mirror of https://github.com/AxioDL/metaforce.git
89 lines
2.6 KiB
C++
89 lines
2.6 KiB
C++
#include "Runtime/Weapon/CBurstFire.hpp"
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#include <algorithm>
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#include <cmath>
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#include "Runtime/GameGlobalObjects.hpp"
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#include "Runtime/CStateManager.hpp"
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#include <zeus/Math.hpp>
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namespace urde {
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CBurstFire::CBurstFire(const SBurst* const* burstDefs, s32 firstBurstCount) : x10_firstBurstCounter(firstBurstCount) {
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while (*burstDefs) {
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x1c_burstDefs.push_back(*burstDefs);
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++burstDefs;
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}
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}
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void CBurstFire::Update(CStateManager& mgr, float dt) {
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x14_24_shouldFire = false;
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if (x18_curBursts) {
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x8_timeToNextShot -= dt;
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if (x8_timeToNextShot < 0.f) {
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x4_angleIdx += 1;
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if (x18_curBursts->x4_shotAngles[x4_angleIdx] > 0) {
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x14_24_shouldFire = true;
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x8_timeToNextShot = x18_curBursts->x24_timeToNextShot;
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x8_timeToNextShot += (mgr.GetActiveRandom()->Float() - 0.5f) * x18_curBursts->x28_timeToNextShotVariance;
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} else {
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x18_curBursts = nullptr;
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}
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}
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}
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}
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zeus::CVector3f CBurstFire::GetDistanceCompensatedError(float dist, float maxErrDist) const {
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float xErr = GetMaxXError();
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float zErr = GetMaxZError();
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xErr = std::min(xErr, dist / maxErrDist * xErr);
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zErr = std::min(zErr, dist / maxErrDist * zErr);
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return GetError(xErr, zErr);
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}
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void CBurstFire::Start(CStateManager& mgr) {
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s32 burstIdx = -1;
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const SBurst* bursts = x1c_burstDefs[x0_burstType];
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if (x10_firstBurstCounter-- > 0) {
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burstIdx = xc_firstBurstIdx < 0 ? 0 : xc_firstBurstIdx;
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} else {
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int random = mgr.GetActiveRandom()->Range(0, 100);
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int advanceAccum = 0;
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do {
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burstIdx += 1;
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s32 advanceWeight = bursts[burstIdx].x0_randomSelectionWeight;
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if (advanceWeight == 0) {
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advanceAccum = 100;
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burstIdx -= 1;
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}
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advanceAccum += advanceWeight;
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} while (random > advanceAccum);
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}
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x18_curBursts = &bursts[burstIdx];
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x4_angleIdx = -1;
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x8_timeToNextShot = 0.f;
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x14_24_shouldFire = false;
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}
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zeus::CVector3f CBurstFire::GetError(float xMag, float zMag) const {
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zeus::CVector3f ret;
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if (x14_24_shouldFire && x18_curBursts) {
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s32 r0 = x18_curBursts->x4_shotAngles[x4_angleIdx];
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if (x14_25_avoidAccuracy && (r0 == 4 || r0 == 12))
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r0 = x4_angleIdx > 0 ? x18_curBursts->x4_shotAngles[x4_angleIdx - 1]
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: x18_curBursts->x4_shotAngles[x4_angleIdx + 1];
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if (r0 > 0) {
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float angle = r0 * zeus::degToRad(-22.5f);
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ret.x() = std::cos(angle) * xMag;
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ret.z() = std::sin(angle) * zMag;
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}
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}
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return ret;
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}
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float CBurstFire::GetMaxXError() const { return g_tweakPlayer->GetPlayerXYHalfExtent() * 3.625f + 0.2f; }
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float CBurstFire::GetMaxZError() const { return g_tweakPlayer->GetEyeOffset(); }
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} // namespace urde
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