hi there

i´ve a little problem with my Editor..
I want to change from keyboard controls, to mouse control.

Problem.. i´ve no clue how to set the 3D Block on the position of the mouse ._.

c_trace isn´t working, cause there´s nothing the trace can hit...

That´s how the Editor looks like:


This yellow transparent block is the 3D Cursor, the small thingy right is the mouse cursor.
The Grid is drawn with draw_line3d.

The Editor View is a Second view (not the camera) called "edit_view".


The Block should move on his X and Z Axis.. BUT NOT on his Y. Cause the Y position will be changed with the Mouse Wheel.


Can someone help me here? ._.

If I understood you correctly, this code might help you getting along: http://www.opserver.de/wiki/index.php/Plane-Line_Intersection

You can construct a ray/line through the mouse cursor with mouse_dir3d and mouse_pos3d. The grid acts as a plane. You can then place the cube at the intersection point.

uhm.. what?
Didn´t get it ._.

What Myrkling suggests is that you check if the imaginary line from the mouse cursor to some hypothetical position far in front of the mouse cursor, and check if and where it intersects with your grid.

If you also want to check if an entity is hit, you should first c_trace() along the line and if it hits nothing fall back to the intersection check.

and how can i check that intersection with the grid?

Dude, he posted a link with working code and everything oO

Why don't you simply add a plain terrain at the height of the grid, and then use a trace with mouse_pos3d and mouse_dir3d like the example from the manual?

http://www.conitec.net/beta/mouse_pos3d.htm

As soon as the player places a Terrain, he wants to place the things at the height of the hills or valley anyway.

yes, but what do i need to fillin plane_point or plane_normal or ip?

i tried a terrain, but when i moved it with the camera to the sides and up and down, the framerate was killed..

I... are you kidding us?

i´ve no plane ._.
the room is complete empty..