From 2c6e2d631760f962e58fef7048ec0c7d3ecaa387 Mon Sep 17 00:00:00 2001
From: Aki <please@ignore.pl>
Date: Sat, 31 Dec 2022 18:56:32 +0100
Subject: Turrets may now shoot multiple times per frame

---
 sim/src/TurretControl.cpp | 52 ++++++++++++++++++++++++++++++-----------------
 1 file changed, 33 insertions(+), 19 deletions(-)

(limited to 'sim')

diff --git a/sim/src/TurretControl.cpp b/sim/src/TurretControl.cpp
index b5527fc..19dbe21 100644
--- a/sim/src/TurretControl.cpp
+++ b/sim/src/TurretControl.cpp
@@ -14,6 +14,9 @@ namespace sim
 {
 
 
+bool consume(float& dt, double& target);
+
+
 void
 TurretControl::update(entt::registry& registry, entt::dispatcher& dispatcher, const float dt)
 {
@@ -26,30 +29,41 @@ TurretControl::update(entt::registry& registry, entt::dispatcher& dispatcher, co
 		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});
+		const auto& target = registry.get<Transform>(state.target);
+		const auto distance = transform.position.distance(target.position);
+		if (distance > def.optimal_range * 2.5)
+			continue;
+		auto remaining_dt = dt;
+		while (remaining_dt > 0.0) {
+			if (control.rounds < 1 && consume(remaining_dt, control.reload))
+				control.rounds = def.rounds;
+			if (control.rounds > 0 && consume(remaining_dt, control.delay)) {
+				auto& target_points = registry.get<HitPoints>(state.target);
+				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;
 			}
-			control.delay = def.rate_of_fire;
-			if (--control.rounds < 1)
-				control.reload = def.reload;
 		}
 	}
 }
 
 
+bool
+consume(float& dt, double& target)
+{
+	if (target <= 0.0)
+		return true;
+	const auto _dt = dt;
+	dt -= target;
+	target -= _dt;
+	return target <= 0.0;
+}
+
+
 }  // namespace sim
 }  // namespace kurator
-- 
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