Moved Stars45 to StarsEx

1 files changed, 299 insertions, 0 deletions

diff --git a/StarsEx/Power.cpp b/StarsEx/Power.cpp
new file mode 100644
index 0000000..f86c5af
--- /dev/null
+++ b/StarsEx/Power.cpp
@@ -0,0 +1,299 @@
+/*  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
+    ========
+    Power generation and usage classes
+*/
+
+#include "Power.h"
+#include "Ship.h"
+#include "NetUtil.h"
+
+#include "Game.h"
+#include "ContentBundle.h"
+
+// +----------------------------------------------------------------------+
+
+static char*   source_type[] = {
+    "sys.power.battery", "sys.power.auxilliary", "sys.power.fusion"
+};
+
+static int     source_value[] = {
+    1, 2, 4
+};
+
+PowerSource::PowerSource(SUBTYPE s, double max_out, double f_ratio)
+: System(POWER_SOURCE, (int) s, "Power", source_value[s], 0),
+max_output((float) max_out), fuel_ratio((float) f_ratio),
+route_changed(false), requested_power_level(1.0f)
+{
+    name = ContentBundle::GetInstance()->GetText(source_type[s]);
+    abrv = ContentBundle::GetInstance()->GetText(Text(source_type[s]) + ".abrv");
+
+    if (fuel_ratio < 1) {
+        switch (subtype) {    // enough to last for [n] hours at full power
+        case BATTERY:     fuel_ratio = max_output *   5 * 3600 / 100; break;
+        case AUX:         fuel_ratio = max_output *  50 * 3600 / 100; break;
+        case FUSION:      fuel_ratio = max_output * 100 * 3600 / 100; break;
+        }
+    }
+
+    capacity = 100.0f;
+
+    if (subtype != BATTERY) {
+        emcon_power[0] =  10;
+        emcon_power[1] =  50;
+        emcon_power[2] = 100;
+    }
+}
+
+PowerSource::PowerSource(const PowerSource& p)
+: System(p),
+max_output(p.max_output), fuel_ratio(p.fuel_ratio),
+route_changed(false), requested_power_level(1.0f)
+{
+    Mount(p);
+    SetAbbreviation(p.Abbreviation());
+}
+
+// +----------------------------------------------------------------------+
+
+void
+PowerSource::AddClient(System* client)
+{
+    if (client) {
+        int old_src_index = client->GetSourceIndex();
+
+        client->SetSourceIndex(GetID());
+        clients.append(client);
+        route_changed = true;
+
+        if (ship && old_src_index != GetID())
+        NetUtil::SendSysStatus(ship, client);
+    }
+}
+
+void
+PowerSource::RemoveClient(System* client)
+{
+    if (client && clients.contains(client)) {
+        client->SetSourceIndex(-1);
+        clients.remove(client);
+        route_changed = true;
+    }
+}
+
+// +----------------------------------------------------------------------+
+
+int
+PowerSource::Charge() const
+{
+    return (int) capacity;
+}
+
+void
+PowerSource::SetFuelRange(double hours)
+{
+    if (hours > 0)
+    fuel_ratio = (float) (max_output * hours * 3600 / 100);
+}
+
+// +----------------------------------------------------------------------+
+
+void
+PowerSource::ExecFrame(double seconds)
+{
+    if (seconds < 0.001)
+    seconds = 0.001;
+
+    if (capacity <= 0)
+    capacity = 0;
+
+    System::ExecFrame(seconds);
+
+    double energy_requested = 0;
+    double energy_avail     = 0;
+    double total_distrib    = 0;
+
+    // fuel leak?
