Fix Various Input Bugs

VERSION

@@ -1 +1 @@
-2.0.6
+2.0.7

docs/CHANGELOG.md

@@ -1,5 +1,9 @@
 # Changelog
 
+**2.0.7**
+* Fix Sign Text Not Updating In Multiplayer When Exiting Editing UI Using Escape Button
+* Fix Item Dropping Not Working
+
 **2.0.6**
 * Fix Toolbar Size In Normal GUI
 

libreborn/include/libreborn/minecraft.h

@@ -110,6 +110,9 @@ static Minecraft_grabMouse_t Minecraft_grabMouse = (Minecraft_grabMouse_t) 0x15d
 typedef void (*Minecraft_leaveGame_t)(unsigned char *minecraft, bool save_remote_level);
 static Minecraft_leaveGame_t Minecraft_leaveGame = (Minecraft_leaveGame_t) 0x15ea0;
 
+typedef void (*Minecraft_handleBack_t)(unsigned char *minecraft, bool param_1);
+static uint32_t Minecraft_handleBack_vtable_offset = 0x34;
+
 static uint32_t Minecraft_screen_width_property_offset = 0x20; // int32_t
 static uint32_t Minecraft_network_handler_property_offset = 0x174; // NetEventCallback *
 static uint32_t Minecraft_rak_net_instance_property_offset = 0x170; // RakNetInstance *

mods/CMakeLists.txt

@@ -8,7 +8,7 @@ add_definitions(-D_GLIBCXX_USE_CXX11_ABI=0)
 ## Mods
 
 add_library(compat SHARED src/compat/compat.c src/compat/egl.c src/compat/x11.c)
-target_link_libraries(compat feature input media-layer-core dl)
+target_link_libraries(compat feature input sign media-layer-core dl)
 
 add_library(readdir SHARED src/readdir/readdir.c)
 
@@ -32,8 +32,11 @@ target_link_libraries(camera reborn media-layer-core)
 add_library(game-mode SHARED src/game-mode/game-mode.c src/game-mode/game-mode.cpp)
 target_link_libraries(game-mode reborn)
 
-add_library(input SHARED src/input/input.c src/input/input.cpp)
+add_library(sign SHARED src/sign/sign.cpp)
-target_link_libraries(input reborn feature media-layer-core chat)
+target_link_libraries(sign reborn feature)
+
+add_library(input SHARED src/input/input.c)
+target_link_libraries(input reborn feature media-layer-core chat sign)
 
 add_library(death SHARED src/death/death.cpp)
 target_link_libraries(death reborn)
@@ -63,7 +66,7 @@ add_library(test SHARED src/test/test.c)
 target_link_libraries(test reborn home)
 
 add_library(init SHARED src/init/init.c)
-target_link_libraries(init compat game-mode camera input misc death options touch textures chat home version test)
+target_link_libraries(init compat game-mode camera input sign misc death options touch textures chat home version test)
 if(MCPI_SERVER_MODE)
     target_link_libraries(init server)
 else()
@@ -71,7 +74,7 @@ else()
 endif()
 
 ## Install Mods
-install(TARGETS init compat readdir feature override game-mode camera input misc death options touch textures chat home version test DESTINATION "${MCPI_INSTALL_DIR}/mods")
+install(TARGETS init compat readdir feature override game-mode camera input sign misc death options touch textures chat home version test DESTINATION "${MCPI_INSTALL_DIR}/mods")
 if(MCPI_SERVER_MODE)
     install(TARGETS server DESTINATION "${MCPI_INSTALL_DIR}/mods")
 else()

