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SelectedUnitsAI.cpp
707 lines (508 loc) · 18.5 KB
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SelectedUnitsAI.cpp
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/* This file is part of the Spring engine (GPL v2 or later), see LICENSE.html */
#include "SelectedUnitsAI.h"
#include "SelectedUnitsHandler.h"
#include "GlobalUnsynced.h"
#include "WaitCommandsAI.h"
#include "Game/Players/Player.h"
#include "Game/Players/PlayerHandler.h"
#include "Map/Ground.h"
#include "Sim/Misc/GlobalConstants.h"
#include "Sim/Misc/QuadField.h"
#include "Sim/Misc/TeamHandler.h"
#include "Sim/MoveTypes/MoveType.h"
#include "Sim/Units/UnitHandler.h"
#include "Sim/Units/CommandAI/CommandAI.h"
#include "Sim/Units/Unit.h"
#include "Sim/Units/UnitDef.h"
#include "Net/Protocol/NetProtocol.h"
static constexpr int CMDPARAM_MOVE_X = 0;
static constexpr int CMDPARAM_MOVE_Y = 1;
static constexpr int CMDPARAM_MOVE_Z = 2;
typedef std::vector<int> TGroupVect;
typedef std::pair<float, TGroupVect> TGroupPair;
static const auto ugPairComp = [](const TGroupPair& a, const TGroupPair& b) { return (a.first < b.first); };
static const auto idPairComp = [](const std::pair<float, int>& a, const std::pair<float, int>& b) { return (a.first < b.first); };
CSelectedUnitsHandlerAI selectedUnitsAI;
inline void CSelectedUnitsHandlerAI::SetUnitWantedMaxSpeedNet(CUnit* unit)
{
AMoveType* mt = unit->moveType;
if (!mt->UseWantedSpeed(false))
return;
// this sets the WANTED maximum speed of <unit>
// equal to its current ACTUAL maximum (not the
// UnitDef maximum, which can be overridden by
// scripts)
mt->SetWantedMaxSpeed(mt->GetMaxSpeed());
}
inline void CSelectedUnitsHandlerAI::SetUnitGroupWantedMaxSpeedNet(CUnit* unit)
{
AMoveType* mt = unit->moveType;
if (!mt->UseWantedSpeed(true))
return;
// sets the wanted speed of this unit to that of the
// group's current-slowest member (groupMinMaxSpeed
// is derived from GetMaxSpeed, not GetMaxSpeedDef)
mt->SetWantedMaxSpeed(groupMinMaxSpeed);
}
static inline bool MayRequireSetMaxSpeedCommand(const Command& c)
{
switch (c.GetID()) {
// this is not a complete list
case CMD_STOP:
case CMD_WAIT:
case CMD_SELFD:
case CMD_FIRE_STATE:
case CMD_MOVE_STATE:
case CMD_ONOFF:
case CMD_REPEAT: {
return false;
}
}
return true;
}
void CSelectedUnitsHandlerAI::GiveCommandNet(Command& c, int player)
{
const std::vector<int>& netSelected = selectedUnitsHandler.netSelected[player];
const int nbrOfSelectedUnits = netSelected.size();
const int cmdID = c.GetID();
// no units to command
if (nbrOfSelectedUnits < 1)
return;
if ((cmdID == CMD_ATTACK) && ((c.GetNumParams() == 6) || ((c.GetNumParams() == 4) && (c.GetParam(3) > 0.001f)))) {
SelectAttackNet(c, player);
return;
}
if (nbrOfSelectedUnits == 1) {
// a single unit selected
CUnit* unit = unitHandler.GetUnit(*netSelected.begin());
if (unit == nullptr)
return;
// set this first s.t. Lua can freely override it
if (MayRequireSetMaxSpeedCommand(c))
SetUnitWantedMaxSpeedNet(unit);
unit->commandAI->GiveCommand(c, true);
if (cmdID == CMD_WAIT && player == gu->myPlayerNum)
waitCommandsAI.AcknowledgeCommand(c);
return;
}
// User Move Front Command:
//
