/****************************************************************************** Product: "Fly'n'Shoot" game example* Last Updated for Version: 4.0.00* Date of the Last Update:  Apr 06, 2008**                    Q u a n t u m     L e a P s*                    ---------------------------*                    innovating embedded systems** Copyright (C) 2002-2008 Quantum Leaps, LLC. All rights reserved.** This software may be distributed and modified under the terms of the GNU* General Public License version 2 (GPL) as published by the Free Software* Foundation and appearing in the file GPL.TXT included in the packaging of* this file. Please note that GPL Section 2[b] requires that all works based* on this software must also be made publicly available under the terms of* the GPL ("Copyleft").** Alternatively, this software may be distributed and modified under the* terms of Quantum Leaps commercial licenses, which expressly supersede* the GPL and are specifically designed for licensees interested in* retaining the proprietary status of their code.** Contact information:* Quantum Leaps Web site:  http://www.quantum-leaps.com* e-mail:                  info@quantum-leaps.com*****************************************************************************/#include "qp_port.h"#include "bsp.h"#include "game.h"/* Q_DEFINE_THIS_FILE *//* local objects -----------------------------------------------------------*/typedef struct MissileTag {    QActive super;                              /* extend the QActive class */    uint8_t x;    uint8_t y;    uint8_t exp_ctr;} Missile;                                     /* the Missile active object */static QState Missile_initial  (Missile *me, QEvent const *e);static QState Missile_armed    (Missile *me, QEvent const *e);static QState Missile_flying   (Missile *me, QEvent const *e);static QState Missile_exploding(Missile *me, QEvent const *e);static Missile l_missile; /* the sole instance of the Missile active object *//* Public-scope objects ----------------------------------------------------*/QActive * const AO_Missile = (QActive *)&l_missile;       /* opaque pointer *//*..........................................................................*/void Missile_ctor(void) {    Missile *me = &l_missile;    QActive_ctor(&me->super, (QStateHandler)&Missile_initial);}/* HSM definition ----------------------------------------------------------*//*..........................................................................*/QState Missile_initial(Missile *me, QEvent const *e) {    (void)e;                  /* avoid the "unreferenced parameter" warning */    QActive_subscribe((QActive *)me, TIME_TICK_SIG);    QS_OBJ_DICTIONARY(&l_missile);  /* object dictionary for Missile object */    QS_FUN_DICTIONARY(&Missile_initial);    /* dictionaries for Missile HSM */    QS_FUN_DICTIONARY(&Missile_armed);    QS_FUN_DICTIONARY(&Missile_flying);    QS_FUN_DICTIONARY(&Missile_exploding);    QS_SIG_DICTIONARY(MISSILE_FIRE_SIG,   &l_missile);     /* local signals */    QS_SIG_DICTIONARY(HIT_WALL_SIG,       &l_missile);    QS_SIG_DICTIONARY(DESTROYED_MINE_SIG, &l_missile);    return Q_TRAN(&Missile_armed);}/*..........................................................................*/QState Missile_armed(Missile *me, QEvent const *e) {    switch (e->sig) {        case MISSILE_FIRE_SIG: {                                       /* initialize position from the Ship */            me->x = ((ObjectPosEvt const *)e)->x;            me->y = ((ObjectPosEvt const *)e)->y;            return Q_TRAN(&Missile_flying);        }    }    return Q_SUPER(&QHsm_top);}/*..........................................................................*/QState Missile_flying(Missile *me, QEvent const *e) {    switch (e->sig) {        case TIME_TICK_SIG: {            ObjectImageEvt *oie;            if (me->x + GAME_MISSILE_SPEED_X < GAME_SCREEN_WIDTH) {                me->x += GAME_MISSILE_SPEED_X;                /*tell the Tunnel to draw the Missile and test for wall hits*/                oie = Q_NEW(ObjectImageEvt, MISSILE_IMG_SIG);                oie->x   = me->x;                oie->y   = me->y;                oie->bmp = MISSILE_BMP;                QActive_postFIFO(AO_Tunnel, (QEvent *)oie);            }            else { /* Missile outside the range, make it ready to fire again*/                return Q_TRAN(&Missile_armed);            }            return Q_HANDLED();        }        case HIT_WALL_SIG: {            return Q_TRAN(&Missile_exploding);        }        case DESTROYED_MINE_SIG: {            /* tell the Ship the score for destroing this Mine */            QActive_postFIFO(AO_Ship, e);            /* re-arm immediately & let the destroyed Mine do the exploding */            return Q_TRAN(&Missile_armed);        }    }    return Q_SUPER(&QHsm_top);}/*..........................................................................*/QState Missile_exploding(Missile *me, QEvent const *e) {    switch (e->sig) {        case Q_ENTRY_SIG: {            me->exp_ctr = 0;            return Q_HANDLED();        }        case TIME_TICK_SIG: {            if ((me->x >= GAME_SPEED_X) && (me->exp_ctr < 15)) {                ObjectImageEvt *oie;                ++me->exp_ctr;             /* advance the explosion counter */                me->x -= GAME_SPEED_X;    /* move the explosion by one step */                /* tell the Tunnel to render the current stage of Explosion */                oie = Q_NEW(ObjectImageEvt, EXPLOSION_SIG);                oie->x   = me->x + 3;                 /* x-pos of explosion */                oie->y   = (int8_t)((int)me->y - 4);               /* y-pos */                oie->bmp = EXPLOSION0_BMP + (me->exp_ctr >> 2);                QActive_postFIFO(AO_Tunnel, (QEvent *)oie);            }            else {          /* explosion finished or moved outside the game */                return Q_TRAN(&Missile_armed);            }            return Q_HANDLED();        }    }    return Q_SUPER(&QHsm_top);}