mirror of
https://github.com/ZDoom/gzdoom-gles.git
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156d1e61fd
- Converting the wave speed back to floats, since I'm using sin() instead of the finesine table now. - Pre-shift the quake intensities to avoid extra shifting in GetModIntensity. - Loading old saves will shift the intensities to fixed point but will not convert the fixed wave speeds to floats. The chances of this being in a savegame where the speeds are non-zero is pretty much nil, and int and floating point 0 are bitwise identical (not counting -0.0).
341 lines
9.5 KiB
C++
341 lines
9.5 KiB
C++
#include "templates.h"
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#include "doomtype.h"
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#include "doomstat.h"
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#include "p_local.h"
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#include "actor.h"
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#include "m_bbox.h"
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#include "m_random.h"
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#include "s_sound.h"
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#include "a_sharedglobal.h"
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#include "statnums.h"
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#include "farchive.h"
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static FRandom pr_quake ("Quake");
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IMPLEMENT_POINTY_CLASS (DEarthquake)
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DECLARE_POINTER (m_Spot)
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END_POINTERS
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//==========================================================================
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//
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// DEarthquake :: DEarthquake private constructor
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//
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//==========================================================================
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DEarthquake::DEarthquake()
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: DThinker(STAT_EARTHQUAKE)
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{
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}
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//==========================================================================
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//
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// DEarthquake :: DEarthquake public constructor
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//
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//==========================================================================
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DEarthquake::DEarthquake (AActor *center, int intensityX, int intensityY, int intensityZ, int duration,
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int damrad, int tremrad, FSoundID quakesound, int flags,
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double waveSpeedX, double waveSpeedY, double waveSpeedZ)
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: DThinker(STAT_EARTHQUAKE)
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{
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m_QuakeSFX = quakesound;
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m_Spot = center;
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// Radii are specified in tile units (64 pixels)
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m_DamageRadius = damrad << FRACBITS;
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m_TremorRadius = tremrad << FRACBITS;
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m_IntensityX = intensityX << FRACBITS;
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m_IntensityY = intensityY << FRACBITS;
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m_IntensityZ = intensityZ << FRACBITS;
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m_CountdownStart = duration;
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m_Countdown = duration;
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m_Flags = flags;
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m_WaveSpeedX = (float)waveSpeedX;
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m_WaveSpeedY = (float)waveSpeedY;
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m_WaveSpeedZ = (float)waveSpeedZ;
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}
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//==========================================================================
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//
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// DEarthquake :: Serialize
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//
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//==========================================================================
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void DEarthquake::Serialize (FArchive &arc)
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{
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Super::Serialize (arc);
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arc << m_Spot << m_IntensityX << m_Countdown
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<< m_TremorRadius << m_DamageRadius
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<< m_QuakeSFX;
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if (SaveVersion < 4519)
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{
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m_IntensityY = m_IntensityX;
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m_IntensityZ = 0;
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m_Flags = 0;
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}
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else
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{
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arc << m_IntensityY << m_IntensityZ << m_Flags;
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}
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if (SaveVersion < 4520)
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{
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m_CountdownStart = 0;
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}
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else
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{
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arc << m_CountdownStart;
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}
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if (SaveVersion < 4521)
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{
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m_WaveSpeedX = m_WaveSpeedY = m_WaveSpeedZ = 0;
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m_IntensityX <<= FRACBITS;
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m_IntensityY <<= FRACBITS;
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m_IntensityZ <<= FRACBITS;
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}
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else
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{
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arc << m_WaveSpeedX << m_WaveSpeedY << m_WaveSpeedZ;
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}
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}
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//==========================================================================
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//
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// DEarthquake :: Tick
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//
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// Deals damage to any players near the earthquake and makes sure it's
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// making noise.
