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

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2020-12-02 23:18:49 +00:00
#include <vector>
#include <libcore/libcore.h>
#include "../feature/feature.h"
#include "input.h"
#include "../minecraft.h"
// Open Sign Screen
static void LocalPlayer_openTextEdit_injection(unsigned char *local_player, unsigned char *sign) {
if (*(int *)(sign + 0x18) == 4) {
unsigned char *minecraft = *(unsigned char **) (local_player + 0xc90);
unsigned char *screen = (unsigned char *) ::operator new(0xd0);
screen = (*TextEditScreen)(screen, sign);
(*Minecraft_setScreen)(minecraft, screen);
}
}
#define BACKSPACE_KEY 8
static int is_valid_key(char key) {
return (key >= 32 && key <= 126) || key == BACKSPACE_KEY;
}
// Store Text Input
std::vector<char> input;
void input_key_press(char key) {
if (is_valid_key(key)) {
input.push_back(key);
}
}
void input_clear_input() {
input.clear();
}
// Handle Text Input
static void TextEditScreen_updateEvents_injection(unsigned char *screen) {
// Call Original Method
(*Screen_updateEvents)(screen);
if (*(char *)(screen + 4) == '\0') {
uint32_t vtable = *((uint32_t *) screen);
for (char key : input) {
if (key == BACKSPACE_KEY) {
// Handle Backspace
(*(Screen_keyPressed_t *) (vtable + 0x6c))(screen, BACKSPACE_KEY);
} else {
// Handle Nrmal Key
(*(Screen_keyboardNewChar_t *) (vtable + 0x70))(screen, key);
}
}
}
input_clear_input();
}
void init_input_cpp() {
if (feature_has("Fix Sign Placement")) {
// Fix Signs
patch_address(LocalPlayer_openTextEdit_vtable_addr, (void *) LocalPlayer_openTextEdit_injection);
patch_address(TextEditScreen_updateEvents_vtable_addr, (void *) TextEditScreen_updateEvents_injection);
}
}