60 lines
No EOL
1.4 KiB
C++
60 lines
No EOL
1.4 KiB
C++
module;
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#include <array>
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#include <cassert>
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#include <iostream>
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#include <utility>
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export module VUI:Input;
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import :InputCodes;
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import :Keys;
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namespace VUI {
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struct WindowManager;
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struct Window;
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constexpr uint32_t DownMask = 1;
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constexpr uint32_t RepeatMask = 1 << 2;
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export inline std::array<uint8_t, std::to_underlying(KeyCodes::KEYLAST)> s_Keys{};
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export inline constexpr std::array<KeyCodes, Keys> InputKeys = InitKeys();
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export struct Input {
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static bool IsKeyDown(const KeyCodes key) {
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return s_Keys[std::to_underlying(key)] & DownMask;
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}
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static bool IsKeyPressed(const KeyCodes key) {
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const auto value = s_Keys[std::to_underlying(key)];
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return value & DownMask && !(value & RepeatMask);
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}
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static bool IsKeyRepeat(const KeyCodes key) {
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return s_Keys[std::to_underlying(key)] & RepeatMask;
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}
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private:
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static void UpdateKey(uint32_t key, bool isDown);
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static void PostFrameUpdate();
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friend WindowManager;
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friend Window;
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};
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void Input::UpdateKey(const uint32_t key, const bool isDown) {
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assert(key < InputKeys.size() && "Keycode out of range");
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const uint8_t keyCode = std::to_underlying(InputKeys[key]);
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uint8_t value = s_Keys[keyCode];
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if (isDown) {
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value |= DownMask;
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} else {
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value &= ~(DownMask | RepeatMask);
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}
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s_Keys[keyCode] = value;
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}
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void Input::PostFrameUpdate() {
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for (uint8_t &s_key : s_Keys)
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s_key |= (s_key & DownMask) ? RepeatMask : 0;
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}
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} // namespace VUI
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