84 lines
1.9 KiB
Lua
84 lines
1.9 KiB
Lua
-- Edit By ChenGY
|
|
-- 记录玩家位置，距离计算
|
|
|
|
Location = {
|
|
longitude = 0,
|
|
latitude = 0,
|
|
default = true,
|
|
address = nil,
|
|
}
|
|
|
|
local M = Location
|
|
|
|
function M.new(str)
|
|
local self = {}
|
|
setmetatable(self, {__index = M})
|
|
self:LoadLocation(str)
|
|
if str and str ~= "" then
|
|
self.default = false
|
|
else
|
|
self.default = true
|
|
end
|
|
return self
|
|
end
|
|
|
|
-- 获取详细地址
|
|
function M:GetAddress(obj)
|
|
if self.address then
|
|
obj.text = self.address
|
|
else
|
|
coroutine.start(self.DownloadAddressInfo, self, obj)
|
|
end
|
|
end
|
|
|
|
function M:DownloadAddressInfo(obj)
|
|
-- bd09ll gcj02 wgs84ll
|
|
local coordtype = "&coordtype=wgs84ll"
|
|
-- if Application.platform == RuntimePlatform.Android then
|
|
-- coordtype = ""
|
|
-- end
|
|
local url = string.format("http://api.map.baidu.com/geocoder/v2/?ak=Z6qXIddQtwO8xaKunX4CURbwcV0GLSrG&location=%s,%s&output=json%s", self.latitude, self.longitude, coordtype)
|
|
local www = UnityEngine.WWW(url)
|
|
coroutine.www(www)
|
|
if string.utf8len(www.error) == 0 then
|
|
local txt = www.text
|
|
local json_add = json.decode(txt)
|
|
self.address = json_add.result.formatted_address
|
|
obj.text = self.address
|
|
end
|
|
end
|
|
|
|
-- 计算距离
|
|
function M:CalcDistance(loc)
|
|
local EARTH_RADIUS = 6378.137
|
|
|
|
local radLat1 = math.rad(self.latitude)
|
|
local radLat2 = math.rad(loc.latitude)
|
|
local a = radLat1 - radLat2
|
|
local b = math.rad(self.longitude) - math.rad(loc.longitude)
|
|
|
|
local s = 2 * math.asin(math.sqrt(math.pow(math.sin(a/2),2) + math.cos(radLat1)*math.cos(radLat2)*math.pow(math.sin(b/2),2)))
|
|
s = s * EARTH_RADIUS
|
|
local dist = math.floor(s * 10000 +.5) / 10000
|
|
return dist
|
|
end
|
|
|
|
function M:Location2String()
|
|
if self.default then return "" end
|
|
local str = self.longitude .. "," .. self.latitude
|
|
return str
|
|
end
|
|
|
|
function M:String2Location()
|
|
local loc = string.split(str, ",")
|
|
return loc
|
|
end
|
|
|
|
function M:LoadLocation(str)
|
|
local loc = string.split(str, ",")
|
|
self.longitude = tonumber(loc[1])
|
|
self.latitude = tonumber(loc[2])
|
|
end
|
|
|
|
return M
|