minecraft-pi-reborn/mods/src/game-mode/ui.cpp

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#include <string>
#include <set>
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#include <symbols/minecraft.h>
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#include <libreborn/libreborn.h>
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#include <mods/text-input-box/TextInputScreen.h>
#include <mods/touch/touch.h>
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#include <mods/misc/misc.h>
#include "game-mode-internal.h"
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// Strings
#define GAME_MODE_STR(mode) ("Game Mode: " mode)
#define SURVIVAL_STR GAME_MODE_STR("Survival")
#define CREATIVE_STR GAME_MODE_STR("Creative")
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// Structure
struct CreateWorldScreen {
TextInputScreen super;
TextInputBox *name;
TextInputBox *seed;
Button *game_mode;
Button *create;
Button *back;
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};
static void create_world(Minecraft *minecraft, std::string name, bool is_creative, std::string seed);
CUSTOM_VTABLE(create_world_screen, Screen) {
TextInputScreen::setup(vtable);
// Constants
static int line_height = 8;
static int bottom_padding = 4;
static int inner_padding = 4;
static int description_padding = 4;
static int title_padding = 8;
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static int button_height = 24;
static int content_y_offset_top = (title_padding * 2) + line_height;
static int content_y_offset_bottom = button_height + (bottom_padding * 2);
// Init
static Screen_init_t original_init = vtable->init;
vtable->init = [](Screen *super) {
original_init(super);
CreateWorldScreen *self = (CreateWorldScreen *) super;
// Name
self->name = TextInputBox::create("World Name", "Unnamed world");
self->super.m_textInputs->push_back(self->name);
self->name->init(super->font);
self->name->setFocused(true);
// Seed
self->seed = TextInputBox::create("Seed");
self->super.m_textInputs->push_back(self->seed);
self->seed->init(super->font);
self->seed->setFocused(false);
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// Game Mode
self->game_mode = touch_create_button(1, CREATIVE_STR);
super->rendered_buttons.push_back(self->game_mode);
super->selectable_buttons.push_back(self->game_mode);
// Create
self->create = touch_create_button(2, "Create");
super->rendered_buttons.push_back(self->create);
super->selectable_buttons.push_back(self->create);
// Back
self->back = touch_create_button(3, "Back");
super->rendered_buttons.push_back(self->back);
super->selectable_buttons.push_back(self->back);
};
// Removal
static Screen_removed_t original_removed = vtable->removed;
vtable->removed = [](Screen *super) {
original_removed(super);
CreateWorldScreen *self = (CreateWorldScreen *) super;
delete self->name;
delete self->seed;
self->game_mode->vtable->destructor_deleting(self->game_mode);
self->back->vtable->destructor_deleting(self->back);
self->create->vtable->destructor_deleting(self->create);
};
// Rendering
static Screen_render_t original_render = vtable->render;
vtable->render = [](Screen *super, int x, int y, float param_1) {
// Background
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misc_render_background(80, super->minecraft, 0, 0, super->width, super->height);
misc_render_background(32, super->minecraft, 0, content_y_offset_top, super->width, super->height - content_y_offset_top - content_y_offset_bottom);
// Call Original Method
original_render(super, x, y, param_1);
// Title
std::string title = "Create world";
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super->drawCenteredString(super->font, &title, super->width / 2, title_padding, 0xffffffff);
// Game Mode Description
CreateWorldScreen *self = (CreateWorldScreen *) super;
bool is_creative = self->game_mode->text == CREATIVE_STR;
std::string description = is_creative ? Strings_creative_mode_description : Strings_survival_mode_description;
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super->drawString(super->font, &description, self->game_mode->x, self->game_mode->y + self->game_mode->height + description_padding, 0xa0a0a0);
};
// Positioning
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static Screen_setupPositions_t original_setupPositions = vtable->setupPositions;
vtable->setupPositions = [](Screen *super) {
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original_setupPositions(super);
CreateWorldScreen *self = (CreateWorldScreen *) super;
// Height/Width
int width = 120;
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int height = button_height;
self->create->width = self->back->width = self->game_mode->width = width;
int seed_width = self->game_mode->width;
int name_width = width * 1.5f;
self->create->height = self->back->height = self->game_mode->height = height;
int text_box_height = self->game_mode->height;
// Find Center Y
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int top = content_y_offset_top;
int bottom = super->height - content_y_offset_bottom;
int center_y = ((bottom - top) / 2) + top;
center_y -= (description_padding + line_height) / 2;
// X/Y
self->create->y = self->back->y = super->height - bottom_padding - height;
