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Change player collision again, they bounce away from each other naturally

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Need to meddle and test with a "minimum bounce" still
This commit is contained in:
Sryder13 2017-11-04 13:19:06 +00:00
parent e5a32eb699
commit 8315ccd475
3 changed files with 27 additions and 36 deletions
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48
src/k_kart.c
View file

@ -1039,12 +1039,12 @@ static void K_KartItemRouletteByDistance(player_t *player, ticcmd_t *cmd)
//{ SRB2kart p_user.c Stuff
void K_KartBilliards(mobj_t *mobj1, mobj_t *mobj2, boolean bounce)
void K_KartBouncing(mobj_t *mobj1, mobj_t *mobj2, boolean bounce)
{
mobj_t *fx;
fixed_t ndistx, ndisty, ndistlength;
fixed_t a1, a2;
fixed_t optimizedP;
fixed_t momdifx, momdify;
fixed_t distx, disty;
fixed_t dot, p;
fixed_t mass1, mass2;
if (!mobj1 || !mobj2)
@ -1064,38 +1064,22 @@ void K_KartBilliards(mobj_t *mobj1, mobj_t *mobj2, boolean bounce)
mass1 = mass2 = 1*FRACUNIT;
if (mobj1->player)
mass1 = (1+mobj1->player->kartweight*20)*FRACUNIT;
mass1 = (mobj1->player->kartweight)*FRACUNIT;
if (mobj2->player)
mass2 = (1+mobj2->player->kartweight*20)*FRACUNIT;
mass2 = (mobj2->player->kartweight)*FRACUNIT;
// find normalised vector from centre of each mobj
ndistx = mobj1->x - mobj2->x;
ndisty = mobj1->y - mobj2->y;
ndistlength = P_AproxDistance(ndistx, ndisty);
ndistx = FixedDiv(ndistx, ndistlength);
ndisty = FixedDiv(ndisty, ndistlength);
momdifx = mobj1->momx - mobj2->momx;
momdify = mobj1->momy - mobj2->momy;
distx = mobj1->x - mobj2->x;
disty = mobj1->y - mobj2->y;
dot = FixedMul(momdifx, distx) + FixedMul(momdify, disty);
p = FixedDiv(dot, FixedMul(distx, distx)+FixedMul(disty, disty));
// find length of the component from the movement along n
a1 = FixedMul(mobj1->momx, ndistx) + FixedMul(mobj1->momy, ndisty);
a2 = FixedMul(mobj2->momx, ndistx) + FixedMul(mobj2->momy, ndisty);
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);
optimizedP = FixedDiv(FixedMul(2*FRACUNIT, a1 - a2), mass1 + mass2);
// calculate new movement of mobj1
mobj1->momx = mobj1->momx - FixedMul(FixedMul(optimizedP, mass2), ndistx);
mobj1->momy = mobj1->momy - FixedMul(FixedMul(optimizedP, mass2), ndisty);
// calculate new movement of mobj2
mobj2->momx = mobj2->momx + FixedMul(FixedMul(optimizedP, mass1), ndistx);
mobj2->momy = mobj2->momy + FixedMul(FixedMul(optimizedP, mass1), ndisty);
// In addition to knocking players based on their momentum into each other
// I will bounce them away from each other based on weight
optimizedP = FixedDiv(cv_collideminimum.value*FRACUNIT, mass1 + mass2); // reuse these variables for helping decide bounce speed
a1 = FixedMul(optimizedP, mass2);
a2 = FixedMul(optimizedP, mass1);
P_Thrust(mobj1, R_PointToAngle2(mobj1->x, mobj1->y, mobj2->x, mobj2->y)+ANGLE_180, a1);
P_Thrust(mobj2, R_PointToAngle2(mobj1->x, mobj1->y, mobj2->x, mobj2->y), a2);
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);
if (bounce == true) // Perform a Goomba Bounce.
mobj1->momz = -mobj1->momz;

2
src/k_kart.h
View file

@ -15,7 +15,7 @@ UINT8 K_GetKartColorByName(const char *name);
void K_RegisterKartStuff(void);
void K_KartBilliards(mobj_t *mobj1, mobj_t *mobj2, boolean bounce);
void K_KartBouncing(mobj_t *mobj1, mobj_t *mobj2, boolean bounce);
void K_KartPlayerThink(player_t *player, ticcmd_t *cmd);
void K_SpinPlayer(player_t *player, mobj_t *source);
void K_SquishPlayer(player_t *player, mobj_t *source);

13
src/p_map.c
View file

@ -1597,6 +1597,12 @@ static boolean PIT_CheckThing(mobj_t *thing)
}
else if (thing->player) // bounce when players collide
{
// see if it went over / under
if (tmthing->z > thing->z + thing->height)
return true; // overhead
if (tmthing->z + tmthing->height < thing->z)
return true; // underneath
if (thing->player->kartstuff[k_growshrinktimer] || thing->player->kartstuff[k_squishedtimer]
|| thing->player->kartstuff[k_bootaketimer] || thing->player->kartstuff[k_spinouttimer]
|| thing->player->kartstuff[k_startimer] || thing->player->kartstuff[k_justbumped]
@ -1608,14 +1614,15 @@ static boolean PIT_CheckThing(mobj_t *thing)
}
if (P_IsObjectOnGround(thing) && tmthing->momz < 0)
K_KartBilliards(tmthing, thing, true);
K_KartBouncing(tmthing, thing, true);
else if (P_IsObjectOnGround(tmthing) && thing->momz < 0)
K_KartBilliards(thing, tmthing, true);
K_KartBouncing(thing, tmthing, true);
else
K_KartBilliards(tmthing, thing, false);
K_KartBouncing(tmthing, thing, false);
thing->player->kartstuff[k_justbumped] = 6;
tmthing->player->kartstuff[k_justbumped] = 6;
return true;
}
// Are you touching the side of the object you're interacting with?
else if (thing->z - FixedMul(FRACUNIT, thing->scale) <= tmthing->z + tmthing->height