84 lines
2.5 KiB
C++
84 lines
2.5 KiB
C++
#include <renderer/renderer.hpp>
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#include <utils.hpp>
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#include <state/gamestate.hpp>
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#include <object/entity.hpp>
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#include <window/window.hpp>
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#include <object/camera.hpp>
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namespace Game::Renderer {
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Renderer::Renderer() : mRenderer(nullptr) {}
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Renderer::~Renderer() {
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destroy();
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}
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void Renderer::destroy() {
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if (mRenderer) {
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SDL_DestroyRenderer(mRenderer);
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mRenderer = nullptr;
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LOG("Destroyed Renderer");
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}
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}
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bool Renderer::init(SDL_Window* window) {
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// Request VSync before/at renderer setup; some backends honor this hint.
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SDL_SetHint(SDL_HINT_RENDER_VSYNC, "1");
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mRenderer = SDL_CreateRenderer(window, nullptr);
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if (!mRenderer) {
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std::string errorMsg = "Failed to create renderer: " + std::string(SDL_GetError());
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ERROR(errorMsg.c_str());
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return false;
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}
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mVSyncEnabled = SDL_SetRenderVSync(mRenderer, 1);
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if (!mVSyncEnabled) {
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WARN("VSync could not be enabled, using software frame pacing fallback: " << SDL_GetError());
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}
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if (!SDL_SetRenderDrawColor(mRenderer, 0, 0, 255, 255)) {
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ERROR("Failed to set renderer draw color: " << SDL_GetError());
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return false;
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}
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LOG("Renderer created successfully");
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return true;
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}
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void Renderer::renderFrame() {
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mClear();
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float camX, camY;
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Object::Camera::getInstance().getPosition(camX, camY);
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int screenW, screenH;
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SDL_GetWindowSizeInPixels(Window::Window::getSDLWindowBackend(), &screenW, &screenH);
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// Pass the config to avoid wasting time recalculating it for every entity, since it's not gonna change during the frame
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RendererConfig config{ camX, camY, screenW, screenH };
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try {
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auto entities = Game::State::GameState::getInstance().getEntitiesSnapshot(true);
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for (auto* entity : entities) {
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if (entity) {
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entity->render(this, config);
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}
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}
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} catch (const std::exception& e) {
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ERROR("Exception while rendering frame: " << e.what());
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}
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mPresent();
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}
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void Renderer::mClear() {
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if (!SDL_RenderClear(mRenderer)) {
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ERROR("Failed to clear renderer: " << SDL_GetError());
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}
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}
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void Renderer::mPresent() {
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if (!SDL_RenderPresent(mRenderer)) {
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ERROR("Failed to present renderer: " << SDL_GetError());
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}
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}
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} |