X-Git-Url: http://git.localhorst.tv/?a=blobdiff_plain;f=src%2Fworld%2FPlanet.hpp;h=237159994c47da1c9dbd1e23bd235ffd2214cbb0;hb=cd80d7cfcac3c58d601db2ab4e0381dd77c06f44;hp=6106ccf06aa8a770d5928b4e1def95a1c8463a7c;hpb=91dfd6cd62ea0723c3c83572b4ebfa4ef7b4ac5f;p=blobs.git

diff --git a/src/world/Planet.hpp b/src/world/Planet.hpp
index 6106ccf..2371599 100644
--- a/src/world/Planet.hpp
+++ b/src/world/Planet.hpp
@@ -1,75 +1,98 @@
 #ifndef BLOBS_WORLD_PLANET_HPP_
 #define BLOBS_WORLD_PLANET_HPP_
 
+#include "Body.hpp"
+
+#include "Set.hpp"
 #include "Tile.hpp"
+#include "../graphics/SimpleVAO.hpp"
+#include "../math/glm.hpp"
 
 #include <cassert>
 #include <memory>
+#include <vector>
+#include <GL/glew.h>
 
 
 namespace blobs {
 namespace world {
 
-struct Tile;
+class TileType;
 
-/// A planet has six surfaces, numbered 0 to 5, each with tiles from
-/// +radius to -radius.
-class Planet {
+/// A planet has six surfaces, numbered 0 to 5, each filled with
+/// sidelength² tiles.
+class Planet
+: public Body {
 
 public:
-	explicit Planet(int radius);
+	explicit Planet(int sidelength);
 	~Planet();
 
-	Planet(Planet &&);
-	Planet &operator =(Planet &&);
-
 	Planet(const Planet &) = delete;
 	Planet &operator =(const Planet &) = delete;
 
+	Planet(Planet &&) = delete;
+	Planet &operator =(Planet &&) = delete;
+
 public:
+	/// surface normal
+	glm::dvec3 NormalAt(const glm::dvec3 &p) const noexcept { return normalize(p); }
+	/// height over surface
+	double ElevationAt(const glm::dvec3 &p) const noexcept { return length(p) - Radius(); }
+	/// distance to planet center
+	double DistanceAt(const glm::dvec3 &p) const noexcept { return length(p); }
+
+	/// get ground tile
+	Tile &TileAt(const glm::dvec3 &) noexcept;
+	const Tile &TileAt(const glm::dvec3 &) const noexcept;
+	const TileType &TileTypeAt(const glm::dvec3 &) const noexcept;
+
 	/// Get the tile at given surface and coordinates.
-	Tile &TileAt(int surface, int x, int y) {
-		return tiles[IndexOf(surface, x, y)];
-	}
-	const Tile &TileAt(int surface, int x, int y) const {
-		return tiles[IndexOf(surface, x, y)];
-	}
+	Tile &TileAt(int surface, int x, int y) noexcept;
+	const Tile &TileAt(int surface, int x, int y) const noexcept;
+	const TileType &TypeAt(int surface, int x, int y) const noexcept;
+
+	/// The length in tiles of the side of each surface.
+	int SideLength() const { return sidelength; }
 
+	// center point of tile on surface at elevation
+	glm::dvec3 TileCenter(int surface, int x, int y, double elevation = 0.0) const noexcept;
+
+	void BuildVAO(const Set<TileType> &);
+	void Draw(app::Assets &, graphics::Viewport &) override;
+
+private:
 	/// Convert coordinates into a tile index.
 	int IndexOf(int surface, int x, int y) const {
 		assert(0 <= surface && surface <= 5);
-		assert(-radius <= x && x <= radius);
-		assert(-radius <= y && y <= radius);
-		return surface * SurfaceArea() + ToOffset(y) * SideLength() + ToOffset(x);
-	}
-	/// Convert coordinate into offset
-	int ToOffset(int c) const {
-		return c + radius;
+		assert(0 <= x && x < sidelength);
+		assert(0 <= y && y < sidelength);
+		return surface * TilesPerSurface() + y * SideLength() + x;
 	}
-	/// The "radius" of the planet.
-	int Radius() const {
-		return radius;
-	}
-	/// The length of the side of each surface.
-	int SideLength() const {
-		return 2 * radius + 1;
-	}
-	/// The area (or number of tiles) of one surface
-	int SurfaceArea() const {
+	/// The number of tiles of one surface.
+	int TilesPerSurface() const {
 		return SideLength() * SideLength();
 	}
-	/// Total area of all surfaces combined.
-	int TotalArea() const {
-		return 6 * SurfaceArea();
+	/// Total number of tiles of all surfaces combined.
+	int TilesTotal() const {
+		return 6 * TilesPerSurface();
 	}
 
 private:
-	int radius;
-	std::unique_ptr<Tile []> tiles;
+	int sidelength;
+	std::vector<Tile> tiles;
+
+	struct Attributes {
+		glm::vec3 position;
+		glm::vec3 normal;
+		glm::vec3 tex_coord;
+	};
+	std::unique_ptr<graphics::SimpleVAO<Attributes, unsigned int>> vao;
 
 };
 
-void GenerateTest(Planet &);
+void GenerateEarthlike(const Set<TileType> &, Planet &) noexcept;
+void GenerateTest(const Set<TileType> &, Planet &) noexcept;
 
 }
 }