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#include "common.h"
#include "patcher.h"
#include "PedIK.h"
#include "Ped.h"
#include "General.h"
WRAPPER bool CPedIK::PointGunInDirection(float phi, float theta) { EAXJMP(0x4ED9B0); }
WRAPPER bool CPedIK::PointGunAtPosition(CVector *position) { EAXJMP(0x4ED920); }
WRAPPER void CPedIK::ExtractYawAndPitchLocal(RwMatrixTag*, float*, float*) { EAXJMP(0x4ED2C0); }
WRAPPER void CPedIK::ExtractYawAndPitchWorld(RwMatrixTag*, float*, float*) { EAXJMP(0x4ED140); }
// TODO: These are hardcoded into exe, reverse it.
LimbMovementInfo &CPedIK::ms_torsoInfo = *(LimbMovementInfo*)0x5F9F8C;
LimbMovementInfo &CPedIK::ms_headInfo = *(LimbMovementInfo*)0x5F9F5C;
CPedIK::CPedIK(CPed *ped)
{
m_ped = ped;
m_flags = 0;
m_headOrient.phi = 0.0f;
m_headOrient.theta = 0.0f;
m_torsoOrient.phi = 0.0f;
m_torsoOrient.theta = 0.0f;
m_upperArmOrient.phi = 0.0f;
m_upperArmOrient.theta = 0.0f;
m_lowerArmOrient.phi = 0.0f;
m_lowerArmOrient.theta = 0.0f;
}
void
CPedIK::RotateTorso(AnimBlendFrameData *animBlend, LimbOrientation *limb, bool changeRoll)
{
RwFrame *f = animBlend->frame;
RwMatrix *mat = CPedIK::GetWorldMatrix(RwFrameGetParent(f), RwMatrixCreate());
RwV3d upVector = { mat->right.z, mat->up.z, mat->at.z };
RwV3d rightVector;
RwV3d pos = RwFrameGetMatrix(f)->pos;
// rotation == 0 -> looking in y direction
// left? vector
float c = Cos(m_ped->m_fRotationCur);
float s = Sin(m_ped->m_fRotationCur);
rightVector.x = -(c*mat->right.x + s*mat->right.y);
rightVector.y = -(c*mat->up.x + s*mat->up.y);
rightVector.z = -(c*mat->at.x + s*mat->at.y);
if(changeRoll){
// Used when aiming only involves over the legs.(canAimWithArm)
// Automatically changes roll(forward rotation) axis of the parts above upper legs while moving, based on position of upper legs.
// Not noticeable in normal conditions...
RwV3d forwardVector;
CVector inversedForward = CrossProduct(CVector(0.0f, 0.0f, 1.0f), mat->up);
inversedForward.Normalise();
float dotProduct = DotProduct(mat->at, inversedForward);
if(dotProduct > 1.0f) dotProduct = 1.0f;
if(dotProduct < -1.0f) dotProduct = -1.0f;
float alpha = Acos(dotProduct);
if(mat->at.z < 0.0f)
alpha = -alpha;
forwardVector.x = s * mat->right.x - c * mat->right.y;
forwardVector.y = s * mat->up.x - c * mat->up.y;
forwardVector.z = s * mat->at.x - c * mat->at.y;
float curYaw, curPitch;
CPedIK::ExtractYawAndPitchWorld(mat, &curYaw, &curPitch);
RwMatrixRotate(RwFrameGetMatrix(f), &rightVector, RADTODEG(limb->theta), rwCOMBINEPOSTCONCAT);
RwMatrixRotate(RwFrameGetMatrix(f), &upVector, RADTODEG(limb->phi - (curYaw - m_ped->m_fRotationCur)), rwCOMBINEPOSTCONCAT);
RwMatrixRotate(RwFrameGetMatrix(f), &forwardVector, RADTODEG(alpha), rwCOMBINEPOSTCONCAT);
}else{
// pitch
RwMatrixRotate(RwFrameGetMatrix(f), &rightVector, RADTODEG(limb->theta), rwCOMBINEPOSTCONCAT);
// yaw
RwMatrixRotate(RwFrameGetMatrix(f), &upVector, RADTODEG(limb->phi), rwCOMBINEPOSTCONCAT);
}
RwFrameGetMatrix(f)->pos = pos;
RwMatrixDestroy(mat);
}
void
CPedIK::GetComponentPosition(RwV3d *pos, PedNode node)
{
RwFrame *f;
RwMatrix *mat;
f = m_ped->GetNodeFrame(node);
mat = RwFrameGetMatrix(f);
*pos = mat->pos;
for (f = RwFrameGetParent(f); f; f = RwFrameGetParent(f))
RwV3dTransformPoints(pos, pos, 1, RwFrameGetMatrix(f));
}
RwMatrix*
CPedIK::GetWorldMatrix(RwFrame *source, RwMatrix *destination)
{
RwFrame *i;
*destination = *RwFrameGetMatrix(source);
for (i = RwFrameGetParent(source); i; i = RwFrameGetParent(i))
RwMatrixTransform(destination, RwFrameGetMatrix(i), rwCOMBINEPOSTCONCAT);
return destination;
}
LimbMoveStatus
