How do you make sprites that move?

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I Hate Code

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Joined: 22nd Jul 2008

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Posted: 23rd Jul 2008 14:49

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Ok so I have no idea how this works, I know a sprite is basically an image. How do I create a 3D sprites (wanting to make a human), and importantly, make the sprite move using certain keyboard keys?

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Emphasoft

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Posted: 23rd Jul 2008 15:45 Edited at: 23rd Jul 2008 15:48

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Hey, welcome to the forums, and the wonderful and frustrating world of programming. This request is vague, but I'd be happy to give you some code to play with. Also, if you haven't already, I'm pretty sure that there are examples of this in the help files.

+ Code Snippet

sync on
sync rate 30
rem make sprite
circle 5,5,4
get image 1,0,0,10,10
do
remstart
x is the x screen coordinate of the sprite, and y is the y screen coordinate. By changing the x and y variables, the sprite will move.
remend
sprite 1,x,y,1
if upkey() then dec y
if downkey() then inc y
if rightkey() then inc x
if leftkey() then dec x
sync
loop

Edit:
I forgot to mention-sprites are automatically rendered by a 3d engine, but have no depth. In order to create a true 3d image, you use the basic3d command set, and probably must create a model in an external program

I admire its purity, a lone survivor, unclouded by delusions of morality or conscience. -Parker, from ALIEN.

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Sixty Squares

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Posted: 24th Jul 2008 01:18 Edited at: 24th Jul 2008 01:20

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A 3D sprite is actually called an object in Dark Basic. You'd need a 3D modelling program to create a model, but Dark Basic sells some and I'm sure people have posted some around as well. Turbosquid.com has some too. Also, to make an object's limbs move, it would need to be animated (This can be done in a 3D modelling program as well)

ANYWAY... Dark Basic has some commands for making 3D objects if you'd like to use them.

To load an object, use "LOAD OBJECT filename, object number (b/c every object needs its own number)"

Here's a simple object movement example. I'll make a sphere using DB's commands:

+ Code Snippet

rem Setup
Sync On
Sync Rate 60
Autocam off `Just so the camera won't automatically position itself. We'll do that later.

rem Create a sphere, object number 1
Make Object Sphere 1,10

rem Position camera at 3D XYZ point 0,200,-200
Position Camera 0,200,-200
rem Point the camera at 3D XYZ point 0,0,0
Point Camera 0,0,0

Do
     rem Object movement when you press the corresponding keys. The "speed" I use is always 2 (negative for reverse). The 1 is the object number.
     if upkey() then Move Object 1,2
     if downkey() then Move Object 1,-2
     if rightkey() then Turn Object Right 1,2
     if leftkey() then turn object left 1,2
     Sync
Loop

Metal Runner
Snow Demo

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