From bc442034e2a588e334b64956560bbebf794448e6 Mon Sep 17 00:00:00 2001
From: TheBrokenRail <connor24nolan@live.com>
Date: Sat, 21 Nov 2020 00:13:09 -0500
Subject: [PATCH] Add 3D Anaglyph + More Function Controls

---
 debian/client/common/usr/bin/minecraft-pi |  3 ++-
 mods/src/compat.c                         | 12 ++++++++++
 mods/src/extra.c                          | 28 +++++++++++++++++++++++
 mods/src/extra.h                          |  2 ++
 4 files changed, 44 insertions(+), 1 deletion(-)

diff --git a/debian/client/common/usr/bin/minecraft-pi b/debian/client/common/usr/bin/minecraft-pi
index 497eb2a..de5a47c 100755
--- a/debian/client/common/usr/bin/minecraft-pi
+++ b/debian/client/common/usr/bin/minecraft-pi
@@ -18,7 +18,8 @@ if [ -z "${MCPI_SUBSHELL}" ]; then
         FALSE 'Peaceful Mode' \
         TRUE 'Animated Water' \
         TRUE 'Remove Invalid Item Background' \
-        TRUE 'Smooth Lighting')"
+        TRUE 'Smooth Lighting' \
+        FALSE '3D Anaglyph')"
     MCPI_USERNAME="$(zenity --class 'Minecraft - Pi edition' --entry --text 'Minecraft Username:' --entry-text 'StevePi')"
 fi
 export MCPI_FEATURES
diff --git a/mods/src/compat.c b/mods/src/compat.c
index 78f4508..8a0d49c 100644
--- a/mods/src/compat.c
+++ b/mods/src/compat.c
@@ -104,6 +104,12 @@ static SDLKey glfw_key_to_sdl_key(int key) {
         // Screenshot
         case GLFW_KEY_F2:
             return SDLK_F2;
+        // Hide GUI
+        case GLFW_KEY_F1:
+            return SDLK_F1;
+        // Third Person
+        case GLFW_KEY_F5:
+            return SDLK_F5;
         // Unknown
         default:
             return SDLK_UNKNOWN;
@@ -339,6 +345,12 @@ HOOK(SDL_PollEvent, int, (SDL_Event *event)) {
             } else if (event->key.keysym.sym == SDLK_F2) {
                 screenshot();
                 handled = 1;
+            } else if (event->key.keysym.sym == SDLK_F1) {
+                extra_hide_gui();
+                handled = 1;
+            } else if (event->key.keysym.sym == SDLK_F5) {
+                extra_third_person();
+                handled = 1;
             }
         }
 
diff --git a/mods/src/extra.c b/mods/src/extra.c
index 4c5d42b..2df9826 100644
--- a/mods/src/extra.c
+++ b/mods/src/extra.c
@@ -29,6 +29,16 @@ static Player_isUsingItem_t Player_isUsingItem = (Player_isUsingItem_t) 0x8f15c;
 // Enable Bow & Arrow Fix
 static int fix_bow = 0;
 
+// Store Function Input
+static int hide_gui_toggle = 0;
+void extra_hide_gui() {
+    hide_gui_toggle++;
+}
+static int third_person_toggle = 0;
+void extra_third_person() {
+    third_person_toggle++;
+}
+
 // Handle Input Fixes
 static void Minecraft_tickInput_injection(unsigned char *minecraft) {
     // Call Original Method
@@ -48,6 +58,19 @@ static void Minecraft_tickInput_injection(unsigned char *minecraft) {
 
     // Clear Unused Sign Input
     extra_clear_input();
+
+    // Handle Functions
+    unsigned char *options = minecraft + 0x3c;
+    if (hide_gui_toggle % 2 != 0) {
+        // Toggle Hide GUI
+        *(options + 0xec) = *(options + 0xec) ^ 1;
+    }
+    hide_gui_toggle = 0;
+    if (third_person_toggle % 2 != 0) {
+        // Toggle Third Person
+        *(options + 0xed) = *(options + 0xed) ^ 1;
+    }
+    third_person_toggle = 0;
 }
 
 typedef void (*Gui_tickItemDrop_t)(unsigned char *);
@@ -125,6 +148,7 @@ static Minecraft_init_t Minecraft_init = (Minecraft_init_t) 0x1700c;
 
 static int fancy_graphics;
 static int peaceful_mode;
+static int anaglyph;
 // Configure Options
 static void Minecraft_init_injection(unsigned char *this) {
     // Call Original Method
@@ -137,6 +161,8 @@ static void Minecraft_init_injection(unsigned char *this) {
     *(options + 0x105) = 1;
     // Peaceful Mode
     *(int32_t *) (options + 0xe8) = peaceful_mode ? 0 : 2;
+    // 3D Anaglyph
+    *(options + 0x15) = anaglyph;
 }
 
 // Is Dedicated Server
@@ -263,6 +289,8 @@ __attribute__((constructor)) static void init() {
     fancy_graphics = extra_has_feature("Fancy Graphics");
     // Peaceful Mode
     peaceful_mode = extra_has_feature("Peaceful Mode");
+    // 3D Anaglyph
+    anaglyph = extra_has_feature("3D Anaglyph");
 
     // Set Options
     overwrite_calls((void *) Minecraft_init, Minecraft_init_injection);
diff --git a/mods/src/extra.h b/mods/src/extra.h
index 2bb45d4..4cd38c9 100644
--- a/mods/src/extra.h
+++ b/mods/src/extra.h
@@ -13,6 +13,8 @@ void extra_key_press(char key);
 void extra_clear_input();
 
 void extra_set_is_right_click(int val);
+void extra_hide_gui();
+void extra_third_person();
 
 int extra_get_smooth_lighting();