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Woops, forgot to port collision as well.

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This commit is contained in:
toasterbabe 2016-08-23 00:45:26 +01:00
parent e8d65f0b54
commit 14ff3906e1
1 changed files with 78 additions and 0 deletions
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78
src/p_map.c
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@ -469,6 +469,73 @@ static boolean PIT_CheckThing(mobj_t *thing)
if (abs(thing->x - tmx) >= blockdist || abs(thing->y - tmy) >= blockdist)
return true; // didn't hit it
if (thing->flags & MF_PAPERCOLLISION) // CAUTION! Very easy to get stuck inside MF_SOLID objects. Giving the player MF_PAPERCOLLISION is a bad idea unless you know what you're doing.
{
fixed_t cosradius, sinradius;
vertex_t v1, v2; // fake vertexes
line_t junk; // fake linedef
cosradius = FixedMul(thing->radius, FINECOSINE(thing->angle>>ANGLETOFINESHIFT));
sinradius = FixedMul(thing->radius, FINESINE(thing->angle>>ANGLETOFINESHIFT));
v1.x = thing->x - cosradius;
v1.y = thing->y - sinradius;
v2.x = thing->x + cosradius;
v2.y = thing->y + sinradius;
junk.v1 = &v1;
junk.v2 = &v2;
junk.dx = v2.x - v1.x;
junk.dy = v2.y - v1.y;
if (tmthing->flags & MF_PAPERCOLLISION) // more strenuous checking to prevent clipping issues
{
INT32 check1, check2, check3, check4;
cosradius = FixedMul(tmthing->radius, FINECOSINE(tmthing->angle>>ANGLETOFINESHIFT));
sinradius = FixedMul(tmthing->radius, FINESINE(tmthing->angle>>ANGLETOFINESHIFT));
check1 = P_PointOnLineSide(tmx - cosradius, tmy - sinradius, &junk);
check2 = P_PointOnLineSide(tmx + cosradius, tmy + sinradius, &junk);
check3 = P_PointOnLineSide(tmx + tmthing->momx - cosradius, tmy + tmthing->momy - sinradius, &junk);
check4 = P_PointOnLineSide(tmx + tmthing->momx + cosradius, tmy + tmthing->momy + sinradius, &junk);
if ((check1 == check2) && (check2 == check3) && (check3 == check4))
return true; // the line doesn't cross between collider's start or end
}
else
{
if ((P_PointOnLineSide(tmx - tmthing->radius, tmy - tmthing->radius, &junk)
== P_PointOnLineSide(tmx + tmthing->radius, tmy + tmthing->radius, &junk))
&& (P_PointOnLineSide(tmx + tmthing->radius, tmy - tmthing->radius, &junk)
== P_PointOnLineSide(tmx - tmthing->radius, tmy + tmthing->radius, &junk)))
return true; // the line doesn't cross between either pair of opposite corners
}
}
else if (tmthing->flags & MF_PAPERCOLLISION)
{
fixed_t cosradius, sinradius;
vertex_t v1, v2; // fake vertexes
line_t junk; // fake linedef
cosradius = FixedMul(tmthing->radius, FINECOSINE(tmthing->angle>>ANGLETOFINESHIFT));
sinradius = FixedMul(tmthing->radius, FINESINE(tmthing->angle>>ANGLETOFINESHIFT));
v1.x = tmx - cosradius;
v1.y = tmy - sinradius;
v2.x = tmx + cosradius;
v2.y = tmy + sinradius;
junk.v1 = &v1;
junk.v2 = &v2;
junk.dx = v2.x - v1.x;
junk.dy = v2.y - v1.y;
// no need to check whether thing has MF_PAPERCOLLISION, since checked above
if ((P_PointOnLineSide(thing->x - thing->radius, thing->y - thing->radius, &junk)
== P_PointOnLineSide(thing->x + thing->radius, thing->y + thing->radius, &junk))
&& (P_PointOnLineSide(thing->x + thing->radius, thing->y - thing->radius, &junk)
== P_PointOnLineSide(thing->x - thing->radius, thing->y + thing->radius, &junk)))
return true; // the line doesn't cross between either pair of opposite corners
}
#ifdef HAVE_BLUA
{
UINT8 shouldCollide = LUAh_MobjCollide(thing, tmthing); // checks hook for thing's type
@ -1123,6 +1190,17 @@ static boolean PIT_CheckLine(line_t *ld)
if (P_BoxOnLineSide(tmbbox, ld) != -1)
return true;
if (tmthing->flags & MF_PAPERCOLLISION) // Caution! Turning whilst up against a wall will get you stuck. You probably shouldn't give the player this flag.
{
fixed_t cosradius, sinradius;
cosradius = FixedMul(tmthing->radius, FINECOSINE(tmthing->angle>>ANGLETOFINESHIFT));
sinradius = FixedMul(tmthing->radius, FINESINE(tmthing->angle>>ANGLETOFINESHIFT));
if (P_PointOnLineSide(tmx - cosradius, tmy - sinradius, ld)
== P_PointOnLineSide(tmx + cosradius, tmy + sinradius, ld))
return true; // the line doesn't cross between collider's start or end
}
// A line has been hit
// The moving thing's destination position will cross