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/*
 * Project: S.Ha.R.K.
 *
 * Coordinators: Giorgio Buttazzo <giorgio@sssup.it>
 *
 * ReTiS Lab (Scuola Superiore S.Anna - Pisa - Italy)
 *
 * http://www.sssup.it
 * http://retis.sssup.it
 * http://hartik.sssup.it
 */

#include "asteroid.h"
#include <string.h>

int score;             /* current player score */
int energy;            /* current player energy */
int enemy;             /* current player killed enemy */
int lives;             /* current player lives */
int crash;             /* astro vs. rock */

TASK stat_write()
{
        char st[20];
        int l;

        while (1) {

                sem_wait(&mx_st_scr);
                sprintf(st, "%6d", score);
                sem_post(&mx_st_scr);
                sem_wait(&mx_grf);
                grx_text(st, GB_XMAX+80, GB_YMIN+ 8, RGB_YELLOW, RGB_BLACK);
                sem_post(&mx_grf);

                sem_wait(&mx_st_nrg);
                sprintf(st, "%6d", energy);
                if (energy <= 0) crash = 1;
                sem_post(&mx_st_nrg);
                sem_wait(&mx_grf);
                grx_text(st, GB_XMAX+80, GB_YMIN+24, RGB_YELLOW, RGB_BLACK);
                sem_post(&mx_grf);

                sem_wait(&mx_st_kil);
                sprintf(st, "%6d", enemy);
                sem_post(&mx_st_kil);
                sem_wait(&mx_grf);
                grx_text(st, GB_XMAX+80, GB_YMIN+40, RGB_YELLOW, RGB_BLACK);
                sem_post(&mx_grf);

                strcpy(st,LIVE_X);
                sem_wait(&mx_st_liv);
                l = lives;
                sem_post(&mx_st_liv);
                if (l == 0) strcpy(st,LIVE_0);
                if (l == 1) strcpy(st,LIVE_1);
                if (l == 2) strcpy(st,LIVE_2);
                if (l == 3) strcpy(st,LIVE_3);
                if (l == 4) strcpy(st,LIVE_4);
                if (l == 5) strcpy(st,LIVE_5);
                if (l == 6) strcpy(st,LIVE_6);
                sem_wait(&mx_grf);
                grx_text(st, GB_XMAX+80, GB_YMIN+56, RGB_YELLOW, RGB_BLACK);
                sem_post(&mx_grf);

                task_endcycle();
        }
}

void reset_game()
{
        sem_wait(&mx_st_liv);
        if (lives > 0) {
                lives--;
                sem_post(&mx_st_liv);
        } else {
                lives = LIVES_INIT;
                sem_post(&mx_st_liv);

                sem_wait(&mx_st_scr);
                score = 0;
                sem_post(&mx_st_scr);

                sem_wait(&mx_st_kil);
                enemy = 0;
                sem_post(&mx_st_kil);
        }

        sem_wait(&mx_st_nrg);
        energy = ENERGY_INIT;
        sem_post(&mx_st_nrg);
}

void new_game(KEY_EVT *k)
{
        reset_rock();
        reset_astro();
        reset_game();
}

void start_game(KEY_EVT *k)
{
        start_astro();
        start_rock();
}

void frame_stat()
{
        grx_text("Statistics", GB_XMAX+10, 45, RGB_BLUE, RGB_BLACK);
        grx_line(GB_XMAX+8,55,640-8,55,RGB_RED);

        grx_rect(GB_XMAX+7, GB_YMIN-3, 640-6, GB_YMIN+70, RGB_GREEN);
        grx_text("Score  : ", GB_XMAX+15, GB_YMIN+ 8, RGB_CYAN, RGB_BLACK);
        grx_text("Energy : ", GB_XMAX+15, GB_YMIN+24, RGB_CYAN, RGB_BLACK);
        grx_text("Enemy  : ", GB_XMAX+15, GB_YMIN+40, RGB_CYAN, RGB_BLACK);
        grx_text("Lives  : ", GB_XMAX+15, GB_YMIN+56, RGB_CYAN, RGB_BLACK);
}

void create_stat_task()
{
        SOFT_TASK_MODEL ms;
        PID pid;

        soft_task_default_model(ms);
        soft_task_def_ctrl_jet(ms);
        soft_task_def_met(ms, STAT_WCET);
        soft_task_def_period(ms,STAT_PERIOD);
        soft_task_def_usemath(ms);
        pid = task_create("StatWrite", stat_write, &ms, NULL);
        if (pid == NIL) {
                FB26_close(FRAME_BUFFER_DEVICE);
                perror("Could not create task <StatWrite>");
                sys_end();
        } else
                task_activate(pid);
}

void init_stat()
{
        KEY_EVT k;

        score  = 0;
        enemy  = 0;
        energy = ENERGY_INIT;
        lives  = LIVES_INIT;

        create_stat_task();

        k.flag = 0;
        k.scan = KEY_N;
        k.ascii = 'n';
        k.status = KEY_PRESSED;
        keyb_hook(k,new_game,FALSE);

        k.flag = 0;
        k.scan = KEY_B;
        k.ascii = 'b';
        k.status = KEY_PRESSED;
        keyb_hook(k,start_game,FALSE);
}