The viewpoint from which the game world is observed from.
4
votes
1answer
308 views
Handling cameras in a large scale game engine
What is the correct, or most elegant, way to manage cameras in large game engines? Or should I ask, how does everybody else do it?
The methods I can think of are:
Binding cameras straight to the ...
4
votes
1answer
440 views
Issues implementing arcball viewer
My scene has a simple cube, and a camera built with the lookAt function (I'm using OpenGL). The scene renders fine, and I'm sure I have my model/view/projection matrices set up correctly.
Now I'm ...
4
votes
3answers
422 views
Zelda LttP (Super Nintendo) room changes?
I'm trying to make a tile-world adventure game on iOS similar to Zelda Link to the Past on SNES, and one issue I've run into is having my camera move beyond walls revealing the rooms on the other ...
4
votes
1answer
366 views
3D Camera Problem
I allow the user to look around the scene by holding down the left mouse button and moving the mouse. The problem that I have is I can be facing one direction, I move the mouse up and the view tilts ...
3
votes
1answer
1k views
Can a 4x4 matrix describe a camera's perspective?
I'm working with a closed-source 3D engine, and it only allows you to set the view projection via a 4x4 matrix. Can this matrix describe the camera's translation, rotation & perspective?
I turned ...
3
votes
1answer
2k views
Mouse location is off due to camera
I'm building a top down shooter but I have a little issue with my camera and mouse.
When I add the camera that I use to my game (see here) my mouse pointer seems to be in the wrong location.
When I ...
3
votes
2answers
294 views
How do I get started with fog type effects in a first person game?
Hey guys, I'm currently using JME3 to learn 3d game development in java, and I have run into a situation. I would like to add fog effects to my games, but I don't even know where to start to implement ...
3
votes
2answers
2k views
Calculating up-vector to avoid gimbal lock using euler angles
I wish to orbit a camera around a sphere, yet the problem is that when the camera rotates so that it is at the north pole (and pointing down) or the south pole (and pointing up) of the sphere the ...
3
votes
1answer
4k views
3D Ray Casting / Picking
I am not sure if I should post this link, but I feel this falls into game development just as much as it does math. I have a ray cast's far and near values and I am trying to calculate the end point ...
3
votes
3answers
792 views
How to keep my Quaternion-using FPS camera from tilting and messing up?
I am using an FPS-like camera, and it uses quaternions. But, whenever I try looking up and then sideways, it tilts, and sometimes it can turn upside down. How can I fix this?
3
votes
2answers
2k views
How To Smoothly Animate From One Camera Position To Another
The Question is basically self explanatory. I have a scene with many cameras and I'd like to smoothly switch from one to another. I am not looking for a cross fade effect but more to a camera moving ...
3
votes
3answers
748 views
2D XNA game Camera issue
I'm currently making a 2D Worm-clone in XNA, and have regrets about the way I've made my camera. I declare my camera in my Main class and the camera follows the player. In my draw I then begin my ...
3
votes
1answer
130 views
Blender Object Appearing Gray when all Lights are Off
I have an issue with Blender where, when I turn my only light off (a sun lamp) and render the image my object appears gray rather than black (and thus, not appear to the camera). I can't figure out ...
3
votes
3answers
6k views
How can I rotate a camera about it's target point?
I'm drawing a scene where the camera freely moves about the universe. The camera class keeps track of the view (or look at) point, the position of the camera, and the up vector. These vectors/points ...
3
votes
2answers
1k views
Implementing camera for 2d side scroller game?
I'm implementing a 2D side scroller for iOS (using C/C++ with OpenGL) (beat'em up style like double dragon/final fight ).
My scenes are composed of one cyclical background image ( the end of the ...
3
votes
1answer
403 views
Perspective projection with 90 degrees between X-Y axis?
I'm trying to create a game that mimics Tibia's projection style:
,
As you can see, a 3d point is mapped to 2d like this:
So I've downloaded Three.JS and a lib to create a Orthographic Camera. But ...
3
votes
1answer
1k views
How can I track a falling ball with a camera?
