GetCursorPosition: Difference between revisions
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===Returns=== | ===Returns=== | ||
Returns 5 values: ''cursorX'', ''cursorY'', ''worldX'', ''worldY'', ''worldZ''. The first two values are the 2D relative screen coordinates of the cursor: ''cursorX'' goes from 0 (left side of the screen) to 1 (right side), ''cursorY'' goes from 0 (top) to 1 (bottom). The 3 values that follow are the 3D world map coordinates that the cursor points at. If the cursor isn't showing, returns ''false'' as the first value. | Returns 5 values: ''cursorX'', ''cursorY'', ''worldX'', ''worldY'', ''worldZ''. The first two values are the 2D relative screen coordinates of the cursor: ''cursorX'' goes from 0 (left side of the screen) to 1 (right side), ''cursorY'' goes from 0 (top) to 1 (bottom). The 3 values that follow are the 3D world map coordinates that the cursor points at. If the cursor isn't showing, returns ''false'' as the first value. | ||
===Issues=== | |||
{{Issues| | |||
{{Issue|5226|getCursorPosition() 3D Positions Return Inaccurate, But Nearby Positions - Also Negative WorldZ}} | |||
}} | |||
==Example== | ==Example== | ||
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</syntaxhighlight> | </syntaxhighlight> | ||
==See Also== | ==See Also== | ||
{{Client_cursor_functions}} | {{Client_cursor_functions}} |
Revision as of 19:03, 13 December 2013
This function gets the current position of the mouse cursor. Note that for performance reasons, the world position returned is always 300 units away. If you want the exact world point (similar to onClientClick), use processLineOfSight between the camera position and the worldX/Y/Z result of this function. (See example below)
Syntax
float float float float float getCursorPosition ( )
Returns
Returns 5 values: cursorX, cursorY, worldX, worldY, worldZ. The first two values are the 2D relative screen coordinates of the cursor: cursorX goes from 0 (left side of the screen) to 1 (right side), cursorY goes from 0 (top) to 1 (bottom). The 3 values that follow are the 3D world map coordinates that the cursor points at. If the cursor isn't showing, returns false as the first value.
Issues
Issue ID | Description |
---|---|
#5226 | getCursorPosition() 3D Positions Return Inaccurate, But Nearby Positions - Also Negative WorldZ |
Example
This example prints your cursors current world coordinates and relative screen coordinates to chatbox after typing cursorpos.
function cursorInfo() local showing = isCursorShowing () if showing then -- if the cursor is showing local screenx, screeny, worldx, worldy, worldz = getCursorPosition() outputChatBox( string.format( "Cursor screen position (relative): X=%.4f Y=%.4f", screenx, screeny ) ) -- make the accuracy of floats 4 decimals outputChatBox( string.format( "Cursor world position: X=%.4f Y=%.4f Z=%.4f", worldx, worldy, worldz ) ) -- make the accuracy of floats 4 decimals accurate else outputChatBox( "Your cursor is not showing." ) end end addCommandHandler( "cursorpos", cursorInfo )
This (untested) example uses processLineOfSight to calculate the exact world location:
addEventHandler( "onClientRender", root, function() if isCursorShowing() then local screenx, screeny, worldx, worldy, worldz = getCursorPosition() local px, py, pz = getCameraMatrix() local hit, x, y, z, elementHit = processLineOfSight ( px, py, pz, worldx, worldy, worldz ) if hit then dxDrawText( "Cursor at " .. x .. " " .. y .. " " .. z, 200, 200 ) if elementHit then dxDrawText( "Hit element " .. getElementType(elementHit), 200, 220 ) end end end end )
See Also
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