mods/src/compat/compat.c

@@ -8,6 +8,7 @@
 
 #include "../feature/feature.h"
 #include "../input/input.h"
+#include "../sign/sign.h"
 #include "../chat/chat.h"
 #include "../init/init.h"
 #include "compat.h"
@@ -71,6 +72,10 @@ HOOK(SDL_PollEvent, int, (SDL_Event *event)) {
                     }
                     // Mark Handled
                     handled = 1;
+                } else if (event->key.keysym.sym == SDLK_ESCAPE) {
+                    // Treat Escape As Back Button Press (This Fixes Issues With Signs)
+                    input_back();
+                    handled = 1;
                 }
                 break;
             }
@@ -86,7 +91,7 @@ HOOK(SDL_PollEvent, int, (SDL_Event *event)) {
             }
             case SDL_USEREVENT: {
                 // SDL_UserEvent Is Never Used In MCPI, So It Is Repurposed For Character Events
-                input_key_press((char) event->user.code);
+                sign_key_press((char) event->user.code);
                 handled = 1;
                 break;
             }

mods/src/game-mode/game-mode.cpp

@@ -55,4 +55,5 @@ void _init_game_mode_cpp() {
     // Make The SimpleChooseLevelScreen Back Button Go To SelectWorldScreen Instead Of StartMenuScreen
     unsigned char simple_choose_level_screen_back_button_patch[4] = {0x05, 0x10, 0xa0, 0xe3}; // "mov r1, #0x5"
     patch((void *) 0x31144, simple_choose_level_screen_back_button_patch);
+    patch((void *) 0x3134c, simple_choose_level_screen_back_button_patch);
 }

mods/src/init/init.c

@@ -10,6 +10,7 @@ __attribute__((constructor)) static void init() {
 #endif
     init_game_mode();
     init_input();
+    init_sign();
     init_misc();
     init_death();
     init_camera();

mods/src/init/init.h

@@ -13,6 +13,7 @@ void init_multiplayer();
 #endif
 void init_game_mode();
 void init_input();
+void init_sign();
 void init_misc();
 void init_death();
 void init_camera();

mods/src/input/README.md

@@ -3,7 +3,6 @@ This mod fixes various input-related bugs, including:
 - Bows being broken.
 - The cursor interacting with the hotbar while the it is locked.
 - Being unable to attack mobs.
-- Being unable to specify sign text.
 
 It also adds various features, including:
 - Hide GUI and third person toggle keys.

mods/src/input/input.c

@@ -1,11 +1,10 @@
 #include <libreborn/libreborn.h>
+#include <libreborn/minecraft.h>
 
 #include "../feature/feature.h"
-#include "input.h"
 #include "../init/init.h"
 #include "../chat/chat.h"
-
+#include "../sign/sign.h"
-#include <libreborn/minecraft.h>
 
 // Store Right-Click Status
 static int is_right_click = 0;
@@ -26,12 +25,18 @@ void input_third_person() {
     third_person_toggle++;
 }
 
-// Set mouse Grab State
+// Set Mouse Grab State
 static int mouse_grab_state = 0;
 void input_set_mouse_grab_state(int state) {
     mouse_grab_state = state;
 }
 
+// Store Back Button Presses
+static int back_button_presses =0;
+void input_back() {
+    back_button_presses++;
+}
+
 // Handle Input Fixes
 static void Minecraft_tickInput_injection(unsigned char *minecraft) {
     // Call Original Method
@@ -50,7 +55,7 @@ static void Minecraft_tickInput_injection(unsigned char *minecraft) {
     }
 
     // Clear Unused Sign Input
-    input_clear_input();
+    sign_clear_input();
 
     // Handle Functions
     unsigned char *options = minecraft + Minecraft_options_property_offset;
@@ -77,13 +82,21 @@ static void Minecraft_tickInput_injection(unsigned char *minecraft) {
         (*Minecraft_releaseMouse)(minecraft);
     }
     mouse_grab_state = 0;
+
+    // Handle Back Button
+    unsigned char *minecraft_vtable = *(unsigned char **) minecraft;
+    Minecraft_handleBack_t Minecraft_handleBack = *(Minecraft_handleBack_t *) (minecraft_vtable + Minecraft_handleBack_vtable_offset);
+    for (int i = 0; i < back_button_presses; i++) {
+        (*Minecraft_handleBack)(minecraft, 0);
+    }
+    back_button_presses = 0;
 }
 