+    if (availability < 0.4 && capacity > 0)
+    capacity -= (float) (0.03 * seconds);
+
+    if (IsPowerOn() && capacity > 0) {
+        energy_avail = max_output * seconds * power_level * availability;
+
+        if (power_level < requested_power_level) {
+            power_level += (float) (seconds * 0.03);     // thirty seconds to charge up
+
+            if (power_level > requested_power_level)
+            power_level = (float) requested_power_level;
+        }
+        else if (power_level > requested_power_level) {
+            power_level -= (float) (seconds * 0.10);     // ten seconds to power down
+
+            if (power_level < requested_power_level)
+            power_level = (float) requested_power_level;
+        }
+    }
+
+    ListIter<System> iter = clients;
+    while (++iter) {
+        System* sink = iter.value();
+
+        if (sink->IsPowerOn()) {
+            double joules = sink->GetRequest(seconds);
+
+            if (joules > 0) {
+                if (sink->IsPowerCritical()) {
+
+                    if (joules > energy_avail)
+                    joules = energy_avail;
+
+                    energy_avail  -= joules;
+                    total_distrib += joules;
+                    sink->Distribute(joules, seconds);
+                }
+                else {
+                    energy_requested += joules;
+                }
+            }
+        }
+        else {
+            sink->Distribute(-0.2 * sink->GetCapacity() * seconds, seconds);
+        }
+    }
+
+    if (energy_avail > 0) {
+
+        // enough to go around:
+        if (energy_requested <= energy_avail) {
+            iter.reset();
+
+            while (++iter) {
+                System* sink = iter.value();
+
+                if (sink->IsPowerOn() && !sink->IsPowerCritical()) {
+                    double joules = sink->GetRequest(seconds);
+                    total_distrib += joules;
+                    sink->Distribute(joules, seconds);
+                }
+            }
+        }
+
+        // load balancing:
+        else {
+            iter.reset();
+            while (++iter) {
+                System* sink = iter.value();
+
+                if (sink->IsPowerOn() && !sink->IsPowerCritical()) {
+                    double request  = sink->GetRequest(seconds);
+                    double delivery = 0;
+
+                    if (request > 0)
+                    delivery = energy_avail * (request/energy_requested);
+
+                    if (delivery > 0) {
+                        total_distrib += delivery;
+                        sink->Distribute(delivery, seconds);
+                    }
+                }
+            }
+        }
+    }
+
+    if (IsPowerOn() && capacity > 0 && !Game::GetInstance()->Paused()) {
+        // reactors always burn at least 10% of max (to maintain operating temp):
+        if (subtype != BATTERY) {
+            double baseline = 0.1 * max_output * seconds;
+
+            if (total_distrib < baseline)
+            total_distrib = baseline;
+        }
+
+        // expend fuel:
+        if (total_distrib > 0) {
+            double effective_fuel_ratio = fuel_ratio;
+
+            switch (Ship::GetFlightModel()) {
+            default:
+            case Ship::FM_STANDARD:
+                effective_fuel_ratio = 1 * fuel_ratio * (0.25 + 0.75 * availability);
+                break;
+
+            case Ship::FM_RELAXED:
+                effective_fuel_ratio = 3 * fuel_ratio * (0.25 + 0.75 * availability);
+                break;
+
+            case Ship::FM_ARCADE:
+                effective_fuel_ratio = 4 * fuel_ratio * (0.25 + 0.75 * availability);
+                break;
+            }
+
+            capacity -= (float) (total_distrib / effective_fuel_ratio);
+        }
+    }
+
+    else if (capacity <= 0) {
+        capacity = 0.0f;
+        PowerOff();
+    }
+}
+
+// +--------------------------------------------------------------------+
+
+void
+PowerSource::SetPowerLevel(double level)
+{
+    if (level > 100)
+    level = 100;
+    else if (level < 0)
+    level = 0;
+
+    level /= 100;
+
+    if (requested_power_level != level) {
+        // if the system is on emergency override power,
+        // do not let the EMCON system use this method
+        // to drop it back to normal power:
+        if (requested_power_level > 1 && level == 1) {
+            requested_power_level = 1.2f;
+        }
+
+        else {
+            requested_power_level = (float) level;
+        }
+    }
+}
+
+void
+PowerSource::SetOverride(bool over)
+{
+    bool changed = false;
+
+    if (over && requested_power_level != 1.2f) {
+        requested_power_level = 1.2f;
+        changed = true;
+    }
+
+    else if (!over && requested_power_level > 1) {
+        requested_power_level = 1.0f;
+        changed = true;
+    }
+
+    if (changed)
+    NetUtil::SendSysStatus(ship, this);
+}
+
+void
+PowerSource::DrainPower(double to_level)
+{
+    if (to_level >= 0 && to_level < power_level)
+    power_level = (float) to_level;
+}