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Over shoulder camera
#352128
01/01/11 06:30
01/01/11 06:30
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Joined: Jul 2009
Posts: 85
Altarius
OP
Junior Member
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OP
Junior Member
Joined: Jul 2009
Posts: 85
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Hi,
Anyone know how to modify this code for change the position of the camera relatively to player?
camera.x = my.x + fcos((camera.pan),cam_focus);
camera.y = my.y + fsin((camera.pan),cam_focus);
camera.z = my.z+60 + fsin(camera.tilt,cam_dist);
I want to make a 3rd person camera 'over shoulder' like in Gear of war, Spinter Cell...ect , where's the camera are placed a little from right of the player.
I tried to add a value (-35) like that:
camera.y = my.y - 35 + fsin((camera.pan),cam_focus);
But now the camera dont pan correctly whit the player model...
I know there's other way to code a camera like that but i want too know if its possible to just add something to this code for get it work.
Thx
Last edited by Altarius; 01/01/11 06:31.
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Re: Over shoulder camera
[Re: Altarius]
#352131
01/01/11 09:14
01/01/11 09:14
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Joined: Dec 2008
Posts: 1,218
Germany
Rackscha
Serious User
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Serious User
Joined: Dec 2008
Posts: 1,218
Germany
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okay, youre just right here  to calculate an offset(iam just doing the offset, bobing/shaking) will be yours ;)) we will simply set an offset and rotate it. here we go:
VECTOR Offset;
function DoCam()
{
Offset.x = -50;//50 units behind
Offset.y = 10; //10 units to the right
Offset.z = 50;//50 units up
vec_rotate(Offset, my.pan);
//now you can simply add this rotated offset to the player position to get
//the offset point. Your code should work if you do this(hopefully):
camera.x = my.x + Offset.x + fcos((camera.pan),cam_focus);
camera.y = my.y + Offset.y + fsin((camera.pan),cam_focus);
camera.z = my.z+6 Offset.z + fsin(camera.tilt,cam_dist);
}
Ofcourse you have to adjust my offset values to fit your setting  . Hope this works, havent tried, just rewritten from Memories. If somethings not working, fell free to ask. Greets Rackscha
MY Website with news of my projects: (for example my current Muliplayer Bomberman, GenesisPrecompiler for LiteC and TileMaster, an easy to use Tile editor) Sparetime-Development
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Re: Over shoulder camera
[Re: Rackscha]
#352175
01/01/11 19:42
01/01/11 19:42
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Joined: Dec 2010
Posts: 8
SQS
Newbie
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Newbie
Joined: Dec 2010
Posts: 8
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I programmed a camera like this a few days ago, but I deleted the file... so it's not tested, sry ^^
var distance = 100; //distance between the player and the camera
function players_camera()
{
camera.x = my.x - distance*cos(20+my.pan);
camera.y = my.y - distance*sin(20+my.pan);
camera.z = my.z;
}
The idea was to change the angle used for the position to move the camera around the player a little bit, til it's on the right side of him. But this is A7 and when I look at your codes it seems there is no "normal" sinus-Function anymore...  Maybe you have to change it a little bit, shouldn't be a problem, if you understand my explanation although it is not good xD (if not, feel free to ask) Just play with the 100 and 20 til the position is ok.