// CTRL: Group Front/Speed command
//
// User Move Command:
//
// ALT: Group Front command
// ALT+CTRL: Group Front/Speed command
// CTRL: Group Locked/Speed command (maintain relative positions)
//
// User Patrol and Fight Commands:
//
// CTRL: Group Locked/Speed command (maintain relative positions)
// ALT+CTRL: Group Locked command (maintain relative positions)
//
if (((cmdID == CMD_MOVE) || (cmdID == CMD_FIGHT)) && (c.GetNumParams() == 6)) {
const bool groupSpeed = !!(c.GetOpts() & CONTROL_KEY);
const bool queuedOrder = !!(c.GetOpts() & SHIFT_KEY);
CalculateGroupData(player, queuedOrder);
for (const int unitID: netSelected) {
CUnit* unit = unitHandler.GetUnit(unitID);
if (unit == nullptr)
continue;
if (groupSpeed) {
SetUnitGroupWantedMaxSpeedNet(unit);
} else {
SetUnitWantedMaxSpeedNet(unit);
}
}
MakeFormationFrontOrder(&c, player);
return;
}
if ((cmdID == CMD_MOVE) && (c.GetOpts() & ALT_KEY)) {
const bool groupSpeed = !!(c.GetOpts() & CONTROL_KEY);
const bool queuedOrder = !!(c.GetOpts() & SHIFT_KEY);
CalculateGroupData(player, queuedOrder);
for (const int unitID: netSelected) {
CUnit* unit = unitHandler.GetUnit(unitID);
if (unit == nullptr)
continue;
if (groupSpeed) {
SetUnitGroupWantedMaxSpeedNet(unit);
} else {
SetUnitWantedMaxSpeedNet(unit);
}
}
// use the vector from the middle of group to new pos as forward dir
const float3 pos = c.GetPos(0);
const float3 frontDir = ((pos - groupCenterCoor) * XZVector).ANormalize();
const float3 sideDir = frontDir.cross(UpVector);
// calculate so that the units form in an aproximate square
const float length = 100.0f + (math::sqrt((float)nbrOfSelectedUnits) * 32.0f);
// push back some extra params so it confer with a front move
c.PushPos(pos + (sideDir * length));
MakeFormationFrontOrder(&c, player);
return;
}
if ((c.GetOpts() & CONTROL_KEY) && ((cmdID == CMD_MOVE) || (cmdID == CMD_PATROL) || (cmdID == CMD_FIGHT))) {
const bool groupSpeed = !(c.GetOpts() & ALT_KEY); // one '!'
const bool queuedOrder = !!(c.GetOpts() & SHIFT_KEY);
CalculateGroupData(player, queuedOrder);
for (const int unitID: netSelected) {
CUnit* unit = unitHandler.GetUnit(unitID);
if (unit == nullptr)
continue;
// modify the destination relative to the center of the group
Command uc = c;
const float3 midPos = (queuedOrder? LastQueuePosition(unit): float3(unit->midPos));
const float3 difPos = midPos - groupCenterCoor;
uc.SetParam(CMDPARAM_MOVE_X, uc.GetParam(CMDPARAM_MOVE_X) + difPos.x);
uc.SetParam(CMDPARAM_MOVE_Y, uc.GetParam(CMDPARAM_MOVE_Y) + difPos.y);
uc.SetParam(CMDPARAM_MOVE_Z, uc.GetParam(CMDPARAM_MOVE_Z) + difPos.z);
if (groupSpeed) {
SetUnitGroupWantedMaxSpeedNet(unit);
} else {
SetUnitWantedMaxSpeedNet(unit);
}
unit->commandAI->GiveCommand(uc, true);
}
return;
}
{
// command without special group modifiers
for (const int unitID: netSelected) {
CUnit* unit = unitHandler.GetUnit(unitID);
if (unit == nullptr)
continue;
if (MayRequireSetMaxSpeedCommand(c))
SetUnitWantedMaxSpeedNet(unit);
unit->commandAI->GiveCommand(c, true);
}
if (cmdID != CMD_WAIT)
return;
if (player != gu->myPlayerNum)
return;
waitCommandsAI.AcknowledgeCommand(c);
}
}
//
// Calculate the outer limits and the center of the group coordinates.
