How to make a large arrow pointer for a PC game, with full functionality?

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Mark Garrett

Reviewed AGK on Steam

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Joined: 10th Jul 2005

Location: California, US

Posted: 19th Aug 2017 22:08 Edited at: 19th Aug 2017 22:22

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I made a larger arrow pointer on my pc game, but, problem is, the arrow is made out of a sprite, and therefore cannot detect sprites underneath itself.... it only detects itself.

Because since the pointer is made out of a sprite, it cannot detect the sprites underneath it, and therefore ends up blocking itself from the sprites underneath.

The pointer only detects itself, and therefore says that the sprite underneath it is itself (sprite #499)

+ Code Snippet

LoadImage ( 499, "Arrow 1b.png",1)
CreateSprite ( 499, 499)
SetRawMouseVisible(0)

get_sprite_hit:   // (sub-routine)

SetSpritePosition ( 499, GetPointerX(), GetPointerY())
x = GetPointerX()
y = GetPointerY()
sp = GetSpriteHit( x, y )   //  ......here, result = sprite #499 ,  which is utterly useless.

return

So, I guess my question is - Is there a way to replace the mouse pointer completely with a larger ?

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Supertino

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Posted: 19th Aug 2017 22:14 Edited at: 19th Aug 2017 22:27

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You could maybe offset the pointer sprite by 1 px

+ Code Snippet

LoadImage ( 499, "Arrow 1b.png",1)
CreateSprite ( 499, 499)
SetRawMouseVisible(0)
 
get_sprite_hit:   // (sub-routine)
 
SetSpritePosition ( 499, GetPointerX()+1, GetPointerY()+1)
x = GetPointerX()
y = GetPointerY()
sp = GetSpriteHit( x, y )   //  ......here, result = sprite #499 ,  which is utterly useless.
return

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Mark Garrett

Reviewed AGK on Steam

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Location: California, US

Posted: 19th Aug 2017 22:25 Edited at: 19th Aug 2017 22:29

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No, I have tried that, and thought the same thing,

but the 'windows 7' mouse pointer is located above sprite #499, and therefore cannot detect sprites underneath sprite #499..(sprite #499 being the new pointer)

In other words, the new mouse pointer blocks detection of sprites underneath it, because, it is, in itself, in the way.

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Supertino

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Posted: 19th Aug 2017 22:28 Edited at: 19th Aug 2017 22:43

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You could maybe offset the pointer sprite by 1 px

+ Code Snippet

LoadImage ( 499, "Arrow 1b.png",1)
CreateSprite ( 499, 499)
SetRawMouseVisible(0)
 
get_sprite_hit:   // (sub-routine)
 
SetSpritePosition ( 499, GetPointerX()+1, GetPointerY()+1)
x = GetPointerX()
y = GetPointerY()
sp = GetSpriteHit( x, y )   //  ......here, result = sprite #499 ,  which is utterly useless.
return

i think you need to go another route, keep the pointer sprite, but make an invisible 1x1px sprite that sits at the top left of the pointer sprite but make it not visible then check for collections

+ Code Snippet


LoadImage ( 499, "Arrow 1b.png",1)
CreateSprite ( 499, 499)
SetRawMouseVisible(0)

CreateSprite ( 1, 499)
setspritesize(1,1,1)
setspritevisable(1,0)


get_sprite_hit:   // (sub-routine)
 
SetSpritePosition ( 499, GetPointerX(), GetPointerY())
SetSpritePosition ( 1, GetPointerX(), GetPointerY())
x = GetPointerX()
y = GetPointerY()

for i=2 To 498
if Not GetSpriteExists(i) then continue
   if GetSpriteCollision(1,i)
         Print("hitsprite:"+str(i))
   endif
next  

return

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Mark Garrett

Reviewed AGK on Steam

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Posted: 19th Aug 2017 22:46

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Cool !, yes, is working good now. Good suggestion.

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CJB

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Location: Essex, UK

Posted: 23rd Aug 2017 16:29

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I like to group my sprites using SetSpriteGroup. That way I can use the "getspritehitgroup" command to check for clicks.

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Uzmadesign

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Kevin Cross

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Posted: 23rd Aug 2017 16:54

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I had the same problem the other day. I found that it works if you move the mouse pointer to where you've touched after you've detected the sprite hit i.e.

spriteHit = GetSpriteHit(GetPointerX(), GetPointerY())
SetSpritePositionByOffset(spritePointer, GetPointerX(), GetPointerY())

Something like that. I wrote this away from a copy of AppGameKit but you get the idea.

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fubarpk

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Posted: 25th Aug 2017 07:17

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you could use the following function

+ Code Snippet

function Collision(spr as integer)
contact = GetSpriteFirstContact(spr)
//result=GetSpriteNextContact()
result= getSpriteContactSpriteID2()
endfunction result

Or ofcourse you could group the sprites as previously suggested
and use GetSpriteHitGroup(groupId,x,y)

fubar

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MikeMax

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Posted: 25th Aug 2017 11:24 Edited at: 25th Aug 2017 11:24

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it depends on the situation, but I often use GetSpriteHitTest() command with array of known sprites or known buttons. It's working like a charm even with a custom sprite as cursor

(only checks if it's overlapping)

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AppGameKit Classic Chat / How to make a large arrow pointer for a PC game, with full functionality?

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