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/* Starshatter: The Open Source Project
Copyright (c) 2021-2022, Starshatter: The Open Source Project Contributors
Copyright (c) 2011-2012, Starshatter OpenSource Distribution Contributors
Copyright (c) 1997-2006, Destroyer Studios LLC.
AUTHOR: John DiCamillo
OVERVIEW
========
CampaignPlanMission generates missions and mission
info for the player's combat group as part of a
dynamic campaign.
*/
#include "CampaignPlanMission.h"
#include "CampaignMissionRequest.h"
#include "CampaignMissionFighter.h"
#include "CampaignMissionStarship.h"
#include "Campaign.h"
#include "Combatant.h"
#include "CombatAction.h"
#include "CombatAssignment.h"
#include "CombatGroup.h"
#include "CombatUnit.h"
#include "CombatZone.h"
#include "Mission.h"
#include "StarSystem.h"
#include "Random.h"
// +--------------------------------------------------------------------+
void
CampaignPlanMission::ExecFrame()
{
if (campaign && campaign->IsActive()) {
player_group = campaign->GetPlayerGroup();
if (!player_group) return;
int missionCount = campaign->GetMissionList().size();
if (missionCount > 0) {
// starships only get one mission to pick from:
if (player_group->IsStarshipGroup())
return;
// fighters get a maximum of five missions:
if (missionCount >= 5)
return;
// otherwise, once every few seconds is plenty:
if (Campaign::Stardate() - exec_time < 1)
return;
}
SelectStartTime();
if (player_group->IsFighterGroup()) {
slot++;
if (slot > 2) slot = 0;
CampaignMissionRequest* request = PlanFighterMission();
CampaignMissionFighter generator(campaign);
generator.CreateMission(request);
delete request;
}
else if (player_group->IsStarshipGroup()) {
// starships should always check for campaign and strategic missions
slot = 0;
CampaignMissionRequest* request = PlanStarshipMission();
CampaignMissionStarship generator(campaign);
generator.CreateMission(request);
delete request;
}
exec_time = Campaign::Stardate();
}
}
// +--------------------------------------------------------------------+
void
CampaignPlanMission::SelectStartTime()
{
const int HOUR = 3600; // 60 minutes
const int MISSION_DELAY = 1800; // 30 minutes
double base_time = 0;
List<MissionInfo>& info_list = campaign->GetMissionList();
if (info_list.size() > 0) {
MissionInfo* info = info_list[info_list.size()-1];
base_time = info->start;
}
if (base_time == 0)
base_time = campaign->GetTime() + MISSION_DELAY;
start = (int) base_time + MISSION_DELAY;
start -= start % MISSION_DELAY;
}
// +--------------------------------------------------------------------+
CampaignMissionRequest*
CampaignPlanMission::PlanStarshipMission()
{
CampaignMissionRequest* request = 0;
if (!request) request = PlanCampaignMission();
if (!request) request = PlanStrategicMission();
if (!request) request = PlanRandomStarshipMission();
return request;
}
// +--------------------------------------------------------------------+
CampaignMissionRequest*
CampaignPlanMission::PlanFighterMission()
{
CampaignMissionRequest* request = 0;
if (!request) request = PlanCampaignMission();
if (!request) request = PlanStrategicMission();
if (!request) request = PlanRandomFighterMission();
return request;
}
// +--------------------------------------------------------------------+
CampaignMissionRequest*
CampaignPlanMission::PlanCampaignMission()
{
CampaignMissionRequest* request = 0;
ListIter<CombatAction> iter = campaign->GetActions();
while (++iter && !request) {
CombatAction* action = iter.value();
if (action->Type() != CombatAction::MISSION_TEMPLATE)
continue;
if (action->IsAvailable()) {
// only fire each action once every two hours:
if (action->ExecTime() > 0 && campaign->GetTime() - action->ExecTime() < 7200)
continue;
CombatGroup* g = campaign->FindGroup(action->GetIFF(),
action->AssetType(),
action->AssetId());
if (g && (g == player_group ||
(player_group->Type() == CombatGroup::WING &&
player_group->FindGroup(g->Type(), g->GetID())))) {
request = new
CampaignMissionRequest(campaign,
action->Subtype(),
start,
g);
if (request) {
request->SetOpposingType(action->OpposingType());
request->SetScript(action->GetText());
}
action->FireAction();
}
}
}
return request;
}
// +--------------------------------------------------------------------+