 #include <SDL/SDL.h>
 
 // Block UI Interaction When Mouse Is Locked
 static bool Gui_tickItemDrop_Minecraft_isCreativeMode_call_injection(unsigned char *minecraft) {
-    if (SDL_ShowCursor(SDL_QUERY) == SDL_ENABLE) {
+    if (SDL_WM_GrabInput(SDL_GRAB_QUERY) == SDL_GRAB_OFF) {
         // Call Original Method
         return (*Minecraft_isCreativeMode)(minecraft);
     } else {
@@ -94,7 +107,7 @@ static bool Gui_tickItemDrop_Minecraft_isCreativeMode_call_injection(unsigned ch
 
 // Block UI Interaction When Mouse Is Locked
 static void Gui_handleClick_injection(unsigned char *this, int32_t param_2, int32_t param_3, int32_t param_4) {
-    if (SDL_ShowCursor(SDL_QUERY) == SDL_ENABLE) {
+    if (SDL_WM_GrabInput(SDL_GRAB_QUERY) == SDL_GRAB_OFF) {
         // Call Original Method
         (*Gui_handleClick)(this, param_2, param_3, param_4);
     }
@@ -147,7 +160,4 @@ void init_input() {
         // Allow Attacking Mobs
         patch_address(MouseBuildInput_tickBuild_vtable_addr, (void *) MouseBuildInput_tickBuild_injection);
     }
-
-    // Init C++
-    _init_input_cpp();
 }

mods/src/input/input.h

@@ -4,19 +4,15 @@
 extern "C" {
 #endif
 
-void input_key_press(char key);
-void input_clear_input();
-
 void input_set_is_right_click(int val);
 void input_hide_gui();
 void input_third_person();
+void input_back();
 
 void input_set_is_left_click(int val);
 
 void input_set_mouse_grab_state(int state);
 
-__attribute__((visibility("internal"))) void _init_input_cpp();
-
 #ifdef __cplusplus
 }
 #endif

mods/src/misc/misc.cpp

@@ -103,8 +103,8 @@ void _init_misc_cpp() {
     // Implement AppPlatform::readAssetFile So Translations Work
     overwrite((void *) AppPlatform_readAssetFile, (void *) AppPlatform_readAssetFile_injection);
 
+    // Add Extra Items To Creative Inventory (Only Replace Specific Function Call)
     if (feature_has("Expand Creative Inventory")) {
-        // Add Extra Items To Creative Inventory (Only Replace Specific Function Call)
         overwrite_call((void *) 0x8e0fc, (void *) Inventory_setupDefault_FillingContainer_addItem_call_injection);
     }
 

mods/src/sign/README.md

@@ -0,0 +1,2 @@
+# ``sign`` Mod
+This mod fixes sign placement.

mods/src/sign/sign.cpp

@@ -1,12 +1,12 @@
 #include <vector>
 
 #include <libreborn/libreborn.h>
-
-#include "../feature/feature.h"
-#include "input.h"
-
 #include <libreborn/minecraft.h>
 
+#include "../init/init.h"
+#include "../feature/feature.h"
+#include "sign.h"
+
 // Open Sign Screen
 static void LocalPlayer_openTextEdit_injection(unsigned char *local_player, unsigned char *sign) {
     if (*(int32_t *) (sign + TileEntity_id_property_offset) == 4) {
@@ -26,12 +26,12 @@ static int is_valid_key(char key) {
 
 // Store Text Input
 std::vector<char> input;
-void input_key_press(char key) {
+void sign_key_press(char key) {
     if (is_valid_key(key)) {
         input.push_back(key);
     }
 }
-void input_clear_input() {
+void sign_clear_input() {
     input.clear();
 }
 
@@ -52,13 +52,14 @@ static void TextEditScreen_updateEvents_injection(unsigned char *screen) {
             }
         }
     }
-    input_clear_input();
+    sign_clear_input();
 }
 
-void _init_input_cpp() {
+// Init
+void init_sign() {
     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);
     }
-}
+}

mods/src/sign/sign.h

@@ -0,0 +1,12 @@
+#pragma once
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+void sign_key_press(char key);
+void sign_clear_input();
+
+#ifdef __cplusplus
+}
+#endif