NaaLaa - [HELP] md2 with two models

Hi Marcus,

I would like to put two models of md2 on the left (texture2) and and on the right (texture1),

[attachment=500][attachment=501]
click the images to zoom in

so they should stand face to face and ready to fight (such as in Street Fighter).

Question #1
What's wrong with this code ? only 1 texture model is drawn.

Code:
    'model 1: Translate and rotate.

    pos = 1.5 'on the right

    S3D_Translate(pos, 0.25, distance)

    S3D_RotateY(rad(rotY))

    S3D_Texture(texture)

    anim.Render(model)

    'model 2

    pos = -1 'on the left

    S3D_Translate(-1, 0.25, distance)

    S3D_RotateY(rad(rotY))

    S3D_Texture(texture2)

    anim.Render(model)

Question #2
What is the best way for collision detection between the 3D models ?

You may reply on the weekend, when you are not working. Don't worry, it's not urgent. Big Grin

Thank you

He's actually somewhere behind the "camera" Smile

The transformations (S3D_Translate, S3D_Rotate) you apply to position the first guy are still in effect when you position the second guy. Among all, you've applied a rotation along the y-axis, resulting in an x-axis that is pointing straight into the screen (so, the negative x value in the second S3D_Translate puts the other guy behind the camera).

Push and pop when drawing objects to restore the transformation matrix and you'll be fine.

Code:
    'model 1: Translate and rotate.

    pos = 1.5 'on the right

    S3D_Push()

    S3D_Translate(pos, 0.25, distance)

    S3D_RotateY(rad(rotY))

    S3D_Texture(texture)

    anim.Render(model)

    S3D_Pop()

    'model 2

    pos = -1 'on the left

    S3D_Push()

    S3D_Translate(-1, 0.25, distance)

    S3D_RotateY(rad(rotY))

    S3D_Texture(texture2)

    anim.Render(model)

    S3D_Pop()

The second question will have to wait, but probably the answer will be about cheating - actually trying to determine which triangles intersect with eachother would be very inefficient. In the robowack 3-demo the player can collide with enemies and enemies with other enemies, but those are just simple 2d tests combined with push away-effects.

Thanks, Marcus !
It's working well

Big Grin

(09-09-2025, 09:21 AM)1micha.elok Wrote: [ -> ]Thanks, Marcus !
It's working well

Cool! Tekken but with DOOM Guy!

I'm into an experiment with something Star Fox (SNES) like these days. But ... Star Wars: Outlaws on Switch 2 kind of prevents me from programming after work Big Grin