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engines/stark/visual/effects/bubbles.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_EFFECTS_BUBBLES_H
+#define STARK_VISUAL_EFFECTS_BUBBLES_H
+
+#include "engines/stark/visual/effects/effect.h"
+
+#include "common/array.h"
+#include "common/rect.h"
+
+namespace Stark {
+
+namespace Gfx {
+class Driver;
+class SurfaceRenderer;
+}
+
+/**
+ * A visual effect for drawing small bubbles moving up on top of the scene
+ */
+class VisualEffectBubbles : public VisualEffect {
+public:
+	static const VisualType TYPE = Visual::kEffectBubbles;
+
+	explicit VisualEffectBubbles(Gfx::Driver *gfx, const Common::Point &size);
+	~VisualEffectBubbles() override;
+
+	/** Set the effect's parameters using the string based data format found in the game data files */
+	void setParams(const Common::String &params);
+
+	/** Draw the effect at the designated position */
+	void render(const Common::Point &position);
+
+private:
+
+	enum Kind {
+		kSmall  = 1,
+		kLarge  = 2,
+		kRandom = 3
+	};
+
+	struct Bubble {
+		Common::Point position;
+		Kind kind;
+	};
+
+	// Parameters
+	uint _bubbleCount;
+	Kind _kind;
+	int _sourcePositionRatioX;
+	int _maxVerticalSpeed;
+	int _maxHorizontalSpeed;
+	byte _mainColorR;
+	byte _mainColorG;
+	byte _mainColorB;
+
+	// State
+	Common::Point _sourcePosition;
+	uint32 _mainColor;
+	uint32 _darkColor;
+	Common::Array<Bubble> _bubbles;
+
+	void update();
+	void drawBubble(const Bubble &bubble) const;
+	void drawSmallBubble(const Bubble &bubble) const;
+	void drawLargeBubble(const Bubble &bubble) const;
+};
+
+} // End of namespace Stark
+
+#endif // STARK_VISUAL_EFFECTS_BUBBLES_H