mirror of https://github.com/AxioDL/metaforce.git
107 lines
2.5 KiB
C++
107 lines
2.5 KiB
C++
#include "CRealElement.hpp"
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#include "CParticleGlobals.hpp"
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namespace Retro
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{
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CREKeyframeEmitter::CREKeyframeEmitter(CInputStream& in)
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{
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x4_percent = in.readUint32Big();
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x8_unk1 = in.readUint32Big();
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xc_loop = in.readBool();
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xd_unk2 = in.readBool();
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x10_loopEnd = in.readUint32Big();
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x14_loopStart = in.readUint32Big();
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u32 count = in.readUint32Big();
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x18_keys.reserve(count);
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for (u32 i=0 ; i<count ; ++i)
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x18_keys.push_back(in.readFloatBig());
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}
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bool CREKeyframeEmitter::GetValue(int frame, float& valOut) const
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{
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if (!x4_percent)
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{
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int emitterTime = CParticleGlobals::g_emitterTimeInt;
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int calcKey = emitterTime;
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if (xc_loop)
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{
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if (emitterTime >= x10_loopEnd)
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{
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int v1 = emitterTime - x14_loopStart;
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int v2 = x10_loopEnd - x14_loopStart;
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calcKey = v1 % v2;
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calcKey += x14_loopStart;
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}
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}
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else
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{
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int v1 = x10_loopEnd - 1;
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if (v1 < emitterTime)
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calcKey = v1;
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}
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valOut = x18_keys[calcKey];
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}
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else
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{
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int ltPerc = CParticleGlobals::g_particleLifetimePercentTweenInt;
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float ltPercRem = CParticleGlobals::g_particleLifetimePercentTweenIntFloatRem;
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if (ltPerc == 100)
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valOut = x18_keys[100];
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else
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valOut = x18_keys[ltPerc+1] * ltPercRem + (1.0f - ltPercRem) * x18_keys[ltPerc];
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}
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return false;
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}
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bool CRELifetimeTween::GetValue(int frame, float& valOut) const
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{
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float ltFac = frame / CParticleGlobals::g_particleLifetimeFloat;
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float a, b;
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x4_a->GetValue(frame, a);
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x8_b->GetValue(frame, b);
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valOut = b * ltFac + (1.0f - ltFac) * a;
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return false;
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}
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bool CREConstant::GetValue(int frame, float& valOut) const
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{
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valOut = x4_val;
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return false;
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}
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bool CRETimeChain::GetValue(int frame, float& valOut) const
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{
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int v;
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xc_swFrame->GetValue(frame, v);
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if (frame >= v)
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return x8_b->GetValue(frame, valOut);
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else
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return x4_a->GetValue(frame, valOut);
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}
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bool CREAdd::GetValue(int frame, float& valOut) const
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{
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float a, b;
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x4_a->GetValue(frame, a);
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x8_b->GetValue(frame, b);
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valOut = a + b;
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return false;
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}
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bool CREClamp::GetValue(int frame, float &valOut) const
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{
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float a, b;
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x4_min->GetValue(frame, a);
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x8_max->GetValue(frame, b);
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xc_val->GetValue(frame, valOut);
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if (valOut > b)
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valOut = b;
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if (valOut < a)
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valOut = a;
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return false;
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}
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}
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