Method CollectDisplaySprites

TombEngine/Renderer/RendererDraw2D.cpp:577–628

	}

	void Renderer::CollectDisplaySprites(RenderView& renderView)
	{
		constexpr auto DISPLAY_SPACE_ASPECT = DISPLAY_SPACE_RES.x / DISPLAY_SPACE_RES.y;

		// Calculate screen aspect ratio.
		auto screenRes = GetScreenResolution().ToVector2();
		float screenAspect = screenRes.x / screenRes.y;

		// Calculate aspect ratio correction base.
		float aspectCorrectionBase = screenAspect / DISPLAY_SPACE_ASPECT;

		for (const auto& displaySprite : DisplaySprites)
		{
			// If sprite is a video texture, bypass it if texture is inactive.
			if (displaySprite.SpriteID == VIDEO_SPRITE_ID && (_videoSprite.Texture == nullptr || _videoSprite.Texture->Texture == nullptr))
				continue;

			const auto& sprite = displaySprite.SpriteID == VIDEO_SPRITE_ID ? _videoSprite : _sprites[Objects[displaySprite.ObjectID].meshIndex + displaySprite.SpriteID];

			// Calculate sprite aspect ratio.
			float spriteAspect = (float)sprite.Width / (float)sprite.Height;

			// Calculate layout using helper function.
			auto layout = CalculateDisplaySpriteLayout(
				spriteAspect, displaySprite.Scale, displaySprite.Orientation,
				displaySprite.AlignMode, displaySprite.ScaleMode,
				screenAspect, aspectCorrectionBase);

			AddDisplaySprite(
				sprite,
				displaySprite.Position + layout.Offset,
				displaySprite.Orientation,
				layout.HalfSize * 2,
				displaySprite.Color,
				displaySprite.Priority,
				displaySprite.BlendMode,
				layout.AspectCorrection,
				renderView);
		}

		std::sort(
			renderView.DisplaySpritesToDraw.begin(), renderView.DisplaySpritesToDraw.end(),
			[](const RendererDisplaySpriteToDraw& spriteToDraw0, const RendererDisplaySpriteToDraw& spriteToDraw1)
			{
				// Same priority; sort by blend mode.
				if (spriteToDraw0.Priority == spriteToDraw1.Priority)
					return (spriteToDraw0.BlendMode < spriteToDraw1.BlendMode);

				// Sort by priority.
				return (spriteToDraw0.Priority < spriteToDraw1.Priority);
			});
	}
}