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Renderpause #338

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61e173f
RenderManager: pause/unpause
Feb 3, 2026
acbbd0c
RenderManager: pause/unpause (enhanced)
Feb 3, 2026
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6 changes: 6 additions & 0 deletions botcraft/include/botcraft/Renderer/RenderingManager.hpp
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Original file line number Diff line number Diff line change
@@ -1,5 +1,6 @@
#pragma once

#include <atomic>
#include <unordered_set>
#include <mutex>
#include <functional>
Expand Down Expand Up @@ -63,6 +64,9 @@ namespace Botcraft
// Set a flag to terminate the rendering loop after the current frame
void Close();

void Pause() { paused = true; }
void Unpause() { paused = false; }

// Set mouse and keyboard callbacks to handle user inputs
void SetMouseCallback(std::function<void(double, double)> callback);
void SetKeyboardCallback(std::function<void(std::array<bool, static_cast<int>(KEY_CODE::NUMBER_OF_KEYS)>, double)> callback);
Expand Down Expand Up @@ -155,6 +159,8 @@ namespace Botcraft

std::array<bool, static_cast<int>(KEY_CODE::NUMBER_OF_KEYS)> is_key_pressed;

std::atomic_bool paused { true }; // default paused

bool inventory_open;
bool behaviour_open;

Expand Down
107 changes: 58 additions & 49 deletions botcraft/src/Renderer/RenderingManager.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -214,47 +214,50 @@ namespace Botcraft
glClearColor(current_color[0], current_color[1], current_color[2], 1.0f);
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);

//Change view matrix
world_renderer->UpdateViewMatrix();
if (!paused)
{
//Change view matrix
world_renderer->UpdateViewMatrix();

if (has_proj_changed)
{
glm::mat4 projection = glm::perspective(glm::radians(45.0f), current_window_width / static_cast<float>(current_window_height), 0.1f, 200.0f);
my_shader->SetMat4("projection", projection);
world_renderer->SetCameraProjection(projection);
has_proj_changed = false;
}
if (has_proj_changed)
{
glm::mat4 projection = glm::perspective(glm::radians(45.0f), current_window_width / static_cast<float>(current_window_height), 0.1f, 200.0f);
my_shader->SetMat4("projection", projection);
world_renderer->SetCameraProjection(projection);
has_proj_changed = false;
}

world_renderer->UpdateFaces();
world_renderer->UpdateFaces();

my_shader->Use();
my_shader->Use();

//Draw all faces
world_renderer->UseAtlasTextureGL();
//Draw all faces
world_renderer->UseAtlasTextureGL();

#ifdef USE_IMGUI
int num_chunks, num_rendered_chunks, num_entities, num_rendered_entities, num_faces, num_rendered_faces;
world_renderer->RenderFaces(&num_chunks, &num_rendered_chunks, &num_entities, &num_rendered_entities, &num_faces, &num_rendered_faces);
{
ImGui::SetNextWindowPos(ImVec2(static_cast<float>(current_window_width), 0.0f), 0, ImVec2(1.0f, 0.0f));
ImGui::SetNextWindowSize(ImVec2(180.0f, 170.0f));
ImGui::Begin("Rendering", nullptr, ImGuiWindowFlags_NoResize | ImGuiWindowFlags_NoMove | ImGuiWindowFlags_NoScrollbar | ImGuiWindowFlags_NoCollapse);
ImGui::Text("Lim. FPS: %.1f (%.2fms)", 1.0 / deltaTime, deltaTime * 1000.0);
ImGui::Text("Real FPS: %.1f (%.2fms)", 1.0 / real_fps, real_fps * 1000.0);
ImGui::Text("Loaded sections: %i", num_chunks);
ImGui::Text("Rendered sections: %i", num_rendered_chunks);
ImGui::Text("Num entities: %i", num_entities);
ImGui::Text("Rendered entities: %i", num_rendered_entities);
ImGui::Text("Loaded faces: %i", num_faces);
ImGui::Text("Rendered faces: %i", num_rendered_faces);
ImGui::End();
}
int num_chunks, num_rendered_chunks, num_entities, num_rendered_entities, num_faces, num_rendered_faces;
world_renderer->RenderFaces(&num_chunks, &num_rendered_chunks, &num_entities, &num_rendered_entities, &num_faces, &num_rendered_faces);
{
ImGui::SetNextWindowPos(ImVec2(static_cast<float>(current_window_width), 0.0f), 0, ImVec2(1.0f, 0.0f));
ImGui::SetNextWindowSize(ImVec2(180.0f, 170.0f));
ImGui::Begin("Rendering", nullptr, ImGuiWindowFlags_NoResize | ImGuiWindowFlags_NoMove | ImGuiWindowFlags_NoScrollbar | ImGuiWindowFlags_NoCollapse);
ImGui::Text("Lim. FPS: %.1f (%.2fms)", 1.0 / deltaTime, deltaTime * 1000.0);
ImGui::Text("Real FPS: %.1f (%.2fms)", 1.0 / real_fps, real_fps * 1000.0);
ImGui::Text("Loaded sections: %i", num_chunks);
ImGui::Text("Rendered sections: %i", num_rendered_chunks);
ImGui::Text("Num entities: %i", num_entities);
ImGui::Text("Rendered entities: %i", num_rendered_entities);
ImGui::Text("Loaded faces: %i", num_faces);
ImGui::Text("Rendered faces: %i", num_rendered_faces);
ImGui::End();
}
#else
world_renderer->RenderFaces();
world_renderer->RenderFaces();
#endif

glBindVertexArray(0);
glBindTexture(GL_TEXTURE_2D, 0);
glBindVertexArray(0);
glBindTexture(GL_TEXTURE_2D, 0);
}

#ifdef USE_IMGUI
// Draw the behaviour if it's open
Expand Down Expand Up @@ -326,27 +329,33 @@ namespace Botcraft
}


ImGui::Render();
if (!paused)
{
ImGui::Render();

// Render ImGui
ImGui_ImplOpenGL3_RenderDrawData(ImGui::GetDrawData());
// Render ImGui
ImGui_ImplOpenGL3_RenderDrawData(ImGui::GetDrawData());
}
#endif
}

glfwSwapBuffers(window);
glfwPollEvents();

{
std::scoped_lock<std::mutex> lock(screenshot_mutex);
if (take_screenshot)
{
std::vector<unsigned char> pixels(current_window_height * current_window_width * 3);
glReadPixels(0, 0, current_window_width, current_window_height, GL_RGB, GL_UNSIGNED_BYTE, pixels.data());

WriteImage(screenshot_path, current_window_height, current_window_width, 3, pixels.data(), true);
take_screenshot = false;
}
}
if (!paused)
{
glfwSwapBuffers(window);
glfwPollEvents();

{
std::scoped_lock<std::mutex> lock(screenshot_mutex);
if (take_screenshot)
{
std::vector<unsigned char> pixels(current_window_height * current_window_width * 3);
glReadPixels(0, 0, current_window_width, current_window_height, GL_RGB, GL_UNSIGNED_BYTE, pixels.data());

WriteImage(screenshot_path, current_window_height, current_window_width, 3, pixels.data(), true);
take_screenshot = false;
}
}
}

real_fps = static_cast<float>(std::chrono::duration_cast<std::chrono::microseconds>(std::chrono::steady_clock::now() - start).count() / 1e6);

Expand Down