I’m currently working on a view cone system for my game enemies. I’m having trouble calculating the X and Y position of each ray cast target point. I’ve tried multiple equations but almost always end up with a circle of parts around the origin.
The code should take an origin part, a radius, and an angle. It should generate a set amount of ray target positions within the angle from the part’s look vector. My most recent code looks like this:
local radius = 30
local angle = 30
local rayCount = angle/2
for i = 1,rayCount,1 do
local angle = i * (((math.pi * radius * angle) / 180) / rayCount)
local x = orininPart.Position.X + (radius * math.cos(angle))
local z = orininPart.Position.Z + (radius * math.sin(angle))
local targetPosition: Vector3 = (Vector3.new(x,0,z))
--local targetPosition: Vector3 = (orininPart.CFrame * CFrame.new(x,0,y)).Position
--local raycast = workspace:Raycast(orininPart.Position,(targetPosition - orininPart.Position).Unit * radius,castData.rayParams or RAY_PARAMS)
--visualizeCast(raycast,orininPart.Position,targetPosition)
Utility:CreateObject("Part",{
Color = Color3.fromRGB(255, 0, 0),
Anchored = true,
CanCollide = false,
CanQuery = false,
CanTouch = false,
CastShadow = false,
Material = Enum.Material.Neon,
Size = Vector3.new(1,1,1),
Position = targetPosition,
Parent = workspace
})
end
Right now I’m simply making a part at the position for proof of concept. An amazing drawing of the ideal result:
If any math people have a solution that would be awesome, thanks.
This should work. I get it’s been two years but this may help anyone else trying this same thing.
local head = workspace.Target.Head
local radius = 60
local angle = 60
local rayCount = angle
for i = -rayCount/2,rayCount/2,1 do
local angle = math.rad(-90) + i * ((angle / radius) / rayCount)
local x = (radius * math.cos(angle))
local z = (radius * math.sin(angle))
local targetCF = (head.CFrame * CFrame.new(x,0,z))
local rayparams = RaycastParams.new()
rayparams.FilterDescendantsInstances = {character}
rayparams.FilterType = Enum.RaycastFilterType.Blacklist
local ray = workspace:Raycast(head.Position, targetCF.Position - head.Position, rayparams)
if ray then
local Part = Instance.new("Part")
Part.Color = Color3.fromRGB(255, 255, 255)
Part.Transparency = 0.99
Part.Anchored = true
Part.CanCollide = false
Part.CanQuery = false
Part.CanTouch = false
Part.CastShadow = false
Part.Material = Enum.Material.Neon
Part.Size = Vector3.new(1,4, (head.Position-ray.Position).Magnitude)
Part.CFrame = CFrame.lookAt(head.Position, ray.Position) * CFrame.new(0,0,-(head.Position-ray.Position).Magnitude/2)
Part.Parent = character
Part.Massless = true
else
local Part = Instance.new("Part")
Part.Color = Color3.fromRGB(255, 255, 255)
Part.Transparency = 0.99
Part.Anchored = true
Part.CanCollide = false
Part.CanQuery = false
Part.CanTouch = false
Part.CastShadow = false
Part.Material = Enum.Material.Neon
Part.Size = Vector3.new(1,4, (head.Position-targetCF.Position).Magnitude)
Part.CFrame = CFrame.lookAt(head.Position, targetCF.Position) * CFrame.new(0,0,-(head.Position-targetCF.Position).Magnitude/2)
Part.Parent = character
Part.Massless = true
end
end
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