I have been trying to get my camera to follow a falling ball but with no success.
here is the code
float cameraY = (FrustumHeight / 2)+((ball.getPosition().y) /2) - (FrustumHeight /2);
...
3
votes
2answers
1k views
3D camera implementation
I've been bashing my head against the concept of a 'camera' for my 3D world for some time now, and I'm not sure I'm doing this right anymore. Maybe I've been working on this for too long and have ...
3
votes
2answers
128 views
Perfect FPS camera angle
I am making a multiplayer FPS and I am in search of some helpful tips on the perfect FPS camera angle. Because it is a multiplayer, I am making a full body model holding the gun, I find, however, that ...
3
votes
1answer
118 views
Camera Math for Directions
I have a Camera object that has the variables:
class Camera : Object
{
public:
float positionX, positionY, positionZ;
float directionX, directionY, directionZ;
int speed;
...
3
votes
2answers
1k views
Viewport / Camera Calculation in 2D Game
we have a 2D game with some sprites and tiles and some kind of camera/viewport, that "moves" around the scene. so far so good, if we wouldn't had some special behaviour for your camera/viewport ...
3
votes
1answer
186 views
Is there a standard camera position / orientation?
I've come across a need to position a camera for an arbitrary (unknown) scene. The camera can be updated later, but I thought I'd give it a reasonable default, and the thought crossed my mind that ...
3
votes
2answers
1k views
Help me get my 3D camera to look like the ones in RTS
I am a newbie in 3D game development and I am trying to make a real-time strategy game. I am struggling with the camera currently as I am unable to make it look like they do in RTS games.
Here is my ...
3
votes
3answers
718 views
How to determine what triangle in a mesh the cursor is pointing to?
I have a game I'm working on in which items are "placed" and "selected".
In order to do this, I need to determine what triangle in a mesh the cursor is pointing to. I have no trouble with getting ...
3
votes
2answers
1k views
Scrolling 2D sprites on a map with a camera
I'm working on a 2D sprite-based strategy-type game (ok, full disclosure: it's a tower defense game), and I'm having a problem getting the actors to behave correctly when I move the camera.
I've got ...
3
votes
2answers
414 views
How to rotate camera centered around the camera's position?
Currently I am using gluLook at like so:
gluLookAt(position.x, position.y, position.z,
viewPoint.x, viewPoint.y, viewPoint.z,
upVector.x, upVector.y, upVector.z);
with the ...
3
votes
1answer
258 views
Panning a 3d viewport in 2d direction with rotated camera
I am using below code to pan the viewport (action script 3 code using flare3d framework)
_mainCamera.x-= Input3D.mouseXSpeed;
_mainCamera.z+= Input3D.mouseYSpeed;
Where as Input3D.mouse[X|Y]Speed ...
3
votes
1answer
2k views
How do I move the camera sideways in Libgdx?
I want to move the camera sideways (strafe). I had the following in mind, but it doesn't look like there are standard methods to achieve this in Libgdx.
If I want to move the camera sideways by x, I ...
3
votes
2answers
511 views
Detect if a sprite has left the camera in libgdx?
Is there a method to know if a sprite has left the camera of the stage? or I have to do my operations? :P
3
votes
2answers
154 views
Camera placement sphere for an always fully visible object
Given an object:
With the bounds [x, y, z, width, height, depth]
And an orthographic projection [left, right, bottom, top, near, far]
I want to determine the radius of a sphere which allows me to ...
3
votes
2answers
382 views
Silverlight scrolling with camera
I'm trying to get my head around scrolling a 2D map that uses a physics engine. If I was to launch a projectile, would I actually be applying the physics to the background images rather than the ...
3
votes
1answer
2k views
Calculating camera frustum planes using existing matrix
I'm trying to get basic frustum culling against an AABB working, and I'm having a bit of trouble figuring out how to extract the frustum planes from my camera's transform matrix. All the example code ...
3
votes
3answers
4k views
Camera Rotation using angles
I currently try to rotate a camera (using gluLookAt()) around a point , i successfully do it for rotating around one global axis.
But when i want to use more than one axis , I'm stuck . I've ...
