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/* This file is part of the Spring engine (GPL v2 or later), see LICENSE.html */
#include "ScriptMoveType.h"
#include "Map/Ground.h"
#include "Map/MapInfo.h"
#include "Sim/Misc/Wind.h"
#include "Sim/Units/UnitDef.h"
#include "Sim/Units/UnitTypes/Building.h"
#include "System/EventHandler.h"
#include "System/Matrix44f.h"
#include "System/myMath.h"
CR_BIND_DERIVED(CScriptMoveType, AMoveType, (NULL))
CR_REG_METADATA(CScriptMoveType, (
CR_MEMBER(tag),
CR_MEMBER(extrapolate),
CR_MEMBER(useRelVel),
CR_MEMBER(useRotVel),
CR_MEMBER(drag),
CR_MEMBER(velVec),
CR_MEMBER(relVel),
CR_MEMBER(rot),
CR_MEMBER(rotVel),
CR_MEMBER(mins),
CR_MEMBER(maxs),
CR_MEMBER(trackSlope),
CR_MEMBER(trackGround),
CR_MEMBER(groundOffset),
CR_MEMBER(gravityFactor),
CR_MEMBER(windFactor),
CR_MEMBER(noBlocking), // copy of CSolidObject::PSTATE_BIT_BLOCKING
CR_MEMBER(gndStop),
CR_MEMBER(shotStop),
CR_MEMBER(slopeStop),
CR_MEMBER(collideStop),
CR_MEMBER(scriptNotify),
CR_RESERVED(64)
))
CScriptMoveType::CScriptMoveType(CUnit* owner):
AMoveType(owner),
tag(0),
extrapolate(true),
useRelVel(false),
useRotVel(false),
drag(0.0f),
velVec(ZeroVector),
relVel(ZeroVector),
rot(ZeroVector),
rotVel(ZeroVector),
mins(-1.0e9f, -1.0e9f, -1.0e9f),
maxs(+1.0e9f, +1.0e9f, +1.0e9f),
trackSlope(false),
trackGround(false),
groundOffset(0.0f),
gravityFactor(0.0f),
windFactor(0.0f),
noBlocking(false),
gndStop(false),
shotStop(false),
slopeStop(false),
collideStop(false),
scriptNotify(0)
{
useHeading = false; // use the transformation matrix instead of heading
oldPos = owner? owner->pos: ZeroVector;
oldSlowUpdatePos = oldPos;
}
CScriptMoveType::~CScriptMoveType()
{
// clean up if noBlocking was made true at
// some point during this script's lifetime
// and not reset
owner->UnBlock();
}
inline void CScriptMoveType::CalcDirections()
{
CMatrix44f matrix;
matrix.RotateY(-rot.y);
matrix.RotateX(-rot.x);
matrix.RotateZ(-rot.z);
owner->SetDirVectors(matrix);
owner->UpdateMidAndAimPos();
owner->SetHeadingFromDirection();
}
void CScriptMoveType::CheckNotify()
{
if (scriptNotify) {
if (eventHandler.MoveCtrlNotify(owner, scriptNotify)) {
// NOTE: deletes \<this\>
owner->DisableScriptMoveType();
} else {
scriptNotify = 0;
}
}
}
bool CScriptMoveType::Update()
{
if (useRotVel) {
rot += rotVel;
CalcDirections();
}
if (extrapolate) {
// NOTE: only gravitational acc. is allowed to build up velocity
// NOTE: strong wind plus low gravity can cause substantial drift
const float3 gravVec = UpVector * (mapInfo->map.gravity * gravityFactor);
const float3 windVec = (wind.GetCurrentWind() * windFactor);
const float3 unitVec = useRelVel?
(owner->frontdir * relVel.z) +
(owner->updir * relVel.y) +
(owner->rightdir * -relVel.x):
ZeroVector;
owner->Move(gravVec + velVec, true);
owner->Move(windVec, true);
owner->Move(unitVec, true);
// quadratic drag does not work well here
velVec += gravVec;
velVec *= (1.0f - drag);
owner->SetVelocityAndSpeed(velVec);
}
if (trackGround) {
const float gndMin = CGround::GetHeightReal(owner->pos.x, owner->pos.z) + groundOffset;
if (owner->pos.y <= gndMin) {
owner->Move(UpVector * (gndMin - owner->pos.y), true);
owner->speed.y = 0.0f;
if (gndStop) {
velVec = ZeroVector;
relVel = ZeroVector;
rotVel = ZeroVector;
scriptNotify = 1;
}
}
}
// positional clamps
CheckLimits();
if (trackSlope) {
owner->UpdateDirVectors(true);
owner->UpdateMidAndAimPos();
}
// don't need the rest if the pos hasn't changed
if (oldPos == owner->pos) {
CheckNotify();
return false;
}
oldPos = owner->pos;
if (!noBlocking) {
owner->Block();
}
CheckNotify();
return true;
}
void CScriptMoveType::CheckLimits()
{
if (owner->pos.x < mins.x) { owner->pos.x = mins.x; owner->speed.x = 0.0f; }
if (owner->pos.x > maxs.x) { owner->pos.x = maxs.x; owner->speed.x = 0.0f; }
if (owner->pos.y < mins.y) { owner->pos.y = mins.y; owner->speed.y = 0.0f; }
if (owner->pos.y > maxs.y) { owner->pos.y = maxs.y; owner->speed.y = 0.0f; }
if (owner->pos.z < mins.z) { owner->pos.z = mins.z; owner->speed.z = 0.0f; }
if (owner->pos.z > maxs.z) { owner->pos.z = maxs.z; owner->speed.z = 0.0f; }
owner->UpdateMidAndAimPos();
}
void CScriptMoveType::SetPhysics(const float3& _pos, const float3& _vel, const float3& _rot)
{
SetPosition(_pos);
SetVelocity(_vel);
SetRotation(_rot);
}
void CScriptMoveType::SetPosition(const float3& _pos) { owner->Move(_pos, false); }
void CScriptMoveType::SetVelocity(const float3& _vel) { owner->SetVelocityAndSpeed(velVec = _vel); }
void CScriptMoveType::SetRelativeVelocity(const float3& _relVel)
{
relVel = _relVel;
useRelVel = ((relVel.x != 0.0f) || (relVel.y != 0.0f) || (relVel.z != 0.0f));
}
void CScriptMoveType::SetRotation(const float3& _rot)
{
rot = _rot;
CalcDirections();
}
void CScriptMoveType::SetRotationVelocity(const float3& _rotVel)
{
rotVel = _rotVel;
useRotVel = ((rotVel.x != 0.0f) || (rotVel.y != 0.0f) || (rotVel.z != 0.0f));
}
void CScriptMoveType::SetHeading(short heading)
{
owner->heading = heading;
if (!trackSlope) {
owner->UpdateDirVectors(false);
owner->UpdateMidAndAimPos();
}
}
void CScriptMoveType::SetNoBlocking(bool state)
{
// if false, forces blocking-map updates
noBlocking = state;
if (noBlocking) {
owner->UnBlock();
} else {
owner->Block();
}
}
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