CPedIK::MoveLimb(LimbOrientation &limb, float approxPhi, float approxTheta, LimbMovementInfo &moveInfo)
{
LimbMoveStatus result = ONE_ANGLE_COULDNT_BE_SET_EXACTLY;
// phi
if (limb.phi > approxPhi) {
limb.phi -= moveInfo.yawD;
} else if (limb.phi < approxPhi) {
limb.phi += moveInfo.yawD;
}
if (Abs(limb.phi - approxPhi) < moveInfo.yawD) {
limb.phi = approxPhi;
result = ANGLES_SET_EXACTLY;
}
if (limb.phi > moveInfo.maxYaw || limb.phi < moveInfo.minYaw) {
limb.phi = clamp(limb.phi, moveInfo.minYaw, moveInfo.maxYaw);
result = ANGLES_SET_TO_MAX;
}
// theta
if (limb.theta > approxTheta) {
limb.theta -= moveInfo.pitchD;
} else if (limb.theta < approxTheta) {
limb.theta += moveInfo.pitchD;
}
if (Abs(limb.theta - approxTheta) < moveInfo.pitchD)
limb.theta = approxTheta;
else
result = ONE_ANGLE_COULDNT_BE_SET_EXACTLY;
if (limb.theta > moveInfo.maxPitch || limb.theta < moveInfo.minPitch) {
limb.theta = clamp(limb.theta, moveInfo.minPitch, moveInfo.maxPitch);
result = ANGLES_SET_TO_MAX;
}
return result;
}
bool
CPedIK::RestoreGunPosn(void)
{
LimbMoveStatus limbStatus = MoveLimb(m_torsoOrient, 0.0f, 0.0f, ms_torsoInfo);
RotateTorso(m_ped->m_pFrames[PED_MID], &m_torsoOrient, false);
return limbStatus == ANGLES_SET_EXACTLY;
}
bool
CPedIK::LookInDirection(float phi, float theta)
{
bool success = true;
AnimBlendFrameData *frameData = m_ped->m_pFrames[PED_HEAD];
RwFrame *frame = frameData->frame;
RwMatrix *frameMat = RwFrameGetMatrix(frame);
if (!(frameData->flag & AnimBlendFrameData::IGNORE_ROTATION)) {
frameData->flag |= AnimBlendFrameData::IGNORE_ROTATION;
CPedIK::ExtractYawAndPitchLocal(frameMat, &m_headOrient.phi, &m_headOrient.theta);
}
RwMatrix *worldMat = RwMatrixCreate();
worldMat = CPedIK::GetWorldMatrix(RwFrameGetParent(frame), worldMat);
float alpha, beta;
CPedIK::ExtractYawAndPitchWorld(worldMat, &alpha, &beta);
RwMatrixDestroy(worldMat);
alpha += m_torsoOrient.phi;
float neededPhiTurn = CGeneral::LimitRadianAngle(phi - alpha);
beta *= cos(neededPhiTurn);
float neededThetaTurn = CGeneral::LimitRadianAngle(theta - beta);
LimbMoveStatus headStatus = CPedIK::MoveLimb(m_headOrient, neededPhiTurn, neededThetaTurn, ms_headInfo);
if (headStatus == ANGLES_SET_TO_MAX)
success = false;
if (headStatus != ANGLES_SET_EXACTLY && !(m_flags & LOOKING)) {
float remainingTurn = CGeneral::LimitRadianAngle(phi - m_ped->m_fRotationCur);
if (CPedIK::MoveLimb(m_torsoOrient, remainingTurn, theta, ms_torsoInfo))
success = true;
}
CMatrix nextFrame = CMatrix(frameMat);
CVector framePos = nextFrame.GetPosition();
nextFrame.SetRotateZ(m_headOrient.theta);
nextFrame.RotateX(m_headOrient.phi);
nextFrame.GetPosition() += framePos;
nextFrame.UpdateRW();
if (!(m_flags & LOOKING))
RotateTorso(m_ped->m_pFrames[PED_MID], &m_torsoOrient, false);
return success;
}
bool
CPedIK::LookAtPosition(CVector const &pos)
{
float phiToFace = CGeneral::GetRadianAngleBetweenPoints(
pos.x, pos.y,
m_ped->GetPosition().x, m_ped->GetPosition().y);
float thetaToFace = CGeneral::GetRadianAngleBetweenPoints(
pos.z, (m_ped->GetPosition() - pos).Magnitude2D(),
m_ped->GetPosition().z, 0.0f);
return LookInDirection(phiToFace, thetaToFace);
}
STARTPATCHES
InjectHook(0x4ED0F0, &CPedIK::GetComponentPosition, PATCH_JUMP);
InjectHook(0x4ED060, &CPedIK::GetWorldMatrix, PATCH_JUMP);
InjectHook(0x4EDDB0, &CPedIK::RotateTorso, PATCH_JUMP);
InjectHook(0x4ED440, &CPedIK::MoveLimb, PATCH_JUMP);
InjectHook(0x4EDD70, &CPedIK::RestoreGunPosn, PATCH_JUMP);
InjectHook(0x4ED620, &CPedIK::LookInDirection, PATCH_JUMP);
InjectHook(0x4ED590, &CPedIK::LookAtPosition, PATCH_JUMP);
ENDPATCHES
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