Look around and move camera [OPENGL]

Programming Questions

rialobran

Look around and move camera [OPENGL]

in Programming Questions • 2 years ago

Alright, I'm trying to build a first person game. Got most of it done, but am having trouble with the camera (I only need it to look around, not up and down): I've got the lookaround part, doing the direction in polar co-ordinates then converting from that to cartesian coordinates and setting the look-to distance to somwhere in the region of 30000. Now, the problem I have is how I can make this be the direction for the player to move in. So, what I need is a way to look around, then move the player in the direction they are facing. The early camera I have at the moment can look around, but only moves up and down the axes, as the movement just consists of "if 'w' pressed, playerXpos++".

Any help appreciated!

Replies(2)

kooogy

Re: Look around and move camera [OPENGL]

2 years ago

how are you doing this? you give us no clues.

camera() works like the GluLookAt() command, if you're familiar with that

http://processing.org/reference/camera_.html
http://pyopengl.sourceforge.net/documentation/manual/gluLookAt.3G.html

the nine arguments specify

camera position x, y, z
lookat position x, y, z
up vector x, y, z

so the first 3 should match the player's position
the next three should be player's position + view distance * view vector
and the last three are probably ok being left at 0, 1, 0 (but might cause problems when looking straight up or down if you allow that)

rialobran

Re: Re: Look around and move camera [OPENGL]

2 years ago

Ah, sorry for not clarifying that! Tired and ill when I posted the topic. I guess what I want is a way to continuously (as in, not in steps) rotate a vector around a moving point, while still maintaining the same distance/force.

In fact, let me use a picture!

...wait, that doesn't help at all. Ah well!

Thanks for the help!

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