File content as of revision 2:eba4ed0263a4:

#ifndef MISSILE_PUBLIC_H
#define MISSILE_PUBLIC_H

///The missile status
typedef enum {
    MISSILE_EXPLODED=2,///<missile has been destroyed
    MISSILE_ACTIVE=1,///<missile is active
    MISSILE_DEACTIVE=0///<missile is no longer active
} MISSILE_STATUS;


/// The structure to store the information of a missile
typedef struct {
    int x;                   ///< The x-coordinate of missile current position
    int y;                   ///< The y-coordinate of missile current position
    double source_x;           ///< The x-coordinate of the missile's origin
    double target_x;           ///< The x-coordinate of the missile's target
    int tick;                  ///< The missile's internal tick
    MISSILE_STATUS status;   ///< The missile status, see MISSILE_STATUS
} MISSILE;

#define MAX_NUM_MISSILE  5

/** This function draw the missiles onto the screen
    Call missile_generator() repeatedly in your game-loop. ex: main()
*/
void missile_generator(void);

/** The function set the status of missile to be MISSILE_EXPLODED
    @param index The index in missile_record. It must be smaller than MAX_NUM_MISSILE.
*/
void missile_set_exploded(int index);

/** Get the information of a missile
    @param index The index in missile_record. It must be smaller than MAX_NUM_MISSILE.
    @return The structure of missile information
*/
MISSILE missile_get_info(int index);

/** Set the speed of missiles, Speed has range of 1-8 with 1 being fastest and 8 being slowest
*/
void set_missile_speed(int speed);

/** Set the interval that the missiles fire, interval has range of 1-100 with 1 being fired in
    very quick succession and 100 being fired very slowly after one another
*/
void set_missile_interval(int interval);

void missile_draw(MISSILE missile, int color);

#endif //MISSILE_PUBLIC_H