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resources/[tools]/jg-hud/client/cl-nearest-postal.lua

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+-- This is a heavily modified & highly simplified version of nearest postal from @DevBlocky: https://github.com/DevBlocky/nearest-postal
+-- just for the purposes of displaying it in the HUD, as the exports for getting distance to nearest postal wasn't available.
+-- This IS NOT designed to be a replacement for nearest-postal, as it does not include commands for waypoints etc. I recommend still
+-- using nearest-postal alongside JG HUD!
+
+---- ORIGINAL LICENSE ----
+
+-- Copyright (c) 2019 BlockBa5her
+
+-- Permission is hereby granted, free of charge, to any person obtaining a copy
+-- of this software and associated documentation files (the "Software"), to deal
+-- in the Software without restriction, including without limitation the rights
+-- to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+-- copies of the Software, and to permit persons to whom the Software is
+-- furnished to do so, subject to the following conditions:
+
+-- The above copyright notice and this permission notice shall be included in all
+-- copies or substantial portions of the Software.
+
+-- THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+-- IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+-- FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+-- AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+-- LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+-- OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+-- SOFTWARE.
+
+---@type boolean
+local postalsLoaded = false
+
+CreateThread(function()
+  if not Config.ShowNearestPostal then return end
+
+
+    local jsonData = LoadResourceFile(GetCurrentResourceName(), Config.NearestPostalsData)
+    if not jsonData then 
+      return DebugPrint(("[ERROR] Could not find postals data file: %s"):format(Config.NearestPostalsData)) 
+    end
+    
+    local postals = json.decode(jsonData)
+ 
+    if not postals then
+      return DebugPrint("[ERROR] Failed to decode postals JSON data")
+    end
+
+    for i = 1, #postals do
+      local postal = postals[i]
+      lib.grid.addEntry({
+        coords = vec(postal.x, postal.y),
+        code = postal.code,
+        radius = 1
+      })
+    end
+    
+    postalsLoaded = true
+    DebugPrint(("Loaded %d postal codes into ox_lib grid system"):format(#postals))
+end)
+
+---@param pos vector
+---@return {code: string, dist: number} | false
+function GetNearestPostal(pos)
+  if not Config.ShowNearestPostal or not postalsLoaded then 
+    return false 
+  end
+
+  local nearbyEntries = lib.grid.getNearbyEntries(pos)
+  if not nearbyEntries or #nearbyEntries == 0 then
+    return false
+  end
+
+  local closestEntry, minDist
+
+  -- Check only nearby entries from grid
+  for i = 1, #nearbyEntries do
+    local entry = nearbyEntries[i]
+    local dx = pos.x - entry.coords.x
+    local dy = pos.y - entry.coords.y
+    local dist = math.sqrt(dx * dx + dy * dy)
+    
+    if not minDist or dist < minDist then
+      closestEntry = entry
+      minDist = dist
+    end
+  end
+
+  if not closestEntry then
+    return false
+  end
+
+  return {
+    code = closestEntry.code,
+    dist = math.round(Framework.Client.ConvertDistance(minDist, UserSettingsData?.distanceMeasurement))
+  }
+end