util_ripples.hpp

/*
* Copyright (c) 2010 Jice
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struct WaterZone {
	float cumulatedElapsed; // to control the ripples framerate
	float *data; // water height data after update
	float *oldData; // water height data before update
	bool isActive; // not to use CPU is there are no ripples
};

class RippleManager {
public :
	RippleManager(TCODMap *waterMap);
	void startRipple(int dungeonx, int dungeony);
	bool updateRipples(float elapsed);
	void renderRipples(const TCODImage *ground, TCODImage *groundWithRipples);
protected :
	int width,height;
	WaterZone zone;
	void init(TCODMap *waterMap);
	float getData(int x, int y) const { return zone.data[x+y*width]; }
};