finished tutorial 7

template/02-sprite/src/tutorial_02.cpp

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+/*
+# _____        ____   ___
+#   |     \/   ____| |___|
+#   |     |   |   \  |   |
+#-----------------------------------------------------------------------
+# Copyright 2022, tyra - https://github.com/h4570/tyra
+# Licensed under Apache License 2.0
+# Sandro Sobczyński <sandro.sobczynski@gmail.com>
+*/
+
+#include <tyra>
+#include "tutorial_02.hpp"
+
+namespace Tyra {
+
+Tutorial02::Tutorial02(Engine* t_engine) : engine(t_engine) {}
+
+Tutorial02::~Tutorial02() {
+  engine->renderer.getTextureRepository().freeBySprite(sprite);
+}
+
+void Tutorial02::init() {
+  engine->renderer.setClearScreenColor(Color(32.0F, 32.0F, 32.0F));
+
+  /** Sprite contains rectangle information. */
+  loadSprite();
+
+  /** Texture contains png image. */
+  loadTexture();
+}
+
+void Tutorial02::loop() {
+  auto& renderer = engine->renderer;
+
+  /** Begin frame will clear our screen. */
+  renderer.beginFrame();
+
+  /** Render sprite. */
+  renderer.renderer2D.render(sprite);
+
+  /** End frame will perform vsync. */
+  renderer.endFrame();
+}
+
+void Tutorial02::loadSprite() {
+  const auto& screenSettings = engine->renderer.core.getSettings();
+
+  sprite.mode = SpriteMode::MODE_STRETCH;
+
+  /** Let's scale it down */
+  sprite.size = Vec2(256.0F, 128.0F);
+
+  /** Set it in screen center */
+  sprite.position =
+      Vec2(screenSettings.getWidth() / 2.0F - sprite.size.x / 2.0F,
+           screenSettings.getHeight() / 2.0F - sprite.size.y / 2.0F);
+
+  TYRA_LOG("Sprite created!");
+}
+
+void Tutorial02::loadTexture() {
+  /**
+   * Renderer has high layer functions,
+   * which allows to render:
+   * - Sprite (2D)
+   * - Mesh (3D)
+   *
+   * It uses ONLY low layer functions which are in renderer.core
+   */
+  auto& renderer = engine->renderer;
+
+  /**
+   * TextureRepository is a repository of textures.
+   * It is a singleton class, with all game textures.
+   * We are linking these textures with sprite's (2D) and mesh (3D) materials.
+   */
+  auto& textureRepository = renderer.getTextureRepository();
+
+  /**
+   * Texture is stored in "res" directory.
+   * Content of "res" directory is automatically copied into
+   * "bin" directory, which contains our final game.
+   *
+   * File utils automatically add's device prefix to the path,
+   * based on current working directory.
+   *
+   * In PS2 world:
+   * - USB has a "mass:" prefix
+   * - Our PC in PS2Link has a "host:" prefix
+   * - Our PC in PCSX2 has a "host:" prefix
+   */
+  auto filepath = FileUtils::fromCwd("tyra.png");
+
+  /**
+   * Tyra supports following PNG formats:
+   * 32bpp (RGBA)
+   * 24bpp (RGB)
+   * 8bpp, palletized (RGBA)
+   * 4bpp, palletized (RGBA)
+   *
+   * 8bpp and 4bpp are the fastest.
+   * All of these formats can be easily exported via GIMP.
+   */
+  auto* texture = textureRepository.add(filepath);
+
+  /** Let's assign this texture to sprite. */
+  texture->addLink(sprite.id);
+
+  TYRA_LOG("Texture loaded!");
+}
+
+}  // namespace Tyra