Adam Macdonald
a8d8b9b9ab
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77 lines
1.8 KiB
C++
77 lines
1.8 KiB
C++
#pragma once
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#include <GLFW/glfw3.h>
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#include <glm/vec2.hpp>
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#include <array>
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#include <cstddef>
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#include <cstdint>
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#include <functional>
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#include <vector>
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namespace kuiper
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{
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using action_fn_t = std::function<void()>;
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enum action_type : std::uint8_t {
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none = 0,
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escape,
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};
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constexpr std::size_t max_actions = 1 << (sizeof(action_type) * 8);
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struct key_state {
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int state = GLFW_RELEASE;
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};
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struct mouse_state {
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glm::vec2 pos;
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glm::vec2 delta_pos;
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};
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class input_system {
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public:
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input_system() {
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// Default engine action keymappings
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m_action_keymap[GLFW_KEY_ESCAPE] = action_type::escape;
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return;
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}
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~input_system() = default;
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// Keyboard
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void set_key_state(int key, int state);
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int get_key_state(int key) const;
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bool is_key_pressed(int key) const;
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bool is_key_released(int key) const;
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bool is_key_held(int key) const;
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bool is_key_down(int key) const;
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// Mouse
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void set_mouse_pos(const glm::vec2& pos);
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void set_mouse_delta(const glm::vec2& pos);
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/// Get mouse position (top-left corner is the origin)
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glm::vec2 get_mouse_pos() const;
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/// Get change in mouse position since last frame (top-left corner is the origin)
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glm::vec2 get_mouse_delta() const;
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// Actions
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// TODO: user can add a new custom action of their own
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void subscribe_to_action(action_type type, const action_fn_t& callback);
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private:
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std::array<key_state, GLFW_KEY_LAST> m_key_states {};
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std::array<action_type, GLFW_KEY_LAST> m_action_keymap {};
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std::array<std::vector<action_fn_t>, max_actions> m_action_listeners {};
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mouse_state m_mouse_state {};
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glm::vec2 m_old_mouse_pos {};
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};
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} // namespace kuiper
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