TheGameCreators - CodeBase - Simple Box Movement: V2

Category: Complete Applications

Version: 1.0

Information

Uploaded: 27th Feb 2005 20:20

Modified: 1st Jan 1970 01:00

Author: RUCCUS

Summary

The second installment of my Simple Box Movement. This one cover's the usage of angles to turn the box in the direction you wish to aim at.

Full Description

Turn the box with the left and right arrow keys.<br /> Move forward and backward with the up and down arrow keys.<br /> <br /> Goodluck!

DarkBASIC Professional Source Code

` This code was downloaded from The Game Creators

` It is reproduced here with full permission

` http://www.thegamecreators.com

REM Basic Movement Controls Tutorial

REM By RUCCUS of The Game Creators

REM No credit needed, use freely and change at own risk :p

REM Standard Setup

SYNC ON    : SYNC RATE 300

HIDE MOUSE

REM Time to create a simple box, this will be our character

REM We use the make object box command to make a box in db

REMSTART The first number tells us the number of the box

for later reference. The second defines the width, the third

defines the height, and the fourth defines the length.REMEND

MAKE OBJECT BOX 1,10,10,10

REMSTART Now we position the object, first we tell it what object

to position, we want to position object 1 so we use a 1. Then

we show it where to position the object, using the x, y, and z

coordinates.REMEND

POSITION OBJECT 1,0,0,-10

REMSTART Finally, let's colour the object, just to spiff it up

a bit. Once again tell the compiler which object to colour,

in our case, object 1. Then tell it what amount of colours we

will use of each primary colour, red, blue and green. Since we

are making the box all green, we wont have any red or blue, and

full green (255).REMEND

COLOR OBJECT 1, RGB(000,255,000)

REMSTART Lets create one other box just so you can see you're

moving around. It will be object 2, and will be red.REMEND

MAKE OBJECT BOX 2,30,20,30

POSITION OBJECT 2,0,0,15

COLOR OBJECT 2, RGB(255,000,000)

REMSTART As one last touch we should position the camera at a

higher angle so we can see the object a lot better.

We do this by using the position camera command.REMEND

POSITION CAMERA 0,50,-100

REMSTART Now we start a loop using the DO command. This loop will

constantly be occuring to check for anything new happening in

the game. REMEND

REM COLLSION!!!

REMSTART The following code will give the game a little bit of a

more realistic feel. It'll stop the box from running through the

other box.

First, we need to store the object 1's coordinates for later use. REMEND

OLDX# = OBJECT POSITION X(1)

OLDY# = OBJECT POSITION Y(1)

OLDZ# = OBJECT POSITION Z(1)

REM CONTROLS

REMSTART Now lets define the controls to move our friendly box

around. We'll start with moving forward and backward.REMEND

REM Moving Forwards.

REMSTART IF the UPKEY is pressed (equals 1) the move object 1

foewards by 1 unit. The object will always move forwards as long

as the upkey equals 1, or is being pressed in other words.REMEND

IF UPKEY() = 1 THEN MOVE OBJECT 1,1

REM Moving Backwards

REMSTART The same goes for moving backwards, except we'll

use a negative so the box moves backwards.REMEND

IF DOWNKEY() = 1 THEN MOVE OBJECT 1,-1

REM Now for turning left and right

REMSTART Basically, if the leftkey is pressed, rotate the

object 1 on it's y axis, at an angle of -.5 degrees per second

that the leftkey is held. The same goes for the rightkey,

except rotating at a positive amount. Try changing the

YROTATE to XROTATE or ZROTATE, but be sure to change the ANGLE Y

to the corresponding axis aswell!REMEND

IF LEFTKEY()=1 THEN YROTATE OBJECT 1,OBJECT ANGLE Y(1)-1

IF RIGHTKEY()=1 THEN YROTATE OBJECT 1,OBJECT ANGLE Y(1)+1

REM The last part of the collision

REMSTART This code will check for when object 1 hits any other

object. If it does it will position the object 1 at it's last

coordinates that were'nt touching a different object.REMEND

IF OBJECT COLLISION (1,0)

POSITION OBJECT 1,OLDX#,OLDY#,OLDZ#

ENDIF

REM Finishing up

REMSTART The SYNC command will tell the program to refresh the

screen, so we can see the object move. Then the loop command

ends the loop.REMEND

SYNC

LOOP

REM Challenges

REMSTART

-Try experimenting with different colours

-Try changing the angles of rotation, you could get you're

box to start flying....:)

-Try changing the amount the object turns and moves to

increase/decrease the speed and turning capability

GOODLUCK!

- RUCCUS

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Author Name:	RUCCUS
CodeBase Entries:	10

CodeBase - Simple Box Movement: V2