GetGroundPosition: Difference between revisions

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{{Needs_Checking|what's the maximum distance from the player we can check?}}
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This function gets the Z level of the highest ground below a point. It is required that the point is near enough to the local player so that it's within the area where world map data is loaded.
This function gets the Z level of the highest ground below a point. It is required that the point is near enough to the local player so that it's within the area where world map data is loaded.

Revision as of 12:33, 2 August 2007

This function gets the Z level of the highest ground below a point. It is required that the point is near enough to the local player so that it's within the area where world map data is loaded.

Syntax

float getGroundPosition ( float x, float y, float z )

Required Arguments

  • x: A floating point number representing the X world coordinate of the point.
  • y: A floating point number representing the Y world coordinate of the point.
  • z: A floating point number representing the Z world coordinate of the point.

Returns

Returns a float with the highest ground-level Z coord if parameters are valid, 0 if the point you tried to test is outside the loaded world map, false otherwise.

Example

This clientside function determines if a player is under a ceiling or not. 

function isPlayerUnderCover ( thePlayer )
	--we get the player's position
	local px, py, pz = getElementPosition ( thePlayer )
	--we'll check for ground level at the player's position, and also 500 units over him.
	--if these ground levels match, it must mean there were no obstacles (such as a ceiling) over the player,
	if getGroundPosition ( px, py, pz ) == getGroundPosition ( px, py, pz + 500 ) then
		-- so the player is not under cover
		return false
	--otherwise, there was an object over him,
	else
		-- so the player is under cover
		return true
	end
end

See Also



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