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Fix use of easing functions, add distance buffer

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Sally Coolatta 2023-09-23 06:11:40 -04:00
parent e6a19362fc
commit ca0b5902ba
1 changed files with 8 additions and 4 deletions
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12
src/p_spec.c
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@ -9412,20 +9412,24 @@ void P_DoQuakeOffset(UINT8 view, mappoint_t *viewPos, mappoint_t *offset)
ir = quake->intensity;
// Modulate with time remaining.
ir = Easing_InOutSine(FRACUNIT * (quake->time + 1) / quake->startTime, ir, 0);
const fixed_t timeEase = (FRACUNIT * ((quake->startTime - quake->time) - 1)) / quake->startTime;
ir = Easing_InCubic(timeEase, ir, 0);
// Modulate with distance from epicenter, if it exists.
if (quake->radius > 0 && quake->epicenter != NULL)
{
fixed_t epidist = P_AproxDistance(
const fixed_t distBuffer = 256 * mapobjectscale; // add a small buffer zone before it starts to drop off
const fixed_t epidist = P_AproxDistance(
P_AproxDistance(
viewPos->x - quake->epicenter->x,
viewPos->y - quake->epicenter->y
),
viewPos->z - quake->epicenter->z
);
) - distBuffer;
ir = Easing_InOutSine(min(FRACUNIT, FixedDiv(epidist, quake->radius)), ir, 0);
const fixed_t distEase = min(FixedDiv(max(epidist, 0), quake->radius), FRACUNIT);
ir = Easing_InCubic(distEase, ir, 0);
}
addZ += ir;