From 087803532fd7dfa04bc9a39fd2886f572002d0b1 Mon Sep 17 00:00:00 2001
From: Aki <please@ignore.pl>
Date: Sat, 31 Dec 2022 18:12:24 +0100
Subject: Extracted TurretControl to own unit

---
 sim/src/TurretControl.cpp | 55 +++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 55 insertions(+)
 create mode 100644 sim/src/TurretControl.cpp

(limited to 'sim/src/TurretControl.cpp')

diff --git a/sim/src/TurretControl.cpp b/sim/src/TurretControl.cpp
new file mode 100644
index 0000000..b5527fc
--- /dev/null
+++ b/sim/src/TurretControl.cpp
@@ -0,0 +1,55 @@
+#include <kurator/sim/TurretControl.h>
+
+#include <entt/entity/registry.hpp>
+#include <entt/signal/dispatcher.hpp>
+
+#include <kurator/sim/components.h>
+#include <kurator/sim/events.h>
+#include <kurator/universe/TurretType.h>
+
+
+namespace kurator
+{
+namespace sim
+{
+
+
+void
+TurretControl::update(entt::registry& registry, entt::dispatcher& dispatcher, const float dt)
+{
+	auto view = registry.view<TurretControl, universe::TurretType>();
+	for (auto&& [entity, control, def] : view.each()) {
+		if (!registry.valid(control.owner)) {
+			registry.destroy(entity);
+			continue;
+		}
+		const auto& [state, transform] = registry.get<AIState, Transform>(control.owner);  // no checks
+		if (!registry.valid(state.target))
+			continue;
+		if (control.reload > 0.0)
+			control.reload -= dt;
+		if (control.rounds < 1 && control.reload <= 0.0)
+			control.rounds = def.rounds;
+		if (control.delay > 0.0)
+			control.delay -= dt;
+		if (control.rounds > 0 && control.delay <= 0.0) {
+			auto& target_points = registry.get<HitPoints>(state.target);
+			const auto& target = registry.get<Transform>(state.target);
+			const auto distance = transform.position.distance(target.position);
+			if (distance > def.optimal_range * 2.5)
+				continue;
+			const auto damage = def.effective_damage(distance);
+			if (damage > 0.0) {
+				target_points.health -= damage;
+				dispatcher.trigger(Hit{damage, control.owner, state.target});
+			}
+			control.delay = def.rate_of_fire;
+			if (--control.rounds < 1)
+				control.reload = def.reload;
+		}
+	}
+}
+
+
+}  // namespace sim
+}  // namespace kurator
-- 
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