Make code more portable

Author: Mikolaj Feliks

bonus.c

@@ -19,7 +19,7 @@ void b_nadaj0(STATEK* bon)
 void bonus_inicjuj(STATEK* bon)
 {
     int i, j = 36;
-    bon->x = random(299);
+    bon->x = rand() % 299;
     bon->y = 0;
     bon->licznik = 0;
     for (i = 0; i < 6; i++)

bullets.c

@@ -113,7 +113,7 @@ void p_nadaj0(void)
 void p_kontrola_kaps(POCISK* poc, KAPSULA* kaps, POLE* ple)
 {
     if (poc->x > kaps->x && poc->x < kaps->x + 19 && poc->y > kaps->y && poc->y < kaps->y + 19 && !kaps->trafiona && !ple->aktywne) {
-        play_sound(&soundtab[random(SND_EXPLOSION)]);
+        play_sound(&soundtab[rand() % SND_EXPLOSION]);
 
         kaps->giwera--;
         kaps->trafiona = 1;
@@ -136,7 +136,7 @@ void p_kontrola_stat(POCISK* poc, STATEK* sta, KAPSULA* kaps)
         kaps->licznik++;
         ile_aktywnych--;
 
-        play_sound(&soundtab[random(SND_EXPLOSION)]);
+        play_sound(&soundtab[rand() % SND_EXPLOSION]);
     }
 }
 

control.c

@@ -7,6 +7,7 @@
 *****************************************/
 
 #include <dos.h>
+#include <string.h>
 
 #include "globals.h"
 

enemies.c

@@ -13,36 +13,44 @@
 void stat_inicjuj(STATEK* sta, KAPSULA* kaps)
 {
     int i, j;
-    if (!random(2))
-        sta->x = random(30);
-    else
-        sta->x = random(30) + 269;
-    sta->y = random(79);
+    
+    if ((rand() % 2) == 0) {
+        sta->x = rand() % 30;
+    }
+    else {
+        sta->x = (rand() % 30) + 269;
+    }
+    sta->y = rand() % 79;
+    
     sta->zm_x = 0;
     sta->zm_y = 0;
     sta->aktywny = 1;
-    sta->xs_min = random(319);
-    sta->xs_max = sta->xs_min + random(319 - sta->xs_min);
-    for (i = 0; i < 3; i++)
-        sta->poc_x[i] = random(319);
+    
+    sta->xs_min = rand() % 319;
+    sta->xs_max = sta->xs_min + rand() % (319 - sta->xs_min);
+    
+    for (i = 0; i < 3; i++) {
+        sta->poc_x[i] = rand() % 319;
+    }
+
     sta->licznik = 0;
     sta->k = 0;
     sta->laser_pom = 0;
     if (kaps->punkty < 20)
         sta->giwera = 0;
     else if (kaps->punkty >= 20 && kaps->punkty < 40)
-        sta->giwera = random(2);
+        sta->giwera = rand() % 2;
     else if (kaps->punkty >= 40 && kaps->punkty < 60)
-        sta->giwera = random(3);
+        sta->giwera = rand() % 3;
     else if (kaps->punkty >= 60 && kaps->punkty < 80)
-        sta->giwera = random(4);
+        sta->giwera = rand() % 4;
     else if (kaps->punkty >= 80 && kaps->punkty < 100)
-        sta->giwera = random(5);
+        sta->giwera = rand() % 5;
     else
-        sta->giwera = random(6);
+        sta->giwera = rand() % 6;
     if (sta->giwera != 5) {
-        sta->ruch = random(2);
-        sta->v = random(2);
+        sta->ruch = rand() % 2;
+        sta->v = rand() % 2;
     } else {
         sta->ruch = 2;
         sta->v = 1;
@@ -209,8 +217,8 @@ void stat_ruch2(STATEK* statek)
             }
         }
         if (!statek->zm_x && !statek->zm_y) {
-            statek->kx = random(299);
-            statek->ky = random(100);
+            statek->kx = rand() % 299;
+            statek->ky = rand() % 100;
             statek->zm_x = 1;
             statek->zm_y = 1;
         }

font.c

@@ -6,10 +6,13 @@
   (C) 2001, 2023  M. Feliks
 *****************************************/
 
