From 5680dc7b0c93d208fab8c4c30172ab2c3b53f82b Mon Sep 17 00:00:00 2001
From: Aki <please@ignore.pl>
Date: Sat, 19 Nov 2022 00:42:19 +0100
Subject: Split damage pop into more verbose components

---
 kurator/src/Battle.cpp   | 38 +++++++++++++++++++++++++-------------
 kurator/src/DamagePop.h  | 15 ---------------
 kurator/src/components.h | 34 ++++++++++++++++++++++++++++++++++
 3 files changed, 59 insertions(+), 28 deletions(-)
 delete mode 100644 kurator/src/DamagePop.h
 create mode 100644 kurator/src/components.h

diff --git a/kurator/src/Battle.cpp b/kurator/src/Battle.cpp
index ffddc92..bee8932 100644
--- a/kurator/src/Battle.cpp
+++ b/kurator/src/Battle.cpp
@@ -7,13 +7,14 @@
 
 #include <raylib.h>
 
+#include <kurator/battles/Battle.h>
 #include <kurator/battles/components.h>
 #include <kurator/battles/events.h>
-#include <kurator/battles/Battle.h>
+#include <kurator/battles/Point.h>
 #include <kurator/battles/scenarios.h>
 #include <kurator/universe/ShipType.h>
 
-#include "DamagePop.h"
+#include "components.h"
 #include "Session.h"
 #include "Title.h"
 
@@ -41,12 +42,21 @@ Battle::update(const float dt)
 {
 	battle->update(dt);
 	auto& registry = battle->registry();
-	auto pops = registry.view<DamagePop>();
-	for (auto&& [entity, pop] : pops.each()) {
-		pop.timer -= dt;
-		if (pop.timer < 0.0)
+	auto timers = registry.view<Timed>();
+	for (auto&& [entity, timer] : timers.each()) {
+		timer.left -= dt;
+		if (timer.left < 0.0)
 			registry.destroy(entity);
 	}
+	auto pops = registry.view<PopMove, battles::Transform>();
+	for (auto&& [entity, pop, transform] : pops.each()) {
+		const auto speed = pop.speed.scale(dt);
+		transform.position.x += speed.x;
+		transform.position.y += speed.y;
+		const auto damp = pop.speed.scale(pop.damp).scale(dt);
+		pop.speed.x -= damp.x;
+		pop.speed.y -= damp.y;
+	}
 	if (IsKeyPressed(KEY_SPACE))
 		session->set(std::make_shared<Title>(session));
 }
@@ -69,12 +79,11 @@ Battle::draw() const
 		DrawLine(x, y, x + 6 * std::cos(transform.angle), y + 6 * std::sin(transform.angle), WHITE);
 		DrawText(ship_type.name.c_str(), x+10, y-10, 20.0f, GRAY);
 	}
-	auto pops = registry.view<DamagePop, const battles::Transform>();
-	for (auto [entity, pop, transform] : pops.each()) {
-		const int x = width/2 + transform.position.x*scale;
-		const int y = height/2 + transform.position.y*scale;
-		const int text = MeasureText(pop.text, 10);
-		DrawText(pop.text, x-text/2, y-5-22*(0.4-pop.timer), 10, RED);
+	auto pops = registry.view<CenteredText, battles::Transform>();
+	for (const auto& [entity, text, transform] : pops.each()) {
+		const int x = width/2 + transform.position.x*scale - text.width/2;
+		const int y = height/2 + transform.position.y*scale - text.font_size/2;
+		DrawText(text.text, x, y, text.font_size, text.color);
 	}
 }
 
@@ -86,9 +95,12 @@ Battle::receive(const battles::Hit& hit)
 	if (!registry.valid(hit.victim))
 		return;
 	const auto entity = registry.create();
+	const auto text = TextFormat("%.1f", hit.damage);
 	const auto& transform = registry.get<battles::Transform>(hit.victim);
-	registry.emplace<DamagePop>(entity, 0.4, TextFormat("%.1f", hit.damage));
+	registry.emplace<Timed>(entity, 1.2);
+	registry.emplace<CenteredText>(entity, text, MeasureText(text, 10), 10, RED);
 	registry.emplace<battles::Transform>(entity, transform.position, 0.0);
+	registry.emplace<PopMove>(entity, battles::Point{0.0, -0.6}, 0.998);
 }
 
 
diff --git a/kurator/src/DamagePop.h b/kurator/src/DamagePop.h
deleted file mode 100644
index dc4c19a..0000000
--- a/kurator/src/DamagePop.h
+++ /dev/null
@@ -1,15 +0,0 @@
-#pragma once
-
-
-namespace kurator
-{
-
-
-struct DamagePop
-{
-	double timer;
-	const char* text;
-};
-
-
-}  // namespace kurator
diff --git a/kurator/src/components.h b/kurator/src/components.h
new file mode 100644
index 0000000..655db2f
--- /dev/null
+++ b/kurator/src/components.h
@@ -0,0 +1,34 @@
+#pragma once
+
+#include <raylib.h>
+
+#include <kurator/battles/Point.h>
+
+
+namespace kurator
+{
+
+
+struct Timed
+{
+	double left;
+};
+
+
+struct CenteredText
+{
+	const char* text;
+	int width;
+	int font_size;
+	Color color;
+};
+
+
+struct PopMove
+{
+	battles::Point speed;
+	double damp;
+};
+
+
+}  // namespace kurator
-- 
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