177 lines
7.4 KiB
C++
177 lines
7.4 KiB
C++
#include <vector>
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#include <libreborn/libreborn.h>
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#include <symbols/minecraft.h>
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#include <mods/init/init.h>
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#include <mods/feature/feature.h>
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#include <mods/misc/misc.h>
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#include <mods/creative/creative.h>
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#ifndef MCPI_SERVER_MODE
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// Add Item To Inventory
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static void inventory_add_item(unsigned char *inventory, unsigned char *item, bool is_tile) {
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ItemInstance *item_instance = new ItemInstance;
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ALLOC_CHECK(item_instance);
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item_instance = (*(is_tile ? ItemInstance_constructor_tile : ItemInstance_constructor_item))(item_instance, item);
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(*FillingContainer_addItem)(inventory, item_instance);
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}
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// Expand Creative Inventory
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static void Inventory_setupDefault_FillingContainer_addItem_call_injection(unsigned char *filling_container) {
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// Add Items
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inventory_add_item(filling_container, *Item_sign, false);
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inventory_add_item(filling_container, *Item_flintAndSteel, false);
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inventory_add_item(filling_container, *Item_snowball, false);
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inventory_add_item(filling_container, *Item_egg, false);
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inventory_add_item(filling_container, *Item_shears, false);
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// Dyes
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for (int i = 0; i < 16; i++) {
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if (i == 15) {
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// Bonemeal Is Already In The Creative Inventory
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continue;
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}
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ItemInstance *new_item_instance = new ItemInstance;
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ALLOC_CHECK(new_item_instance);
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new_item_instance = (*ItemInstance_constructor_item_extra)(new_item_instance, *Item_dye_powder, 1, i);
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(*FillingContainer_addItem)(filling_container, new_item_instance);
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}
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inventory_add_item(filling_container, *Item_camera, false);
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// Add Tiles
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inventory_add_item(filling_container, *Tile_water, true);
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inventory_add_item(filling_container, *Tile_lava, true);
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inventory_add_item(filling_container, *Tile_calmLava, true);
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inventory_add_item(filling_container, *Tile_glowingObsidian, true);
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inventory_add_item(filling_container, *Tile_web, true);
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inventory_add_item(filling_container, *Tile_topSnow, true);
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inventory_add_item(filling_container, *Tile_ice, true);
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inventory_add_item(filling_container, *Tile_invisible_bedrock, true);
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inventory_add_item(filling_container, *Tile_bedrock, true);
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inventory_add_item(filling_container, *Tile_info_updateGame1, true);
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inventory_add_item(filling_container, *Tile_info_updateGame2, true);
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// Nether Reactor
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for (int i = 0; i < 3; i++) {
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if (i == 0) {
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// Default Is Already In The Creative Inventory
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continue;
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}
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ItemInstance *new_item_instance = new ItemInstance;
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ALLOC_CHECK(new_item_instance);
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new_item_instance = (*ItemInstance_constructor_tile_extra)(new_item_instance, *Tile_netherReactor, 1, i);
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(*FillingContainer_addItem)(filling_container, new_item_instance);
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}
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// Tall Grass
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for (int i = 0; i < 4; i++) {
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if (i == 2) {
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// Identical To Previous Auxiliary Value
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continue;
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}
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ItemInstance *new_item_instance = new ItemInstance;
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ALLOC_CHECK(new_item_instance);
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new_item_instance = (*ItemInstance_constructor_tile_extra)(new_item_instance, *Tile_tallgrass, 1, i);
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(*FillingContainer_addItem)(filling_container, new_item_instance);
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}
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// Smooth Stone Slab
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{
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ItemInstance *new_item_instance = new ItemInstance;
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ALLOC_CHECK(new_item_instance);
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new_item_instance = (*ItemInstance_constructor_tile_extra)(new_item_instance, *Tile_stoneSlab, 1, 6);
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(*FillingContainer_addItem)(filling_container, new_item_instance);
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}
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}
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#endif
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// Store All Default TileItems
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static std::vector<unsigned char *> &get_default_tile_items() {
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static std::vector<unsigned char *> tile_items;
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return tile_items;
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}
