From 0e57ea98049658b4d82488c43d71b4ced534c2af Mon Sep 17 00:00:00 2001
From: Aki <please@ignore.pl>
Date: Sat, 12 Nov 2022 13:43:54 +0100
Subject: Extracted basic implementation of concrete Battle

---
 battles/src/BaseBattle.cpp | 66 ++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 66 insertions(+)
 create mode 100644 battles/src/BaseBattle.cpp

(limited to 'battles/src/BaseBattle.cpp')

diff --git a/battles/src/BaseBattle.cpp b/battles/src/BaseBattle.cpp
new file mode 100644
index 0000000..a9ac45c
--- /dev/null
+++ b/battles/src/BaseBattle.cpp
@@ -0,0 +1,66 @@
+#include "BaseBattle.h"
+
+#include <cmath>
+#include <memory>
+
+#include <entt/entity/registry.hpp>
+
+#include <kurator/battles/components.h>
+#include <kurator/battles/Scenario.h>
+#include <kurator/universe/ShipType.h>
+
+
+namespace kurator
+{
+namespace battles
+{
+
+
+int total_teams_in(const Scenario& scenario);
+
+
+BaseBattle::BaseBattle(const Scenario& scenario) :
+	_registry {},
+	spawner {total_teams_in(scenario), 2.5, 0.1}
+{
+	for (const auto& ship : scenario.ships) {
+		const auto entity = _registry.create();
+		_registry.emplace<universe::ShipType>(entity, ship.type);
+		_registry.emplace<Team>(entity, ship.team);
+		_registry.emplace<Transform>(entity, spawner.get(ship.team));
+	}
+}
+
+
+entt::registry&
+BaseBattle::registry()
+{
+	return _registry;
+}
+
+
+void
+BaseBattle::update(const float dt)
+{
+	auto view = _registry.view<Transform>();
+	for (auto&& [entity, transform] : view.each()) {
+		transform.position.x += 0.1 * dt * std::cos(transform.angle);
+		transform.position.y += 0.1 * dt * std::sin(transform.angle);
+	}
+}
+
+
+int
+total_teams_in(const Scenario& scenario)
+{
+	int last_team = 0;
+	for (const auto& ship : scenario.ships) {
+		if (ship.team > last_team)
+			last_team = ship.team;
+	}
+	return last_team + 1;
+}
+
+
+}  // namespace battles
+}  // namespace kurator
-- 
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