//
void CSelectedUnitsHandlerAI::CalculateGroupData(int player, bool queueing) {
float3 sumCoor;
float3 minCoor = OnesVector * 100000.0f;
float3 maxCoor = -OnesVector * 100000.0f;
float3 mobileSumCoor;
int mobileUnits = 0;
groupSumLength = 0.0f;
groupMinMaxSpeed = 1e9f;
const std::vector<int>& playerUnitIDs = selectedUnitsHandler.netSelected[player];
// find highest, lowest and weighted central positional coordinates among selected units
for (const int unitID: playerUnitIDs) {
const CUnit* unit = unitHandler.GetUnit(unitID);
if (unit == nullptr)
continue;
groupSumLength += ((unit->unitDef->xsize + unit->unitDef->zsize) * 0.5f);
const float3 unitPos = (queueing? LastQueuePosition(unit): float3(unit->midPos));
minCoor = float3::min(minCoor, unitPos);
maxCoor = float3::max(maxCoor, unitPos);
sumCoor += unitPos;
if (!unit->moveType->UseWantedSpeed(false))
continue;
mobileUnits++;
mobileSumCoor += unitPos;
groupMinMaxSpeed = std::min(groupMinMaxSpeed, unit->moveType->GetMaxSpeed());
}
groupAvgLength = groupSumLength / playerUnitIDs.size();
// weighted center
if (mobileUnits > 0)
groupCenterCoor = mobileSumCoor / mobileUnits;
else
groupCenterCoor = sumCoor / playerUnitIDs.size();
}
void CSelectedUnitsHandlerAI::MakeFormationFrontOrder(Command* c, int player)
{
// called when releasing the mouse; accompanies GuiHandler::DrawFormationFrontOrder
formationCenterPos = c->GetPos(0);
formationRightPos = c->GetPos(3);
// in "front" coordinates (rotated to real, moved by formationRightPos)
float3 nextPos;
const std::vector<int>& playerUnitIDs = selectedUnitsHandler.netSelected[player];
if (formationCenterPos.distance(formationRightPos) < playerUnitIDs.size() + 33) {
// if the front is not long enough, treat as a standard move
for (const auto unitID: playerUnitIDs) {
CUnit* unit = unitHandler.GetUnit(unitID);
if (unit == nullptr)
continue;
unit->commandAI->GiveCommand(*c, false);
}
return;
}
groupFrontLength = formationCenterPos.distance(formationRightPos) * 2.0f;
groupAddedSpace = 0.0f;
if (groupFrontLength > (groupSumLength * 2.0f * SQUARE_SIZE))
groupAddedSpace = (groupFrontLength - (groupSumLength * 2.0f * SQUARE_SIZE)) / (playerUnitIDs.size() - 1);
#if 0
formationNumColumns = std::max(1, int(groupFrontLength / groupColumnDist));
#endif
const float3 formationSideDir = (formationCenterPos - formationRightPos) * XZVector + (UpVector * groupFrontLength * 0.5f);
sortedUnitGroups.clear();
frontMoveCommands.clear();
CreateUnitOrder(sortedUnitPairs, player);
for (size_t k = 0; k < sortedUnitPairs.size(); ) {
bool newFormationLine = false;
// convert flat vector of <priority, unitID> pairs
// to a vector of <priority, vector<unitID>> pairs
const auto& suPair = sortedUnitPairs[k];
const auto suGroupPair = TGroupPair{suPair.first, {}};
const auto suGroupIter = std::lower_bound(sortedUnitGroups.begin(), sortedUnitGroups.end(), suGroupPair, ugPairComp);
if (suGroupIter == sortedUnitGroups.end() || suGroupIter->first != suPair.first) {