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Re: Over shoulder camera
[Re: SQS]
#352177
01/01/11 19:59
01/01/11 19:59
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Joined: Nov 2007
Posts: 2,568
Germany, BW, Stuttgart
MasterQ32
Expert
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Expert
Joined: Nov 2007
Posts: 2,568
Germany, BW, Stuttgart
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vec_set(temp,vector(-256,-32,64));
vec_rotate(temp,vector(camera.pan,cam_angle,0));
vec_add(temp,my.x);
vec_set(camera.x,temp);
if(c_trace(my.x,camera.x,IGNORE_MODELS | IGNORE_PASSABLE | IGNORE_PASSENTS | IGNORE_ME))
{
vec_set(camera.x,target);
vec_add(camera.x,normal);
}
maybe this is what you need i used it in a GTA "clone"
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Re: Over shoulder camera
[Re: MasterQ32]
#352764
01/05/11 19:53
01/05/11 19:53
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Joined: Sep 2009
Posts: 84
Theil
Junior Member
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Junior Member
Joined: Sep 2009
Posts: 84
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Try something like this: //Basic player movement vec_set(temp.x, my.x); temp.z -= 10000; temp.z = -c_trace (my.x, temp.x, IGNORE_ME | IGNORE_PASSABLE | USE_BOX) - 2; temp.x = 50 * (key_w - key_s) * time_step; temp.y = 50 * (key_a - key_d) * 0.6 * time_step; c_move (my, temp.x, nullvector, IGNORE_PASSABLE | GLIDE | USE_BOX); my.pan -= 50 * mouse_force.x * time_step; camera.pan -= 50 * mouse_force.x * time_step; camera.tilt += mouse_force.y * 8 * time_step; camera.tilt = clamp(camera.tilt,-20,40);//30.10 cam_z -= mouse_force.y * 8 * time_step; cam_z = clamp(cam_z,5,60);//30.10 //cam_z for moving the camera up and down when looking with the mouse //-106 the distance from the cam to the player //-16 position the camera on the right side, left side should be 16 //play around with this values vec_set(temp2,vector(-106,-16,cam_z)); vec_rotate(temp2,vector(camera.pan,10,0)); vec_add(temp2,my.x); vec_set(camera.x,temp2); if(c_trace(my.x,camera.x,IGNORE_MODELS | IGNORE_PASSABLE | IGNORE_PASSENTS | IGNORE_ME)) { vec_set(camera.x,target); vec_add(camera.x,normal); } Edit: I already tested the code and it worked, take a look and tell me if this is what you need. 
Last edited by Theil; 01/05/11 20:05.
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Re: Over shoulder camera
[Re: Theil]
#352774
01/05/11 20:55
01/05/11 20:55
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Joined: Aug 2009
Posts: 1,438
Spain
painkiller
Serious User
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Serious User
Joined: Aug 2009
Posts: 1,438
Spain
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You can also use this one:
var camera_tilt=0;
function camera_3rdperson(ENTITY* ent,VECTOR* offset)
{
var factor=1;
VECTOR camera_x;
if (!ent) return;
vec_set(camera_x,offset);
vec_rotate(camera_x,vector(ent.pan, camera_tilt+ent.tilt, 0));
vec_add(camera_x,ent.x);
vec_set(camera.x,camera_x);
vec_set(camera.pan,vector(ent.pan,ent.tilt*factor+camera_tilt*factor,ent.roll*factor));
}
you have to call it in a loop:
while(1)
{
camera_tilt+= mouse_force.y;
camera_person(player,vector(-tcamera_dist,tcamera_offset_y,tcamera_height),1);
wait(1);
}
Last edited by painkiller; 01/05/11 23:32.
