From c4fce4331d5c80c3e97221eb30070f760838544d Mon Sep 17 00:00:00 2001
From: Aki <please@ignore.pl>
Date: Thu, 16 Feb 2023 01:08:05 +0100
Subject: Hovered ship markers are now highlighted

---
 kurator/src/Battle.cpp  |  1 +
 kurator/src/markers.cpp | 33 ++++++++++++++++++++++++++++-----
 kurator/src/markers.h   |  4 ++++
 3 files changed, 33 insertions(+), 5 deletions(-)

diff --git a/kurator/src/Battle.cpp b/kurator/src/Battle.cpp
index 68879c6..0918e30 100644
--- a/kurator/src/Battle.cpp
+++ b/kurator/src/Battle.cpp
@@ -95,6 +95,7 @@ Battle::update()
 		ctx.camera.scale = std::min(GetScreenWidth()/30000.0, GetScreenHeight()/30000.0);
 	ctx.clock.update();
 	simulation_base(ctx);
+	update_markers(ctx);
 	progress_timers(ctx);
 	move_ui_pops(ctx);
 	blink_crosses(ctx);
diff --git a/kurator/src/markers.cpp b/kurator/src/markers.cpp
index a4ed417..436bd33 100644
--- a/kurator/src/markers.cpp
+++ b/kurator/src/markers.cpp
@@ -4,6 +4,7 @@
 #include <string>
 #include <utility>
 
+#include <entt/entity/entity.hpp>
 #include <raylib.h>
 
 #include <kurator/engine/Point.h>
@@ -24,21 +25,41 @@ namespace kurator
 void
 attach_markers(sim::State& ctx)
 {
-	auto ships = ctx.registry.view<sim::Team, universe::ShipType, universe::UniqueIdentifier>();
-	for (const auto& [entity, team, type, identifier] : ships.each()) {
+	auto ships = ctx.registry.view<sim::Team, universe::ShipType, universe::UniqueIdentifier, sim::Transform>();
+	for (const auto& [entity, team, type, identifier, transform] : ships.each()) {
+		auto pos = ctx.camera.to_screen(transform.position);
 		std::string label = TextFormat("%s (%d)", type.name.c_str(), identifier.id);
-		ctx.registry.emplace<Marker>(entity, 5.0, team_color(team.id), std::move(label));
+		ctx.registry.emplace<Marker>(entity, std::move(pos), 5.0, team_color(team.id), std::move(label));
 		ctx.registry.emplace<PopupEmitter>(entity);
 	}
 }
 
 
 void
+update_markers(sim::State& ctx)
+{
+	engine::Point mouse {static_cast<double>(GetMouseX()), static_cast<double>(GetMouseY())};
+	entt::entity hover {entt::null};
+	auto markers = ctx.registry.view<Marker, sim::Transform>();
+	for (auto&& [entity, marker, transform] : markers.each()) {
+		marker.screen = ctx.camera.to_screen(transform.position);
+		marker.hovered = false;
+		if (mouse.distance(marker.screen) <= marker.radius)
+			hover = entity;
+	}
+	if (ctx.registry.valid(hover)) {
+		auto& marker = ctx.registry.get<Marker>(hover);
+		marker.hovered = true;
+	}
+}
+
+
+void
 draw_markers(const sim::State& ctx)
 {
 	auto view = ctx.registry.view<Marker, sim::Transform>();
 	for (const auto& [entity, marker, transform] : view.each()) {
-		const auto pos = ctx.camera.to_screen(transform.position);
+		const auto& pos = marker.screen;
 		if (ctx.registry.all_of<sim::FloatingMovement>(entity)) {
 			const auto& movement = ctx.registry.get<sim::FloatingMovement>(entity);
 			const auto& velocity = movement.speed;
@@ -48,9 +69,11 @@ draw_markers(const sim::State& ctx)
 		}
 		const engine::Point direction {std::cos(transform.angle), std::sin(transform.angle)};
 		const auto edge = pos + direction.scale(marker.radius);
+		if (marker.hovered)
+			DrawCircle(pos.x, pos.y, marker.radius + 2, WHITE);
 		DrawCircle(pos.x, pos.y, marker.radius, marker.color);
 		DrawLine(pos.x, pos.y, edge.x, edge.y, WHITE);
-		DrawText(marker.name.c_str(), pos.x+10, pos.y-5, 10.0f, GRAY);
+		DrawText(marker.name.c_str(), pos.x+10, pos.y-5, 10.0f, marker.hovered ? WHITE : GRAY);
 	}
 }
 
diff --git a/kurator/src/markers.h b/kurator/src/markers.h
index c6522cf..f390ff6 100644
--- a/kurator/src/markers.h
+++ b/kurator/src/markers.h
@@ -4,6 +4,7 @@
 
 #include <raylib.h>
 
+#include <kurator/engine/Point.h>
 #include <kurator/sim/State.h>
 
 
@@ -13,13 +14,16 @@ namespace kurator
 
 struct Marker
 {
+	engine::Point screen;
 	double radius;
 	Color color;
 	std::string name;
+	bool hovered = false;
 };
 
 
 void attach_markers(sim::State& ctx);
+void update_markers(sim::State& ctx);
 void draw_markers(const sim::State& ctx);
 
 
-- 
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