minecraft-pi-reborn/mods/src/home/home.cpp

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#include <cerrno>
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#include <libreborn/libreborn.h>
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#include <symbols/minecraft.h>
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#include <mods/home/home.h>
#include <mods/init/init.h>
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// Get MCPI Home Directory
char *home_get() {
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static char *dir = nullptr;
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// Load
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if (dir == nullptr) {
safe_asprintf(&dir, "%s" HOME_SUBDIRECTORY_FOR_GAME_DATA, getenv("HOME"));
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}
// Return
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return dir;
}
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// Free
__attribute__((destructor)) static void _free_home() {
free(home_get());
}
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// Init
void init_home() {
// Store Data In ~/.minecraft-pi Instead Of ~/.minecraft
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patch_address((void *) Strings_default_path_pointer, (void *) HOME_SUBDIRECTORY_FOR_GAME_DATA);
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// The override code resolves assets manually,
// making changing directory redundant.
unsigned char nop_patch[4] = {0x00, 0xf0, 0x20, 0xe3}; // "nop"
patch((void *) 0xe0ac, nop_patch);
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}