Moving a letter or a oblect around the screen

Author

Message

Ian Hughes

20

Years of Service

User Offline

Joined: 29th Sep 2003

Location: UK

Posted: 30th Sep 2003 16:19

Link

Hi
I am new to dark baisc and programing what i am trying to do is use keys ie "z and x to move left and right and p and l to move up and down" to move a letter or and graphic around the screen and i am not having much luck can some guid me. Also can anyone let me know if Game Programming with DarkBasic (International Edition): Book and CD is worth buying?

Hope some one can help
Ian

Spam UK

Back to top

Profile PM Email Website

Kentaree

21

Years of Service

User Offline

Joined: 5th Oct 2002

Location: Clonmel, Ireland

Posted: 30th Sep 2003 17:16

Link

+ Code Snippet

letter$="a"
letterX=0
letterY=0

do
cls
if inkey$()="z" and letterX>0 then letterX=letterX-1
if inkey$()="x" and letterX<640 then letterX=letterX+1
if inkey$()="p" and letterY>0 then letterY=letterY-1
if inkey$()="l" and letterY<4000 then letterY=letterY+1
text letterX, letterY, letter$
loop

You could also use keystate() to get the keys pressed.

I would be unstoppable if I could just get started...

Back to top

Profile PM Email Website

Ian Hughes

20

Years of Service

User Offline

Joined: 29th Sep 2003

Location: UK

Posted: 30th Sep 2003 17:24

Link

can you let me know if Game Programming with DarkBasic (International Edition): Book and CD is worth buying?

Spam UK

Back to top

Profile PM Email Website

Kentaree

21

Years of Service

User Offline

Joined: 5th Oct 2002

Location: Clonmel, Ireland

Posted: 30th Sep 2003 17:25

Link

I'm not sure, I've heard some positive remarks about it, but I havent got it myself, so I cant really say.

I would be unstoppable if I could just get started...

Back to top

Profile PM Email Website

Ian Hughes

20

Years of Service

User Offline

Joined: 29th Sep 2003

Location: UK

Posted: 30th Sep 2003 17:55

Link

Hi
thanks for your help......is it possibale to press to keys at once so they go diagonal also i have notice a program in the demos explaning key values ie if i press x and l it will give me a number for a inkey and a ascii values and mosue x,y and scancode and mouse click is this the imformation i need to use if i want to move my letter a around the screen in all directions

Ian

Spam UK

Back to top

Profile PM Email Website

Kentaree

21

Years of Service

User Offline

Joined: 5th Oct 2002

Location: Clonmel, Ireland

Posted: 30th Sep 2003 18:03

Link

Yes, you would use scancode to get the values, then use keystate(value) using the value from scancode. This will also solve your diagonal problem as keystate can handle more than one keypress at the same time.

I would be unstoppable if I could just get started...

Back to top

Profile PM Email Website

Ian Hughes

20

Years of Service

User Offline

Joined: 29th Sep 2003

Location: UK

Posted: 30th Sep 2003 18:55

Link

Hello again
ok i have been playing around with this code changing the letter e and chaging the speed e.t.c.but what i need to is use my .bmp graphic to move around the screen do i need to use a command like

load bitmap "pics\bitmap0.bmp" and replace this letter$="a"

so i can move the chr around the screen instead of the letter a
so the code would be like

load bitmap "pics\bitmap0.bmp"
letterX=0
letterY=0

do
cls

if inkey$()="z" and letterX>0 then letterX=letterX-1
if inkey$()="x" and letterX<640 then letterX=letterX+1
if inkey$()="p" and letterY>0 then letterY=letterY-1
if inkey$()="l" and letterY<4000 then letterY=letterY+1
text letterX, letterY, letter$
loop

this code does not work as i getan error
hpe you can help

Spam UK

Back to top

Profile PM Email Website

CattleRustler

Retired Moderator

21

Years of Service

User Offline

Joined: 8th Aug 2003

Location: case modding at overclock.net

Posted: 30th Sep 2003 18:59

Link

isn't there a position bitmap command?

-RUST-

Back to top

Profile PM

B0SS

21

Years of Service

User Offline

Joined: 7th Jul 2003

Location: Malta

Posted: 30th Sep 2003 19:01

Link

About books i found Beginner's Guide to Darkbasic game programming very interesting although i have good programming skills

Back to top

Profile PM Email Website

Kentaree

21

Years of Service

User Offline

Joined: 5th Oct 2002

Location: Clonmel, Ireland

Posted: 30th Sep 2003 19:24

Link

You forgot to assign the bitmap a number, in this case probably 1.
Also, the commands used to put text on the screen does not work for bitmaps. For bitmaps, you'd use paste bitmap.

+ Code Snippet

load bitmap "pics\bitmap0.bmp", 1
letterX=0
letterY=0

do
cls

if inkey$()="z" and letterX>0 then letterX=letterX-1
if inkey$()="x" and letterX<640 then letterX=letterX+1
if inkey$()="p" and letterY>0 then letterY=letterY-1
if inkey$()="l" and letterY<4000 then letterY=letterY+1
paste bitmap 1, letterX, letterY
loop

I would be unstoppable if I could just get started...

Back to top

Profile PM Email Website

Ian Hughes

20

Years of Service

User Offline

Joined: 29th Sep 2003

Location: UK

Posted: 30th Sep 2003 20:00

Link

hello
I have pasted this code into dark basicanditcomeback with an error

sintex errpr unknown comamand paste bitmap 1, letterX, letterY

?
any iedas

Spam UK

Back to top

Profile PM Email Website

ReD_eYe

21

Years of Service

User Offline

Joined: 9th Mar 2003

Location: United Kingdom

Posted: 30th Sep 2003 21:14

Link

paste bitmap isn't a command in db, you have to change it to this

+ Code Snippet

load image "pics\bitmap0.bmp", 1
letterX=0
letterY=0

do
cls

if inkey$()="z" and letterX>0 then letterX=letterX-1
if inkey$()="x" and letterX<640 then letterX=letterX+1
if inkey$()="p" and letterY>0 then letterY=letterY-1
if inkey$()="l" and letterY<4000 then letterY=letterY+1
paste image 1, letterX, letterY
loop

hope that helps

Back to top

Profile PM Email Website

Andrew

21

Years of Service

User Offline

Joined: 23rd Aug 2003

Location: United Kindom (what makes it important?)

Posted: 30th Sep 2003 21:17

Link

The code you have pasted has to be edited, you cant just have a code copied and replaced in your DBP.
OK i understand you are new, ok so try looking at some tutorials, like i know a tutroial with something like this on it.

It may help.

The book is actually worth buying, but i recoommend you learn without it, because you learn more.
Hope this helps and good luck!!!

My game will make sure Final Fantasy will never be forgotten.
Remember me because my game will be in the shops in a year or 2.

Back to top

Profile PM Email Website

Ian Hughes

20

Years of Service

User Offline

Joined: 29th Sep 2003

Location: UK

Posted: 30th Sep 2003 22:13

Link

Hi
Thanks you all for your support I wil keep pluging away I hope you will give more support if i need it
Cheers
Ian

Spam UK

Back to top

Profile PM Email Website

Sorry your browser is not supported!

Newcomers DBPro Corner / Moving a letter or a oblect around the screen