fools2019/pk4/ropscript.c

#include <stdio.h>

// Final buffer goes at 3:A100 of the save file

char buf[0x1b0];

int s02_ADB1;

char s02_ADB1_b;
char s02_ADB2;
char s02_ADB3;
char s02_ADB4;

char sSaveBlockChecksum;

char func()
{
    s02_ADB1_b = (s02_ADB1 >> 0) & 0xFF;
    s02_ADB2 = (s02_ADB1 >> 8) & 0xFF;
    s02_ADB3 = (s02_ADB1 >> 16) & 0xFF;
    s02_ADB4 = (s02_ADB1 >> 24) & 0xFF;

    s02_ADB2 ^= (s02_ADB1_b + 1) ^ s02_ADB4;
    s02_ADB3 += s02_ADB2;
    s02_ADB4 = s02_ADB2 ^ (s02_ADB4 + (s02_ADB3 / 2));

    s02_ADB1 = (s02_ADB4 << 24) | (s02_ADB3 << 16) | (s02_ADB2 << 8) | s02_ADB1_b;

    return s02_ADB4;
}

int main()
{
    int bufi = 0;

    // sSaveSource = $FCDF;
    sSaveBlockChecksum = 0x7F;
    s02_ADB1 = 0x8C10E62F;
    for (int i = 0; i < 0x48; i++) {
        buf[bufi] = (char)(bufi & 0xFF);
        buf[bufi] ^= func();
        sSaveBlockChecksum += buf[bufi];
        bufi++;

        buf[bufi] = (char)(bufi & 0xFF);
        sSaveBlockChecksum ^= buf[bufi];
        buf[bufi] ^= func();
        bufi++;
    }
    buf[bufi] = sSaveBlockChecksum;
    bufi++;

    // sSaveSource = $FA7A;
    sSaveBlockChecksum = 0xC2;
    s02_ADB1 = 0x6AF528C2;
    for (int i = 0; i < 0x14; i++) {
        buf[bufi] = (char)(bufi & 0xFF);
        buf[bufi] ^= func();
        sSaveBlockChecksum ^= buf[bufi];
        bufi++;
    }
    buf[bufi] = sSaveBlockChecksum;
    bufi++;

    // sSaveSource = $F84E;
    for (int i = 0; i < 0x03; i++) {
         buf[bufi] = (char)(bufi & 0xFF);
         bufi++;
    }

    // sSaveSource = $F859;
    sSaveBlockChecksum = 0x06;
    s02_ADB1 = 0xEF7305A6;
    for (int i = 0; i < 0x4C; i++) {
        buf[bufi] = (char)(bufi & 0xFF);
        buf[bufi] ^= func();
        sSaveBlockChecksum ^= buf[bufi];
        bufi++;

        buf[bufi] = (char)(bufi & 0xFF);
        buf[bufi] ^= func();
        sSaveBlockChecksum += buf[bufi];
        bufi++;
    }
    buf[bufi] = sSaveBlockChecksum;
    bufi++;

    // sSaveSource = $DE41;
    s02_ADB1 = 0x2A7FEC38;
    sSaveBlockChecksum = 0x3C;
    for (int i = 0; i < 0x21; i++) {
        buf[bufi] = (char)(bufi & 0xFF);
        sSaveBlockChecksum += buf[bufi];
        buf[bufi] ^= func();
        bufi++;
    }
    buf[bufi] = sSaveBlockChecksum;
    bufi++;

    // sSaveSource = $DE99;
    sSaveBlockChecksum = 0xE2;
    s02_ADB1 = 0x4BFC1115;
    for (int i = 0 ; i < 0x40; i++) {
        buf[bufi] = (char)(bufi & 0xFF);
        buf[bufi] ^= func();
        sSaveBlockChecksum += buf[bufi];
        bufi++;
    }
    buf[bufi] = sSaveBlockChecksum;
    bufi++;

    s02_ADB1 = 0xA23F387C;
    sSaveBlockChecksum = 0x16;
    // sSaveSource = $A003;
    for (int i = 0; i < 0x04; i++) {
        buf[bufi] = (char)(bufi & 0xFF);
        buf[bufi] ^= func();
        sSaveBlockChecksum ^= buf[bufi];
        sSaveBlockChecksum += buf[bufi];
        bufi++;
    }
    buf[bufi] = sSaveBlockChecksum;
    bufi++;

    sSaveBlockChecksum = 0x00;

    // sSaveSource = $FFE1;
    buf[bufi] = (char)(bufi & 0xFF);
    sSaveBlockChecksum += buf[bufi];
    sSaveSource = 0xB16B;
    *(sSaveSource++) = sSaveBlockChecksum;
    bufi++;

    // sSaveSource = $FFE2;
    // buf[bufi] = *(sSaveSource++);
    // sSaveBlockChecksum ^= buf[bufi];
    // buf[bufi] = sSaveBlockChecksum;
    // sSaveSource = $B16C;
    // *(sSaveSource++) = sSaveBlockChecksum;
    // bufi++;

    // sSaveSource = $FF04;
    // buf[bufi] = *(sSaveSource++);
    // sSaveBlockChecksum += buf[bufi];
    // buf[bufi] = sSaveBlockChecksum;
    // sSaveSource = $B16D;
    // *(sSaveSource++) = sSaveBlockChecksum;
    // bufi++;
    // sSaveSource = $FF05;
    // buf[bufi] = *(sSaveSource++);
    // sSaveBlockChecksum ^= buf[bufi];
    // buf[bufi] = sSaveBlockChecksum;
    // sSaveSource = $B16E;
    // *(sSaveSource++) = sSaveBlockChecksum;
    // bufi++;
    // s02_ADB1 = $EFBEADDE;
    // bufi++;
    // bufi++;
    // sSaveBlockChecksum = $55;
    // sSaveSource = $F350;
    // *(sSaveSource++) = sSaveBlockChecksum;
    // *(sSaveSource++) = sSaveBlockChecksum;
    // rept ($1AB) {;
        // sSaveSource = $F350;
        // sSaveBlockChecksum = *sSaveSource;
        // sSaveBlockChecksum += buf[bufi];
        // *(sSaveSource++) = sSaveBlockChecksum;
        // sSaveBlockChecksum = *sSaveSource;
        // sSaveBlockChecksum ^= buf[bufi];
        // *(sSaveSource++) = sSaveBlockChecksum;
        // buf[bufi] ^= func(s02_ADB1);
        // bufi++;
    // };

    // sSaveBlockChecksum = $CC;
    // sSaveSource = $ADB1;
    // sSaveBlockChecksum ^= buf[bufi];
    // *(sSaveSource++) = sSaveBlockChecksum;
    // bufi++;
    // sSaveBlockChecksum ^= buf[bufi];
    // *(sSaveSource++) = sSaveBlockChecksum;
    // bufi++;
    // sSaveBlockChecksum ^= buf[bufi];
    // *(sSaveSource++) = sSaveBlockChecksum;
    // bufi++;
    // sSaveBlockChecksum ^= buf[bufi];
    // *(sSaveSource++) = sSaveBlockChecksum;
    // bufi++;
    // sSaveSource = $F350;
    // buf[bufi] = *(sSaveSource++);
    // buf[bufi] ^= func(s02_ADB1);
    // bufi++;
    // buf[bufi] = *(sSaveSource++);
    // buf[bufi] ^= func(s02_ADB1);
    // bufi++;
}