3rd Person Camera Options

[Shadowrend]

How do i add a third person camera that you can:

• Middle Mouse Press = Default Zoom (Done)
• Middle Mouse Up = Zoom In (Done)
• Middle Mouse Down = Zoom Out (Done)
• RMB + Move Mouse = Rotate the camera
• RMB + LMB + Move Mouse = Rotate the camera and the player so he faces the camera

Thanks.


PS: If anybody would like to work on a 3D MMORPG PM me.
PSS: Point me out to a good 3D movement system.

[-Oakleaf-]

Tutorials. Check them out.

This post has been edited by -Oakleaf-: Nov 7 2009, 08:27 PM

[frankpiet]

this is how I do it. (It has a slight problem when going above 45 degrees z, dont know why. If anyone can help, tell me)

CODE

if mouse_check_button(mb_right)
{
cam_yr+=(mouse_y-mouse_yprevious)/5
cam_zr+=(mouse_x-mouse_xprevious)/5
}

cam_xf=cam_xt-lengthdir_x(1,cam_zr)*mouse_wheel_p
cam_yf=cam_yt-lengthdir_y(1,cam_zr)*mouse_wheel_p
cam_zf=cam_zt-lengthdir_y(1,cam_yr)*mouse_wheel_p

mouse_wheel_p is zoom
...t is to
...f is from
...r is rotation
mouse...previous is used in my code because I hate the mouse being in the centre of the screen. you will need to reset it every end step to the current mouse x and y
the /5 can be changed if it goes too fast

As for rotating the camera, try this(in conjunction with my other system)

CODE

direction=point_direction(xf,yf,xt,yt)

I have typed it up so it hopefully faces away from the camera. If it doesnt, swap the f's for the t's

[Shadowrend]

if doesnt seem to work. could you post me an example please

[frankpiet]

Can you show us what you have done? It will get the job done a lot faster

[slayer 64]

here is some 3rd person camera code. zang is the left and right angle. yang is the up and down angle. you'll need to initialize them to 0.

CODE

var xf,yf,zf,m;

if mouse_check_button_pressed(mb_right)
{
    mousex=mouse_x;
    mousey=mouse_y;
    window_mouse_set(mousex,mousey);
}

if mouse_check_button(mb_right)
{
    zang+=(mousex-window_mouse_get_x())/8;
    yang+=(mousey-window_mouse_get_y())/8;
    yang=min(89,max(-89,yang));
    window_mouse_set(mousex,mousey);
}

xf=lengthdir_x(1,zang);
yf=lengthdir_y(1,zang);
zf=tan(degtorad(yang));
m=sqrt(sqr(dx)+sqr(dy)+sqr(dz))/-200;
dx/=m;
dy/=m;
dz/=m;

d3d_set_projection(xf,yf,zf,x,y,z,0,0,1);

[Shadowrend]

________________________________________
ERROR in
action number 2
of Step Event
for object obj_pCam:

In script scr_cammove:
Error in code at line 21:
m=sqrt(sqr(dx)+sqr(dy)+sqr(dz))/-200;

at position 13: Unknown variable dx


i placed the yang=0 and zang=0 in the create event of the obj_pCam = that is the object the camera rotates around. not the players direction. That way you can rotate the camera and player independently.


i uploaded the file so if you could edit it and and upload it back here is it

This post has been edited by Shadowrend: Nov 8 2009, 10:55 AM

[slayer 64]

woops, part of the code should be fixed to this.

CODE

m=sqrt(sqr(xf)+sqr(yf)+sqr(zf))/-200;
xf/=m;
yf/=m;
zf/=m;

d3d_set_projection(x+xf,y+yf,z+zf,x,y,z,0,0,1);

This post has been edited by slayer 64: Nov 8 2009, 04:35 PM