3
votes
0answers
170 views
Web sites with famous game information? [closed]
Is there any website containing informations related with some famous game? For information I mean how to calculate damage in a rpg for example, or how they've set camera and other tips like this!
...
3
votes
2answers
774 views
How to fix issue with my 3D first person camera? [closed]
My camera moves and rotates, but relative to the worlds origin, instead of the players. I am having difficulty rotating the camera and then translating the camera in the direction relative to the ...
2
votes
4answers
204 views
Moving camera, or camera with discrete “screens”?
I'm making a game with a friend, but having trouble deciding on a camera style.
The basic idea for the game, is having a randomly generated 2-dimensional world, with settlements in it. These ...
2
votes
2answers
214 views
How does Wii detect user's movement with its camera?
I try to understand the concept behind Wii device. It has 4 camera with capture user's movement, I wonder how does these cameras work? Any reference, article, or papers would be great source for me to ...
2
votes
2answers
200 views
How to avoid gimbal lock
I am trying to write code with rotates an object.
I implemented it as:
Rotation about X-axis is given by the amount of change in y coordinates of a mouse and
Rotation about Y-axis is given by the ...
2
votes
2answers
245 views
Restrict camera movements
I'm making a game with target (orbit camera). I want to limit camera movements when in room. So that camera don't go through walls when moving around target and along the ground.
What are common ...
2
votes
1answer
109 views
Optimising out tiles outside of viewport
I am playing around with the HTML5 canvas and have begun implementing a tile engine.
However, it's currently very inefficient: I have a 100x100 2D array and my code loops through the whole thing ...
2
votes
1answer
420 views
Why use 3d matrix and camera in 2D world for 2d geometric figures?
I'm working in XNA on a 2d isometric world/game and I'm using DrawUserPrimitives to draw some geometric figures...
I saw some tutorials about creating dynamic shadows but I didn't understood why they ...
2
votes
2answers
200 views
Moving 2d camera in the y direction
I'm developing a simple game for the iphone and am struggling to work out the best way for the camera to follow the main character. The following picture hightlights the three main components:
...
2
votes
1answer
250 views
Should the camera's rotation value be clamped?
I noticed that when writing a camera for my 2D game that the camera rotational value of -6 and 6 is equivalent to 0.
That is, -6 = -12 = -18 = -24 = 6 = 12 = 18 = 24.
I was wondering if it was ...
2
votes
2answers
1k views
camera movement along with model
I am making a game in which a cube travels along a maze with the motive of crossing the maze safely. I have two problems in this.
The cube needs to have a smooth movement like it is traveling on a ...
2
votes
1answer
491 views
Rendering skybox in first person shooter
I am trying to get a skybox rendered correctly in my first person shooter game. I have the skybox cube rendering using GL_TEXTURE_CUBE_MAP. I author the cube with extents of -1 and 1 along X,Y and Z.
...
2
votes
1answer
103 views
Game Maker: How do I make a score display move with the view?
I have drawn everything needed to the screen including a HUD for the score, but I have my room set to follow my player: When the camera follows the player, the score HUD stays doesn't scroll with him!
...
2
votes
1answer
141 views
Camera movement using WASD on x/z plane only
I've been wearing my enter key down on google searches - I have a camera script based on the MouseOrbit.js asset. That's all working fine, but in addition to the basic orbiting and the zooming that ...
2
votes
1answer
116 views
Difference between rotation methods?
My question is in about rotate methods in android.graphics.Camera. In Docs, I saw these comments:
public void rotateX (float deg) Since: API Level 1
Applies a rotation
transform around the X ...
2
votes
1answer
369 views
3D zooming technique to maintain the relative position of an object on screen
Is it possible to zoom to a certain point on screen by modifying the field of view and rotating the view of the camera as to keep that point/object in the same place on screen while zooming ? Changing ...
2
votes
2answers
979 views
XNA Camera 2D confusion
I have followed the tutorial at http://www.david-amador.com/2009/10/xna-camera-2d-with-zoom-and-rotation/ to implement my 2D camera and everything works just fine. However this leaves me confused. ...
