C Array to Blueprint

Development Programming & Scripting Blueprint
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1

Hello, I am attempting to port the Quake 3 movement code into blueprint. What is confusing me is this array used to set velocity.

for (i=0 ; i<3 ; i++) { pm->ps->velocity[i] += accelspeed*wishdir[i]; }

How might I go about creating this in blueprint?

2

I think it’s this but no clue what it’s supposed to achieve without seeing the rest:

294007-annotation-2019-12-15-165704.png
294007-annotation-2019-12-15-165704.png1353×380 72.3 KB

3

==============
PM_Accelerate
Handles user intended acceleration
==============
*/
static void PM_Accelerate( vec3_t wishdir, float wishspeed, float accel ) {
#if 1
// q2 style
int i;
float addspeed, accelspeed, currentspeed;

    currentspeed = DotProduct (pm->ps->velocity, wishdir);
    addspeed = wishspeed - currentspeed;
    if (addspeed <= 0) {
        return;
    }
    accelspeed = accel*pml.frametime*wishspeed;
    if (accelspeed > addspeed) {
        accelspeed = addspeed;
    }
    
    for (i=0 ; i<3 ; i++) {
        pm->ps->velocity[i] += accelspeed*wishdir[i];    
    }

Here is the full function

4

Oh, I don’t think these are arrays. They are vectors. That makes more sense. Kind of same thing, tbh.

So you’re writing a character movement component from scratch?

5

I am trying to replicate the movement of Quake 3, I considered doing it directly in C++ but I lack the UE4 C++ experience to do that. If you could point me in the right direction for C++ that would be great as well