Game worlds are viewed from a camera, which is the viewpoint from which the game world is observed from.
9
votes
2answers
6k views
converting a mouse click to a ray
I have a perspective projection. When the user clicks on the screen, I want to compute the ray between the near and far planes that projects from the mouse point, so I can do some ray intersection ...
4
votes
4answers
547 views
Cast ray to select block in voxel game
I am developing a game with a Minecraft-like terrain made out of blocks. Since basic rendering and chunk loading is done now, I want to implement block selecting.
Therefore I need to find out what ...
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 ...
29
votes
1answer
3k views
Mouse aim in an FPS
I would like to make a First Person Shooter and move the camera with the mouse. The problem is that when the cursor reaches the limits of the screen, the camera won't turn anymore. How can I keep the ...
1
vote
3answers
1k views
How to add a scrolling camera to a 2D Java game?
I am attempting to create a game where the camera follows the player, always making sure the player is in the center of the screen. How would I go about this? This game is a 2D Java game, made with no ...
13
votes
5answers
799 views
Creating my own kill cam
I plan on creating my own kill cam system for a sandbox tool set. After thinking about the mechanics of the kill cam itself, however, I'm quite lost. I'm trying to recreate the ones commonly seen in ...
5
votes
1answer
525 views
Implementing a camera / viewport to a 2D game
What is the most practical way to implement camera/viewport to a 2D-game?
I've read, that I should store the object world position instead of position relative to the screen?
Current situation:
I ...
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
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);
...
1
vote
1answer
549 views
2d game view camera zoom, rotation & offset using 'Filter' / 'Shader' processing?
I wish to add the ability to zoom-in, zoom-out, rotate and move the view in a top-down view over a collection of points and lines in a large 2d map. I split the map into a grid so I only need to ...
2
votes
1answer
163 views
Unity3D Camera constantly moving
I'm trying to make my own first person camera controls in unity that use both thumbsticks on a joypad. I have this working fine. However, when I move the right thumb stick (the one uses to look left / ...
2
votes
1answer
856 views
Obtaining a world point from a screen point with an orthographic projection
I assumed this was a straightforward problem but it has been plaguing me for days.
I am creating a 2D game with an orthographic camera. I am using a 3D camera rather than just hacking it because I ...
0
votes
2answers
330 views
Making a Camera look at a target Vector
I have a camera that works as long as its stationary. Now I'm trying to create a child class of that camera class that will look at its target.
The new addition to the class is a method called ...
0
votes
2answers
421 views
CubeRealm OpenGL rotation problems, need help. :\
I'm totally new to OpenGL and I'm working on a Sandbox game called CubeRealm. My problem you see is rotation. I've got it in my head that to rotate the 'camera' I just rotate all the scene by the ...
43
votes
9answers
6k views
Why do we move the world instead of the camera?
I heard that in an OpenGL game what we do to let the player move is not to move the camera but to move the whole world around.
For example here is an extract of this tutorial: OpenGL View matrix
...
27
votes
5answers
3k views
Realistic Camera/Screen Shake from Explosion
I'd like to shake the camera around a bit during an explosion, and I've tried a few different functions for rocking it around, and nothing seems to really give that 'wow, what a bang!' type feeling ...
19
votes
2answers
1k views
Mega Man-style screen scrolling design
The NES classic Mega Man series uses a very specific scrolling technique that I'm having a hard time wrapping my head around implementing. Essentially, the level is divided into "screens" which are ...
11
votes
2answers
730 views
How to blend two cameras when traveling through a portal in Unity3D
Before I get to my question, I know the most obvious solution would be to use the normalized view port rect, however I need more complex shapes than a rectangle, and I've looked in to using the view ...
5
votes
3answers
932 views
Determine corners of a specific plane in the frustum
I'm working on a game with a 2D view in a 3D world. It's a kind of shoot'em up. I've a spaceship at the center of the screen and i want that ennemies appear at the borders of my window. Now i don't ...
14
votes
5answers
968 views
What's the best head-bob formula?
Given a point in space, a direction of travel, and a time since start, what's a convincing, non-sickening formula to simulate head bob? What's been successful in previous games? Has there been any ...
5
votes
3answers
3k views
Why / how does XNA's right-handed coordinate system effect anything if you can specify near/far Z values?