sortedUnitGroups.emplace_back(suPair.first, TGroupVect{suPair.second});
// swap into position
for (size_t i = sortedUnitGroups.size() - 1; i > 0; i--) {
if (ugPairComp(sortedUnitGroups[i - 1], sortedUnitGroups[i]))
break;
std::swap(sortedUnitGroups[i - 1], sortedUnitGroups[i]);
}
} else {
suGroupIter->second.push_back(suPair.second);
}
nextPos = MoveToPos(nextPos, formationSideDir, unitHandler.GetUnit(suPair.second), c, &frontMoveCommands, &newFormationLine);
if ((++k) < sortedUnitPairs.size()) {
MoveToPos(nextPos, formationSideDir, unitHandler.GetUnit(suPair.second), c, nullptr, &newFormationLine);
if (!newFormationLine)
continue;
}
mixedUnitIDs.clear();
mixedUnitIDs.reserve(frontMoveCommands.size());
mixedGroupSizes.clear();
mixedGroupSizes.resize(sortedUnitGroups.size(), 0);
// mix units in each row to avoid weak flanks consisting solely of e.g. artillery
for (size_t j = 0; j < frontMoveCommands.size(); j++) {
size_t bestGroupNum = 0;
float bestGroupVal = 1.0f;
for (size_t groupNum = 0; groupNum < sortedUnitGroups.size(); ++groupNum) {
const size_t maxGroupSize = sortedUnitGroups[groupNum].second.size();
const size_t curGroupSize = mixedGroupSizes[groupNum];
if (curGroupSize >= maxGroupSize)
continue;
const float groupVal = (0.5f + curGroupSize) / (1.0f * maxGroupSize);
if (groupVal >= bestGroupVal)
continue;
bestGroupVal = groupVal;
bestGroupNum = groupNum;
}
// for each processed command, increase the count by 1 s.t.
// (at most) groupSize units are shuffled around per group
const size_t unitIndex = mixedGroupSizes[bestGroupNum]++;
const auto& groupPair = sortedUnitGroups[bestGroupNum];
const auto& groupUnitIDs = groupPair.second;
mixedUnitIDs.push_back(groupUnitIDs[unitIndex]);
}
for (size_t i = 0; i < frontMoveCommands.size(); i++) {
CUnit* unit = unitHandler.GetUnit(mixedUnitIDs[i]);
CCommandAI* cai = unit->commandAI;
cai->GiveCommand(frontMoveCommands[i].second, false);
}
frontMoveCommands.clear();
sortedUnitGroups.clear();
}
}
void CSelectedUnitsHandlerAI::CreateUnitOrder(std::vector< std::pair<float, int> >& out, int player)
{
const std::vector<int>& playerUnitIDs = selectedUnitsHandler.netSelected[player];
out.clear();
out.reserve(playerUnitIDs.size());
for (const int unitID: playerUnitIDs) {
const CUnit* unit = unitHandler.GetUnit(unitID);
if (unit == nullptr)
continue;
const UnitDef* ud = unit->unitDef;
// give weaponless units a long range to make them go to the back
const float range = (unit->maxRange < 1.0f)? 2000: unit->maxRange;
const float value = ((ud->metal * 60) + ud->energy) / ud->health * range;
out.emplace_back(value, unitID);
}
std::stable_sort(out.begin(), out.end(), idPairComp);
}
float3 CSelectedUnitsHandlerAI::MoveToPos(
float3 nextCornerPos,
float3 formationDir,
const CUnit* unit,
Command* command,
std::vector<std::pair<int, Command> >* frontcmds,
bool* newline
) {
#if 0
const int rowNum = posNum / formationNumColumns;
