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#include <cassert>
#include <ctime>
#include <vector>
#include "IncCREG.h"
#include "IncExternAI.h"
#include "IncGlobalAI.h"
#include "KAIK.h"
extern CKAIK* KAIKStateExt;
CR_BIND(CDGunController, (NULL))
CR_REG_METADATA(CDGunController, (
CR_MEMBER(ai),
CR_MEMBER(state),
CR_MEMBER(commanderID),
CR_RESERVED(16),
CR_POSTLOAD(PostLoad)
))
CR_BIND(ControllerState, )
CR_REG_METADATA(ControllerState, (
CR_MEMBER(inited),
CR_MEMBER(dgunOrderFrame),
CR_MEMBER(reclaimOrderFrame),
CR_MEMBER(captureOrderFrame),
CR_MEMBER(targetSelectionFrame),
CR_MEMBER(targetID),
CR_MEMBER(oldTargetPos),
CR_RESERVED(16)
))
CR_BIND(CDGunControllerHandler, (NULL))
CR_REG_METADATA(CDGunControllerHandler, (
CR_MEMBER(ai),
CR_MEMBER(controllers),
CR_POSTLOAD(PostLoad)
))
CDGunController::CDGunController(AIClasses* aic) {
ai = aic;
srand((unsigned) time(0));
}
void CDGunController::PostLoad() {
ai = KAIKStateExt->GetAI();
}
void CDGunController::Init(int unitID) {
commanderID = unitID;
commanderUD = ai->cb->GetUnitDef(unitID);
commanderWD = NULL;
state.inited = true;
// set the commander to hold fire (we need this since
// FAW and RF interfere with dgun and reclaim orders)
ai->GetUnit(commanderID)->SetFireState(0);
std::vector<UnitDef::UnitDefWeapon>::const_iterator i = commanderUD->weapons.begin();
for (; i != commanderUD->weapons.end(); i++) {
if (i->def->type == "DGun") {
commanderWD = i->def;
break;
}
}
assert(commanderWD != NULL);
}
void CDGunController::HandleEnemyDestroyed(int attackerID, int targetID) {
// if we were dgunning or reclaiming this unit and it died
// (if an enemy unit is reclaimed, given attackerID is 0)
if (attackerID == 0 || state.targetID == targetID) {
// hack to avoid wiggle deadlocks
Stop();
state.Reset(0, true);
}
}
// problems: giving reclaim order on moving target causes commander
// to walk (messing up subsequent dgun order if target still moving)
// and does not take commander torso rotation time into account
//
void CDGunController::TrackAttackTarget(unsigned int currentFrame) {
if (currentFrame - state.targetSelectionFrame == 5) {
// five sim-frames have passed since selecting target, attack
const UnitDef* udef = ai->cb->GetUnitDef(state.targetID);
const float3 curTargetPos = ai->cb->GetUnitPos(state.targetID); // current target position
const float3 commanderPos = ai->cb->GetUnitPos(commanderID); // current commander position
const float3 targetDif = (curTargetPos - commanderPos);
const float targetDist = targetDif.Length(); // distance to target
const float3 targetVel = (curTargetPos - state.oldTargetPos);
float3 targetMoveDir = targetVel;
float targetMoveSpeed = 0.0f;
if (targetVel != ZeroVector) {
targetMoveSpeed = targetVel.Length() / 5.0f; // target speed per sim-frame during tracking interval
targetMoveDir = targetVel / (targetMoveSpeed * 5.0f); // target direction of movement
}
const float dgunDelay = targetDist / commanderWD->projectilespeed; // sim-frames needed for dgun to reach target position
const float3 leadPos = targetMoveDir * (targetMoveSpeed * dgunDelay);
const float3 dgunPos = curTargetPos + leadPos; // position where target will be in <dgunDelay> frames
const float maxRange = ai->cb->GetUnitMaxRange(commanderID);
bool haveClearShot = true;
AIHCTraceRay rayData;
float rayLen = maxRange * 1.1f;
float3 rayPos = commanderPos;
//float3 rayDir = targetDif / targetDist;
// rayDir.y = 0.0f;
while (haveClearShot && (rayLen >= 1.0f)) {
rayData.rayPos = rayPos;
rayData.rayDir = targetDif / targetDist;
rayData.rayLen = rayLen;
rayData.srcUID = commanderID;
rayData.hitUID = -1;
rayData.flags = 0;
// modifies hitUID and rayLen
ai->ccb->HandleCommand(AIHCTraceRayId, &rayData);
// note: even if hitUnitID is -1, we can still end up destroying
// our own units because dgun projectiles keep hugging the ground
// rather than being absorbed by it on impact (which is assumed by
// the trace)
if (rayData.hitUID != -1) {
if (ai->cb->GetUnitAllyTeam(rayData.hitUID) == ai->cb->GetMyAllyTeam()) {
// hitUID is an allied unit
haveClearShot = false;
} else {
// hitUID is an enemy unit
rayPos = ai->ccb->GetUnitPos(rayData.hitUID);
}
}
// make sure we always terminate
rayLen -= 1.0f;
}
// multiply by 0.9 to ensure commander does not have to walk
if ((commanderPos - dgunPos).Length() < maxRange * 0.9f) {
bool canDGun =
(ai->cb->GetEnergy() >= DGUN_MIN_ENERGY_LEVEL)
&& haveClearShot
&& (udef != NULL && !udef->weapons.empty());
if (canDGun) {
IssueOrder(dgunPos, CMD_DGUN, 0);
} else {
