Reorganize source files into logical subdirectories

Co-authored-by: Hirek193 <23196899+Hirek193@users.noreply.github.com>

input/keyboardinput.h

@@ -0,0 +1,115 @@
+/*
+This Source Code Form is subject to the
+terms of the Mozilla Public License, v.
+2.0. If a copy of the MPL was not
+distributed with this file, You can
+obtain one at
+http://mozilla.org/MPL/2.0/.
+*/
+
+#pragma once
+
+#include <unordered_map>
+#include <array>
+#include "command.h"
+
+namespace input {
+
+extern std::array<char, GLFW_KEY_LAST + 1> keys;
+extern bool key_alt;
+extern bool key_ctrl;
+extern bool key_shift;
+
+}
+
+namespace ui {
+class keymapper_panel;
+}
+
+class keyboard_input {
+    friend class ui::keymapper_panel;
+
+public:
+// types
+    using bindingsetup_sequence = std::map<user_command, std::tuple<int, std::string>>;
+
+	enum keymodifier : int {
+
+		shift   = 0x10000,
+		control = 0x20000
+	};
+
+// constructors
+    keyboard_input() = default;
+
+// destructor
+    virtual ~keyboard_input() = default;
+
+// methods
+    virtual
+    bool
+        init() { return true; }
+    bool
+        key( int const Key, int const Action );
+    int
+        key( int const Key ) const;
+    void
+        poll();
+    inline
+    user_command const
+        command() const {
+            return m_command; }
+    bindingsetup_sequence&
+        bindings() {
+            return m_bindingsetups; }
+    int
+        binding( user_command const Command ) const;
+    std::string
+        binding_hint( user_command const Command ) const;
+    void
+        dump_bindings();
+
+// members
+	static std::unordered_map<int, std::string> keytonamemap;
+
+protected:
+// methods
+    virtual
+    void
+        default_bindings() = 0;
+    bool
+        recall_bindings();
+    void
+        bind();
+
+// members
+	bindingsetup_sequence m_bindingsetups;
+
+private:
+// types
+    using usercommand_map = std::unordered_map<int, user_command>;
+
+    struct bindings_cache {
+
+        int forward { -1 };
+        int back { -1 };
+        int left { -1 };
+        int right { -1 };
+        int up { -1 };
+        int down { -1 };
+    };
+
+// methods
+    bool
+        is_movement_key( int const Key ) const;
+
+// members
+    user_command m_command { user_command::none }; // last, if any, issued command
+    usercommand_map m_bindings;
+    command_relay m_relay;
+    bindings_cache m_bindingscache;
+    glm::vec2 m_movementhorizontal { 0.f };
+    float m_movementvertical { 0.f };
+};
+
+//---------------------------------------------------------------------------