const int colNum = posNum - rowNum * formationNumColumns;
const float side = (0.25f + colNum * 0.5f) * groupColumnDist * ((colNum & 1)? -1: 1);
#endif
if ((*newline = ((nextCornerPos.x - groupAddedSpace) > groupFrontLength))) {
nextCornerPos.x = 0.0f;
nextCornerPos.z -= (groupAvgLength * 2.0f * SQUARE_SIZE);
}
if (frontcmds == nullptr)
return nextCornerPos;
if (unit == nullptr)
return nextCornerPos;
const int unitSize = (unit->unitDef->xsize + unit->unitDef->zsize) / 2;
float3 retPos(nextCornerPos.x + unitSize * SQUARE_SIZE * 2 + groupAddedSpace, 0, nextCornerPos.z);
float3 movePos(nextCornerPos.x + unitSize * SQUARE_SIZE + groupAddedSpace, 0, nextCornerPos.z); // posit in coordinates of "front"
if (nextCornerPos.x == 0.0f) {
movePos.x = unitSize * SQUARE_SIZE;
retPos.x -= groupAddedSpace;
}
float3 pos;
pos.x = formationRightPos.x + (movePos.x * (formationDir.x / formationDir.y)) - (movePos.z * (formationDir.z / formationDir.y));
pos.z = formationRightPos.z + (movePos.x * (formationDir.z / formationDir.y)) + (movePos.z * (formationDir.x / formationDir.y));
pos.y = CGround::GetHeightAboveWater(pos.x, pos.z);
frontcmds->emplace_back(unit->id, Command(command->GetID(), command->GetOpts(), pos));
return retPos;
}
void CSelectedUnitsHandlerAI::SelectAttackNet(const Command& cmd, int player)
{
// reuse for sorting targets, no overlap with MakeFormationFrontOrder
sortedUnitPairs.clear();
targetUnitIDs.clear();
if (cmd.GetNumParams() == 4) {
SelectCircleUnits(cmd.GetPos(0), cmd.GetParam(3), player, targetUnitIDs);
} else {
SelectRectangleUnits(cmd.GetPos(0), cmd.GetPos(3), player, targetUnitIDs);
}
if (targetUnitIDs.empty())
return;
const bool queueing = !!(cmd.GetOpts() & SHIFT_KEY);
const std::vector<int>& selected = selectedUnitsHandler.netSelected[player];
const unsigned int targetsCount = targetUnitIDs.size();
const unsigned int selectedCount = selected.size();
unsigned int realCount = 0;
if (selectedCount == 0)
return;
Command attackCmd(CMD_ATTACK, cmd.GetOpts(), 0.0f);
// delete the attack commands and bail for CONTROL_KEY
if (cmd.GetOpts() & CONTROL_KEY) {
attackCmd.SetOpts(attackCmd.GetOpts() | SHIFT_KEY);
for (unsigned int s = 0; s < selectedCount; s++) {
const CUnit* unit = unitHandler.GetUnit(selected[s]);
if (unit == nullptr)
continue;
CCommandAI* commandAI = unit->commandAI;
for (unsigned int t = 0; t < targetsCount; t++) {
attackCmd.SetParam(0, targetUnitIDs[t]);
if (!commandAI->WillCancelQueued(attackCmd))
continue;
commandAI->GiveCommand(attackCmd, true);
}
}
return;
}
// get the group center
float3 midPos;
for (unsigned int s = 0; s < selectedCount; s++) {
CUnit* unit = unitHandler.GetUnit(selected[s]);
if (unit == nullptr)
continue;
midPos += (queueing? LastQueuePosition(unit): float3(unit->midPos));
realCount++;
}
if (realCount == 0)
return;
midPos /= realCount;
// sort the targets
for (unsigned int t = 0; t < targetsCount; t++) {