3D Gamestudio A8 Pro
AMD FX 8350 4.00 Ghz
16GB RAM
Gigabyte GeForce GTX 960 4GB
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Re: Over shoulder camera
[Re: painkiller]
#352886
01/06/11 14:23
01/06/11 14:23
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Joined: Aug 2003
Posts: 127
Berlin, Germany
CHaP
Member
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Member
Joined: Aug 2003
Posts: 127
Berlin, Germany
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Oh great. This thread is exactly what I need. I will add a offset at my camera too but there is no clue for me how I can make this done. So, here it is: (it is a standart 3rd person view)
//////////////////////////////////////////////////////////////////////////////////////////////
void CAMERA_calculate()
{
while(1)
{
cameraContainer.currentDistance = (cos(cameraContainer.eulerTilt) * cameraContainer.totalDistance);
camera.x = (cameraContainer.pivotX - cos(cameraContainer.eulerPan) * cameraContainer.currentDistance);
camera.y = (cameraContainer.pivotY - sin(cameraContainer.eulerPan) * cameraContainer.currentDistance);
camera.z = (cameraContainer.pivotZ + sin(cameraContainer.eulerTilt) * cameraContainer.totalDistance);
camera.pan = cameraContainer.eulerPan;
camera.tilt = -(cameraContainer.eulerTilt);
camera.roll = 0;
wait(1);
}
}
//////////////////////////////////////////////////////////////////////////////////////////////
The cameraContainer contains all the informations about the player like xyz and pan/tilt. It would be nice if anybody can help me and Altarius, feel free to copy this code and use it for yourself (if it works of course)
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Re: Over shoulder camera
[Re: CHaP]
#352952
01/06/11 19:31
01/06/11 19:31
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Joined: Dec 2008
Posts: 1,218
Germany
Rackscha
Serious User
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Serious User
Joined: Dec 2008
Posts: 1,218
Germany
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Set an offset, look at my code at the top
MY Website with news of my projects: (for example my current Muliplayer Bomberman, GenesisPrecompiler for LiteC and TileMaster, an easy to use Tile editor) Sparetime-Development
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Re: Over shoulder camera
[Re: Rackscha]
#352959
01/06/11 20:13
01/06/11 20:13
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Joined: Aug 2003
Posts: 127
Berlin, Germany
CHaP
Member
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Member
Joined: Aug 2003
Posts: 127
Berlin, Germany
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@Rackscha: Yap, this is what I have tried at first. But the offset works not correctly. If I rotate the player, the camera will move around in a kind of ellipse.
//////////////////////////////////////////////////////////////////////////////////////////////
void CAMERA_calculate()
{
VECTOR vecOffset;
while(1)
{
vecOffset.x = 0;
vecOffset.y = 50;
vecOffset.z = 0;
vec_rotate(vecOffset,cameraContainer.eulerPan);
cameraContainer.currentDistance = (cos(cameraContainer.eulerTilt) * cameraContainer.totalDistance);
camera.x = (cameraContainer.pivotX + vecOffset.x - cos(cameraContainer.eulerPan) * cameraContainer.currentDistance);
camera.y = (cameraContainer.pivotY + vecOffset.y - sin(cameraContainer.eulerPan) * cameraContainer.currentDistance);
camera.z = (cameraContainer.pivotZ + vecOffset.z + sin(cameraContainer.eulerTilt) * cameraContainer.totalDistance);
// also this
camera.x = (cameraContainer.pivotX + vecOffset.x + fcos(cameraContainer.eulerPan) * cameraContainer.currentDistance);
camera.y = (cameraContainer.pivotY + vecOffset.y + fsin(cameraContainer.eulerPan) * cameraContainer.currentDistance);
camera.z = (cameraContainer.pivotZ + vecOffset.z + fsin(cameraContainer.eulerTilt) * cameraContainer.totalDistance);
camera.pan = cameraContainer.eulerPan;
camera.tilt = -(cameraContainer.eulerTilt);
camera.roll = 0;
wait(1);
}
}
//////////////////////////////////////////////////////////////////////////////////////////////
maybe wrong place?!
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Re: Over shoulder camera
[Re: CHaP]
#352962
01/06/11 20:57
01/06/11 20:57
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Joined: Dec 2008
Posts: 1,218
Germany
Rackscha
Serious User
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Serious User
Joined: Dec 2008
Posts: 1,218
Germany
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yust do this small steps:
1) rotate the offset by the PLAYER angle.
2) add the player position to the offset.
3) the result of 2) is the neede camera position
4) your camera is now at its perfect position, yust give it the same pan/tilt as the player
Last edited by Rackscha; 01/06/11 20:58.
MY Website with news of my projects: (for example my current Muliplayer Bomberman, GenesisPrecompiler for LiteC and TileMaster, an easy to use Tile editor) Sparetime-Development
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