include/fggl/gfx/paint.hpp

@@ -23,6 +23,147 @@ namespace fggl::gfx {
 
 	using RadianAngle = float;
 
+	constexpr float COLOUR_MAX = 255.0F;
+	constexpr uint32_t BYTE_MASK = 0xFF;
+	constexpr uint8_t ONE_BYTE = 8;
+	constexpr uint8_t TWO_BYTES = 16;
+
+	constexpr math::vec3 rgb(uint32_t value) {
+		uint8_t red = (value & BYTE_MASK);
+		uint8_t green = ((value >> ONE_BYTE ) & BYTE_MASK);
+		uint8_t blue = ((value >> TWO_BYTES ) & BYTE_MASK);
+		return { (float)red / COLOUR_MAX, (float)green / COLOUR_MAX, (float)blue / COLOUR_MAX};
+	}
+
+	namespace colours {
+		constexpr math::vec3 rgb_decimal(uint8_t red, uint8_t green, uint8_t blue) {
+			return { (float)red / COLOUR_MAX, (float)green / COLOUR_MAX, (float)blue / COLOUR_MAX};
+		}
+
+		constexpr math::vec3 rgb(uint32_t value) {
+			uint8_t red = ( (value >> TWO_BYTES) & BYTE_MASK);
+			uint8_t green = ( (value >> ONE_BYTE) & BYTE_MASK);
+			uint8_t blue = value & BYTE_MASK;
+			return rgb_decimal(red, green, blue);
+		}
+
+
+		//
+		// Extended (CSS3) Colours
+		//
+
+		// pinks
+		constexpr auto MEDIUM_VIOLET_RED = rgb(0xC71585);
+		constexpr auto DEEP_PINK = rgb(0xFF1493);
+		constexpr auto PALE_VIOLET_RED = rgb(0xDB7093);
+		constexpr auto HOT_PINK = rgb(0xFF69B4);
+		constexpr auto LIGHT_PINK = rgb(0xFFB6C1);
+		constexpr auto PINK = rgb(0xFFC0CB);
+
+		// Reds
+		constexpr auto DARK_RED = rgb(0x8B0000);
+		constexpr auto RED = rgb(0xFF0000);
+		constexpr auto FIRE_BRICK = rgb(0xB22222);
+		constexpr auto CRIMSON = rgb(0xDC143C);
+		constexpr auto INDIAN_RED = rgb(0xCD5C5C);
+		constexpr auto LIGHT_CORAL = rgb(0xF08080);
+		constexpr auto SALMON = rgb(0xFA8072);
+		constexpr auto DARK_SALMON = rgb(0xE9967A);
+		constexpr auto LIGHT_SALMON = rgb(0xFFA07A);
+
+		// Oranges
+		constexpr auto ORANGE_RED = rgb(0xFF4500);
+		constexpr auto TOMATO = rgb(0xFF9347);
+		constexpr auto DARK_ORANGE = rgb(0xFF8C00);
+		constexpr auto CORAL = rgb(0xFF7F50);
+		constexpr auto ORANGE = rgb(0xFFA500);
+
+		// Yellows
+		constexpr auto DARK_KHAKI = rgb(0xBDB76B);
+		constexpr auto GOLD = rgb(0xFFD700);
+		constexpr auto KHAKI = rgb(0xF0E68C);
+		constexpr auto PEACH_PUFF = rgb(0xFFDAB9);
+		constexpr auto YELLOW = rgb(0xFFFF00);
+		constexpr auto PALE_GOLDENROD = rgb(0xEEE8AA);
+		constexpr auto MOCCASIN = rgb(0xFFE4B5);
+		constexpr auto PAPAYA_WHIP = rgb(0xFFEFD5);
+		constexpr auto LIGHT_GOLDENROD_YELLOW = rgb(0xFAFAD2);
+		constexpr auto LEMON_CHIFFON = rgb(0xFFFACD);
+		constexpr auto LIGHT_YELLOW = rgb(0xFFFFE0);
+
+		// Browns
+		constexpr auto MAROON = rgb(0x800000);
+		constexpr auto BROWN = rgb(0xA52A2A);
+		constexpr auto SADDLE_BROWN = rgb(0x8B4513);
+		constexpr auto SIENNA = rgb(0xA0522D);
+		constexpr auto CHOCOLATE = rgb(0xD2691E);
+		constexpr auto DARK_GOLDENROD = rgb(0xB8860B);
+		constexpr auto PERU = rgb(0xCD853F);
+		constexpr auto ROSY_BROWN = rgb(0xBC8F8F);
+		constexpr auto GOLDENROD = rgb(0xDAA520);
+		constexpr auto SANDY_BROWN = rgb(0xF4A460);
+		constexpr auto TAN = rgb(0xD2B48C);
+		constexpr auto BURLYWOOD = rgb(0xDEB887);
+		constexpr auto WHEAT = rgb(0xF5DEB3);
+		constexpr auto NAVAJO_WHITE = rgb(0xFFDEAD);
+		constexpr auto BISQUE = rgb(0xFFEAC4);
+		constexpr auto BLANCHED_ALMOND = rgb(0xFFEBCD);
+		constexpr auto CORNSILK = rgb(0xFFF8DC);
+
+		// Greens
+		constexpr auto DARK_GREEN = rgb(0x006400);
+		constexpr auto GREEN = rgb(0x008000);
+		constexpr auto DARK_OLIVE_GREEN = rgb(0x556B2F);
+		constexpr auto FOREST_GREEN = rgb(0x228B22);
+		constexpr auto SEA_GREEN = rgb(0x2E8B57);
+		constexpr auto OLIVE = rgb(0x808000);
+		constexpr auto OLIVE_DRAB = rgb(0x6B8E23);
+		constexpr auto MEDIUM_SEA_GREEN = rgb(0x3CB371);
+		constexpr auto LIME_GREEN = rgb(0x32CD32);
+		constexpr auto LIME = rgb(0x00FF00);
+		constexpr auto SPRING_GREEN = rgb(0x00FF7F);
+		constexpr auto MEDIUM_SPRING_GREEN = rgb(0x00FA9A);
+		constexpr auto DARK_SEA_GREEN = rgb(0x8FBC8F);
+		constexpr auto MEDIUM_AQUAMARINE = rgb(0x66CDAA);
+		constexpr auto YELLOW_GREEN = rgb(0x9ACD32);
+		constexpr auto LAWN_GREEN = rgb(0x7FFF00);
+		constexpr auto CHARTREUSE = rgb(0x7FFF00);
+		constexpr auto LIGHT_GREEN = rgb(0x90EE90);
+		constexpr auto GREEN_YELLOW = rgb(0xADFF2F);
+		constexpr auto PALE_GREEN = rgb(0x98FB98);
+
+		// Cyans
+		// TODO finish writing out the cyan list
+		constexpr auto CYAN = rgb(0xFFFF);
+
+		// Blues
+		// TODO finish writing out the blue list
+		constexpr auto MIDNIGHT_BLUE = rgb(0x191970);
+
+		/// Purples, Violets, and Magentas
+		// TODO finish writing out the purple list
+		constexpr auto FUCHSIA = rgb(0xFF00FF);
+		constexpr auto MAGENTA = FUCHSIA;
+
+		// Whites
+		//TODO finish writing out the white list
+		constexpr auto WHITE = rgb(0xFFFFFF);
+
+		// Grays and Blacks
+		constexpr auto BLACK = rgb(0x000000);
+		constexpr auto DARK_SLATE_GRAY = rgb(0x2F4F4F);
+		constexpr auto DIM_GRAY = rgb(0x696969);
+		constexpr auto SLATE_GRAY = rgb(0x708090);
+		constexpr auto GRAY = rgb(0x808080);
+		constexpr auto LIGHT_SLATE_GRAY = rgb(0x778899);
+		constexpr auto DARK_GRAY = rgb(0xA9A9A9);
+		constexpr auto SILVER = rgb(0xC0C0C0);
+		constexpr auto LIGHT_GRAY = rgb(0xD3D3D3);
+		constexpr auto GAINSBORO = rgb(0xDCDCDC);
+	}
+
+
+
 	enum class PathType {
 		MOVE,
 		PATH,
@@ -67,6 +208,70 @@ namespace fggl::gfx {
 		std::vector<math::vec3> m_colours;
 	};
 
