable[i].dir == "SOUTH_WEST" then
            print("TELEPORT TO: ", playerAreaPos[5].x, playerAreaPos[5].y)
        elseif posTable[i].dir == "SOUTH_EAST" then
            print("TELEPORT TO: ", playerAreaPos[6].x, playerAreaPos[6].y)
        elseif posTable[i].dir == "SOUTH" then
            print("TELEPORT TO: ", playerAreaPos[2].x, playerAreaPos[2].y)
        elseif posTable[i].dir == "EAST" then
            print("TELEPORT TO: ", playerAreaPos[3].x, playerAreaPos[3].y)
        elseif posTable[i].dir == "WEST" then
            print("TELEPORT TO: ", playerAreaPos[4].x, playerAreaPos[4].y)
        end
    end
end

此功能的目的是将敌人从 postTable 传送到 playerAreaPos，同时确保他们在相应的线内传送，这意味着如果他们在主角以北 3 个方格，他们将被传送到主角以北 1 个方格

标签： lualua-table

解决方案

local enemyPos = {x = 11, y = 22, z = 33}
local playerPos = {x = 10, y = 20, z = 30}
local beam_length = 3

if enemyPos.z == playerPos.z then
   local dx = enemyPos.x - playerPos.x
   local dy = enemyPos.y - playerPos.y
   local ax, ay = math.abs(dx), math.abs(dy)
   local len_max, len_min = math.max(ax, ay), math.min(ax, ay)
   if len_max >= 2 and len_max <= beam_length and len_min % len_max == 0 then
      print("TELEPORT TO: ", playerPos.x + dx / len_max, playerPos.y + dy / len_max)
   end
end

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