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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: aereo.c,v 1.2 2004-05-25 18:24:59 giacomo 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
*
*/
//************************
//* file: aereo.c *
//* included by: bca.c *
//************************
TASK aereo_creator(void * arg)
{ int i, index, last;
WORD count;
PID pid=-1;
COLOR col;
double vel;
int dir;
WORD h;
double l;
WORD x, y;
while(1){
count=0;
index=-1;
last=-1;
for (i=0; i<AEREO_N_MAX; i++) // Conteggio aerei attivi
if (aereo_table[i].status) {
count++;
last=i; //...ultima posizione occupata in tabella...
}
else {
if (index==-1) index=i; //...prima posizione libera in tabella...
}
if (count<aereo_count && index!=-1) { // Richiesta nuovo aereo
aereo_table[index].status = 1; //...occupa posizione...
aereo_table[index].killing = 0; //...disattiva richiesta di kill...
col = FAB_rgb(FAB_int_rand(50,255), //...nuovo colore...
FAB_int_rand(50,255),
FAB_int_rand(50,255));
vel = FAB_double_rand(AEREO_V_MIN,AEREO_V_MAX); //...velocita'...
dir = FAB_sign_rand(); //...direzione...
h = FAB_int_rand(AEREO_H_MIN,AEREO_H_MAX); //...altezza...
y = Y0 + 500 - h*500/BASE_H;
l = (dir>0) ? AEREO_L_MIN : AEREO_L_MAX; //...posizione iniz...
x = (dir>0) ? AEREO_X_MIN : AEREO_X_MAX;
// ... settaggio valori in tabella ...
aereo_table[index].color = col;
if (index>0) {
if (dir>0) FAB_image_copy(image_aereo[0],aereo_table[index].image);
else FAB_image_copy(image_aereo[1],aereo_table[index].image);
}
else {
if (dir>0) FAB_image_copy(image_aereo[2],aereo_table[index].image);
else FAB_image_copy(image_aereo[3],aereo_table[index].image);
}
FAB_image_color_change(aereo_table[index].image,AEREO_BASE_COL,col);
aereo_table[index].vel = vel;
aereo_table[index].dir = dir;
aereo_table[index].h = h;
aereo_table[index].l = l;
aereo_table[index].x = x;
aereo_table[index].y = y;
if (index==0) pid = crea_hard_aereo(index); // sempre il 1ø hard
else pid = crea_soft_aereo(index); // tutti gli altri soft
aereo_table[index].pid = pid;
if (pid!=NIL) task_activate(pid);
else { //ripristino il posto libero in tabella;
aereo_table[index].status = 0;
aereo_table[index].killing = 0;
}
}
else if (count>aereo_count) { // Richiesta cancellazione aereo
aereo_table[last].killing = 1;
}
task_endcycle();
}
return NULL;
}
TASK aereo(void *arg)
{
int index; // indice nella aereo_table
FAB_IMAGE* image;
int xx0,yy0,xx1,yy1;
int y;
double x;
double old_x; // [pixel]: conserva valore x prima di aggiornare
double dx; // [pixel/us]: spostamento periodico
int first_time;
index = (int)arg;
image = aereo_table[index].image;
y = aereo_table[index].y;
x = aereo_table[index].x;
dx = aereo_table[index].vel * (AEREO_X_MAX-AEREO_X_MIN) / (double)BASE_L
* (AEREO_PERIOD / (60*60*1000000.0))
* aereo_table[index].dir;
first_time = 1;
while(1){
old_x = x;
x += dx;
xx0 = old_x - AEREO_LX/2;
yy0 = y - AEREO_LY/2;
xx1 = xx0 + AEREO_LX - 1;
yy1 = yy0 + AEREO_LY - 1;
aereo_table[index].x = x; //...aggiornamento posizione in tabella...
if (x<AEREO_X_MIN || x>AEREO_X_MAX) {
aereo_table[index].killing = 1;
}
if (aereo_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);
}
aereo_table[index].status=0;
aereo_table[index].pid=-2;
aereo_table[index].killing=0;
//il task aereo_creator si accorge che c' un aereo in meno
// quindi ne ricreer
uno nuovo!!!
return NULL;
}
if(aereo_table[index].x!=(int)old_x) {//...se c' lo spostamento reale
// di almeno un pixel...
mutex_lock(&grx_mutex); //...aggiorna disegno...
if (first_time) {
first_time=0;
}
else {
FAB_image_put_within(image_bca,X0,Y0,xx0,yy0,xx1,yy1);
}
FAB_image_put_within(image, x - AEREO_LX/2, y - AEREO_LY/2,
X0, Y0, X1, Y1);
mutex_unlock(&grx_mutex);
}
task_endcycle();
}
return NULL;
}
PID crea_soft_aereo_creator()
{
SOFT_TASK_MODEL m;
PID pid;
soft_task_default_model(m);
soft_task_def_periodic(m);
soft_task_def_period(m,AEREO_CREATOR_PERIOD);
soft_task_def_wcet(m,AEREO_CREATOR_WCET);
soft_task_def_met(m,AEREO_CREATOR_MET);
pid = task_create("aereo_creator", aereo_creator, &m, NULL);
return pid;
}
PID crea_hard_aereo(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, AEREO_WCET);
hard_task_def_mit(m,AEREO_PERIOD);
hard_task_def_usemath(m);
pid = task_create("hard_aereo", aereo, &m, NULL);
return pid;
}
PID crea_soft_aereo(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,AEREO_PERIOD);
soft_task_def_wcet(m, AEREO_WCET);
soft_task_def_met(m,AEREO_MET);
soft_task_def_usemath(m);
pid = task_create("soft aereo", aereo, &m, NULL);
return pid;
}