181 lines
3.0 KiB
C++
181 lines
3.0 KiB
C++
#pragma once
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#include <cstddef>
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#include <glm/vec2.hpp>
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#include <glm/vec3.hpp>
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#include <map>
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namespace commons::protocol
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{
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enum class Type
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{
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DRAW_RECTANGLE = 0,
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DRAW_PIXEL,
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COMPOSED_MESSAGE,
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};
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struct header
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{
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Type type;
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uint32_t message_length;
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};
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struct generic_message_base
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{
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virtual constexpr Type get_type() const = 0;
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virtual uint32_t get_size() const = 0;
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//virtual void operator()()
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//{
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// if(is_handler)
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// {
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// handle_message();
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// return;
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// }
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// create_message();
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//}
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//virtual void handle_message() = 0;
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//virtual void create_message() = 0;
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bool is_handler = false;
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};
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template<Type TypeValue>
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struct generic_message : public generic_message_base
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{
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virtual ~generic_message() = default;
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virtual constexpr Type get_type() const override
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{
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return type;
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}
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virtual header get_header() const
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{
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return header{get_type(), get_size()};
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}
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static constexpr Type type = TypeValue;
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};
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struct message
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{
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//header head;
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//generic_message_base* msg;
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//bool init_header()
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//{
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// if(!msg)
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// {
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// return false;
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// }
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// head = msg->get_header();
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// return true;
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//}
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//uint32_t get_size() const
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//{
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//}
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};
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struct composed_message : public generic_message<Type::COMPOSED_MESSAGE>
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{
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message** messages;
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};
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struct draw_rectangle : public generic_message<Type::DRAW_RECTANGLE>
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{
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virtual ~draw_rectangle() = default;
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virtual uint32_t get_size() const override
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{
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return sizeof(*this);
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}
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glm::vec2 position;
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glm::vec2 size;
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glm::vec3 color;
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};
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struct draw_pixel : public generic_message<Type::DRAW_PIXEL>
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{
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virtual ~draw_pixel() = default;
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virtual uint32_t get_size() const override
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{
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return sizeof(*this);
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}
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glm::vec2 position;
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glm::vec3 color;
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};
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uint32_t get_size(Type type)
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{
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static std::map<Type, uint32_t> type_map{};
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//initalizes map on first run
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static bool run_once = [&](){
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type_map.emplace(Type::DRAW_PIXEL, sizeof(draw_pixel));
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type_map.emplace(Type::DRAW_RECTANGLE, sizeof(draw_rectangle));
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type_map.emplace(Type::COMPOSED_MESSAGE, sizeof(composed_message));
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return true;
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}();
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return type_map[type];
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}
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generic_message_base* get_object(Type type, generic_message_base* msg)
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{
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switch(type)
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{
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case Type::COMPOSED_MESSAGE:
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{
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return reinterpret_cast<composed_message*>(msg);
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}
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case Type::DRAW_RECTANGLE:
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{
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return reinterpret_cast<draw_rectangle*>(msg);
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}
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case Type::DRAW_PIXEL:
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{
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return reinterpret_cast<draw_pixel*>(msg);
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}
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default:
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return nullptr;
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}
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}
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//template<Type T>
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//auto* get_object(generic_message_base* msg)
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//{
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// return nullptr;
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//}
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//
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//template<>
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//auto* get_object<Type::DRAW_PIXEL>(generic_message_base* msg)
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//{
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// return reinterpret_cast<draw_pixel*>(msg);
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//}
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//
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//template<>
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//auto* get_object<Type::DRAW_RECTANGLE>(generic_message_base* msg)
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//{
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// return reinterpret_cast<draw_rectangle*>(msg);
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//}
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//
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//template<>
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//auto* get_object<Type::COMPOSED_MESSAGE>(generic_message_base* msg)
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//{
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// return reinterpret_cast<composed_message*>(msg);
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//}
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}
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