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#ifndef __rockdodger_INTRO_H__
#define __rockdodger_INTRO_H__
#include "scroller.h"
#include "u-iff.h"
#define NUM_COPPERBARS 6
struct rockintro {
SDL_Surface *copperbars[NUM_COPPERBARS];
SDL_Surface *intro_image;
float positions[NUM_COPPERBARS];
float speeds[NUM_COPPERBARS];
Scroller_t *scroller;
float fld_logophase;
float fld_amplitude;
float fld_logo_wagging_amplitude;
int fld_last_topline;
};
/*! \brief Initialise the intro.
*
* \param target Surface to be painted later on (for witdth, etc.)
* \param iff context for loading parameters for the intro
* \return NULL on error or pointer to allocated rockintro structure
*/
struct rockintro *init_intro(SDL_Surface *target, uiff_ctx_t *iff);
/*! \brief Do the intro thingy.
*
* \param intro Pointer to the intro structure with the current state
* \param target SDL_Surface to draw on.
* \param movementrate Relative speed to 50 fps, see globals.h.
*/
void update_and_draw_intro(struct rockintro *intro, SDL_Surface *target, float movementrate);
/*! Shutdown intro and free data
*
* Warning! Do not call on the same structure twice!
*
* \param intro Pointer to the intro structure with the current state
*/
void shutdown_intro(struct rockintro *intro);
/*! \brief Play the whole intro
*
* This function will check if a file in the $HOME directory exists in
* order not to bug the player too much.
*
* \param force if nonzero then always play the intro
* \param oss_sound_flag if nonzero then play a sound
* \param iff context for loading parameters for the intro
*/
void play_intro(int force, int oss_sound_flag, uiff_ctx_t iff);
#endif
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