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Fix bumps sometimes shooting off stupidly fast

This commit is contained in:
fickleheart 2019-02-18 22:36:26 -06:00
parent 32d1f75199
commit a4c8388f3b
1 changed files with 35 additions and 34 deletions
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69
src/k_kart.c
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@ -1056,7 +1056,7 @@ void K_KartBouncing(mobj_t *mobj1, mobj_t *mobj2, boolean bounce, boolean solid)
mobj_t *fx;
fixed_t momdifx, momdify;
fixed_t distx, disty;
fixed_t dot, p;
fixed_t dot, force;
fixed_t mass1, mass2;
if (!mobj1 || !mobj2)
@ -1114,6 +1114,35 @@ void K_KartBouncing(mobj_t *mobj1, mobj_t *mobj2, boolean bounce, boolean solid)
momdifx = mobj1->momx - mobj2->momx;
momdify = mobj1->momy - mobj2->momy;
// Adds the OTHER player's momentum, so that it reduces the chance of you being "inside" the other object
distx = (mobj1->x + mobj2->momx) - (mobj2->x + mobj1->momx);
disty = (mobj1->y + mobj2->momy) - (mobj2->y + mobj1->momy);
if (distx == 0 && disty == 0)
// if there's no distance between the 2, they're directly on top of each other, don't run this
return;
{ // Normalize distance to the sum of the two objects' radii, since in a perfect world that would be the distance at the point of collision...
fixed_t dist = P_AproxDistance(distx, disty) ?: 1;
fixed_t nx = FixedDiv(distx, dist);
fixed_t ny = FixedDiv(disty, dist);
distx = FixedMul(mobj1->radius+mobj2->radius, nx);
disty = FixedMul(mobj1->radius+mobj2->radius, ny);
CONS_Printf("dist %f %f %d %d %d %d\n",
FIXED_TO_FLOAT(P_AproxDistance(distx, disty)),
FIXED_TO_FLOAT(P_AproxDistance(momdifx, momdify)),
mobj1->momx, mobj1->momy, mobj2->momx, mobj2->momy);
if (momdifx == 0 && momdify == 0)
{
// If there's no momentum difference, they're moving at exactly the same rate. Pretend they moved into each other.
momdifx = -nx;
momdify = -ny;
}
}
// if the speed difference is less than this let's assume they're going proportionately faster from each other
if (P_AproxDistance(momdifx, momdify) < (25*mapobjectscale))
{
@ -1124,34 +1153,6 @@ void K_KartBouncing(mobj_t *mobj1, mobj_t *mobj2, boolean bounce, boolean solid)
momdify = FixedMul((25*mapobjectscale), normalisedy);
}
// Adds the OTHER player's momentum, so that it reduces the chance of you being "inside" the other object
distx = (mobj1->x + mobj2->momx) - (mobj2->x + mobj1->momx);
disty = (mobj1->y + mobj2->momy) - (mobj2->y + mobj1->momy);
{ // Don't allow dist to get WAY too low, that it pushes you stupidly huge amounts, or backwards...
fixed_t dist = P_AproxDistance(distx, disty);
fixed_t nx = FixedDiv(distx, dist);
fixed_t ny = FixedDiv(disty, dist);
if (P_AproxDistance(distx, disty) < (3*mobj1->radius)/4)
{
distx = FixedMul((3*mobj1->radius)/4, nx);
disty = FixedMul((3*mobj1->radius)/4, ny);
}
if (P_AproxDistance(distx, disty) < (3*mobj2->radius)/4)
{
distx = FixedMul((3*mobj2->radius)/4, nx);
disty = FixedMul((3*mobj2->radius)/4, ny);
}
}
if (distx == 0 && disty == 0)
{
// if there's no distance between the 2, they're directly on top of each other, don't run this
return;
}
dot = FixedMul(momdifx, distx) + FixedMul(momdify, disty);
if (dot >= 0)
@ -1160,7 +1161,7 @@ void K_KartBouncing(mobj_t *mobj1, mobj_t *mobj2, boolean bounce, boolean solid)
return;
}
p = FixedDiv(dot, FixedMul(distx, distx)+FixedMul(disty, disty));
force = FixedDiv(dot, FixedMul(distx, distx)+FixedMul(disty, disty));
if (bounce == true && mass2 > 0) // Perform a Goomba Bounce.
mobj1->momz = -mobj1->momz;
@ -1175,14 +1176,14 @@ void K_KartBouncing(mobj_t *mobj1, mobj_t *mobj2, boolean bounce, boolean solid)
if (mass2 > 0)
{
mobj1->momx = mobj1->momx - FixedMul(FixedMul(FixedDiv(2*mass2, mass1 + mass2), p), distx);
mobj1->momy = mobj1->momy - FixedMul(FixedMul(FixedDiv(2*mass2, mass1 + mass2), p), disty);
mobj1->momx = mobj1->momx - FixedMul(FixedMul(FixedDiv(2*mass2, mass1 + mass2), force), distx);
mobj1->momy = mobj1->momy - FixedMul(FixedMul(FixedDiv(2*mass2, mass1 + mass2), force), disty);
}
if (mass1 > 0 && solid == false)
{
mobj2->momx = mobj2->momx - FixedMul(FixedMul(FixedDiv(2*mass1, mass1 + mass2), p), -distx);
mobj2->momy = mobj2->momy - FixedMul(FixedMul(FixedDiv(2*mass1, mass1 + mass2), p), -disty);
mobj2->momx = mobj2->momx - FixedMul(FixedMul(FixedDiv(2*mass1, mass1 + mass2), force), -distx);
mobj2->momy = mobj2->momy - FixedMul(FixedMul(FixedDiv(2*mass1, mass1 + mass2), force), -disty);
}
// Do the bump fx when we've CONFIRMED we can bump.