+	inline Path2D make_rect(math::vec2 center, math::vec2 radius, math::vec3 colour = {1.0f, 1.0f, 1.0f}) {
+		fggl::gfx::Path2D tileGfx(center);
+		tileGfx.colour(colour);
+		tileGfx.moveTo(center - radius);
+		tileGfx.pathTo({center.x + radius.x, center.y - radius.y});
+		tileGfx.pathTo(center + radius);
+		tileGfx.pathTo({center.x - radius.x, center.y + radius.y});
+		tileGfx.close();
+		return tileGfx;
+	}
+
+	struct ShapeOpts {
+		float angleOffset = 0.0F;
+		bool sinFirst = true;
+	};
+
+	inline Path2D make_shape(math::vec2 center, float radius, int sides, math::vec3 colour = colours::WHITE, ShapeOpts opts = {}) {
+		float angle = ((math::PI * 2.0F) / sides);
+
+		fggl::gfx::Path2D tileGfx(center);
+		tileGfx.colour(colour);
+
+		for (int i=0; i < sides; ++i) {
+			math::vec2 pos (
+				(float)(cosf(i * angle + opts.angleOffset) * radius),
+				(float)(sinf(i * angle + opts.angleOffset) * radius)
+				);
+			pos += center;
+
+			if ( i == 0 ) {
+				tileGfx.moveTo( pos );
+			} else {
+				tileGfx.pathTo( pos );
+			}
+		}
+		tileGfx.close();
+		return tileGfx;
+	}
+
+	inline Path2D make_arc(math::vec2 center, float radius, float start, float end, math::vec3 colour = colours::WHITE, int slices = 25) {
+		const float angle = (M_PI * 2.0) / slices;
+		fggl::gfx::Path2D tileGfx(center);
+
+		tileGfx.colour(colour);
+		tileGfx.moveTo(center);
+		for (float totalAngle = start; totalAngle < end; totalAngle += angle) { // NOLINT(cert-flp30-c)
+			float xPos = (float)(sinf(totalAngle) * radius) + center.x;
+			float yPos = (float)(cosf(totalAngle) * radius) + center.y;
+			tileGfx.pathTo({xPos, yPos});
+			if ( (totalAngle + angle) > end) {
+				break;
+			}
+		}
+
+		{
+			float xPos = (float) (sinf(end) * radius) + center.x;
+			float yPos = (float) (cosf(end) * radius) + center.y;
+			tileGfx.pathTo( {xPos, yPos} );
+		}
+
+		tileGfx.close();
+		return tileGfx;
+	}
+
 	enum class PaintType {
 		FILL,
 		STROKE
@@ -80,6 +285,7 @@ namespace fggl::gfx {
 	struct TextCmd {
 		const std::string text;
 		const math::vec2 pos;
+		const math::vec3 colour;
 	};
 
 	class Paint {
@@ -95,15 +301,15 @@ namespace fggl::gfx {
 				m_cmds.push_back({PaintType::STROKE, path});
 			}
 
-			void text(const std::string &text, const math::vec2 &pos) {
-				m_text.push_back({text, pos});
+			void text(const std::string &text, const math::vec2 &pos, const math::vec3f colour = fggl::gfx::colours::BLACK) {
+				m_text.push_back({text, pos, colour});
 			}
 
 			const std::vector<PaintCmd> &cmds() const {
 				return m_cmds;
 			}
 
-			const std::vector<TextCmd>& textCmds() const {
+			const std::vector<TextCmd> &textCmds() const {
 				return m_text;
 			}
 

include/fggl/gfx/pallets.hpp

+/*
+ * This file is part of FGGL.
+ *
+ * FGGL is free software: you can redistribute it and/or modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any
+ * later version.
+ *
+ * FGGL is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty
+ * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License along with FGGL.
+ * If not, see <https://www.gnu.org/licenses/>.
+ */
+
+//
+// Created by webpigeon on 03/09/22.
+//
+
+#ifndef FGGL_GFX_PALLETS_HPP
+#define FGGL_GFX_PALLETS_HPP
+
+#include "fggl/gfx/paint.hpp"
+
+namespace fggl::gfx::pallets {
+
+	// VGA pallet
+	namespace vga {
+		constexpr math::vec3 WHITE{1.0F, 1.0F, 1.0F};
+		constexpr math::vec3 SILVER{0.75F, 0.75F, 0.75F};
+		constexpr math::vec3 GRAY{0.5F, 0.5F, 0.5F};
+		constexpr math::vec3 BLACK{0.0F, 0.0F, 0.0F};
+		constexpr math::vec3 RED{1.0F, 0.0F, 0.0F};
+		constexpr math::vec3 MAROON{0.5F, 0.0F, 0.0F};
+		constexpr math::vec3 YELLOW{1.0F, 1.0F, 0.0F};
+		constexpr math::vec3 OLIVE{0.5F, 0.5F, 0.0F};
+		constexpr math::vec3 LIME{0.0F, 1.0F, 0.0F};
+		constexpr math::vec3 GREEN{0.0F, 0.5F, 0.0F};
+		constexpr math::vec3 AQUA{0.0F, 1.0F, 1.0F};
+		constexpr math::vec3 TEAL{0.0F, 0.5F, 0.5F};
+		constexpr math::vec3 BLUE{0.0F, 0.0F, 1.0F};
+		constexpr math::vec3 NAVY{0.0F, 0.0F, 0.5F};
+		constexpr math::vec3 FUCHSIA{1.0F, 0.0F, 1.0F};
+		constexpr math::vec3 PURPLE{0.5F, 0.0F, 0.5F};
+	}
+
+	// Tango Free Desktop Pallet
+	namespace tango {
+		constexpr auto BUTTER_0 = rgb(0xFCE94F);
+		constexpr auto BUTTER_1 = rgb(0xEDD400);
+		constexpr auto BUTTER_2 = rgb(0xC4A000);
+
+		constexpr auto ORANGE_0 = rgb(0xFCAF3E);
+		constexpr auto ORANGE_1 = rgb(0xF57900);
+		constexpr auto ORANGE_2 = rgb(0xCE5C00);
+
+		constexpr auto CHOCOLATE_0 = rgb(0xE9B96E);
+		constexpr auto CHOCOLATE_1 = rgb(0xC17D11);
+		constexpr auto CHOCOLATE_2 = rgb(0x8F5902);
+
+		constexpr auto CHAMELEON_0 = rgb(0x8AE234);
+		constexpr auto CHAMELEON_1 = rgb(0x73D216);
+		constexpr auto CHAMELEON_2 = rgb(0x4E9a06);
+
+		constexpr auto SKY_BLUE_0 = rgb(0x729FCF);
+		constexpr auto SKY_BLUE_1 = rgb(0x3456A4);
+		constexpr auto SKY_BLUE_2 = rgb(0x204A87);
+
+		constexpr auto PLUM_0 = rgb(0xAD7FA8);
+		constexpr auto PLUM_1 = rgb(0x75507B);
+		constexpr auto PLUM_2 = rgb(0x5C3566);
+
+		constexpr auto SCARLET_RED_0 = rgb(0xEF2929);
+		constexpr auto SCARLET_RED_1 = rgb(0xCC0000);
+		constexpr auto SCARLET_RED_2 = rgb(0xA40000);
+
+		constexpr auto ALUMINIUM_0 = rgb(0xEEEEEC);
+		constexpr auto ALUMINIUM_1 = rgb(0xD3D7CF);
+		constexpr auto ALUMINIUM_2 = rgb(0xBABDB6);
+		constexpr auto ALUMINIUM_3 = rgb(0x888a85);
+		constexpr auto ALUMINIUM_4 = rgb(0x555753);
+		constexpr auto ALUMINIUM_6 = rgb(0x2e3436);
+	}
+
+	// solarized
+	namespace solarized {
+		// backgrounds (dark)
+		constexpr auto BASE03 = rgb(0x002B36);
+		constexpr auto BASE02 = rgb(0x073642);
+
+		// content tones
+		constexpr auto BASE01 = rgb(0x586E75);
+		constexpr auto BASE00 = rgb(0x657B83);
+		constexpr auto BASE0 = rgb(0x839496);
+		constexpr auto BASE1  = rgb(0X93A1A1);
+
+		// backgrounds (light)
+		constexpr auto BASE2 = rgb(0xEEE8D5);
+		constexpr auto BASE3 = rgb(0xFDF6E3);
+
+		// accent colours
+		constexpr auto YELLOW = rgb(0xB58900);
+		constexpr auto ORANGE = rgb(0xCB4B16);
+		constexpr auto RED = rgb(0xDC322F);
+		constexpr auto MAGENTA = rgb(0xD33682);
+		constexpr auto VIOLET = rgb(0x6C71C4);
+		constexpr auto BLUE = rgb(0x268bd2);
+		constexpr auto CYAN = rgb(0x2AA198);
+		constexpr auto GREEN = rgb(0x859900);
+	}
+
+} // namespace fggl::gfx::pallets
+
+#endif //FGGL_GFX_PALLETS_HPP

include/fggl/gfx/phong.hpp

@@ -20,11 +20,13 @@
 #define FGGL_GFX_PHONG_HPP
 
 #include "fggl/math/types.hpp"
+#include "fggl/util/guid.hpp"
 
 namespace fggl::gfx {
 
 	struct PhongMaterial {
-		constexpr static const char* name = "gfx::material";
+		constexpr static const char *name = "gfx::material";
+		constexpr static const util::GUID guid = util::make_guid("gfx::material");
 		math::vec3 emission;
 		math::vec3 ambient;
 		math::vec3 diffuse;
@@ -32,14 +34,14 @@ namespace fggl::gfx {
 		float shininess;
 	};
 
