From c2421c3ac2018faf5d47205ee979acec181d9672 Mon Sep 17 00:00:00 2001
From: Dan Goodliffe <dan@randomdan.homeip.net>
Date: Sun, 2 Jan 2022 18:04:00 +0000
Subject: Separate geographic data (GeoData) from its visual representation(s)
 (Terrain)

---
 game/geoData.h | 36 ++++++++++++++++++++++++++++++++++++
 1 file changed, 36 insertions(+)
 create mode 100644 game/geoData.h

(limited to 'game/geoData.h')

diff --git a/game/geoData.h b/game/geoData.h
new file mode 100644
index 0000000..39c149c
--- /dev/null
+++ b/game/geoData.h
@@ -0,0 +1,36 @@
+#pragma once
+
+#include <filesystem>
+#include <glm/glm.hpp>
+#include <span>
+#include <utility>
+#include <vector>
+
+class GeoData {
+public:
+	struct Node {
+		float height {-1.5F};
+	};
+
+	using Limits = std::pair<glm::ivec2, glm::ivec2>;
+
+	GeoData() = default;
+	explicit GeoData(Limits limit, float scale = 10.F);
+
+	void generateRandom();
+	void loadFromImages(const std::filesystem::path &, float scale);
+
+	[[nodiscard]] unsigned int at(glm::ivec2) const;
+	[[nodiscard]] unsigned int at(int x, int y) const;
+
+	[[nodiscard]] Limits getLimit() const;
+	[[nodiscard]] glm::uvec2 getSize() const;
+	[[nodiscard]] float getScale() const;
+	[[nodiscard]] std::span<const Node> getNodes() const;
+
+protected:
+	Limits limit {}; // Base grid limits first(x,y) -> second(x,y)
+	glm::uvec2 size {};
+	float scale {1};
+	std::vector<Node> nodes;
+};
-- 
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