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//
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//==========================================================================
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void DEarthquake::Tick ()
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{
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int i;
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if (m_Spot == NULL)
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{
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Destroy ();
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return;
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}
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if (!S_IsActorPlayingSomething (m_Spot, CHAN_BODY, m_QuakeSFX))
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{
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S_Sound (m_Spot, CHAN_BODY | CHAN_LOOP, m_QuakeSFX, 1, ATTN_NORM);
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}
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if (m_DamageRadius > 0)
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{
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for (i = 0; i < MAXPLAYERS; i++)
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{
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if (playeringame[i] && !(players[i].cheats & CF_NOCLIP))
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{
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AActor *victim = players[i].mo;
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fixed_t dist;
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dist = P_AproxDistance (victim->x - m_Spot->x, victim->y - m_Spot->y);
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// Check if in damage radius
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if (dist < m_DamageRadius && victim->z <= victim->floorz)
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{
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if (pr_quake() < 50)
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{
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P_DamageMobj (victim, NULL, NULL, pr_quake.HitDice (1), NAME_None);
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}
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// Thrust player around
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angle_t an = victim->angle + ANGLE_1*pr_quake();
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if (m_IntensityX == m_IntensityY)
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{ // Thrust in a circle
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P_ThrustMobj (victim, an, m_IntensityX << (FRACBITS-1));
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}
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else
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{ // Thrust in an ellipse
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an >>= ANGLETOFINESHIFT;
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// So this is actually completely wrong, but it ought to be good
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// enough. Otherwise, I'd have to use tangents and square roots.
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victim->velx += FixedMul(m_IntensityX << (FRACBITS-1), finecosine[an]);
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victim->vely += FixedMul(m_IntensityY << (FRACBITS-1), finesine[an]);
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}
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}
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}
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}
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}
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if (--m_Countdown == 0)
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{
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if (S_IsActorPlayingSomething(m_Spot, CHAN_BODY, m_QuakeSFX))
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{
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S_StopSound(m_Spot, CHAN_BODY);
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}
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Destroy();
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}
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}
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fixed_t DEarthquake::GetModWave(double waveMultiplier) const
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{
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//QF_WAVE converts intensity into amplitude and unlocks a new property, the wave length.
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//This is, in short, waves per second (full cycles, mind you, from 0 to 360.)
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//Named waveMultiplier because that's as the name implies: adds more waves per second.
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double time = m_Countdown - FIXED2DBL(r_TicFrac);
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return FLOAT2FIXED(sin(waveMultiplier * time * (M_PI * 2 / TICRATE)));
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}
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//==========================================================================
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//
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// DEarthquake :: GetModIntensity
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//
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// Given a base intensity, modify it according to the quake's flags.
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//
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//==========================================================================
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fixed_t DEarthquake::GetModIntensity(fixed_t intensity) const
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{
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assert(m_CountdownStart >= m_Countdown);
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intensity += intensity; // always doubled
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if (m_Flags & (QF_SCALEDOWN | QF_SCALEUP))
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{
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int scalar;
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if ((m_Flags & (QF_SCALEDOWN | QF_SCALEUP)) == (QF_SCALEDOWN | QF_SCALEUP))
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{
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scalar = (m_Flags & QF_MAX) ? MAX(m_Countdown, m_CountdownStart - m_Countdown)
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: MIN(m_Countdown, m_CountdownStart - m_Countdown);
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if (m_Flags & QF_FULLINTENSITY)
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{
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scalar *= 2;
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}
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}
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else if (m_Flags & QF_SCALEDOWN)
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{
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scalar = m_Countdown;
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}
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else // QF_SCALEUP
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{
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scalar = m_CountdownStart - m_Countdown;
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}
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assert(m_CountdownStart > 0);
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intensity = Scale(intensity, scalar, m_CountdownStart);
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}
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return intensity;
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}
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//==========================================================================
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//
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// DEarthquake::StaticGetQuakeIntensity
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//
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// Searches for all quakes near the victim and returns their combined
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// intensity.
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//
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// Pre: jiggers was pre-zeroed by the caller.
