Block placement system not positioning correctly

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#21

Like this:
image
spawn on top of the surface

Video of the current code:


It spawns half way inside.

#22

The attachment has the wrong orientation. See the picture I posted. Yellow arrow should point out of the surface.

#23

I tried it but it didn’t work. It didn’t change anything.
image

#24

Anything wrong with my code?

local rayOrigin = characterPrimary.Position
local rayDirection = (characterPrimary.CFrame.LookVector - characterPrimary.CFrame.UpVector * placeBlockAngle).Unit * 8
local raycastResult = workspace:Raycast(rayOrigin, rayDirection, placeBlockRaycastParams)

if raycastResult then
	local hitPosition = raycastResult.Position
	local hitPart = raycastResult.Instance

	local surfaceCFrame, surfaceLocalPosition = placer.SnapSurfaceCFrame(raycastResult)
	local ppSpaceAttachmentCFrame = VisualBlock.CFrame:ToObjectSpace(VisualBlock.HandleAttachment.WorldCFrame)
	surfaceLocalPosition = surfaceCFrame * ppSpaceAttachmentCFrame:Inverse()
	VisualBlock.CFrame = surfaceLocalPosition
end
#25

You need to use the correction rotation for attachments:

local rayOrigin = characterPrimary.Position
local rayDirection = (characterPrimary.CFrame.LookVector - characterPrimary.CFrame.UpVector * placeBlockAngle).Unit * 8
local raycastResult = workspace:Raycast(rayOrigin, rayDirection, placeBlockRaycastParams)

if raycastResult then
	local hitPosition = raycastResult.Position
	local hitPart = raycastResult.Instance

	local surfaceCFrame, surfaceLocalPosition = placer.SnapSurfaceCFrame(raycastResult)

	 --Edit
	local correctionRotation = CFrame.Angles(0, math.pi / 2, 0)
	local ppSpaceAttachmentCFrame = draggedModel.PrimaryPart.CFrame:ToObjectSpace(attachmentWorldCFrame * correctionRotation)

	surfaceLocalPosition = surfaceCFrame * ppSpaceAttachmentCFrame:Inverse()
	VisualBlock.CFrame = surfaceLocalPosition
end
#26

Nice! It works very good! Thanks!

1 Like
#27

Does it also prevent it from placing it inside other blocks?

#28

No, you would need separate checking for that. You should find an option to do that which is the minimum work needed for your case. It looks like you might have a grid system in your game which can make this significantly easier. If thats the case make another thread and ask about that there.

#29

Fixed it by using GetTouchingParts!

#30

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