-	constexpr math::vec3 DEFAULT_EMISSION {0.0F, 0.0F, 0.0F};
-	constexpr math::vec3 DEFAULT_AMBIENT { 0.05F, 0.05F, 0.05F};
-	constexpr math::vec3 DEFAULT_DIFFUSE { 0.5F, 0.5F, 0.5F};
-	constexpr math::vec3 DEFAULT_SPECULAR { 0.7F, 0.7F, 0.7F};
+	constexpr math::vec3 DEFAULT_EMISSION{0.0F, 0.0F, 0.0F};
+	constexpr math::vec3 DEFAULT_AMBIENT{0.05F, 0.05F, 0.05F};
+	constexpr math::vec3 DEFAULT_DIFFUSE{0.5F, 0.5F, 0.5F};
+	constexpr math::vec3 DEFAULT_SPECULAR{0.7F, 0.7F, 0.7F};
 	//constexpr float DEFAULT_SHININESS = .078125F;
 	constexpr float DEFAULT_SHININESS = 16.0F;
 
-	constexpr PhongMaterial DEFAULT_MATERIAL {
+	constexpr PhongMaterial DEFAULT_MATERIAL{
 		DEFAULT_EMISSION,
 		DEFAULT_AMBIENT,
 		DEFAULT_DIFFUSE,
@@ -48,7 +50,29 @@ namespace fggl::gfx {
 	};
 
 	struct Light {
-		constexpr static const char* name = "gfx::light";
+		math::vec3 position;
+		math::vec3 ambient;
+		math::vec3 specular;
+		math::vec3 diffuse;
+	};
+
+	struct DirectionalLight : public Light {
+		constexpr static const char *name = "gfx::phong::directional";
+		constexpr static const util::GUID guid = util::make_guid(name);
+	};
+
+	struct PointLight : public Light {
+		constexpr static const char *name = "gfx::phong::point";
+		constexpr static const util::GUID guid = util::make_guid(name);
+
+		float constant = 1.0F;
+		float linear;
+		float quadratic;
+	};
+
+	struct Light2 {
+		constexpr static const char *name = "gfx::light";
+		constexpr static const util::GUID guid = util::make_guid("gfx::light");
 		bool enabled;
 		bool local;
 		bool spot;

include/fggl/gfx/setup.hpp

@@ -37,10 +37,44 @@ namespace fggl::gfx {
 
 	class WindowGraphics {
 		public:
-			constexpr const static modules::ModuleService service = modules::make_service("fggl::gfx::WindowGraphics");
+			constexpr const static auto service = modules::make_service("fggl::gfx::WindowGraphics");
 
+			WindowGraphics() = default;
+			virtual ~WindowGraphics() = default;
+
+			// no copy
+			WindowGraphics(const WindowGraphics& ) = delete;
+			WindowGraphics& operator=(const WindowGraphics&) = delete;
+
+			// no move
+			WindowGraphics(WindowGraphics&&) = delete;
+			WindowGraphics& operator=(WindowGraphics&&) = delete;
+
+			[[nodiscard]]
 			virtual GraphicsDetails config() const = 0;
-			virtual Graphics* create(display::Window& window) = 0;
+
+			[[nodiscard]]
+			virtual Graphics* create(display::Window &window) = 0;
+
+			inline Graphics* createMain(display::Window& window) {
+				assert( m_graphics == nullptr );
+				m_graphics = create(window);
+				return m_graphics;
+			}
+
+			inline void release() {
+				if ( m_graphics != nullptr ) {
+					delete m_graphics;
+					m_graphics = nullptr;
+				}
+			}
+
+			[[nodiscard]] inline Graphics* get() const {
+				return m_graphics;
+			}
+
+		private:
+			Graphics* m_graphics = nullptr;
 	};
 
 } // namespace fggl::gfx

include/fggl/grid/actions.hpp

+/*
+ * This file is part of FGGL.
+ *
+ * FGGL is free software: you can redistribute it and/or modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any
+ * later version.
+ *
+ * FGGL is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty
+ * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License along with FGGL.
+ * If not, see <https://www.gnu.org/licenses/>.
+ */
+
+//
+// Created by webpigeon on 19/12/22.
+//
+
+#ifndef FGGL_GRID_ACTIONS_H
+#define FGGL_GRID_ACTIONS_H
+
+#include <cstdint>
+#include <variant>
+
+#include "fggl/grid/hexagon.hpp"
+#include "fggl/grid/tokens.hpp"
+
+#include "fggl/util/safety.hpp"
+
+namespace fggl::grid {
+
+	template<typename State, typename Target>
+	class ActionType;
+
+	template<typename State, typename Target>
+	class Action {
+		public:
+			virtual void progress(State* state) = 0;
+			virtual bool isDone() = 0;
+	};
+
+	template<typename State, typename Target>
+	class InstantAction : public Action<State, Target> {
+		public:
+			void progress(State* state) final;
+			bool isDone() final;
+		private:
+			ActionType<State, Target>* m_action;
+			TokenIdentifer m_actor;
+			Target m_target;
+	};
+
+	template<typename State, typename Target>
+	class DurativeAction : public Action<State, Target> {
+		public:
+			void progress(State* state) final;
+			bool isDone() final;
+		private:
+			ActionType<State, Target>* m_action;
+			TokenIdentifer m_actor;
+			Target m_target;
+			uint64_t m_completionRound;
+	};
+
+	template<typename State, typename Target>
+	class ActionType {
+		public:
+			virtual bool canApply(const State* state, TokenIdentifer actor, Target target) = 0;
+			virtual void apply(State* state, TokenIdentifer actor, Target target) = 0;
+
+			virtual Action<State, Target> ground(TokenIdentifer actor, Target target) = 0;
+	};
+
+
+} // namespace fggl::grid
+
+#endif //FGGL_GRID_ACTIONS_H

