From 72bd7932266ce0707fc4375db05d22d4a21be406 Mon Sep 17 00:00:00 2001
From: fgsfds <pvt.fgsfds@gmail.com>
Date: Mon, 15 Feb 2021 05:27:30 +0300
Subject: [PATCH] override detail levels in config

---
 config.c     | 12 ++++++++++++
 config.h     |  4 ++++
 hooks/game.c | 23 +++++++++++++++++++++--
 3 files changed, 37 insertions(+), 2 deletions(-)

diff --git a/config.c b/config.c
index 9574fc4..2daa359 100644
--- a/config.c
+++ b/config.c
@@ -23,15 +23,21 @@
   CONFIG_VAR_INT(disable_mipmaps); \
   CONFIG_VAR_INT(language); \
   CONFIG_VAR_INT(crouch_toggle); \
+  CONFIG_VAR_INT(character_shadows); \
+  CONFIG_VAR_INT(drop_highest_lod); \
+  CONFIG_VAR_FLOAT(decal_limit); \
+  CONFIG_VAR_FLOAT(debris_limit); \
   CONFIG_VAR_STR(mod_file);
 
 Config config;
 
 static inline void parse_var(const char *name, const char *value) {
   #define CONFIG_VAR_INT(var) if (!strcmp(name, #var)) { config.var = atoi(value); return; }
+  #define CONFIG_VAR_FLOAT(var) if (!strcmp(name, #var)) { config.var = atof(value); return; }
   #define CONFIG_VAR_STR(var) if (!strcmp(name, #var)) { strlcpy(config.var, value, sizeof(config.var)); return; }
   CONFIG_VARS
   #undef CONFIG_VAR_INT
+  #undef CONFIG_VAR_FLOAT
   #undef CONFIG_VAR_STR
 }
 
@@ -48,6 +54,10 @@ int read_config(const char *file) {
   config.disable_mipmaps = 0;
   config.language = 0; // english
   config.crouch_toggle = 1;
+  config.character_shadows = 1; // 1 - one blob; 2 - foot shadows
+  config.drop_highest_lod = 1; // does this even do anything?
+  config.decal_limit = 0.33f;
+  config.debris_limit = 0.33f;
 
   FILE *f = fopen(file, "r");
   if (f == NULL)
@@ -87,9 +97,11 @@ int write_config(const char *file) {
     return -1;
 
   #define CONFIG_VAR_INT(var) fprintf(f, "%s %d\n", #var, config.var)
+  #define CONFIG_VAR_FLOAT(var) fprintf(f, "%s %g\n", #var, config.var)
   #define CONFIG_VAR_STR(var) if (config.var[0]) fprintf(f, "%s %s\n", #var, config.var)
   CONFIG_VARS
   #undef CONFIG_VAR_INT
+  #undef CONFIG_VAR_FLOAT
   #undef CONFIG_VAR_STR
 
   fclose(f);
diff --git a/config.h b/config.h
index 7cddc2c..d3ff555 100644
--- a/config.h
+++ b/config.h
@@ -33,6 +33,10 @@ typedef struct {
   int disable_mipmaps;
   int language;
   int crouch_toggle;
+  int character_shadows;
+  int drop_highest_lod;
+  float decal_limit;
+  float debris_limit;
   char mod_file[0x100];
 } Config;
 
diff --git a/hooks/game.c b/hooks/game.c
index 913c547..06d1c59 100644
--- a/hooks/game.c
+++ b/hooks/game.c
@@ -331,6 +331,22 @@ int R_File_setFileSystemRoot(void *this, const char *root) {
   return res;
 }
 
+int X_DetailLevel_getCharacterShadows(void) {
+  return config.character_shadows;
+}
+
+int X_DetailLevel_getDropHighestLOD(void) {
+  return config.drop_highest_lod;
+}
+
+float X_DetailLevel_getDecalLimitMultiplier(void) {
+  return config.decal_limit;
+}
+
+float X_DetailLevel_getDebrisProjectileLimitMultiplier(void) {
+  return config.debris_limit;
+}
+
 void patch_game(void) {
   // make it crash in an obvious location when it calls JNI methods
   hook_thumb(so_find_addr("_Z24NVThreadGetCurrentJNIEnvv"), (uintptr_t)0x1337);
@@ -392,8 +408,11 @@ void patch_game(void) {
 
   hook_thumb(so_find_addr("_Z15ExitAndroidGamev"), (uintptr_t)ExitAndroidGame);
 
-  // enable shadows
-  hook_thumb(so_find_addr("_ZN13X_DetailLevel19getCharacterShadowsEv"), (uintptr_t)ret1);
+  // hook detail level getters to our own settings
+  hook_thumb(so_find_addr("_ZN13X_DetailLevel19getCharacterShadowsEv"), (uintptr_t)X_DetailLevel_getCharacterShadows);
+  hook_thumb(so_find_addr("_ZN13X_DetailLevel34getDebrisProjectileLimitMultiplierEv"), (uintptr_t)X_DetailLevel_getDebrisProjectileLimitMultiplier);
+  hook_thumb(so_find_addr("_ZN13X_DetailLevel23getDecalLimitMultiplierEv"), (uintptr_t)X_DetailLevel_getDecalLimitMultiplier);
+  hook_thumb(so_find_addr("_ZN13X_DetailLevel13dropHighesLODEv"), (uintptr_t)X_DetailLevel_getDropHighestLOD);
 
   // crouch toggle
   if (config.crouch_toggle) {