trotFunky/Toy-Raytracer
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Debug: Introduce Dear ImGui interfaces

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Introduce Dear ImGui to the CMakeBuild, allow building without it.

Add two debug interfaces : one FPS counter and frame time graph,
one map visualizer and editor.
This commit is contained in:
trotFunky 2024-01-26 23:05:11 +00:00
parent 52fdd8328f
commit f25a649144
3 changed files with 160 additions and 8 deletions
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63
main.cpp
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@ -1,20 +1,35 @@
#include <iostream>
#include <SFML/Graphics.hpp>
#ifdef IMGUI
#include <imgui.h>
#include <imgui-SFML.h>
#endif
#include "World.h"
// TODO: Find a way to go to edges instead of just equally split (?)
int main()
{
World world(10,10);
world.setBlock(BlockType::AIR,1,1,8,8);
World world(32,32);
world.setBlock(BlockType::AIR,1,1,30,30);
world.setBlock(BlockType::WALL,4,4,2,2);
world.player.move(2,2);
std::cout << world << std::endl;
sf::RenderWindow window(sf::VideoMode(800,600),"Da raycasting");
sf::RenderWindow window(sf::VideoMode(1000,1000),"Da raycasting");
#ifdef IMGUI
if (!ImGui::SFML::Init(window)) {
std::cout << "Failed to init Dear ImGui SFML" << std::endl;
return -1;
}
sf::Clock fpsDataClock;
float frameTimings[100];
unsigned int frameCount = 0;
#endif
// window.setFramerateLimit(60);
sf::Event event{};
sf::Clock frameTime;
@ -34,6 +49,13 @@ int main()
window.setView(sf::View(newView));
continue;
}
#ifdef IMGUI
ImGui::SFML::ProcessEvent(window, event);
// Check if Dear ImGui should process the key events.
ImGuiIO& io = ImGui::GetIO();
if (io.WantCaptureMouse || io.WantCaptureKeyboard)
continue;
#endif
if (event.type == sf::Event::KeyPressed) {
switch (event.key.code) {
case sf::Keyboard::Key::Escape:
@ -71,11 +93,44 @@ int main()
}
}
window.clear();
const sf::Time& deltaT = frameTime.restart();
world.step(frameTime.restart().asSeconds());
#ifdef IMGUI
ImGui::SFML::Update(window, deltaT);
#endif
world.step(deltaT.asSeconds());
world.render(window);
#ifdef IMGUI
// ImGui::ShowDemoWindow();
ImGuiWindowFlags window_flags = ImGuiWindowFlags_NoDecoration
| ImGuiWindowFlags_AlwaysAutoResize
| ImGuiWindowFlags_NoSavedSettings
| ImGuiWindowFlags_NoFocusOnAppearing
| ImGuiWindowFlags_NoNav;
ImVec2 window_area = ImGui::GetMainViewport()->WorkSize;
ImGui::SetNextWindowPos({window_area.x - 20, 20}, ImGuiCond_Always, {1,0});
ImGui::SetNextWindowBgAlpha(0.2f);
ImGui::Begin("FPS", nullptr ,window_flags);
if (fpsDataClock.getElapsedTime().asMilliseconds() > 20) {
frameTimings[frameCount%100] = static_cast<float>(deltaT.asMicroseconds());
frameCount++;
fpsDataClock.restart();
}
ImGui::Text("FPS : %d", (int)(1.0/deltaT.asSeconds()));
ImGui::PlotLines("µs", frameTimings, frameCount >= 100 ? 100 : frameCount);
ImGui::End();
ImGui::SFML::Render(window);
#endif
window.display();
}
#ifdef IMGUI
ImGui::SFML::Shutdown();
#endif
return 0;
}