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/*
* Project: S.Ha.R.K.
*
* Coordinators:
* Giorgio Buttazzo <giorgio@sssup.it>
* Paolo Gai <pj@gandalf.sssup.it>
*
* Authors :
* Paolo Gai <pj@gandalf.sssup.it>
* Massimiliano Giorgi <massy@gandalf.sssup.it>
* Luca Abeni <luca@gandalf.sssup.it>
* (see the web pages for full authors list)
*
* ReTiS Lab (Scuola Superiore S.Anna - Pisa - Italy)
*
* http://www.sssup.it
* http://retis.sssup.it
* http://shark.sssup.it
*/
/* CVS : $Id: cannone.c,v 1.4 2006-07-03 15:10:15 tullio Exp $ */
/*
* Copyright (C) 2000 Fabio Calabrese <fabiocalabrese77@yahoo.it>
*
* 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 2 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, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
*/
#include "bca.h"
TASK cannone_creator(void * arg)
{ int i, index, last;
WORD count;
PID pid=-1;
while(1){
count=0;
index=-1;
last=-1;
for (i=0; i<CANNONE_N_MAX; i++) // Conteggio aerei attivi
if (cannone_table[i].status) {
count++;
last=i; //...ultima posizione occupata in tabella...
}
else {
if (index==-1) index=i; //...prima posizione libera in tabella...
}
if (count<cannone_count && index!=-1) { // Richiesta nuovo cannone
cannone_table[index].status = 1; //...occupa posizione...
cannone_table[index].killing = 0; //...disattiva richiesta di kill...
if (index==0) pid = crea_hard_cannone(index); // sempre il 1ø hard
else pid = crea_soft_cannone(index); // tutti gli altri soft
cannone_table[index].pid = pid;
if (pid!=NIL) task_activate(pid);
else { //ripristino il posto libero in tabella;
cannone_table[index].status = -2;
cannone_table[index].killing = -2;
}
}
else if (count>cannone_count) { // Richiesta cancellazione cannone
cannone_table[last].killing = 1;
}
task_endcycle();
}
return NULL;
}
PID crea_soft_cannone_creator();
PID crea_hard_cannone(int index);
PID crea_hard_cannone(int index);
PID crea_hard_missile(int index);
PID crea_soft_missile(int index);
TASK cannone(void *arg)
{
PID missile_pid=-2;
int i, index; // indice nella aereo_table e cannone_table
int d, dir;
int xx0,yy0,xx1,yy1;
int first_time;
index = (int)arg;
first_time = 1;
if (index%2) {
//indice dispari
xx0 = X0 + 500/2 - CANNONE_LX/2 + 500/(CANNONE_N_MAX+1)*(index+1)/2;
}
else {
//indice pari
xx0 = X0 + 500/2 - CANNONE_LX/2 - 500/(CANNONE_N_MAX+1)*(index/2);
}
xx1 = xx0 + CANNONE_LX;
yy0= Y1 - CANNONE_LY;
yy1= Y1;
cannone_table[index].x = xx0 + CANNONE_LX/2;
while(1){
if (cannone_table[index].killing) {
if (!first_time) {
mutex_lock(&grx_mutex);
FAB_image_put_within(image_bca,X0,Y0,xx0,yy0,xx1,yy1);
mutex_unlock(&grx_mutex);
}
cannone_table[index].status=0;
cannone_table[index].pid=-2;
cannone_table[index].killing=0;
//il task aereo_creator si accorge che c' un aereo in meno
// quindi ne ricreer
uno nuovo!!!
return NULL;
}
if (first_time) {
mutex_lock(&grx_mutex); //...aggiorna disegno...
if (index==0) FAB_image_put(image_cannone[1], xx0, yy0);
else FAB_image_put(image_cannone[0], xx0, yy0);
mutex_unlock(&grx_mutex);
first_time=0;
}
if (!cannone_table[index].fire) {
for (i=0; i<AEREO_N_MAX; i++) {
if (aereo_table[i].status) {
d = aereo_table[i].x - (xx0+CANNONE_LX/2);
dir = aereo_table[i].dir;
if (d*dir<0 && FAB_ABS(d)<=CANNONE_SENSIBILITA/1000.0*500/BASE_L) {
// FA F U O C O
if (index==0) missile_pid=crea_hard_missile(index);
else missile_pid=crea_soft_missile(index);
if (missile_pid!=NIL) {
cannone_table[index].fire = 1;
task_activate(missile_pid);
break;
}
}
}
}
}
task_endcycle();
}
return NULL;
}
PID crea_soft_cannone_creator()
{
SOFT_TASK_MODEL m;
PID pid;
soft_task_default_model(m);
soft_task_def_periodic(m);
soft_task_def_period(m,CANNONE_CREATOR_PERIOD);
soft_task_def_wcet(m,CANNONE_CREATOR_WCET);
soft_task_def_met(m,CANNONE_CREATOR_MET);
pid = task_create("cannone_creator", cannone_creator, &m, NULL);
return pid;
}
PID crea_hard_cannone(int index)
{
HARD_TASK_MODEL m;
PID pid;
hard_task_default_model(m);
hard_task_def_level(m,1);
hard_task_def_arg(m,(void*)index);
hard_task_def_periodic(m);
hard_task_def_wcet(m, CANNONE_WCET);
hard_task_def_mit(m,CANNONE_PERIOD);
pid = task_create("hard_cannone", cannone, &m, NULL);
return pid;
}
PID crea_soft_cannone(int index)
{
SOFT_TASK_MODEL m;
PID pid;
soft_task_default_model(m);
soft_task_def_level(m,2);
soft_task_def_arg(m,(void*)index);
soft_task_def_periodic(m);
soft_task_def_period(m,CANNONE_PERIOD);
soft_task_def_wcet(m, CANNONE_WCET);
soft_task_def_met(m,CANNONE_MET);
pid = task_create("soft_cannone", cannone, &m, NULL);
return pid;
}