self->create->x = self->game_mode->x = (super->width / 2) - inner_padding - width;
self->back->x = (super->width / 2) + inner_padding;
int seed_x = self->back->x;
int name_x = (super->width / 2) - (name_width / 2);
int name_y = center_y - inner_padding - height;
self->game_mode->y = center_y + inner_padding;
int seed_y = self->game_mode->y;
// Update Text Boxes
self->name->setSize(name_x, name_y, name_width, text_box_height);
self->seed->setSize(seed_x, seed_y, seed_width, text_box_height);
};
// ESC
vtable->handleBackEvent = [](Screen *super, bool do_nothing) {
if (!do_nothing) {
ScreenChooser_setScreen(&super->minecraft->screen_chooser, 5);
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}
return true;
};
// Button Click
vtable->buttonClicked = [](Screen *super, Button *button) {
CreateWorldScreen *self = (CreateWorldScreen *) super;
bool is_creative = self->game_mode->text == CREATIVE_STR;
if (button == self->game_mode) {
// Toggle Game Mode
self->game_mode->text = is_creative ? SURVIVAL_STR : CREATIVE_STR;
} else if (button == self->back) {
// Back
super->vtable->handleBackEvent(super, false);
} else if (button == self->create) {
// Create
create_world(super->minecraft, self->name->getText(), is_creative, self->seed->getText());
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}
};
}
static Screen *create_create_world_screen() {
// Construct
CreateWorldScreen *screen = new CreateWorldScreen;
ALLOC_CHECK(screen);
Screen_constructor(&screen->super.super);
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// Set VTable
screen->super.super.vtable = get_create_world_screen_vtable();
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// Return
return (Screen *) screen;
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}
// Unique Level Name (https://github.com/ReMinecraftPE/mcpe/blob/d7a8b6baecf8b3b050538abdbc976f690312aa2d/source/client/gui/screens/CreateWorldScreen.cpp#L65-L83)
static std::string getUniqueLevelName(LevelStorageSource *source, const std::string &in) {
std::set<std::string> maps;
std::vector<LevelSummary> vls;
source->vtable->getLevelList(source, &vls);
for (int i = 0; i < int(vls.size()); i++) {
const LevelSummary &ls = vls[i];
maps.insert(ls.folder);
}
std::string out = in;
while (maps.find(out) != maps.end()) {
out += "-";
}
return out;
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}
// Create World
static void create_world(Minecraft *minecraft, std::string name, bool is_creative, std::string seed_str) {
// Get Seed
int seed;
seed_str = Util_stringTrim(&seed_str);
if (!seed_str.empty()) {
int num;
if (sscanf(seed_str.c_str(), "%d", &num) > 0) {
seed = num;
} else {
seed = Util_hashCode(&seed_str);
}
} else {
seed = Common_getEpochTimeS();
}
// Get Folder Name
name = Util_stringTrim(&name);
std::string folder = "";
for (char c : name) {
if (
c >= ' ' && c <= '~' &&
c != '/' &&
c != '\\' &&
c != '`' &&
c != '?' &&
c != '*' &&
c != '<' &&
c != '>' &&
c != '|' &&
c != '"' &&
c != ':'
) {
folder += c;
}
}
if (folder.empty()) {
folder = "World";
}
folder = getUniqueLevelName(Minecraft_getLevelSource(minecraft), folder);
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// Settings
LevelSettings settings;
settings.game_type = is_creative;
settings.seed = seed;
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// Create World
minecraft->vtable->selectLevel(minecraft, &folder, &name, &settings);
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// Multiplayer
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Minecraft_hostMultiplayer(minecraft, 19132);
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// Open ProgressScreen
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ProgressScreen *screen = alloc_ProgressScreen();
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ALLOC_CHECK(screen);
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screen = ProgressScreen_constructor(screen);
Minecraft_setScreen(minecraft, (Screen *) screen);
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}
// Redirect Create World Button
#define create_SelectWorldScreen_tick_injection(prefix) \
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static void prefix##SelectWorldScreen_tick_injection(prefix##SelectWorldScreen_tick_t original, prefix##SelectWorldScreen *screen) { \
if (screen->should_create_world) { \
/* Open Screen */ \
Minecraft_setScreen(screen->minecraft, create_create_world_screen()); \
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/* Finish */ \
screen->should_create_world = false; \
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} else { \
/* Call Original Method */ \
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original(screen); \
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} \
}
create_SelectWorldScreen_tick_injection()
create_SelectWorldScreen_tick_injection(Touch_)
// Init
void _init_game_mode_ui() {
// Hijack Create World Button
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overwrite_virtual_calls(SelectWorldScreen_tick, SelectWorldScreen_tick_injection);
overwrite_virtual_calls(Touch_SelectWorldScreen_tick, Touch_SelectWorldScreen_tick_injection);
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}