2d raycast now working ? - GameCreators Forum

Author

Message

haliop_New

User Banned

Posted: 23rd Nov 2014 04:54

im trying to use physicsRayCast(x,y,x1,y1)
but i dont know the math behind turning an angle and distance into X1,Y1
so what i did :

a fake bullet sprite , a simple long 1x500 and rotating towards the mouse positions it looks like the longest sword you have ever seen.
so once i have this and the right angle i can
GetWorldXfromSprite and GetWorldYfromSprite which will give the resulting x1,y1

+ Code Snippet

if physicsRayCast( getSpritexbyOffset(fakeBulletSpr), GetSpriteYByoffset(fakebulletSpr), GetWorldXFromSprite(fakeBulletSpr,0,500),GetWorldYFromSprite(fakeBulletSpr,0,500 )) = 1
	
		x# = getRayCastX ()
		y# = GetRayCastY()
	
		a = CreateSprite(0)
		SetSpritePositionByOFfseT(a,x#,y#)
	endif

however the raycast returns 0 no matter when i hit..
have someone already used it ?
or can share a code or some math ?

thank you for your time.

Back to top

Profile

Markus

Valued Member

21

Years of Service

User Offline

Joined: 10th Apr 2004

Location: Germany

Posted: 23rd Nov 2014 12:15

Link

example with non physics means shape box or circle.
shape must be set

+ Code Snippet

rem MR

target=createsprite(0)
setspritepositionbyoffset(target, 50.,50.0)
setspriteshape(target,2)

bullet=createsprite(0)
setspritepositionbyoffset(bullet,25,25)
setspritecolor(bullet,255,255,0,255)
setspriteshape(bullet,2)

do

    setspriteangle(bullet,getspriteangle(bullet)+0.5)

    if hit then deletesprite(hit)

    rx#=GetWorldXFromSprite(bullet,0,-50)
    ry#=GetWorldYFromSprite(bullet,0,-50)

    if ray then deletesprite(ray)
    ray=createsprite(0)
    setspritecolor(ray,255,0,0,255)
    setspritepositionbyoffset(ray,rx#,ry#)

    //PhysicsRayCast

    if SpriteRayCast( GetSpriteXByOffset(bullet), GetSpriteYByOffset(bullet),rx#,ry# ) = 1
        Print("SpriteRayCast")

            x# = GetRayCastX()
            y# = GetRayCastY()

            hit = CreateSprite(0)
            SetSpritePositionByOffset(hit,x#,y#)
            setspritecolor(hit,255,128,64,255)
    endif
    sync()
loop
end

AGK 108 (B)19 + AppGameKit V2 Alpha .. : Windows 8.1 Pro 64 Bit : AMD Radeon R7 265 : Mac mini OS X 10.10 (Yosemite)

Back to top

Profile PM Email

haliop_New

User Banned

Posted: 23rd Nov 2014 13:02

Link

thank you but i got it working for physics with groups

PhysicsRayCastGroup(group,x,y,x1,y1)
just had to change the groups
it works great. thank you.

Back to top

Profile

Sorry your browser is not supported!

AppGameKit Classic Chat / 2d raycast now working ?