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engines/stark/visual/explodingimage.h

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+/* ScummVM - Graphic Adventure Engine
+ *
+ * ScummVM is the legal property of its developers, whose names
+ * are too numerous to list here. Please refer to the COPYRIGHT
+ * file distributed with this source distribution.
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+#ifndef STARK_VISUAL_EXPLODING_IMAGE_H
+#define STARK_VISUAL_EXPLODING_IMAGE_H
+
+#include "engines/stark/visual/visual.h"
+
+#include "common/array.h"
+#include "common/rect.h"
+
+#include "graphics/pixelformat.h"
+
+#include "math/vector2d.h"
+
+namespace Graphics {
+struct Surface;
+}
+
+namespace Stark {
+
+namespace Gfx {
+class Driver;
+class SurfaceRenderer;
+class Bitmap;
+}
+
+/**
+ * An image with an animated explosion effect
+ *
+ * Used by the top bar when picking up an inventory item
+ */
+class VisualExplodingImage : public Visual {
+public:
+	static const VisualType TYPE = Visual::kExplodingImage;
+
+	explicit VisualExplodingImage(Gfx::Driver *gfx);
+	~VisualExplodingImage() override;
+
+	/** Prepare exploding the specified image */
+	void initFromSurface(const Graphics::Surface *surface, uint originalWidth, uint originalHeight);
+
+	/** Render the image at the specified position */
+	void render(const Common::Point &position);
+
+private:
+	struct ExplosionUnit {
+		ExplosionUnit();
+
+		void setPosition(int x, int y);
+		void setExplosionSettings(const Common::Point &center, const Common::Point &amplitude, float scale);
+		void setColor(uint32 color, const Graphics::PixelFormat &format);
+		void update();
+		void draw(Graphics::Surface *surface);
+
+		Math::Vector2d _position;
+		Math::Vector2d _speed;
+		Math::Vector2d _center;
+		float _scale;
+
+		int _stillImageTimeRemaining;
+		int _explosionFastAccelerationTimeRemaining;
+		uint32 _mainColor;
+		uint32 _darkColor;
+	};
+
+	Gfx::Driver *_gfx;
+	Gfx::SurfaceRenderer *_surfaceRenderer;
+	Gfx::Bitmap *_bitmap;
+	Graphics::Surface *_surface;
+
+	uint _originalWidth;
+	uint _originalHeight;
+
+	Common::Array<ExplosionUnit> _units;
+};
+
+} // End of namespace Stark
+
+#endif // STARK_VISUAL_EXPLODING_IMAGE_H