From 79944cfa132c623ec5d62c1d61a7e3ab9a33422d Mon Sep 17 00:00:00 2001
From: Abdelrahman <said.abdelrahman89@gmail.com>
Date: Tue, 31 Jan 2023 23:51:43 +0000
Subject: [PATCH] Added variables to build SDL2_ttf with HarfBuzz and added
 functions to the engine to support defining the text direction and script
 name

---
 extern/SDL2/CMakeLists.txt |  2 ++
 include/GameEngine.h       |  9 +++++++++
 src/GameEngine.c           | 26 ++++++++++++++++++++++++++
 3 files changed, 37 insertions(+)

diff --git a/extern/SDL2/CMakeLists.txt b/extern/SDL2/CMakeLists.txt
index 604d7bd..7c5dc2b 100644
--- a/extern/SDL2/CMakeLists.txt
+++ b/extern/SDL2/CMakeLists.txt
@@ -6,6 +6,8 @@ set(SDL2_DISABLE_UNINSTALL OFF CACHE BOOL "" FORCE)
 set(SDL2IMAGE_VENDORED ON CACHE BOOL "" FORCE)
 set(SDL2MIXER_VENDORED ON CACHE BOOL "" FORCE)
 set(SDL2TTF_VENDORED ON CACHE BOOL "" FORCE)
+set(SDL2TTF_HARFBUZZ ON CACHE BOOL "" FORCE)
+set(TTF_USE_HARFBUZZ ON CACHE BOOL "" FORCE)
 set(SDL2IMAGE_TIF ON CACHE BOOL "" FORCE)
 
 add_subdirectory(SDL)
diff --git a/include/GameEngine.h b/include/GameEngine.h
index 86c01bd..c5726b6 100644
--- a/include/GameEngine.h
+++ b/include/GameEngine.h
@@ -14,6 +14,13 @@
 extern "C" {
 #endif // !__cplusplus
 
+typedef enum {
+  FONT_DIRECTION_LTR = TTF_DIRECTION_LTR,
+  FONT_DIRECTION_RTL = TTF_DIRECTION_RTL,
+  FONT_DIRECTION_TTB = TTF_DIRECTION_TTB,
+  FONT_DIRECTION_BTT = TTF_DIRECTION_BTT,
+} FontDirection;
+
 // GENERAL ENGINE API
 
 /**
@@ -80,6 +87,8 @@ TextSize get_text_size_from_font_asset(AssetID id, const char *text);
 void render_text_with_font_asset(AssetID id, const char *text, f32 x, f32 y,
                                  SDL_Color color);
 void set_font_asset_size(AssetID id, u32 size);
+i32 set_font_direction(AssetID id, FontDirection direction);
+i32 set_font_script_name(AssetID id, const char *script);
 // END RENDERING API
 
 // AUDIO API
diff --git a/src/GameEngine.c b/src/GameEngine.c
index 9e3e6ca..b98e6f0 100644
--- a/src/GameEngine.c
+++ b/src/GameEngine.c
@@ -413,6 +413,32 @@ void set_font_asset_size(AssetID id, u32 size) {
   TTF_SetFontSize(font, size);
 }
 
+i32 set_font_direction(AssetID id, FontDirection direction) {
+  if (id < 0) {
+    return -2;
+  }
+
+  TTF_Font *font = get_font(GameEngine.asset_manager, id);
+  if (!font) {
+    return -2;
+  }
+
+  return TTF_SetFontDirection(font, (TTF_Direction)direction);
+}
+
+i32 set_font_script_name(AssetID id, const char *script) {
+  if (id < 0) {
+    return -2;
+  }
+
+  TTF_Font *font = get_font(GameEngine.asset_manager, id);
+  if (!font) {
+    return -2;
+  }
+
+  return TTF_SetFontScriptName(font, script);
+}
+
 i8 play_audio_asset(AssetID id, i16 loops, bool fade_in,
                     u32 fade_length_in_ms) {
   if (id < 0) {