[HELP] Click on water // fishing system

[Steve Scott]

Hello, 

I want to create a fishing system but I have to know, how can I calculate the position of the cursor when the player clicks on the water and how can I get if he clicks on the water or just on the ground, because at this point I want to create an object at the top of the water. 

Thanks in advance! ?

[SycroX]

getCursorPosition

idk if there's a way to check if the player click on a water or  on a ground but you can use this function to bring the cursor's position

[Addlibs]

You can getWorldFromScreenPosition with getCursorPosition to get the ground that's been clicked on, and then testLineAgainstWater from camera position to the ground you clicked to determine whether there was water in the way and the precise x, y and z position where water was found

[Pirulax]

Actually:

function getCursorPosAtHeight(h)
    --// Calculate the cursorposition at the v3StartAz.z height.
  local v3CamPos = getCamera():getPosition()
    local v3Unit = v3CamPos-Vector3(getWorldFromScreenPosition(v2CursorPos.x, v2CursorPos.y, 1))--// Calculate how much going down 1 depth effects our z
    local zDistance = (v3CamPos.z-h)/v3Unit.z --// Get the height between the wanted height and the cam and devide it by the v3Unit.z, so we get how much units we need
    return Vector3(v3CamPos.x-v3Unit.x*zDistance, v3CamPos.y-v3Unit.y*zDistance, h)--// Calculate the cursor position at the given height.
end

Water is always at height 0.
Now, to test that the user really clicked on water just use the mentioned function.
 

testLineAgainstWater(getCamera():getPosition(), getWorldFromScreenPosition(v2CursorPos, 300))

If this returns true then he clicked at water.
To get the water height juse use

getCursorPosAtHeight(0)

 

Edited July 29, 2018 by Pirulax

[Steve Scott]

On 2018. 07. 29. at 14:55, Pirulax said:

Actually:

function getCursorPosAtHeight(h)
    --// Calculate the cursorposition at the v3StartAz.z height.
  local v3CamPos = getCamera():getPosition()
    local v3Unit = v3CamPos-Vector3(getWorldFromScreenPosition(v2CursorPos.x, v2CursorPos.y, 1))--// Calculate how much going down 1 depth effects our z
    local zDistance = (v3CamPos.z-h)/v3Unit.z --// Get the height between the wanted height and the cam and devide it by the v3Unit.z, so we get how much units we need
    return Vector3(v3CamPos.x-v3Unit.x*zDistance, v3CamPos.y-v3Unit.y*zDistance, h)--// Calculate the cursor position at the given height.
end

Water is always at height 0.
Now, to test that the user really clicked on water just use the mentioned function.
 

testLineAgainstWater(getCamera():getPosition(), getWorldFromScreenPosition(v2CursorPos, 300))

If this returns true then he clicked at water.
To get the water height juse use

getCursorPosAtHeight(0)

 

This getCursorPosAtHeight function only works if I create the object at client side but I want to bring it to server side 

Edited July 30, 2018 by tacsa

[SycroX]

3 minutes ago, tacsa said:

This getCursorPosAtHeight function only works if I create the object at client side but I want to bring it to server side 

trigger Client/Server Event

[Steve Scott]

11 minutes ago, #َxLysandeR said:

trigger Client/Server Event

Yes, I know ? but for some reason it doesn’t work