CampaignMissionRequest*
CampaignPlanMission::PlanStrategicMission()
{
CampaignMissionRequest* request = 0;
if (slot > 1)
return request;
// build list of assignments:
List<CombatAssignment> assignments;
assignments.append(player_group->GetAssignments());
if (player_group->Type() == CombatGroup::WING) {
ListIter<CombatGroup> iter = player_group->GetComponents();
while (++iter) {
CombatGroup* g = iter.value();
assignments.append(g->GetAssignments());
}
}
// pick next assignment as basis for mission:
static int assignment_index = 0;
if (assignments.size()) {
if (assignment_index >= assignments.size())
assignment_index = 0;
CombatAssignment* a = assignments[assignment_index++];
request = new
CampaignMissionRequest(campaign,
a->Type(),
start,
a->GetResource());
if (request)
request->SetObjective(a->GetObjective());
}
return request;
}
// +--------------------------------------------------------------------+
static int mission_type_index = -1;
static int mission_types[16] = {
Mission::PATROL,
Mission::PATROL,
Mission::ESCORT_FREIGHT,
Mission::PATROL,
Mission::ESCORT_FREIGHT,
Mission::PATROL,
Mission::ESCORT_FREIGHT,
Mission::ESCORT_FREIGHT,
Mission::PATROL,
Mission::ESCORT_FREIGHT,
Mission::PATROL,
Mission::ESCORT_FREIGHT,
Mission::PATROL,
Mission::PATROL,
Mission::ESCORT_FREIGHT,
Mission::PATROL
};
// +--------------------------------------------------------------------+
CampaignMissionRequest*
CampaignPlanMission::PlanRandomStarshipMission()
{
int type = Mission::PATROL;
int r = RandomIndex();
int ownside = player_group->GetIFF();
if (mission_type_index < 0)
mission_type_index = r;
else if (mission_type_index >= 16)
mission_type_index = 0;
type = mission_types[mission_type_index++];
if (type == Mission::ESCORT_FREIGHT) {
CombatGroup* freight = campaign->FindGroup(ownside, CombatGroup::FREIGHT);
if (!freight || freight->CountUnits() < 1)
type = Mission::PATROL;
}
CampaignMissionRequest* request = 0;
request = new
CampaignMissionRequest(campaign, type, start, player_group);
return request;
}
// +--------------------------------------------------------------------+
static int fighter_mission_index = 0;
static int fighter_mission_types[16] = {
Mission::PATROL,
Mission::SWEEP,
Mission::ESCORT_SHUTTLE,
Mission::AIR_PATROL,
Mission::SWEEP,
Mission::ESCORT_SHUTTLE,
Mission::PATROL,
Mission::PATROL,
Mission::AIR_SWEEP,
Mission::PATROL,
Mission::AIR_PATROL,
Mission::ESCORT_SHUTTLE,
Mission::PATROL,
Mission::SWEEP,
Mission::PATROL,
Mission::AIR_SWEEP
};
CampaignMissionRequest*
CampaignPlanMission::PlanRandomFighterMission()
{
CampaignMissionRequest* request = 0;
int type = fighter_mission_types[fighter_mission_index++];
int ownside = player_group->GetIFF();
CombatGroup* primary = player_group;
CombatGroup* obj = 0;
if (fighter_mission_index > 15)
fighter_mission_index = 0;
if (type == Mission::ESCORT_FREIGHT) {
CombatGroup* freight = campaign->FindGroup(ownside, CombatGroup::FREIGHT);
if (!freight || freight->CalcValue() < 1)
type = Mission::PATROL;
else
obj = freight;
}
else if (type == Mission::ESCORT_SHUTTLE) {
CombatGroup* shuttle = campaign->FindGroup(ownside, CombatGroup::LCA_SQUADRON);
if (!shuttle || shuttle->CalcValue() < 1)
type = Mission::PATROL;
else
obj = shuttle;
}
else if (primary->Type() == CombatGroup::WING) {
if (RandomChance())
primary = primary->FindGroup(CombatGroup::INTERCEPT_SQUADRON);
else
primary = primary->FindGroup(CombatGroup::FIGHTER_SQUADRON);
}
if (type >= Mission::AIR_PATROL && type <= Mission::AIR_INTERCEPT) {
CombatZone* zone = 0;
bool airborne = false;
if (primary)
zone = primary->GetAssignedZone();
if (zone && zone->GetRegions().size() > 1) {
Text air_region = *zone->GetRegions().at(1);
StarSystem* system = campaign->GetSystem(zone->System());
if (system) {
OrbitalRegion* rgn = system->FindRegion(air_region);
if (rgn && rgn->Type() == Orbital::TERRAIN)
airborne = true;
}
}
if (!airborne) {
if (type == Mission::AIR_INTERCEPT)
type = Mission::INTERCEPT;
else if (type == Mission::AIR_SWEEP)
type = Mission::SWEEP;
else
type = Mission::PATROL;
}
}
request = new
CampaignMissionRequest(campaign, type, start, primary);
if (request)
request->SetObjective(obj);
return request;
}
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