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//
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//==========================================================================
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int DEarthquake::StaticGetQuakeIntensities(AActor *victim, FQuakeJiggers &jiggers)
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{
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if (victim->player != NULL && (victim->player->cheats & CF_NOCLIP))
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{
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return 0;
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}
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TThinkerIterator<DEarthquake> iterator(STAT_EARTHQUAKE);
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DEarthquake *quake;
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int count = 0;
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while ( (quake = iterator.Next()) != NULL)
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{
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if (quake->m_Spot != NULL)
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{
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fixed_t dist = P_AproxDistance (victim->x - quake->m_Spot->x,
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victim->y - quake->m_Spot->y);
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if (dist < quake->m_TremorRadius)
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{
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++count;
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fixed_t x = quake->GetModIntensity(quake->m_IntensityX);
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fixed_t y = quake->GetModIntensity(quake->m_IntensityY);
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fixed_t z = quake->GetModIntensity(quake->m_IntensityZ);
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if (!(quake->m_Flags & QF_WAVE))
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{
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if (quake->m_Flags & QF_RELATIVE)
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{
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jiggers.RelIntensityX = MAX(x, jiggers.RelIntensityX);
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jiggers.RelIntensityY = MAX(y, jiggers.RelIntensityY);
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jiggers.RelIntensityZ = MAX(z, jiggers.RelIntensityZ);
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}
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else
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{
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jiggers.IntensityX = MAX(x, jiggers.IntensityX);
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jiggers.IntensityY = MAX(y, jiggers.IntensityY);
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jiggers.IntensityZ = MAX(z, jiggers.IntensityZ);
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}
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}
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else
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{
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fixed_t mx = FixedMul(x, quake->GetModWave(quake->m_WaveSpeedX));
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fixed_t my = FixedMul(y, quake->GetModWave(quake->m_WaveSpeedY));
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fixed_t mz = FixedMul(z, quake->GetModWave(quake->m_WaveSpeedZ));
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// [RH] This only gives effect to the last sine quake. I would
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// prefer if some way was found to make multiples coexist
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// peacefully, but just summing them together is undesirable
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// because they could cancel each other out depending on their
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// relative phases.
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if (quake->m_Flags & QF_RELATIVE)
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{
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jiggers.RelOffsetX = mx;
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jiggers.RelOffsetY = my;
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jiggers.RelOffsetZ = mz;
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}
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else
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{
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jiggers.OffsetX = mx;
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jiggers.OffsetY = my;
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jiggers.OffsetZ = mz;
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}
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}
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}
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}
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}
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return count;
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}
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//==========================================================================
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//
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// P_StartQuake
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//
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//==========================================================================
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bool P_StartQuakeXYZ(AActor *activator, int tid, int intensityX, int intensityY, int intensityZ, int duration,
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int damrad, int tremrad, FSoundID quakesfx, int flags,
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double waveSpeedX, double waveSpeedY, double waveSpeedZ)
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{
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AActor *center;
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bool res = false;
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if (intensityX) intensityX = clamp(intensityX, 1, 9);
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if (intensityY) intensityY = clamp(intensityY, 1, 9);
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if (intensityZ) intensityZ = clamp(intensityZ, 1, 9);
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if (tid == 0)
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{
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if (activator != NULL)
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{
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new DEarthquake(activator, intensityX, intensityY, intensityZ, duration, damrad, tremrad,
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quakesfx, flags, waveSpeedX, waveSpeedY, waveSpeedZ);
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return true;
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}
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}
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else
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{
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FActorIterator iterator (tid);
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while ( (center = iterator.Next ()) )
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{
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res = true;
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new DEarthquake(center, intensityX, intensityY, intensityZ, duration, damrad, tremrad,
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quakesfx, flags, waveSpeedX, waveSpeedY, waveSpeedZ);
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}
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}
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return res;
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}
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bool P_StartQuake(AActor *activator, int tid, int intensity, int duration, int damrad, int tremrad, FSoundID quakesfx)
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{ //Maintains original behavior by passing 0 to intensityZ, and flags.
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return P_StartQuakeXYZ(activator, tid, intensity, intensity, 0, duration, damrad, tremrad, quakesfx, 0, 0, 0, 0);
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}
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