Collision problem with sparky - GameCreators Forum

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1beginner1

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Joined: 28th Jun 2009

Location: Belgium

Posted: 3rd Jan 2012 21:41

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Hello, I ran into a problem with my collision. At the beginning I was using two separate .x files for the same LEGO

brick the only difference was that one was turned for 90 degrees. But I want only to use one file. So I tried with "rotate object" and "yrotate object" to rotate my object and then "sc_updateobject". But the collision box doesn't turn 90 degrees. Also tried with built-in commands. The update command is into my loop because the bricks move on the Z axis, this works fine with update command.

+ Code Snippet

//load player
LOAD OBJECT "cone2.x",1
COLOR OBJECT 1,RGB(0,200,150)
POSITION OBJECT 1,0,0,-100
sc_setupobject 1,0,0

//load bricks
LOAD OBJECT "2x6.x",2
YROTATE OBJECT 2,90
FIX OBJECT PIVOT 2
POSITION OBJECT 2,RND(8)*3.2+3.2,0,100

LOAD OBJECT "2x6down.x",3
POSITION OBJECT 3,RND(8)*-3.2-3.2,0,100

LOAD OBJECT "2x6.x",4
POSITION OBJECT 4,RND(10)*3.2+3.2,0,100

LOAD OBJECT "2x6.x",5
POSITION OBJECT 5,RND(10)*-3.2-3.2,0,100

LOAD OBJECT "2x10.x",6
POSITION OBJECT 6,0,0,100

FOR X=2 TO 6
    sc_setupobject X,1,2
NEXT X
sc_updateobject 2

Inside loop

+ Code Snippet

        FOR X=1 TO 6
             sc_updateobject X
        NEXT X
        FOR X=2 TO 6
            if sc_objectcollision (1,X) = 1
              lives=lives-1
              object=X : Time=400
            endif
        NEXT X

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1beginner1

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Location: Belgium

Posted: 4th Jan 2012 13:47

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Here is my complete source code with the 3d models needed.

The agreements for the models http://www.ldraw.org/Article227.html

Object 2 is the one that doesn't work, object3 is how i did it before with an extra file. I hope that someone can help me.

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chafari

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Posted: 4th Jan 2012 20:02

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I have tested your game, and I think that for this king of game you don't need sparkys...you can use normal collision commands and set collision to polygons ....I got up to 51 points

Cheers.

I'm not a grumpy grandpa

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1beginner1

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Location: Belgium

Posted: 4th Jan 2012 20:21 Edited at: 4th Jan 2012 20:22

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Tried with set object collision to polygons but it is less accurate than set object collision to boxes, and both of them got the same problem which i am having with sparky the collision doesn't rotate together with the object.

Maybe it matters don't know but I'am using U77 RC7

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chafari

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Posted: 4th Jan 2012 22:17

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What do you want exactly the blocks to do when collision ? rotate block ??

Cheers.

I'm not a grumpy grandpa

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1beginner1

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Posted: 4th Jan 2012 22:36 Edited at: 4th Jan 2012 22:44

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I have activated sc_drawobjectbounds so you can see that object 2 isn't having his collision box normal. It isn't turned 90 degrees. Object 4 and 5 are the same brick and not turned so collision box is good.
Object 3 is turned inside the model editor and then saved under another name. Don't want to use this method because I don't want to make 360 files for every degree. If I expand my program

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chafari

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Posted: 4th Jan 2012 22:49 Edited at: 4th Jan 2012 23:45

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Let me find out what happens and I will be back.

Edited.

That's strange ...I have activated sc_drawobjectbounds for all objects, and the object bounds are perfect. I'm using windos vista and U77 RC7

Cheers.

I'm not a grumpy grandpa

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1beginner1

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Posted: 4th Jan 2012 23:29 Edited at: 5th Jan 2012 16:37

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I'm using windows 7 64bit and U77 RC7

EDIT: tried a few seconds ago with the same code that I have uploaded on a windows 7 32bit pc but also the same problem

I just find it strange that only I am having this problem because no one else has complained about it. If someone is reading this with a windows 7 pc can he test my code that it works fine like by chafari on its vista pc. So I know the problem is by me or by the OS and DBpro.

