How would I recreate the AI of clash royale?

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#1

Hi !
I’ve tried to recreate the AI of clash royale and it’s work but there is a lot of problem, the pathfinding doesn’t count other AI so they they pile up and get stuck, and other little problems, so I ask you to know how you would do this !
Thanks you for the feedback and have a nice day !

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#2

It would be better for everyone if you’d show us your code!
But forget about that.
Here are some simple steps and code to make the AI work.
NOTE: YOU MUST FIX AND MAKE IT WORK WITH YOUR GAME CAUSE I HAVE NO IDEA HOW YOUR GAME LOOKS LIKE!
It’s difficult to write the AI for a Clash of Clans-style game without more information about the gameplay mechanics and the specific behaviors you want the AI to exhibit. However, here is an example of how you could approach implementing AI for units in a Roblox game using decision trees:

function determineAction(unit)
  -- check if the unit is being attacked by an enemy
  if unit.IsUnderAttack then
    -- if the unit is being attacked, prioritize defending
    return "defend"
  end
  -- check if there are any enemy units in range
  local enemyUnits = unit:GetEnemiesInRange()
  if #enemyUnits > 0 then
    -- if there are enemy units in range, prioritize attacking them
    return "attack"
  end
  -- if there are no enemies in range and the unit is not being attacked, look for a target to attack
  local target = findTarget(unit)
  if target then
    -- if a target was found, move towards it
    return "move"
  end
  -- if no action was determined, return "idle"
  return "idle"
end

-- function to find a target for a unit to attack
function findTarget(unit)
  -- search for enemy units in a certain radius around the unit
  local enemyUnits = unit:GetEnemiesInRange(unit.AttackRange)
  -- if there are no enemy units in range, return nil
  if #enemyUnits == 0 then
    return nil
  end
  -- sort the enemy units by distance from the unit
  table.sort(enemyUnits, function(a, b) return (a.Position - unit.Position).Magnitude < (b.Position - unit.Position).Magnitude end)
  -- return the closest enemy unit
  return enemyUnits[1]
end

-- function to execute the action determined by the AI
function executeAction(unit, action)
  if action == "defend" then
    -- code to defend against enemy attacks goes here
  elseif action == "attack" then
    -- code to attack enemy units goes here
  elseif action == "move" then
    -- code to move towards a target goes here
  elseif action == "idle" then
    -- code to idle goes here
  end
end

-- example usage: determine and execute the best action for a unit
local action = determineAction(unit)
executeAction(unit, action)

This code defines three functions: determineAction , which determines the best course of action for a unit based on its surroundings; findTarget , which searches for a target for the unit to attack; and executeAction , which executes the action determined by the AI.

The determineAction function uses a series of conditions to determine the best course of action for the unit, based on whether it is being attacked, whether there are enemy units in range, and whether it has a target to attack. The findTarget function searches for enemy units in a certain radius around the unit and returns the closest one. Finally, the executeAction function executes the action determined by the AI, using a series of if statements to determine which code to run.

This is just one example of how you could implement AI for units in a Roblox game. You may need to adjust the code or add additional functionality!

Now you are on your own. You can’t say u don’t understand since you already wanted to make this kind of AI for your game. You start small if you can’t make complex things. And I do not consider this complex, because I’ve made multiple AI systems in the past and never gave up.

If you need more help then I think It’s better for you to look at tutorials and start small!

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#3

Hi !
I have already make a function to find a target and I can show you the script :

local Character = script.Parent
local EnemyID = tostring((tonumber(Character.Name)-1)^2)
local EnemyTeam = workspace:WaitForChild("T"..EnemyID)
local Left = workspace:WaitForChild("Left"..EnemyID)
local LeftPosition = Left.Position
local Right = workspace:WaitForChild("Right"..EnemyID)
local RightPosition = Right.Position
local Middle = workspace:WaitForChild("Middle"..EnemyID)
local MiddlePosition = Middle.Position

local function FindTower()
	local CharacterPosition = Character.PrimaryPart.Position
	local LeftMagnitude = (CharacterPosition - LeftPosition).Magnitude
	local RightMagnitude = (CharacterPosition - RightPosition).Magnitude
	local MiddleMagnitude = (CharacterPosition - MiddlePosition).Magnitude
	local LeftDestroyed = workspace:FindFirstChild("Left"..EnemyID)
	local RightDestroyed = workspace:FindFirstChild("Right"..EnemyID)
	if LeftDestroyed and RightDestroyed then
		if LeftMagnitude < RightMagnitude then
			return LeftPosition
		else
			return RightPosition
		end
	elseif LeftDestroyed and not RightDestroyed then
		if LeftMagnitude < MiddleMagnitude then
			return LeftPosition
		else
			return MiddlePosition
		end
	elseif not LeftDestroyed and RightDestroyed then
		if RightMagnitude < MiddleMagnitude then
			return RightPosition
		else
			return MiddlePosition
		end
	else
		return MiddlePosition
	end
end