const CUnit* unit = unitHandler.GetUnit(targetUnitIDs[t]);
const float3 unitPos = float3(unit->midPos);
sortedUnitPairs.emplace_back((unitPos - midPos).SqLength2D(), targetUnitIDs[t]);
}
std::stable_sort(sortedUnitPairs.begin(), sortedUnitPairs.end(), idPairComp);
// give the commands; clear queueing-flag for the first
for (unsigned int s = 0; s < selectedCount; s++) {
if (!queueing)
attackCmd.SetOpts(attackCmd.GetOpts() & ~SHIFT_KEY);
CUnit* unit = unitHandler.GetUnit(selected[s]);
if (unit == nullptr)
continue;
CCommandAI* commandAI = unit->commandAI;
for (unsigned t = 0; t < targetsCount; t++) {
attackCmd.SetParam(0, sortedUnitPairs[t].second);
if (queueing && commandAI->WillCancelQueued(attackCmd))
continue;
commandAI->GiveCommand(attackCmd, true);
SetUnitWantedMaxSpeedNet(unit);
// following commands are always queued
attackCmd.SetOpts(attackCmd.GetOpts() | SHIFT_KEY);
}
}
}
void CSelectedUnitsHandlerAI::SelectCircleUnits(
const float3& pos,
float radius,
int player,
std::vector<int>& units
) {
units.clear();
if (!playerHandler.IsValidPlayer(player))
return;
const CPlayer* p = playerHandler.Player(player);
if (p == nullptr)
return;
QuadFieldQuery qfQuery;
quadField.GetUnitsExact(qfQuery, pos, radius, false);
const float radiusSqr = radius * radius;
const unsigned int count = qfQuery.units->size();
const int allyTeam = teamHandler.AllyTeam(p->team);
units.reserve(count);
for (unsigned int i = 0; i < count; i++) {
CUnit* unit = (*qfQuery.units)[i];
if (unit == nullptr)
continue;
if (unit->allyteam == allyTeam)
continue;
if (!(unit->losStatus[allyTeam] & (LOS_INLOS | LOS_INRADAR)))
continue;
const float dx = (pos.x - unit->midPos.x);
const float dz = (pos.z - unit->midPos.z);
if (((dx * dx) + (dz * dz)) > radiusSqr)
continue;
units.push_back(unit->id);
}
}
void CSelectedUnitsHandlerAI::SelectRectangleUnits(
const float3& pos0,
const float3& pos1,
int player,
std::vector<int>& units
) {
units.clear();
if (!playerHandler.IsValidPlayer(player))
return;
const CPlayer* p = playerHandler.Player(player);
if (p == nullptr)
return;
const float3 mins(std::min(pos0.x, pos1.x), 0.0f, std::min(pos0.z, pos1.z));
const float3 maxs(std::max(pos0.x, pos1.x), 0.0f, std::max(pos0.z, pos1.z));
QuadFieldQuery qfQuery;
quadField.GetUnitsExact(qfQuery, mins, maxs);
const unsigned int count = qfQuery.units->size();
const int allyTeam = teamHandler.AllyTeam(p->team);
units.reserve(count);
for (unsigned int i = 0; i < count; i++) {
const CUnit* unit = (*qfQuery.units)[i];
if (unit == nullptr)
continue;
if (unit->allyteam == allyTeam)
continue;
if (!(unit->losStatus[allyTeam] & (LOS_INLOS | LOS_INRADAR)))
continue;
units.push_back(unit->id);
}
}
float3 CSelectedUnitsHandlerAI::LastQueuePosition(const CUnit* unit)
{
const CCommandQueue& queue = unit->commandAI->commandQue;
for (auto it = queue.rbegin(); it != queue.rend(); ++it) {
const Command& cmd = *it;
if (cmd.GetNumParams() >= 3)
return cmd.GetPos(0);
}
return unit->midPos;
}