include/fggl/grid/hexagon.hpp

+/*
+ * This file is part of FGGL.
+ *
+ * FGGL is free software: you can redistribute it and/or modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any
+ * later version.
+ *
+ * FGGL is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty
+ * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License along with FGGL.
+ * If not, see <https://www.gnu.org/licenses/>.
+ */
+
+//
+// Created by webpigeon on 27/11/22.
+//
+
+#ifndef FGGL_GRID_HEX_HPP
+#define FGGL_GRID_HEX_HPP
+
+#include <array>
+#include <vector>
+#include <cmath>
+#include <compare>
+
+#include <fggl/math/fmath.hpp>
+
+/**
+ * Hexagonal Grid Implementation.
+ * Based largely off Amit's incredible grid documentation.
+ */
+namespace fggl::grid {
+
+	enum class HexDirPointy {
+		RIGHT = 0, TOP_RIGHT = 1, TOP_LEFT = 2, LEFT = 3, BOTTOM_LEFT = 4, BOTTOM_RIGHT = 5
+	};
+
+	enum class HexDirFlat {
+		BOTTOM_RIGHT = 0, TOP_RIGHT = 1, TOP = 2, TOP_LEFT = 3, BOTTOM_LEFT = 4, BOTTOM = 5
+	};
+
+	constexpr std::array< std::array<int, 2>, 6> HEX_DIRECTIONS {{
+		{1, 0}, {1, -1}, {0, 1},
+		{-1, 0}, {-1, 1}, {0, 1}
+	}};
+
+	constexpr std::array< std::array<int, 2>, 6> HEX_DIAGONALS {{
+																	{2, -1}, {+1, -2}, {-1, -1},
+																	{-2, 1}, {-1, 2}, {1, 1}
+																}};
+
+	template<typename T>
+	struct HexPointT {
+
+		constexpr HexPointT(T posQ, T posR) : m_pos({posQ, posR}) {}
+		constexpr explicit HexPointT(const std::array<int, 2>& pos) : m_pos(pos[0], pos[1]) {}
+
+		[[nodiscard]]
+		constexpr auto q() const -> T {
+			return m_pos[0];
+		}
+
+		[[nodiscard]]
+		constexpr auto r() const -> T{
+			return m_pos[1];
+		}
+
+		[[nodiscard]]
+		constexpr auto s() const -> T {
+			return -m_pos[0]-m_pos[1];
+		}
+
+		inline HexPointT neighbour(HexDirPointy dir) {
+			auto& offset = HEX_DIRECTIONS.at( (int)dir );
+			return { m_pos[0] + offset[0], m_pos[1] + offset[1] };
+		}
+
+		inline HexPointT neighbour(HexDirFlat dir) {
+			auto& offset = HEX_DIAGONALS.at( (int)dir );
+			return { m_pos[0] + offset[0], m_pos[1] + offset[1] };
+		}
+
+		HexPointT operator+(const HexPointT<T>& other) const {
+			return { m_pos[0] + other.m_pos[0], m_pos[1] + other.m_pos[1] };
+		}
+
+		HexPointT operator-(const HexPointT<T>& other) const {
+			return { m_pos[0] - other.m_pos[0], m_pos[1] - other.m_pos[1] };
+		}
+
+		bool operator==(const HexPointT<T>& other) const {
+			return m_pos[0] == other.m_pos[0] && m_pos[1] == m_pos[1];
+		}
+
+		auto operator<=>(const HexPointT<T>& other) const = default;
+
+		[[nodiscard]]
+		auto distance(const HexPointT& other) const -> T {
+			auto vec = *this - other;
+			return (
+				::abs(vec.q())
+				+ ::abs(vec.q() - vec.r())
+				+ ::abs(vec.r()) / 2
+				);
+		}
+
+		[[nodiscard]]
+		auto hexesInRange(int range) const -> std::vector<HexPointT<T>> {
+			std::vector<HexPointT<T>> results;
+			for ( auto q = -range; q <= range; ++q ) {
+				auto stopCount = std::min(range, -q+range);
+				for ( auto r = std::max(-range, -q-range); r <= stopCount; ++r ) {
+					results.push_back( *this + HexPointT<T>(q, r) );
+				}
+			}
+			return results;
+		}
+
+		private:
+			std::array<T, 2> m_pos;
+	};
+
+	using FloatHex = HexPointT<float>;
+	using IntHex = HexPointT<int>;
+
+	template<typename T>
+	constexpr FloatHex hexLerp(const HexPointT<T>& start, const HexPointT<T>& end, float t) {
+		return {
+			 math::lerp(start.q(), end.q(), t),
+			 math::lerp(start.r(), end.r(), t)
+		};
+	}
+
+	[[nodiscard]]
+	constexpr IntHex round2(const FloatHex& hex) {
+		auto q = std::round( hex.q() );
+		auto r = std::round( hex.r() );
+		auto s = std::round( hex.s() );
+
+		auto qDiff = std::abs( q - hex.q() );
+		auto rDiff = std::abs( r - hex.r() );
+		auto sDiff = std::abs( s - hex.r() );
+
+		if ( qDiff > rDiff && qDiff > sDiff) {
+			q = -r-s;
+		} else if ( rDiff > sDiff ) {
+			r = -q-s;
+		} else {
+			s = -q-r;
+		}
+
+		return {(int)q, (int)r};
+	}
+
+	std::vector<IntHex> lineTo(const IntHex& start, const IntHex& end);
+
+} // namespace fggl::grid
+
+#endif //FGGL_GRID_HEX_HPP

include/fggl/grid/hexgrid.hpp

+/*
+ * This file is part of FGGL.
+ *
+ * FGGL is free software: you can redistribute it and/or modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any
+ * later version.
+ *
+ * FGGL is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty
+ * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License along with FGGL.
+ * If not, see <https://www.gnu.org/licenses/>.
+ */
+
+//
+// Created by webpigeon on 10/12/22.
+//
+
+#ifndef FGGL_GRID_HEXAGON_BOARD_HPP
+#define FGGL_GRID_HEXAGON_BOARD_HPP
+
+#include <map>
+#include <set>
+#include <optional>
+#include <utility>
+#include <variant>
+
+#include "fggl/grid/hexagon.hpp"
+#include "fggl/grid/tokens.hpp"
+#include "fggl/grid/actions.hpp"
+
+#include "fggl/math/types.hpp"
+
+namespace fggl::grid {
+
+	class HexGrid;
+
+	using HexTarget = std::variant<TokenIdentifer, IntHex>;
+	using HexAction = Action<HexGrid, HexTarget>;
+
+	struct MaterialData {
+		std::string name;
+		math::vec3 colour;
+	};
+
+	struct TerrainType {
+		std::shared_ptr<MaterialData> data;
+	};
+
+	struct HexTile {
+		std::shared_ptr<MaterialData> terrain;
+		std::vector< std::shared_ptr<Token> > m_tokens;
+
+		[[nodiscard]]
+		inline std::optional<const MaterialData> data() const {
+			if (terrain == nullptr) {
+				{}
+			}
+
+			return *terrain;
+		}
+	};
+
+
+	class HexGrid {
+		public:
+			inline bool isValidPos(const IntHex& pos) const {
+				return m_tiles.contains(pos);
+			}
+
+			void setTerrain(const IntHex& pos, const TerrainType& terrain) {
+				auto& mapTile = m_tiles[pos];
+				mapTile.terrain = terrain.data;
+			}
+
+			std::optional<const MaterialData> getTerrain(const IntHex& pos) const {
+				const auto itr = m_tiles.find(pos);
+				if ( itr == m_tiles.end() ) {
+					return {};
+				}
+				return itr->second.data();
+			}
+
+			std::set<IntHex> getAllTiles() {
+				std::set<IntHex> posSet;
+				for ( auto& [pos,data] : m_tiles ) {
+					posSet.emplace( pos );
+				}
+				return posSet;
+			}
+
+			std::set<HexTile> tilesInRange(const IntHex& pos, int range) const;
+			std::set<HexTile> neighboursOf(const IntHex& pos) const;
+
+		private:
+			std::map<IntHex, HexTile> m_tiles;
+			std::map<uint64_t, std::shared_ptr<Token>> m_tokens;
+	};
+
+} // namespace fggl::grid
+
+#endif //FGGL_GRID_HEXAGON_BOARD_HPP