Friendly greetings

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aparri

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Posted: 7th Jan 2012 16:28

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1beginner1, I have the same problem... Windows 7 breaks Sparky's collision if you rotate (or scale) an object.

I second chafari on using the built-in collision, otherwise you need to use a separate model for rotated blocks.

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1beginner1

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Posted: 9th Jan 2012 16:54 Edited at: 9th Jan 2012 16:55

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It also breaks the built-in commands I think. This what I'm using as code

+ Code Snippet

LOAD OBJECT "2x6.x",2
TURN OBJECT LEFT 2,90  //also tried rotate object and yrotate object
FIX OBJECT PIVOT 2
POSITION OBJECT 2,RND(8)*3.2+3.2,0,100

FOR X=1 TO 6
    SET OBJECT COLLISION TO BOXES X
    SET OBJECT COLLISION ON X  
NEXT X

And inside loop

+ Code Snippet

        FOR X=2 TO 6
            IF OBJECT COLLISION(1,X)=1
                Lives=Lives-1
                Object=X : Time=400
            ENDIF
        NEXT X

Same problem as with sparky.

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1beginner1

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Posted: 10th Jan 2012 22:05 Edited at: 10th Jan 2012 22:07

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found the problem it is the command fix object pivot. Tested it with this code.

+ Code Snippet

sync on : sync rate 60
autocam off
position camera 0,10,-10 : point camera 0,0,0

make object cube 1,1
position object 1,0,0,0
make object box 2,1,1,2
yrotate object 2,90
position object 2,0,0,0
fix object pivot 2

for X=1 to 2
    set object collision to boxes X
next X
 

DO
    IF LEFTKEY()=1 then MOVE OBJECT LEFT 1,0.1
    IF RIGHTKEY()=1 then MOVE OBJECT RIGHT 1,0.1
    IF UPKEY()= 1 THEN MOVE OBJECT UP 1,0.1
    if downkey()=1 then move object down 1,0.1
    if KEYSTATE(16)=1 then move object 1,0.1
    if keystate(17)=1 then move object 1,-0.1
        
    if object collision(1,2)=1 then text 20,20, "collision"
SYNC
LOOP

is it a bug or am I doing something wrong. I think it is a bug to my opinion.

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revenant chaos

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Posted: 11th Jan 2012 04:13

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1beginner1 - I too think you have found a bug. Using this alternative code works, but it isn't the best solution:

+ Code Snippet

sync on : sync rate 60
autocam off
position camera 0,10,-10 : point camera 0,0,0

make object cube 1,1
position object 1,0,0,0
make object box 2,1,1,2
yrotate object 2,90
position object 2,0,0,0

//Less than ideal alternative to "fix object pivot"
make mesh from object 1,2
delete object 2
make object 2,1
delete mesh 1

for X=1 to 2
    set object collision to boxes X
next X
 

DO
    IF LEFTKEY()=1 then MOVE OBJECT LEFT 1,0.1
    IF RIGHTKEY()=1 then MOVE OBJECT RIGHT 1,0.1
    IF UPKEY()= 1 THEN MOVE OBJECT UP 1,0.1
    if downkey()=1 then move object down 1,0.1
    if KEYSTATE(16)=1 then move object 1,0.1
    if keystate(17)=1 then move object 1,-0.1
        
    if object collision(1,2)=1 then text 20,20, "collision"
SYNC
LOOP

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1beginner1

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Location: Belgium

Posted: 12th Jan 2012 18:37 Edited at: 12th Jan 2012 18:51

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Thanks for the code got only one problem

and that is that I don't use textures for my colors they are inside the 3d model .x So I loose the textures and also need to give make object a value for the image number or I will get an compile error. I can use an non existing value for it to let it compile.

EDIT: went through all the commands in the help file and I think the only two options are OBJECT COLOR and OBJECT TEXTURE. I think the RGB values are public so that wouldn't be so hard. But was hoping for a command like GET OBJECT COLOR

.

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DarkBASIC Professional Discussion / Collision problem with sparky

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