adding script

resources/PolyZone/EntityZone.lua

@@ -0,0 +1,143 @@
+EntityZone = {}
+-- Inherits from BoxZone
+setmetatable(EntityZone, { __index = BoxZone })
+
+-- Utility functions
+local deg, atan2 = math.deg, math.atan2
+local function GetRotation(entity)
+  local fwdVector = GetEntityForwardVector(entity)
+  return deg(atan2(fwdVector.y, fwdVector.x))
+end
+
+local function _calculateMinAndMaxZ(entity, dimensions, scaleZ, offsetZ)
+  local min, max = dimensions[1], dimensions[2]
+  local minX, minY, minZ, maxX, maxY, maxZ = min.x, min.y, min.z, max.x, max.y, max.z
+
+  -- Bottom vertices
+  local p1 = GetOffsetFromEntityInWorldCoords(entity, minX, minY, minZ).z
+  local p2 = GetOffsetFromEntityInWorldCoords(entity, maxX, minY, minZ).z
+  local p3 = GetOffsetFromEntityInWorldCoords(entity, maxX, maxY, minZ).z
+  local p4 = GetOffsetFromEntityInWorldCoords(entity, minX, maxY, minZ).z
+
+  -- Top vertices
+  local p5 = GetOffsetFromEntityInWorldCoords(entity, minX, minY, maxZ).z
+  local p6 = GetOffsetFromEntityInWorldCoords(entity, maxX, minY, maxZ).z
+  local p7 = GetOffsetFromEntityInWorldCoords(entity, maxX, maxY, maxZ).z
+  local p8 = GetOffsetFromEntityInWorldCoords(entity, minX, maxY, maxZ).z
+
+  local entityMinZ = math.min(p1, p2, p3, p4, p5, p6, p7, p8)
+  local entityMaxZ = math.max(p1, p2, p3, p4, p5, p6, p7, p8)
+  return BoxZone.calculateMinAndMaxZ(entityMinZ, entityMaxZ, scaleZ, offsetZ)
+end
+
+-- Initialization functions
+local function _initDebug(zone, options)
+  if options.debugBlip then zone:addDebugBlip() end
+  if not options.debugPoly and not options.debugBlip then
+    return
+  end
+
+  Citizen.CreateThread(function()
+    local entity = zone.entity
+    local shouldDraw = options.debugPoly
+    while not zone.destroyed do
+      UpdateOffsets(entity, zone)
+      if shouldDraw then zone:draw(false) end
+      Citizen.Wait(0)
+    end
+  end)
+end
+
+function EntityZone:new(entity, options)
+  assert(DoesEntityExist(entity), "Entity does not exist")
+
+  local min, max = GetModelDimensions(GetEntityModel(entity))
+  local dimensions = {min, max}
+
+  local length = max.y - min.y
+  local width = max.x - min.x
+  local pos = GetEntityCoords(entity)
+
+  local zone = BoxZone:new(pos, length, width, options)
+  if options.useZ == true then
+    options.minZ, options.maxZ = _calculateMinAndMaxZ(entity, dimensions, zone.scaleZ, zone.offsetZ)
+  else
+    options.minZ = nil
+    options.maxZ = nil
+  end
+  zone.entity = entity
+  zone.dimensions = dimensions
+  zone.useZ = options.useZ
+  zone.damageEventHandlers = {}
+  zone.isEntityZone = true
+  setmetatable(zone, self)
+  self.__index = self
+  return zone
+end
+
+function EntityZone:Create(entity, options)
+  local zone = EntityZone:new(entity, options)
+  _initDebug(zone, options)
+  return zone
+end
+
+function UpdateOffsets(entity, zone)
+  local pos = GetEntityCoords(entity)
+  local rot = GetRotation(entity)
+  zone.offsetPos = pos.xy - zone.startPos
+  zone.offsetRot = rot - 90.0
+
+  if zone.useZ then
+    zone.minZ, zone.maxZ = _calculateMinAndMaxZ(entity, zone.dimensions, zone.scaleZ, zone.offsetZ)
+  end
+  if zone.debugBlip then SetBlipCoords(zone.debugBlip, pos.x, pos.y, 0.0) end
+end
+
+
+-- Helper functions
+function EntityZone:isPointInside(point)
+  local entity = self.entity
+  if entity == nil then
+    print("[PolyZone] Error: Called isPointInside on Entity zone with no entity {name=" .. self.name .. "}")
+    return false
+  end
+
+  UpdateOffsets(entity, self)
+  return BoxZone.isPointInside(self, point)
+end
+
+function EntityZone:onEntityDamaged(onDamagedCb)
+  local entity = self.entity
+  if not entity then
+    print("[PolyZone] Error: Called onEntityDamage on Entity Zone with no entity {name=" .. self.name .. "}")
+    return
+  end
+
+  self.damageEventHandlers[#self.damageEventHandlers + 1] = AddEventHandler('gameEventTriggered', function (name, args)
+    if self.destroyed or self.paused then
+      return
+    end
+
+    if name == 'CEventNetworkEntityDamage' then
+      local victim, attacker, victimDied, weaponHash, isMelee = args[1], args[2], args[4], args[5], args[10]
+      --print(entity, victim, attacker, victimDied, weaponHash, isMelee)
+      if victim ~= entity then return end
+      onDamagedCb(victimDied == 1, attacker, weaponHash, isMelee == 1)
+    end
+  end)
+end
+
+function EntityZone:destroy()
+  for i=1, #self.damageEventHandlers do
+    print("Destroying damageEventHandler:", self.damageEventHandlers[i])
+    RemoveEventHandler(self.damageEventHandlers[i])
+  end
+  self.damageEventHandlers = {}
+  PolyZone.destroy(self)
+end
+
+function EntityZone:addDebugBlip()
+  local blip = PolyZone.addDebugBlip(self)
+  self.debugBlip = blip
+  return blip
+end