bool bDanger = ai->thm->ThreatAtThisPoint(commanderPos/*curTargetPos*/) > ai->thm->GetAverageThreat();
if (bDanger) {
state.Reset(currentFrame, true);
} else {
if (ai->cb->GetUnitHealth(state.targetID) < ai->cb->GetUnitMaxHealth(state.targetID) * 0.5f) {
IssueOrder(state.targetID, CMD_RECLAIM, 0);
} else {
IssueOrder(state.targetID, CMD_CAPTURE, 0);
}
}
}
} else {
state.Reset(currentFrame, true);
}
}
state.Reset(currentFrame, false);
}
void CDGunController::SelectTarget(unsigned int currentFrame) {
float3 commanderPos = ai->cb->GetUnitPos(commanderID);
// if our commander is dead, its position will be (0, 0, 0)
if (commanderPos.x <= 0.0f && commanderPos.z <= 0.0f) {
return;
}
// get all units within immediate (non-walking) dgun range
const float maxRange = ai->cb->GetUnitMaxRange(commanderID);
const int numUnits = ai->cb->GetEnemyUnits(&ai->unitIDs[0], commanderPos, maxRange * 0.9f);
for (int i = 0; i < numUnits; i++) {
// if enemy unit with valid ID found in array
if (ai->unitIDs[i] > 0) {
// check if unit still alive (needed since when UnitDestroyed()
// triggered GetEnemyUnits() is not immediately updated as well)
if (ai->cb->GetUnitHealth(ai->unitIDs[i]) > 0.0f) {
const UnitDef* attackerDef = ai->cb->GetUnitDef(ai->unitIDs[i]);
// don't directly pop enemy commanders
if (attackerDef && !attackerDef->isCommander && !attackerDef->canDGun) {
state.targetSelectionFrame = currentFrame;
state.targetID = ai->unitIDs[i];
state.oldTargetPos = ai->cb->GetUnitPos(ai->unitIDs[i]);
return;
}
}
}
}
}
void CDGunController::Update(unsigned int currentFrame) {
if (!state.inited)
return;
if (state.targetID != -1) {
// we selected a target, track and attack it
TrackAttackTarget(currentFrame);
} else {
// we have no target yet, pick one
SelectTarget(currentFrame);
}
}
void CDGunController::Stop(void) const {
Command c(CMD_STOP); ai->ct->GiveOrder(commanderID, &c);
}
void CDGunController::IssueOrder(const float3& pos, int orderType, int keyMod) {
Command c(orderType);
c.SetOpts(keyMod);
c.PushPos(pos);
ai->ct->GiveOrder(commanderID, &c);
if (orderType == CMD_DGUN ) { state.dgunOrderFrame = ai->cb->GetCurrentFrame(); }
if (orderType == CMD_RECLAIM) { state.reclaimOrderFrame = ai->cb->GetCurrentFrame(); }
if (orderType == CMD_CAPTURE) { state.captureOrderFrame = ai->cb->GetCurrentFrame(); }
}
void CDGunController::IssueOrder(int target, int orderType, int keyMod) {
Command c(orderType);
c.SetOpts(keyMod);
c.PushParam(target);
ai->ct->GiveOrder(commanderID, &c);
if (orderType == CMD_DGUN ) { state.dgunOrderFrame = ai->cb->GetCurrentFrame(); }
if (orderType == CMD_RECLAIM) { state.reclaimOrderFrame = ai->cb->GetCurrentFrame(); }
if (orderType == CMD_CAPTURE) { state.captureOrderFrame = ai->cb->GetCurrentFrame(); }
}
bool CDGunController::IsBusy(void) const {
return (state.dgunOrderFrame > 0 || state.reclaimOrderFrame > 0 || state.captureOrderFrame > 0);
}
void CDGunControllerHandler::PostLoad() {
ai = KAIKStateExt->GetAI();
}
bool CDGunControllerHandler::AddController(int unitID) {
if (controllers.find(unitID) == controllers.end()) {
controllers[unitID] = new CDGunController(ai);
controllers[unitID]->Init(unitID);
return true;
}
return false;
}
bool CDGunControllerHandler::DelController(int unitID) {
std::map<int, CDGunController*>::iterator it = controllers.find(unitID);
if (it != controllers.end()) {
delete it->second;
controllers.erase(it);
return true;
}
return false;
}
CDGunController* CDGunControllerHandler::GetController(int unitID) const {
std::map<int, CDGunController*>::const_iterator it = controllers.find(unitID);
if (it == controllers.end()) {
return NULL;
}
return it->second;
}
void CDGunControllerHandler::NotifyEnemyDestroyed(int enemy, int attacker) {
std::map<int, CDGunController*>::iterator conIt;
for (conIt = controllers.begin(); conIt != controllers.end(); conIt++) {
conIt->second->HandleEnemyDestroyed(attacker, enemy);
}
}
void CDGunControllerHandler::Update(int frame) {
std::list<int> deadCons;
std::list<int>::iterator deadConIt;
std::map<int, CDGunController*>::iterator conIt;
for (conIt = controllers.begin(); conIt != controllers.end(); conIt++) {
const UnitDef* udef = ai->cb->GetUnitDef(conIt->first);
if (udef == NULL || !udef->canDGun) {
deadCons.push_back(conIt->first);
} else {
conIt->second->Update(frame);
}
}
for (deadConIt = deadCons.begin(); deadConIt != deadCons.end(); deadConIt++) {
// probably should tie this into [Notify]UnitDestroyed()
DelController(*deadConIt);
}
}
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