include/fggl/grid/layout.hpp

+/*
+ * This file is part of FGGL.
+ *
+ * FGGL is free software: you can redistribute it and/or modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any
+ * later version.
+ *
+ * FGGL is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty
+ * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License along with FGGL.
+ * If not, see <https://www.gnu.org/licenses/>.
+ */
+
+/*
+ * This file is part of FGGL.
+ *
+ * FGGL is free software: you can redistribute it and/or modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any
+ * later version.
+ *
+ * FGGL is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty
+ * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License along with FGGL.
+ * If not, see <https://www.gnu.org/licenses/>.
+ */
+
+//
+// Created by webpigeon on 18/12/22.
+//
+
+#ifndef FGGL_FGGL_GRID_LAYOUT_HPP
+#define FGGL_FGGL_GRID_LAYOUT_HPP
+
+#include "fggl/math/types.hpp"
+#include "fggl/grid/hexagon.hpp"
+
+namespace fggl::grid {
+
+	// factor out the call to sqrt so the matrices can be constexpr
+	constexpr float M_SQRT_3 = 1.73205080757F;
+	constexpr float M_SQRT_3_OVER_2 = M_SQRT_3 / 2.0F;
+
+	constexpr math::mat2 MAT_HEX_POINTY{
+		M_SQRT_3, 0.0F,
+		M_SQRT_3_OVER_2, 3.F / 2.F
+	};
+
+	constexpr math::mat2 MAT_HEX_FLAT{
+		3.F / 2.F, M_SQRT_3_OVER_2,
+		0.0F, M_SQRT_3
+	};
+
+	struct Orientation {
+		math::mat2 m_forward;
+		math::mat2 m_backward;
+		int m_angle;
+
+		inline Orientation(int angle, math::mat2 forward) : m_forward(forward), m_backward(glm::inverse(forward)), m_angle(angle) {};
+
+		static inline Orientation make_pointy() {
+			return { 30, MAT_HEX_POINTY};
+		}
+
+		static inline Orientation make_flat() {
+			return { 0, MAT_HEX_FLAT };
+		}
+	};
+
+
+	constexpr int HEX_SIDES = 6;
+	constexpr int DEG_PER_HEX_SIDE = 360 / HEX_SIDES; // 60 degrees per side
+
+	struct Layout {
+		Orientation m_orientation;
+		math::vec2 m_size;
+		math::vec2 m_origin;
+
+		Layout(Orientation orientation, math::vec2 size, math::vec2 origin) : m_orientation(orientation), m_size(size), m_origin(origin){}
+		Layout(Orientation orientation, float size) : m_orientation(orientation), m_size(size, size), m_origin() {}
+
+		inline void translate(float dx, float dy){
+			m_origin.x += dx;
+			m_origin.y += dy;
+		}
+
+		[[nodiscard]]
+		inline math::vec2 origin() const {
+			return m_origin;
+		}
+
+		[[nodiscard]]
+		inline math::vec2 size() const {
+			return m_size;
+		}
+
+		[[nodiscard]]
+		inline math::vec2 toScreen(IntHex gridPos) const {
+			const math::vec2 hexPoint{gridPos.q(), gridPos.r()};
+			auto point = (m_orientation.m_forward * hexPoint) * m_size;
+			return point + m_origin;
+		}
+
+		[[nodiscard]]
+		inline FloatHex toGrid(math::vec2 screen) const {
+			auto point = (screen - m_origin) / m_size;
+			auto hexPos = m_orientation.m_backward * point;
+			return {hexPos.x, hexPos.y};
+		}
+
+		[[nodiscard]]
+		inline math::vec2 cornerOffset(int corner) const {
+			const int angInc = DEG_PER_HEX_SIDE * corner;
+			const float angle = (angInc + m_orientation.m_angle) * ( fggl::math::PI / 180.0F);
+			return {
+				m_size.x * cosf(angle),
+				m_size.y * sinf(angle)
+			};
+		}
+
+		void paintHex(fggl::gfx::Paint& paint, IntHex pos, math::vec3 colour, math::vec2 offset) const {
+			const auto hexScreenCenter = toScreen(pos);
+
+			gfx::Path2D path({0,0});
+			path.colour(colour);
+
+			for (int i=0; i < HEX_SIDES; ++i) {
+				auto cornerPos =  hexScreenCenter + cornerOffset(i);
+				if ( i == 0) {
+					path.moveTo(cornerPos + offset);
+				} else {
+					path.pathTo(cornerPos + offset);
+				}
+			}
+			paint.stroke(path);
+		}
+
+
+	};
+
+}
+
+#endif //FGGL_FGGL_GRID_LAYOUT_HPP

include/fggl/grid/tokens.hpp

+/*
+ * This file is part of FGGL.
+ *
+ * FGGL is free software: you can redistribute it and/or modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any
+ * later version.
+ *
+ * FGGL is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty
+ * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License along with FGGL.
+ * If not, see <https://www.gnu.org/licenses/>.
+ */
+
+//
+// Created by webpigeon on 19/12/22.
+//
+
+#ifndef FGGL_GRID_TOKENS_HPP
+#define FGGL_GRID_TOKENS_HPP
+
+#include <cstdint>
+#include <map>
+
+#include "fggl/util/guid.hpp"
+
+namespace fggl::grid {
+
+	using TokenIdentifer = fggl::util::OpaqueName<uint64_t, struct Token>;
+
+	class TokenType {
+		public:
+			using PropType = int64_t;
+
+			inline void setProperty(util::GUID name, PropType newVal) {
+				m_properties[name] = newVal;
+			}
+
+			[[nodiscard]]
+			inline PropType getProperty(util::GUID name, PropType unsetVal=0) const {
+				try {
+					return m_properties.at(name);
+				} catch ( std::out_of_range& e ) {
+					return unsetVal;
+				}
+			}
+		private:
+			std::map<util::GUID, PropType> m_properties;
+			std::map<util::GUID, uint64_t> m_cost;
+	};
+
+	class Token {
+		public:
+			Token() = default;
+			explicit Token(std::shared_ptr<TokenType> type) : m_type(std::move(type)) {}
+
+			inline void setProperty(util::GUID name, TokenType::PropType newVal) {
+				m_properties[name] = newVal;
+			}
+
+			[[nodiscard]]
+			inline TokenType::PropType getProperty(util::GUID name, TokenType::PropType unsetVal=0) const {
+				try {
+					auto prop = m_properties.at(name);
+					return prop;
+				} catch ( std::out_of_range& ex) {
+					return m_type->getProperty(name, unsetVal);
+				}
+			}
+
+			[[nodiscard]]
+			inline TokenType::PropType getPropertyDirect(util::GUID name, TokenType::PropType unsetVal=0) const {
+				try {
+					auto prop = m_properties.at(name);
+					return prop;
+				} catch ( std::out_of_range& ex) {
+					return unsetVal;
+				}
+			}
+		private:
+			TokenIdentifer m_id;
+			std::shared_ptr<TokenType> m_type;
+			std::map<util::GUID, TokenType::PropType> m_properties;
+	};
+
+} // namespace fggl::grid
+
+#endif //FGGL_GRID_TOKENS_HPP

include/fggl/gui/containers.hpp

@@ -29,25 +29,48 @@ namespace fggl::gui {
 			}
 
 			void add(std::unique_ptr<Widget> widget);
+
 			virtual inline void layout() {}
 
 			bool contains(const math::vec2 &point) override;
 			Widget *getChildAt(const math::vec2 &point) override;
+
+			inline void update(float deltaTime) override {
+				for (auto& child : m_children) {
+					child->update(deltaTime);
+				}
+			}
 			void render(gfx::Paint &paint) override;
 
+			void onMouseOver(math::vec2 pos) override;
+
+			void onEnter(math::vec2i pos) override;
+			void onExit(math::vec2i pos) override;
+
 		private:
 			bool m_dirty;
+			Widget* m_hovered = nullptr;
 
 		protected:
 			std::vector<std::unique_ptr<Widget>> m_children;
 	};
 
+	class GridBox : public Container {
+		public:
+			GridBox(uint32_t rows, uint32_t cols, uint32_t padX = 8, uint32_t padY = 8);
+			void layout() override;
+		private:
+			uint32_t m_rows;
+			uint32_t m_cols;
+			math::vec2i m_padding;
+	};
+
 	class Panel : public Container {
 		public:
 			Panel() = default;
 			~Panel() = default;
 
-			void render(gfx::Paint& paint) override;
+			void render(gfx::Paint &paint) override;
 
 	};
 

include/fggl/gui/fonts.hpp

@@ -30,7 +30,10 @@
 #include <ft2build.h>
 #include FT_FREETYPE_H
 
+
 namespace fggl::gui {
+	constexpr const char* DEFAULT_FONT_NAME = "LiberationSans-Regular.ttf";
+
 
 	struct GlyphMetrics {
 		math::vec2 size;
@@ -43,45 +46,45 @@ namespace fggl::gui {
 			explicit FontFace(FT_Face face);
 			~FontFace();
 
-			FontFace(const FontFace&) = delete;
-			FontFace(FontFace&&) = delete;
-			FontFace& operator=(const FontFace&) = delete;
-			FontFace& operator=(FontFace&&) = delete;
+			FontFace(const FontFace &) = delete;
+			FontFace(FontFace &&) = delete;
+			FontFace &operator=(const FontFace &) = delete;
+			FontFace &operator=(FontFace &&) = delete;
 
-			inline GlyphMetrics& metrics(char letter){
+			inline GlyphMetrics &metrics(char letter) {
 				auto itr = m_metrics.find(letter);
-				if ( itr == m_metrics.end() ) {
+				if (itr == m_metrics.end()) {
 					return populateMetrics(letter);
 				}
 				return itr->second;
 			}
 
-			math::vec2 stringSize(const std::string& text);
-			void texture(char letter, int& width, int& height, void** buff);
+			math::vec2 stringSize(const std::string &text);
+			void texture(char letter, int &width, int &height, unsigned char **buff);
 
 		private:
 			FT_Face m_face;
 			std::map<char, GlyphMetrics> m_metrics;
 
