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Mode.hpp
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Mode.hpp
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#pragma once
#include <SDL.h>
#include <glm/glm.hpp>
#include <memory>
struct Mode : std::enable_shared_from_this< Mode > {
virtual ~Mode() { }
//handle_event is called when new mouse or keyboard events are received:
// (note that this might be many times per frame or never)
//The function should return 'true' if it handled the event.
virtual bool handle_event(SDL_Event const &, glm::uvec2 const &window_size) { return false; }
//update is called at the start of a new frame, after events are handled:
// 'elapsed' is time in seconds since the last call to 'update'
virtual void update(float elapsed) { }
//draw is called after update:
virtual void draw(glm::uvec2 const &drawable_size) = 0;
//Mode::current is the Mode to which events are dispatched.
// use 'set_current' to change the current Mode (e.g., to switch to a menu)
static std::shared_ptr< Mode > current;
static void set_current(std::shared_ptr< Mode > const &);
};