I am told repeatedly that XNA Game Studio uses a right-handed coordinate system, and I understand the difference between a right-handed and left-handed coordinate system. But given that you can use a ...
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 ...
8
votes
4answers
1k views
Camera Control Techniques in Games
I am an MPhil student in Computing Science working on the problem of camera control in graphics. Though the literature of camera control dates back to the end of 1980s, the majority of them (up to my ...
6
votes
1answer
386 views
In a scrolling 2D game, should the objects move or should the camera move?
I'm new to game design and don't really know how things are done. I'm thinking of building an iOS game where a ship has to fly as high up as possible (at variable speeds), collecting power ups, et ...
3
votes
3answers
863 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
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 ...
2
votes
1answer
387 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
997 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. ...
7
votes
2answers
418 views
Portal Projection
Ok ok I admit, I'm bored and toying with a portal script like the one on steam.
I've figured out the following:
relative positioning of the mirrored cameras
render to texture for the portal (the ...
6
votes
5answers
688 views
FPS games: don't they have unrealistic one-eyed view? What are the causes?
I have played many fps games, and noticed that the camera perspective is similar to the 'one eyed view' of the surroundings. It does not feel like bilinear. :/
Is it because of the single flat view ...
5
votes
1answer
518 views
How can I implement view wobble when my player is running?
I'm creating a FPS in XNA. So far its' going great. What I'm looking at doing is replicating the camera movements that you see in Modern Warfare. So, if you are walking the camera stays pretty ...
4
votes
2answers
171 views
Render a 3D scene in multiple windows - extended panoramic view
Is there any resource location on how to view a 3D scene from an application or a game on multiple windows or monitors? Each window should continue drawing from where the neighbouring one left off (in ...
3
votes
1answer
417 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 ...
2
votes
1answer
2k views
How do I properly implement zooming in my game?
I'm trying to implement a zoom feature but I have a problem. I am zooming in and out a camera with a pinch gesture, I update the camera each time in the render, but my sprites keep their original ...
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 ...
1
vote
1answer
123 views
Camera wont stay behind model after pitch, then rotation
I have a camera position behind a model. Currently, if I push the left thumbstick making my model move forward, backward, or strafe, the camera stays with the model. If I push the right thumbstick ...
1
vote
1answer
944 views
Orbiting a specific point - Orbiting Camera
How would I create a camera that with the mouse, it allows you to orbit around a specifc position, with the camera always facing that point? I would also like it to be able to always be at a constant ...
1
vote
1answer
741 views
moving 2D camera
I've got a camera that places the character about a 1/4 way into the screen. The problem I'm having is that when the character moves left the character stays in place now placing the character 3/4 the ...
1
vote
1answer
3k views
OpenGL ES 2.0: Moving Camera in Orthogonal (2D) Projection
I have quite large 2D game scene. The scene is much larger than the screen of the LCD. Therefore, I have to move the camera (view) in desired directions, to display particular parts of the scene.
...
0
votes
1answer
238 views
3d world vertex translation to go to 2d screen coords
My technical english is a little rusty so to avoid misunderstands please be patient with me :)
I will try to be brief and clear
Situation:
- I have a 2d sprite character on the screen
- I've just ...
0
votes
3answers
201 views
Understanding how to go from a scene to what's actually rendered to screen in OpenGL?
I want something that explains step by step how, after setting up a simple scene I can go from that 'world' space, to what's finally rendered on my screen (ie, actually implement something). I need ...
-1
votes
1answer
379 views
First person camera is somehow “magically” expanding
I'm making a first-person game, and I've gotten the camera done (modified version of Lloyd Goodall's code), but whenever I scale an object, it doesn't appear bigger, but the speed of movement seems to ...
-2
votes
2answers
352 views
Move camera on X and Z only
How would you implement movement on a camera in order to always move it on X and Z coordinates, and if the camera has pitch yaw or roll it still moves only in those coordinates and doesn't fly up?
-5
votes
1answer
95 views
camera2d class will not work [closed]
using System;
using System.IO;
using Microsoft.Xna.Framework;
using Microsoft.Xna.Framework.Content;
using Microsoft.Xna.Framework.Graphics;
using Microsoft.Xna.Framework.Input;
using ...