-			GlyphMetrics& populateMetrics(char letter);
+			GlyphMetrics &populateMetrics(char letter);
 	};
 
 	class FontLibrary {
 		public:
-			constexpr static const modules::ModuleService service = modules::make_service("fggl::gui::font");
+			constexpr static const auto service = modules::make_service("fggl::gui::font");
 
-			FontLibrary(data::Storage* storage);
+			explicit FontLibrary(data::Storage *storage);
 			~FontLibrary();
 
 			// copy and moving not needed
-			FontLibrary(const FontLibrary&) = delete;
-			FontLibrary(FontLibrary&&) = delete;
-			FontLibrary& operator=(const FontLibrary&) = delete;
-			FontLibrary& operator=(FontLibrary&&) = delete;
+			FontLibrary(const FontLibrary &) = delete;
+			FontLibrary(FontLibrary &&) = delete;
+			FontLibrary &operator=(const FontLibrary &) = delete;
+			FontLibrary &operator=(FontLibrary &&) = delete;
 
-			inline std::shared_ptr<FontFace> getFont(const std::string& name) {
+			inline std::shared_ptr<FontFace> getFont(const std::string &name) {
 				auto fontItr = m_cache.find(name);
-				if ( fontItr != m_cache.end() ) {
+				if (fontItr != m_cache.end()) {
 					return fontItr->second;
 				}
 
@@ -89,7 +92,7 @@ namespace fggl::gui {
 				auto path = m_storage->resolvePath(data::StorageType::Data, name);
 
 				FT_Face face;
-				if ( FT_New_Face(m_context, path.string().c_str(), 0, &face) ) {
+				if (FT_New_Face(m_context, path.string().c_str(), 0, &face)) {
 					return nullptr;
 				}
 				FT_Set_Pixel_Sizes(face, 0, 18);
@@ -100,10 +103,18 @@ namespace fggl::gui {
 				return ptr;
 			}
 
+			inline void setDefaultFont(const std::string& name) {
+				m_defaultFont = getFont(name);
+			}
+
+			inline std::shared_ptr<FontFace> getDefaultFont() const {
+				return m_defaultFont;
+			}
 		private:
 			FT_Library m_context;
-			data::Storage* m_storage;
+			data::Storage *m_storage;
 			std::map<const std::string, std::shared_ptr<FontFace>> m_cache;
+			std::shared_ptr<FontFace> m_defaultFont;
 	};
 
 } // nmespace fggl::gui

include/fggl/gui/model/parser.hpp

+/*
+ * This file is part of FGGL.
+ *
+ * FGGL is free software: you can redistribute it and/or modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any
+ * later version.
+ *
+ * FGGL is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty
+ * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License along with FGGL.
+ * If not, see <https://www.gnu.org/licenses/>.
+ */
+
+//
+// Created by webpigeon on 04/03/23.
+//
+
+#ifndef FGGL_GUI_MODEL_PARSER_HPP
+#define FGGL_GUI_MODEL_PARSER_HPP
+
+#include <fggl/gui/model/structure.hpp>
+#include <fggl/gui/fonts.hpp>
+#include <fggl/modules/module.hpp>
+
+namespace fggl::gui::model {
+
+	constexpr auto WIDGET_FACTORY_SERVICE = modules::make_service("gui::WidgetService");
+
+	class WidgetFactory {
+		public:
+			constexpr static auto service = WIDGET_FACTORY_SERVICE;
+			inline WidgetFactory(FontLibrary* lib) : m_fontLibrary(lib) {}
+
+			inline Widget* build(std::string templateName) {
+				return new Widget(m_templates.at(templateName).get());
+			}
+
+			inline Widget* buildEmpty() {
+				return new Widget(m_fontLibrary);
+			}
+
+			inline void push(std::string name, const Widget&& definition) {
+				m_templates.emplace(name, std::make_unique<Widget>(definition));
+			}
+
+			Widget* getTemplate(const std::string& name) {
+				auto itr = m_templates.find(name);
+				if ( itr == m_templates.end() ){
+					return nullptr;
+				}
+				return itr->second.get();
+			}
+
+		private:
+			std::map<std::string, std::unique_ptr<Widget>> m_templates;
+			FontLibrary* m_fontLibrary;
+	};
+
+	Widget* parseFile(WidgetFactory& factory, const std::string& path);
+
+} // namespace fggl::gui::model
+
+#endif //FGGL_GUI_MODEL_PARSER_HPP

include/fggl/gui/model/structure.hpp

+/*
+ * This file is part of FGGL.
+ *
+ * FGGL is free software: you can redistribute it and/or modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any
+ * later version.
+ *
+ * FGGL is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty
+ * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License along with FGGL.
+ * If not, see <https://www.gnu.org/licenses/>.
+ */
+
+//
+// Created by webpigeon on 04/03/23.
+//
+
+#ifndef FGGL_GUI_MODEL_STRUCTURE_HPP
+#define FGGL_GUI_MODEL_STRUCTURE_HPP
+
+#include <map>
+#include <variant>
+#include <vector>
+#include <string>
+#include <optional>
+
+#include <fggl/math/types.hpp>
+#include <fggl/gui/fonts.hpp>
+
+namespace fggl::gui::model {
+
+	using AttrKey = std::string;
+	using AttrValue = std::variant<bool, int, float, std::string, math::vec2, math::vec3>;
+
+	constexpr float UNDEFINED = INFINITY;
+	constexpr math::vec2 UNDEFINED_SIZE{INFINITY, INFINITY};
+
+	class Widget {
+		public:
+			using ChildItr = std::vector<Widget>::iterator;
+			using ChildItrConst = std::vector<Widget>::const_iterator;
+
+			inline Widget(FontLibrary* library) :
+				m_parent(nullptr),
+				m_children(),
+				m_fontLibrary(library),
+				m_attrs(),
+				m_cachedSize(),
+				m_dirty(true) {
+			}
+
+			explicit inline Widget(Widget* parent) :
+				m_parent(parent),
+				m_children(),
+				m_fontLibrary(parent->m_fontLibrary),
+				m_attrs(),
+				m_cachedSize(),
+				m_dirty(true) {
+			}
+
+			inline bool isRoot() const {
+				return m_parent == nullptr;
+			}
+
+			inline bool isLeaf() const {
+				return m_children.empty();
+			}
+
+			inline bool hasAttr(const AttrKey& key) const {
+				return m_attrs.contains(key);
+			}
+
+			inline std::map<AttrKey, AttrValue> attrs() {
+				return m_attrs;
+			}
+
+			template<typename type>
+			inline type get(const AttrKey& key) const {
+				return std::get<type>(m_attrs.at(key));
+			}
+
+			template<typename type>
+			type get_or_default(const AttrKey& key) const {
+				auto itr = m_attrs.find(key);
+				if ( itr == m_attrs.end() ) {
+					return type();
+				} else {
+					return std::get<type>(itr->second);
+				}
+			}
+
+			template<typename type>
+			inline void set(const AttrKey& key, type value) {
+				m_attrs[key] = value;
+			}
+
+			inline void addChild(const Widget& element) {
+				auto childItr = m_children.insert( m_children.cend(), element );
+				childItr->m_parent = this;
+			}
+
+			inline ChildItr begin() {
+				return m_children.begin();
+			}
+
+			inline ChildItrConst begin() const noexcept {
+				return m_children.begin();
+			}
+
+			inline ChildItrConst cbegin() const noexcept {
+				return m_children.cbegin();
+			}
+
+			inline ChildItr end() {
+				return m_children.end();
+			}
+
+			inline ChildItrConst end() const {
+				return m_children.end();
+			}
+
+			inline ChildItrConst cend() const {
+				return m_children.cend();
+			}
+
+			inline std::optional<math::vec2> preferredSize() {
+				calcPrefSize(m_fontLibrary->getDefaultFont());
+				return m_cachedSize;
+			}
+
+		private:
+			Widget *m_parent;
+			std::vector<Widget> m_children;
+			FontLibrary* m_fontLibrary;
+			std::map< AttrKey, AttrValue > m_attrs;
+			math::vec2 m_cachedSize;
+			bool m_dirty;
+
+			void calcPrefSize(std::shared_ptr<FontFace> face);
+	};
+
+	void attr_box_set(Widget& widget, const AttrKey& key, auto top, auto right, auto bottom, auto left) {
+		widget.set(key + "::top", top);
+		widget.set(key + "::right", right);
+		widget.set(key + "::bottom", bottom);
+		widget.set(key + "::left", left);
+	}
+
+	inline void attr_box_set(Widget& widget, const AttrKey& key, auto vert, auto horz) {
+		attr_box_set(widget, key, vert, horz, vert, horz);
+	}
+
+	inline void attr_box_set(Widget& widget, const AttrKey& key, auto value) {
+		attr_box_set(widget, key, value, value, value, value);
+	}
+
+
+} // namespace fggl::gui::model
+
+#endif //FGGL_GUI_MODEL_STRUCTURE_HPP