local function FindTarget()
	local CharacterPosition = Character.PrimaryPart.Position
	local EnemiesMagnitude = {}
	for v, Enemy in pairs(EnemyTeam:GetChildren()) do
		local EnemyPosition = Enemy.PrimaryPart.Position
		local EnemyMagnitude = (CharacterPosition - EnemyPosition).Magnitude
		EnemiesMagnitude[Enemy] = EnemyMagnitude
	end
	local SmallestValue = math.huge
	local SmallestKey
	for Key, Value in pairs(EnemiesMagnitude) do
		if Value < SmallestValue then
			SmallestKey, SmallestValue = Key, Value
		end
	end
	if SmallestValue <= 20 then
		local SmallestKeyPosition = SmallestKey.PrimaryPart.Position
		return SmallestKeyPosition
	else
		return FindTower()
	end
end

This script return a position, and after that I was using the position to create a path with pathfinding but the problem is that the AI ignores other AI in the creating of the path !
To know that I go to 2nd waypoint of the waypoints that return and after that I refresh the target !
Sorry for my bad english …
Thanks you for the reply and have a nice day !

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#4

It’s a Clash Royale style !

This text will be blurred

1 Like
#5

I have a update it but I got the same problem, they pile up :

local PathfindingService = game:GetService("PathfindingService")
local Character = script.Parent
local Humanoid = Character.Humanoid
local EnemyID = tostring((tonumber(Character.Name)-1)^2)
local EnemyTeam = workspace:WaitForChild("T"..EnemyID)
local Left = workspace:WaitForChild("Left"..EnemyID)
local LeftPosition = Left.Position
local Right = workspace:WaitForChild("Right"..EnemyID)
local RightPosition = Right.Position
local Middle = workspace:WaitForChild("Middle"..EnemyID)
local MiddlePosition = Middle.Position
local AgentParameters = {Radius = 5, Height = 5, CanJump = false}

Character.Parent = workspace:WaitForChild("T"..Character.Name)

local function FindTarget()
	local CharacterPosition = Character.PrimaryPart.Position
	local EnemiesMagnitude = {}
	for v, Enemy in pairs(EnemyTeam:GetChildren()) do
		local EnemyPosition = Enemy.PrimaryPart.Position
		local EnemyMagnitude = (CharacterPosition - EnemyPosition).Magnitude
		EnemiesMagnitude[Enemy] = EnemyMagnitude
	end
	local SmallestValue = math.huge
	local SmallestKey
	for Key, Value in pairs(EnemiesMagnitude) do
		if Value < SmallestValue then
			SmallestKey, SmallestValue = Key, Value
		end
	end
	if SmallestValue <= 20 then
		local SmallestKeyPosition = SmallestKey.PrimaryPart.Position
		return SmallestKeyPosition
	else
		local LeftMagnitude = (CharacterPosition - LeftPosition).Magnitude
		local RightMagnitude = (CharacterPosition - RightPosition).Magnitude
		local MiddleMagnitude = (CharacterPosition - MiddlePosition).Magnitude
		local LeftDestroyed = workspace:FindFirstChild("Left"..EnemyID)
		local RightDestroyed = workspace:FindFirstChild("Right"..EnemyID)
		if LeftDestroyed and RightDestroyed then
			if LeftMagnitude < RightMagnitude then
				return LeftPosition
			else
				return RightPosition
			end
		elseif LeftDestroyed and not RightDestroyed then
			if LeftMagnitude < MiddleMagnitude then
				return LeftPosition
			else
				return MiddlePosition
			end
		elseif not LeftDestroyed and RightDestroyed then
			if RightMagnitude < MiddleMagnitude then
				return RightPosition
			else
				return MiddlePosition
			end
		else
			return MiddlePosition
		end
	end
end

local function NextWaypoint()
	local CharacterPosition = Character.PrimaryPart.Position
	local Magnitude = (CharacterPosition - FindTarget()).Magnitude
	if Magnitude > 5 then
		local Path = PathfindingService:CreatePath(AgentParameters)
		local Position = FindTarget()
		local EndPosition = Vector3.new(Position.X, 10, Position.Z)
		Path:ComputeAsync(CharacterPosition, EndPosition)
		local Waypoints = Path:GetWaypoints()
		if Waypoints[2].Position then
			local TargetPosition = Waypoints[2].Position
			return TargetPosition
		end
	else
		return CharacterPosition
	end
end

while wait() do
	Humanoid:MoveTo(NextWaypoint())
end

Here a picture of the problem :

Problem.PNG
Problem.PNG1090×521 56.1 KB

Thanks you for the reply and have a nice day !

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