Diagonal collision line

waldron

Looking to find a way to create a diagonal/slope collision line in a 2dgame
Between points y.x to y.x

Tratax

@waldron Hey mate, good challenge to solve!

What are you wanting to happen when the collision occurs? Assuming this is for a ramp / jump?

The approach will depend on how you are currently handling input, managing your player and scene variables

waldron

@Tratax I'm using a separate collision array
Wanting to add in sloped rails, slopes and ramps.
I use col and row I'm guessing and plot the points and how I want the player to behave on those points but coding it is the dilemma...

waldron

is there a way i could plot an invisible triangle with collision on my screen that my player will hit ?

waldron

there's only one way i can make this work,
collision is based on the tile size
i have 3 arrays for my levels
1 being collision 2 being background 3 being foreground
if i decrease my tile size to 1 then it will work but really dont want to go down this route if theres a better way?

doing that way will only work on down slopes as my character passes through vertical tiles (side on) another thing i have to address

sahara-min

I don't know if this is what you're looking for but here is a simple function that can detect if a circle and a line segment collide/intersect:

// A, B = line segment endpoints
// C = center of circle
// r = circle radius
function segmentCircleIntersect(A, B, C, r)
    u = B - A
    v = C - A
    t = clamp(dot(u, v) / dot(u, u), 0, 1)
    P = A + t * u
    d = distance(C, P)
return d < r

waldron

@sahara-min thankyou il give this a go i pretty much abandoned hope but i can see this working