include/fggl/gui/module.hpp

@@ -20,30 +20,55 @@
 #define FGGL_GUI_MODULE_HPP
 
 #include "fggl/gui/fonts.hpp"
+#include "fggl/gui/model/parser.hpp"
+
 #include "fggl/data/module.hpp"
+#include "fggl/assets/packed/module.hpp"
 
 namespace fggl::gui {
 
+	constexpr auto MIME_TTF = assets::from_mime("font/ttf");
+	constexpr auto ASSET_FONT_TTF = assets::make_asset_type("font/ttf");
+
+	static assets::AssetTypeID is_font(std::filesystem::path path) {
+		if ( path.extension() == ".ttf" ){
+			return ASSET_FONT_TTF;
+		}
+		return assets::INVALID_ASSET_TYPE;
+	}
+
 	struct FreeType {
-		constexpr static const char* name = "fggl::gui::FreeType";
-		constexpr static const std::array<modules::ModuleService, 1> provides = {
-			FontLibrary::service
+		constexpr static const char *name = "fggl::gui::FreeType";
+		constexpr static const std::array<modules::ServiceName, 2> provides = {
+			FontLibrary::service,
+			model::WidgetFactory::service
 		};
-		constexpr static const std::array<modules::ModuleService, 1> depends = {
-			data::Storage::service
+		constexpr static const std::array<modules::ServiceName, 2> depends = {
+			data::Storage::service,
+			assets::CheckinAdapted::service
 		};
-		static const modules::ServiceFactory factory;
+		static bool factory(modules::ServiceName name, modules::Services &serviceManager);
 	};
 
-	bool freetype_factory(modules::ModuleService service, modules::Services& services) {
-		if ( service == FontLibrary::service ) {
+	bool FreeType::factory(modules::ServiceName service, modules::Services &services) {
+		if (service == FontLibrary::service) {
 			auto storage = services.get<data::Storage>();
-			services.create< FontLibrary >(storage);
+			services.create<FontLibrary>(storage);
+
+			auto* checkin = services.get<assets::CheckinAdapted>();
+			checkin->setLoader( MIME_TTF, assets::NEEDS_CHECKIN, is_font );
+
 			return true;
 		}
+
+		if ( service == model::WidgetFactory::service ) {
+			auto fonts = services.get<FontLibrary>();
+			services.create<model::WidgetFactory>(fonts);
+			return true;
+		}
+
 		return false;
 	}
-	const modules::ServiceFactory FreeType::factory = freetype_factory;
 }
 
 #endif //FGGL_GUI_MODULE_HPP

include/fggl/gui/renderer/renderer.hpp

+/*
+ * This file is part of FGGL.
+ *
+ * FGGL is free software: you can redistribute it and/or modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any
+ * later version.
+ *
+ * FGGL is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty
+ * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public License along with FGGL.
+ * If not, see <https://www.gnu.org/licenses/>.
+ */
+
+//
+// Created by webpigeon on 04/03/23.
+//
+
+#ifndef FGGL_GUI_RENDERER_RENDERER_HPP
+#define FGGL_GUI_RENDERER_RENDERER_HPP
+
+#include <fggl/gui/model/structure.hpp>
+#include <fggl/gfx/paint.hpp>
+
+namespace fggl::gui::renderer {
+
+	struct Box {
+		float top;
+		float right;
+		float bottom;
+		float left;
+
+		inline Box trim(Box border) const {
+			return {
+				top + border.top,
+				right - border.right,
+				bottom - border.bottom,
+				left + border.left
+			};
+		}
+
+		inline Box expand(Box border) const {
+			return {
+				top - border.top,
+				right + border.right,
+				bottom + border.bottom,
+				left - border.left
+			};
+		}
+
+		inline float width() const {
+			return right - left;
+		}
+
+		inline float height() const {
+			return bottom - top;
+		}
+	};
+
+	inline math::vec2 get_vec2(const model::Widget& root, const std::string& name) {
+		if ( !root.hasAttr(name) ) {
+			return {};
+		}
+		return root.get<math::vec2>(name);
+	}
+
+	inline math::vec3 get_vec3_rgb(const model::Widget& root, const std::string& name) {
+		if ( !root.hasAttr(name) ) {
+			return {};
+		}
+		return root.get<math::vec3>(name);
+	}
+
+	inline Box get_box(const model::Widget& root, const std::string& name) {
+		return {
+			root.get_or_default<float>(name + "::top"),
+			root.get_or_default<float>(name + "::right"),
+			root.get_or_default<float>(name + "::bottom"),
+			root.get_or_default<float>(name + "::left")
+		};
+	}
+
+	inline Box getBounds(math::vec2 pos, math::vec2 size) {
+		return {
+			pos.y,
+			pos.x + size.x,
+			pos.y + size.y,
+			pos.x
+		};
+	}
+
+	void draw_box(gfx::Path2D &path, glm::vec2 topLeft, glm::vec2 bottomRight);
+
+	void draw_border_patch(gfx::Paint& paint, Box& bounds, Box& size, math::vec3 colour);
+
+	void draw_border_solid(gfx::Paint& paint, Box& bounds, Box& size, math::vec3 colour);
+
+	void draw_background_solid(gfx::Paint& paint, Box& bounds, math::vec3 colour);
+
+	void layout(model::Widget& root);
+
+	void visit(const model::Widget& root, gfx::Paint& paint, Box offset = {0.0F, 1024.0F, 768.0F, 0.0F});
+
+} // namespace fggl::gui::renderer
+
+#endif //FGGL_GUI_RENDERER_RENDERER_HPP

include/fggl/gui/widget.hpp

@@ -22,8 +22,17 @@
 
 namespace fggl::gui {
 
-	constexpr float RGB_MAX_VAL = 255.0F;
-	constexpr math::vec3 rgbToNormal(char red, char green, char blue) {
+	constexpr uint8_t RGB_MAX_VAL = 255;
+
+	/**
+	 * Convert an RGB value using 0-255 to a 0-1 value.
+	 *
+	 * @param red red component
+	 * @param green green component
+	 * @param blue blue component
+	 * @return the normalized RGB value
+	 */
+	constexpr math::vec3 rgbToNormal(uint8_t red, uint8_t green, uint8_t blue) {
 		return {red / RGB_MAX_VAL, green / RGB_MAX_VAL, blue / RGB_MAX_VAL};
 	}
 
@@ -36,53 +45,55 @@ namespace fggl::gui {
 	 * @return RGB, in the range 0,1 for each component
 	 */
 	inline math::vec3 HSVtoNormal(float hue, float saturation, float value) {
-		assert( 0 < hue && hue <= 360);
-		assert( 0 < saturation && saturation <= 1);
-		assert( 0 < value && value <= 1);
+		assert(0 < hue && hue <= 360);
+		assert(0 < saturation && saturation <= 1);
+		assert(0 < value && value <= 1);
 
 		const float chroma = value * saturation;
-		const float x = chroma * (1 - fabs( fmod(hue / 60.0F, 2) - 1) );
-		math::vec3 tmp{0,0,0};
-		if ( 0 <= hue && hue < 60 ) {
-			tmp = {chroma,x,0};
-		} else if ( 60 <= hue && hue < 120 ) {
+		const float x = chroma * (1 - std::fabs(std::fmod(hue / 60.0F, 2.0F) - 1.0F));
+		math::vec3 tmp{0, 0, 0};
+		if (0 <= hue && hue < 60) {
+			tmp = {chroma, x, 0};
+		} else if (60 <= hue && hue < 120) {
 			tmp = {x, chroma, 0};
-		} else if (120 <= hue && hue < 180 ) {
+		} else if (120 <= hue && hue < 180) {
 			tmp = {0, chroma, x};
-		} else if ( 180 <= hue && hue < 240 ) {
+		} else if (180 <= hue && hue < 240) {
 			tmp = {0, x, chroma};
-		} else if ( 240 <= hue && hue < 300) {
+		} else if (240 <= hue && hue < 300) {
 			tmp = {x, 0, chroma};
-		} else if ( 300 <= hue && hue < 360) {
+		} else if (300 <= hue && hue < 360) {
 			tmp = {chroma, 0, x};
 		}
 		return tmp + (value - chroma);
 	}
 