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// Hook Specific TileItem :;operator new
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static unsigned char *Tile_initTiles_operator_new_injection(__attribute__((unused)) uint32_t size) {
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// Call Original Method
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unsigned char *ret = (unsigned char *) ::operator new(AUX_DATA_TILE_ITEM_SIZE);
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// Store
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get_default_tile_items().push_back(ret);
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// Return
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return ret;
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}
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// Modify All Default TileItems
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static void Tile_initTiles_injection(__attribute__((unused)) unsigned char *null) {
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// Loop
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for (unsigned char *tile_item : get_default_tile_items()) {
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// Get ID
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int32_t id = *(int32_t *) (tile_item + Item_id_property_offset);
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// Switch VTable
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*(unsigned char **) tile_item = AuxDataTileItem_vtable;
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// Configure Item
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*(bool *) (tile_item + Item_is_stacked_by_data_property_offset) = true;
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*(int32_t *) (tile_item + Item_max_damage_property_offset) = 0;
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*(unsigned char **) (tile_item + AuxDataTileItem_icon_tile_property_offset) = Tile_tiles[id];
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}
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get_default_tile_items().clear();
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}
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// Check Restriction Status
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static int is_restricted = 1;
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int creative_is_restricted() {
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return is_restricted;
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}
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// Init
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void init_creative() {
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// Add Extra Items To Creative Inventory (Only Replace Specific Function Call)
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if (feature_has("Expand Creative Mode Inventory", server_enabled)) {
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#ifndef MCPI_SERVER_MODE
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misc_run_on_creative_inventory_setup(Inventory_setupDefault_FillingContainer_addItem_call_injection);
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#endif
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// Use AuxDataTileItem by default instead of TileItem, so tiles in the Creative
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// Inventory can have arbitrary auxiliary values.
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{
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// Hook TileItem ::operator new To Store TileItems
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overwrite_call((void *) 0x1295a4, (void *) Tile_initTiles_operator_new_injection);
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// Modify Stored TileItems
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misc_run_on_internal_after_tiles_setup(Tile_initTiles_injection);
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}
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}
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// Remove Creative Mode Restrictions (Opening Chests, Crafting, Etc)
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if (feature_has("Remove Creative Mode Restrictions", server_enabled)) {
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unsigned char nop_patch[4] = {0x00, 0xf0, 0x20, 0xe3}; // "nop"
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// Remove Restrictions
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patch((void *) 0x59e68, nop_patch);
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patch((void *) 0x59ebc, nop_patch);
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patch((void *) 0x59f10, nop_patch);
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unsigned char allow_eating_patch[4] = {0x02, 0x00, 0x00, 0xea}; // "b 0xddcbc"
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patch((void *) 0xddcac, allow_eating_patch);
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// Fix UI
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patch((void *) 0x4cb88, nop_patch);
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unsigned char fix_ui_patch[4] = {0x05, 0x00, 0x55, 0xe1}; // "cmp r5, r5"
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patch((void *) 0x4bf20, fix_ui_patch);
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// Fix Inventory
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patch((void *) 0xcce90, nop_patch);
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patch((void *) 0xd5548, nop_patch);
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unsigned char inv_creative_check_r3_patch[4] = {0x03, 0x00, 0x53, 0xe1}; // "cmp r3, r3"
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patch((void *) 0xd497c, inv_creative_check_r3_patch);
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unsigned char inv_creative_check_r5_patch[4] = {0x05, 0x00, 0x55, 0xe1}; // "cmp r5, r5"
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patch((void *) 0xd4d94, inv_creative_check_r5_patch);
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patch((void *) 0xd50ac, nop_patch);
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patch((void *) 0x8d080, nop_patch);
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patch((void *) 0x8d090, nop_patch);
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// Display Slot Count
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patch((void *) 0x23d4c, nop_patch);
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patch((void *) 0x2c570, nop_patch);
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patch((void *) 0x3eec0, nop_patch);
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// Maximize Creative Inventory Stack Size
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unsigned char maximize_stack_patch[4] = {0xff, 0x60, 0xa0, 0xe3}; // "mov r6, 0xff"
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patch((void *) 0xccf80, maximize_stack_patch);
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// Allow Nether Reactor
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unsigned char nether_reactor_patch[4] = {0x00, 0x00, 0xa0, 0xe3}; // "mov r0, #0x0"
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patch((void *) 0x12283c, nether_reactor_patch);
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// Disable Other Restrictions
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is_restricted = 0;
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}
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}
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