+#include <string.h>
+
 #include "globals.h"
 
 unsigned char chardata[];
 
+
 void init_font(void)
 {
 }

intro.c

@@ -93,7 +93,7 @@ void intro(void)
         timer_wait();
     }
 
-    play_sound(&soundtab[random(SND_EXPLOSION)]);
+    play_sound(&soundtab[rand() % SND_EXPLOSION]);
     flash();
 
     while (1) {

main.c

@@ -9,6 +9,7 @@
 #include <conio.h>
 #include <stdio.h>
 #include <stdlib.h>
+#include <time.h>
 #include <string.h>
 
 #include "globals.h"
@@ -55,7 +56,8 @@ void main(void)
     paleta_inicjuj();
     save_pal();
     w_inicjuj_sincos();
-    randomize();
+    
+    srand(time(NULL));
 
     sb_dsp_out(ON_SPEAKER);
     enable_dma_int();

results.c

@@ -9,6 +9,7 @@
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
+#include <conio.h>
 
 #include "globals.h"
 
@@ -147,7 +148,7 @@ void analiza_wynikow(int punkty)
         zmien_rekordy(punkty);
     drukuj_liste();
 
-    play_sound(&soundtab[random(SND_EXPLOSION)]);
+    play_sound(&soundtab[rand() % SND_EXPLOSION]);
     flash();
 
     while (1) {

sound.c

@@ -6,31 +6,8 @@
   (C) 2001, 2023  M. Feliks
 *****************************************/
 
-#include <dos.h>
-#include <stdio.h>
-#include <stdlib.h>
-
 #include "globals.h"
 
-#define SB_BASE_ADDRESS 0x220
-#define DSP_OUT 0x10
-
-#define DMA_CHANNEL 0x01
-#define DMA_PAGE_PORT 0x83
-#define DMA_OFFSET_PORT 0x02
-#define DMA_LENGHT_PORT 0x03
-#define DMA_MODE 0x48
-#define DMA_INT 0x0d
-
-#define WAV_HEADER_SIZE 44
-#define SOUND_FREQUENCY 11025
-
-void interrupt (*old_dma_int)(void);
-unsigned char end_of_sound = 1;
-
-int num_of_loaded_sounds = 0;
-
-
 int sb_init(void)
 {
     return 1;
@@ -71,56 +48,18 @@ void play_sound(SOUND* s)
 
 unsigned get_file_size(char* filename)
 {
-    FILE* p;
-    unsigned size = 0;
-
-    if ((p = fopen(filename, "r+b")) == NULL)
-        return NULL;
-
-    while (!feof(p)) {
-        fgetc(p);
-        size++;
-    }
-
-    fclose(p);
-    return size;
+    return 0;
 }
 
 int load_sound(SOUND* s, char* filename)
 {
-    FILE* p;
-    unsigned i;
-
-    if ((s->lenght = get_file_size(filename)) == NULL) {
-        strcpy(missed_file, filename);
-        return NULL;
-    }
-
-    //s->lenght-=WAV_HEADER_SIZE;
-
-    if ((s->buffer = (unsigned char*)malloc(s->lenght)) == NULL)
-        return NULL;
-
-    p = fopen(filename, "r+b");
-
-    //fseek(p,WAV_HEADER_SIZE,SEEK_SET);
-    fgets(s->buffer, s->lenght, p);
-
-    fclose(p);
-
-    num_of_loaded_sounds++;
     return 1;
 }
 
 void unload_sound(SOUND* s)
 {
-    free(s->buffer);
 }
 
 void unload_sounds(void)
 {
-    int i;
-
-    for (i = 0; i < num_of_loaded_sounds; i++)
-        unload_sound(&soundtab[i]);
 }

stars.c

@@ -30,8 +30,8 @@ void g_inicjuj(void)
     for (i = 0; i < 50; i++) {
         g = &gwiazda[i];
 
-        g->x = random(320);
-        g->y = random(200);
+        g->x = rand() % 320;
+        g->y = rand() % 200;
 
         if (i < 10) {
             g->v = 0;
@@ -73,7 +73,7 @@ void gwiazdy(void)
                 g->y++;
         }
         if (g->y > 199) {
-            g->x = random(320);
+            g->x = rand() % 320;
             g->y = 0;
         }
     }