-	void draw_box( gfx::Path2D& path, math::vec2 topLeft, math::vec2 bottomRight);
-	void draw_progress( gfx::Path2D& path, math::vec2 topLeft, math::vec2 size, float value);
-	void draw_slider( gfx::Path2D& path, math::vec2 topLeft, math::vec2 size, float value);
-	void draw_button( gfx::Path2D& path, math::vec2 topLeft, math::vec2 size, bool active, bool pressed);
+	void draw_box(gfx::Path2D &path, math::vec2 topLeft, math::vec2 bottomRight);
+	void draw_progress(gfx::Path2D &path, math::vec2 topLeft, math::vec2 size, float value);
+	void draw_slider(gfx::Path2D &path, math::vec2 topLeft, math::vec2 size, float value);
+	void draw_button(gfx::Path2D &path, math::vec2 topLeft, math::vec2 size, bool active, bool pressed);
 
 	struct Bounds2D {
 		math::vec2 topLeft;
 		math::vec2 size;
 
 		Bounds2D() = default;
+
 		inline Bounds2D(math::vec2 pos, math::vec2 a_size) : topLeft(pos), size(a_size) {}
 
 		inline bool contains(math::vec2 point) {
-			return ! ( (point.x > topLeft.x + size.x) ||
-			           (point.x < topLeft.x ) ||
-					   (point.y > topLeft.y + size.y) ||
-				       (point.y < topLeft.y)
-					   );
+			return !((point.x > topLeft.x + size.x) ||
+				(point.x < topLeft.x) ||
+				(point.y > topLeft.y + size.y) ||
+				(point.y < topLeft.y)
+			);
 		}
 	};
 
 	class Widget {
 		public:
 			Widget() = default;
+
 			inline Widget(math::vec2 pos, math::vec2 size) : m_bounds(pos, size) {}
 
 			virtual ~Widget() = default;
@@ -104,28 +115,43 @@ namespace fggl::gui {
 				return m_bounds.size;
 			}
 
-			virtual inline bool contains(const math::vec2 &point){
+			virtual inline bool contains(const math::vec2 &point) {
 				return m_bounds.contains(point);
 			};
 
 			virtual inline Widget *getChildAt(const math::vec2 &point) {
-				if ( !contains(point) ) {
+				if (!contains(point)) {
 					return nullptr;
 				}
 				return this;
 			}
 
+			virtual void update(float deltaTime) = 0;
 			virtual void render(gfx::Paint &paint) = 0;
+
+			inline virtual void layout() {};
+
 			inline virtual void activate() {};
 
-			inline virtual void onEnter() {}
-			inline virtual void onExit() {}
+			inline virtual void onMouseOver(math::vec2 pos) {
+				if ( !m_hover ) {
+					onEnter(pos);
+				}
+			}
+			inline virtual void onEnter(math::vec2i /*pos*/) {
+				m_hover = true;
+			}
+			inline virtual void onExit(math::vec2i /*pos*/) {
+				m_hover = false;
+			}
+
+		protected:
+			bool m_hover = false;
 
 		private:
 			Bounds2D m_bounds;
 	};
 
-
 }; //namespace fggl::gui
 
 #endif

include/fggl/gui/widgets.hpp

@@ -35,8 +35,8 @@ namespace fggl::gui {
 			void render(gfx::Paint &paint) override {
 				auto pos = topLeft();
 				auto size2 = size();
-				math::vec2 baseLine{pos.x + 10, pos.y + size2.y/2 + 5};
-				paint.text(m_value,baseLine);
+				math::vec2 baseLine{pos.x + 10, pos.y + size2.y / 2 + 5};
+				paint.text(m_value, baseLine);
 			}
 
 			inline void font(std::shared_ptr<FontFace> font) {
@@ -44,7 +44,7 @@ namespace fggl::gui {
 				m_needsLayout = true;
 			}
 
-			inline void text(const std::string& value) {
+			inline void text(const std::string &value) {
 				m_value = value;
 				m_needsLayout = true;
 			}
@@ -54,13 +54,14 @@ namespace fggl::gui {
 			}
 
 			math::vec2 naturalSize() {
-				if ( m_needsLayout ) {
+				if (m_needsLayout) {
 					layout();
 				}
 				return m_naturalSize;
 			}
 
-			void layout();
+			void layout() override;
+			inline void update(float /*deltaTime*/) override {}
 
 		private:
 			std::shared_ptr<gui::FontFace> m_font;
@@ -77,24 +78,23 @@ namespace fggl::gui {
 			void render(gfx::Paint &paint) override;
 
 			void activate() override;
-			void onEnter() override;
-			void onExit() override;
-
-			void label(const std::string& value);
+			void label(const std::string &value);
 
 			[[nodiscard]]
 			std::string label() const;
 
+			inline void update(float /*deltaTime*/) override {}
+
 			void addCallback(Callback callback);
+			void layout() override;
+
 		private:
 			Label m_label;
 			std::string m_value;
 			std::vector<Callback> m_callbacks;
-			bool m_hover;
 			bool m_active;
 	};
 
-
 	class Toggle : public Button {
 		public:
 			Toggle() = default;

include/fggl/input/basics.hpp

@@ -22,10 +22,10 @@
 namespace fggl::input {
 
 	enum class InputType {
-			BUTTON, // 0 || 1
-			UNIDIRECTIONAL_AXIS, // [0,1], absolute
-			BIDIRECTIONAL_AXIS, // [-1, 1], absolute
-			RELATIVE_AXIS // [-1, 1], relative
+		BUTTON, // 0 || 1
+		UNIDIRECTIONAL_AXIS, // [0,1], absolute
+		BIDIRECTIONAL_AXIS, // [-1, 1], absolute
+		RELATIVE_AXIS // [-1, 1], relative
 	};
 
 } // namespace fggl::input

include/fggl/input/camera_input.hpp

@@ -19,8 +19,8 @@
 #ifndef FGGL_INPUT_CAMERA_INPUT_HPP
 #define FGGL_INPUT_CAMERA_INPUT_HPP
 
-#include <fggl/ecs3/ecs.hpp>
-#include <fggl/math/types.hpp>
+#include "fggl/entity/entity.hpp"
+#include "fggl/math/types.hpp"
 
 namespace fggl::input {
 
@@ -38,7 +38,11 @@ namespace fggl::input {
 		scancode_t rotate_ccw;
 	};
 
-	void process_scroll(fggl::ecs3::World &ecs, const Input &input, fggl::ecs::entity_t cam, float minZoom = 10.0F, float maxZoom = 50.0F);
+	void process_scroll(entity::EntityManager &ecs,
+						const Input &input,
+						entity::EntityID cam,
+						float minZoom = 10.0F,
+						float maxZoom = 50.0F);
 
 	/**
 	 * Process the camera based on rotation around a fixed point.
@@ -47,7 +51,7 @@ namespace fggl::input {
 	 * @param input the input module to read the mouse location from
 	 * @param cam the ID of the camera entity
 	 */
-	void process_arcball(fggl::ecs3::World &ecs, const Input &input, fggl::ecs::entity_t cam);
+	void process_arcball(entity::EntityManager &ecs, const Input &input, entity::EntityID cam);
 
 	/**
 	 * Process free (floating) camera movement.
@@ -56,7 +60,7 @@ namespace fggl::input {
 	 * @param input the input module to read the mouse location from
 	 * @param cam the ID of the camera entity
 	 */
-	void process_freecam(fggl::ecs3::World &ecs, const Input &input, fggl::ecs::entity_t cam);
+	void process_freecam(entity::EntityManager &ecs, const Input &input, entity::EntityID cam);
 
 	/**
 	 * Input processing for moving the camera when the mouse is close to the edge of the screen.
@@ -69,7 +73,7 @@ namespace fggl::input {
 	 * @param input the input module to read the mouse location from
 	 * @param cam the ID of the camera entity
 	 */
-	void process_edgescroll(fggl::ecs3::World &ecs, const Input &input, fggl::ecs::entity_t cam);
+	void process_edgescroll(entity::EntityManager &ecs, const Input &input, entity::EntityID cam);
 
 }
 

include/fggl/input/gamepad.hpp

@@ -192,7 +192,7 @@ namespace fggl::input {
 				return m_current[id].buttons[(int) btn] != m_previous[id].buttons[(int) btn];
 			}
 
-			inline void frame(float dt) {
+			inline void frame(float /*dt*/) {
 				m_previous = m_current;
 			}