TheGameCreators - CodeBase - Following Camera Principles

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Category: Basic 3D

Version: 1.0

Information

Uploaded: 27th Feb 2004 16:06

Modified: 2nd Mar 2004 16:54

Author: MikeS

Summary

Teaches how to make a following camera.

Full Description

Teaches how to make a following camera.

DarkBASIC Professional Source Code

` This code was downloaded from The Game Creators

` It is reproduced here with full permission

` http://www.thegamecreators.com

` This tutorial was created by Yellow -Mike- 2-26-04

` Although not necessary, it would be nice to be credited and

` notified at yellow1dbp@hotmail.com if this was used in a game

` Thanks, and I hope the tutorial helps.

` Welcome to the follow camera tutorial

` This will provide a basic tutorial on a following camera

`We first set the sync rate on and to a refresh rate of 60.

sync on : sync rate 60

`We make this matrix so it will give us a sense of direction in the program.

make matrix 1,1000,1000,10,10

`Now we make a cube, that will act as our main character.

make object cube 1,4

`This determines how fast our player will move. This line is not necessary,

`yet it helps us to tweak the speeds of our character to get it just right easily.

Object_Speed#=1

do `Initialize our loop

` "X" is the x position "1" is the object number

` and "#" tells the comiler we're working with numbers.

` These variables can be whatever you like, yet I like having a standard method that

` you can easily identify what each variable is for, and what object it applies to.

x1#=object position x(1)

y1#=object position y(1)

z1#=object position z(1)

` Same principles as above, yet the "a" stands for angle, "y" for the type of angle

` and the "#" tells the comiler we're working with numbers.

ay1#=object angle y(1)

`The reason we initialized the variables above, was so we could use the

`set camera to follow command. This lets the camera follow the object

`located at the x position(x1#), y position(y1#) and z position (z1#)

`We've also added the object angle y(ay#), so that when the object turns, the camera

`will re-adjust to the proper angle.

set camera to follow x1#,y1#,z1#,ay1#,5,5,1,1

`These two commands tell the object to move forward with the up and down keys.

`Again, you'll see the Object_Speed# variable, that determines how fast they go.

if upkey()=1 then move object 1,Object_Speed#

if downkey()=1 then move object 1,-Object_Speed#

`We use our object angle y(ay#) variable here to determine whether the object

`turns left or right.

if leftkey()=1 then rotate object 1,0,(ay1#)-1,0

if rightkey()=1 then rotate object 1,0,(ay1#)+1,0

sync `Refresh the screen

loop ` Loop the program

`You now have the basis of a follow cam tutorial.

`Hope this helped -Mike-

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Author Name:	MikeS
CodeBase Entries:	24

CodeBase - Following Camera Principles