split the selection panel into one card per kind of selection

src/ui/selection/StationContent.cpp

@@ -0,0 +1,66 @@
+#include "StationContent.h"
+
+#include <QLabel>
+#include <QVBoxLayout>
+
+#include "EntityAdmin.h"
+#include "FactionComponent.h"
+#include "HealthComponent.h"
+#include "ModuleOwnerComponent.h"
+#include "Simulation.h"
+#include "WeaponComponent.h"
+
+StationContent::StationContent(const SelectionContext& context,
+                               const SelectionRequest& request, QWidget* parent)
+    : SelectionContent(context, std::nullopt, parent)
+    , m_entity(request.actors.front())
+{
+    m_statsLabel = new QLabel(this);
+    m_statsLabel->setWordWrap(true);
+    getRuntimeLayout()->addWidget(m_statsLabel);
+
+    EntityAdmin& admin = context.sim->getAdmin();
+    const bool isEnemy = admin.isValid(m_entity)
+        && admin.hasAll<FactionComponent>(m_entity)
+        && admin.get<FactionComponent>(m_entity).isEnemy;
+    setIdentity(QPixmap(), isEnemy ? tr("Enemy Defence Station")
+                                   : tr("Player Defence Station"));
+}
+
+void StationContent::refreshRuntime()
+{
+    EntityAdmin& admin = getContext().sim->getAdmin();
+    if (!admin.isValid(m_entity) || !admin.hasAll<HealthComponent>(m_entity))
+    {
+        return;
+    }
+    const HealthComponent& health = admin.get<HealthComponent>(m_entity);
+
+    // A station's weapons are child module entities pointing back at it, so its combined
+    // damage and range are summed over those rather than read off the station itself.
+    float totalDps  = 0.0f;
+    float maxRange  = 0.0f;
+    bool  hasWeapon = false;
+    const entt::entity station = m_entity;
+    admin.forEach<ModuleOwnerComponent, WeaponComponent>(
+        [&](entt::entity /*child*/, const ModuleOwnerComponent& owner,
+            const WeaponComponent& weapon)
+        {
+            if (owner.owner != station) { return; }
+            hasWeapon = true;
+            totalDps += weapon.damage * weapon.fireRateHz;
+            if (weapon.range_tiles > maxRange) { maxRange = weapon.range_tiles; }
+        });
+
+    QString text = tr("HP: %1 / %2")
+        .arg(static_cast<int>(health.hp + 0.5f))
+        .arg(static_cast<int>(health.maxHp + 0.5f));
+    if (hasWeapon)
+    {
+        text += tr("\nDPS: %1")
+            .arg(QString::number(static_cast<double>(totalDps), 'f', 1));
+        text += tr("\nRange: %1 tiles")
+            .arg(QString::number(static_cast<double>(maxRange), 'f', 1));
+    }
+    m_statsLabel->setText(text);
+}