Advanced common drop system

Index: conf/battle/drops.conf
===================================================================
--- conf/battle/drops.conf  (版本 15049)
+++ conf/battle/drops.conf  (工作副本)
@@ -146,3 +146,10 @@
 // 333 = show announces for 3.33% or lower drop chance items
 // 10000 = show announces for all items
 rare_drop_announce: 0
+
+// enable common drop advanced
+// if switch on that common drop suport format must be
+// mobid,itemid,droprate
+// but switch off that common drop suport format can be
+// anything,itemid,droprate
+common_drop.adv_flag: 1
Index: db/item_droprate.txt
===================================================================
--- db/item_droprate.txt    (版本 0)
+++ db/item_droprate.txt    (版本 0)
@@ -0,0 +1,11 @@
+// Advanced common drop data base
+// common drop type 1: Advanced mode. -> conf/drop.conf -> common_drop.adv_flag: 1
+// e.g 1: set knight of abyss's knight of abyss card's drop rate to 100%
+// 1219,4120,10000
+// e.g 2: set moonlight_flower's elunium's drop rate to 0.01%
+// 1150,985,1
+//
+// common drop type 2: Ind's mode. -> conf/drop.conf -> common_drop.adv_flag: 0
+// e.g : set any monster's elunium's drop rate to 100%
+// X,985,10000
+// X can be any number
\ No newline at end of file
Index: src/map/battle.c
===================================================================
--- src/map/battle.c    (版本 15049)
+++ src/map/battle.c    (工作副本)
@@ -4023,6 +4023,7 @@
    { "bg_magic_attack_damage_rate",        &battle_config.bg_magic_damage_rate,            60,     0,      INT_MAX,        },
    { "bg_misc_attack_damage_rate",         &battle_config.bg_misc_damage_rate,             60,     0,      INT_MAX,        },
    { "bg_flee_penalty",                    &battle_config.bg_flee_penalty,                 20,     0,      INT_MAX,        },
+   { "common_drop.adv_flag",               &battle_config.common_drop_flag,                 1,     0,      1,              },
 };


Index: src/map/battle.h
===================================================================
--- src/map/battle.h    (版本 15049)
+++ src/map/battle.h    (工作副本)
@@ -497,6 +497,7 @@
    int bg_magic_damage_rate;
    int bg_misc_damage_rate;
    int bg_flee_penalty;
+   int common_drop_flag;
 } battle_config;

 void do_init_battle(void);
Index: src/map/mob.c
===================================================================
--- src/map/mob.c   (版本 15049)
+++ src/map/mob.c   (工作副本)
@@ -66,6 +66,10 @@
 static struct eri *item_drop_ers; //For loot drops delay structures.
 static struct eri *item_drop_list_ers;

+// common drop type 1 advanced mode and type 2 Ind mode. by [dreamunreal]
+int common_drop1[MAX_MOB_DB][0x8000];
+int common_drop2[0x8000];
+
 static struct {
    int qty;
    int class_[350];
@@ -3610,6 +3614,14 @@
            break;
        }
        db->dropitem[i].p = mob_drop_adjust(rate, rate_adjust, ratemin, ratemax);
+
+       // set type 1 or type 2 drop rate. by [dreamunreal]
+       if(battle_config.common_drop_flag)
+           if(common_drop1[class_][db->dropitem[i].nameid])
+               db->dropitem[i].p = common_drop1[class_][db->dropitem[i].nameid];
+       else
+           if(common_drop2[db->dropitem[i].nameid])
+               db->dropitem[i].p = common_drop2[db->dropitem[i].nameid];

        //calculate and store Max available drop chance of the item
        if( db->dropitem[i].p && (class_ < 1324 || class_ > 1363) && (class_ < 1938 || class_ > 1946) )
@@ -4272,8 +4284,71 @@
    return true;
 }

+// set common droprate. by [dreamunreal]
+static bool common_parse_drop(char** str) {
+   int ratio = atoi(str[2]);
+   if( mobdb_checkid(atoi(str[0])) == 0 && battle_config.common_drop_flag)
+       return false; // mobid is dummy ? if type 2 is selected. that mobid check will be skip.
+   if( itemdb_exists(atoi(str[1])) == NULL )
+       return false; // requet unexists item
+   if( ratio < 1 )
+       ratio = 1; // low than 0.01% default to 0.01%
+   if( ratio > 10000 ) {
+       ratio = 10000; // high than 100% default to 100%
+       ShowWarning("[Common Drop] ItemID: %d droprate high than 100%%,default to 100%%.\n",atoi(str[1]));
+   }
+   if(battle_config.common_drop_flag)
+       common_drop1[atoi(str[0])][atoi(str[1])] = ratio;
+   else
+       common_drop2[atoi(str[1])] = ratio;
+   return true;
+}
+// item_droprate.txt loaded. by [dreamunreal]
+void mob_common_droprate(void) {
+       uint32 lines = 0, count = 0;
+       char line[1024], path[256], filename[20] = "item_droprate.txt";
+       FILE* fp;
+       sprintf(path, "%s/%s", db_path,filename);
+       fp = fopen(path, "r");
+       if(fp == NULL) {
+           ShowWarning("[Common Drop] Faild to open file '%s'.\n",path);
+           return;
+       }
+
+       // process rows one by one
+       while(fgets(line, sizeof(line), fp))
+       {
+           char *str[3], *p, *np;
+           int i;
+
+           lines++;
+           if(line[0] == '/' && line[1] == '/')
+               continue;
+           for(i = 0, p = line; i < 3; i++)
+           {
+               str[i] = p;
+               if((np = strchr(p, ',')) != NULL) {
+                   *np = '\0'; p = np + 1;
+               }
+           }
+           if(i < 3) {
+               ShowWarning("[Common Drop] MobID: %d,ItemID: %d, Droprate: %d skip.\n", atoi(str[0]),atoi(str[1]),atoi(str[2]));
+               continue;
+           }
+
+           if (!common_parse_drop(str))
+               continue;
+           count++;
+       }
+       fclose(fp);
+       ShowStatus("Done reading '"CL_WHITE"%lu"CL_RESET"' entries in '"CL_WHITE"%s"CL_RESET"'.\n", count,path);
+   return;
+}
+
 static void mob_load(void)
 {
+   // load common drop function. by [dreamunreal]
+   mob_common_droprate();
 #ifndef TXT_ONLY
    if(db_use_sqldbs)
        mob_read_sqldb();
@@ -4290,8 +4365,22 @@

 void mob_reload(void)
 {
-   int i;
+   int i,j;

+   // clean common drop when reload mob_db. by [dreamunral]
+   if(battle_config.common_drop_flag) // here is type 1
+   {
+       for(i = 0; i < MAX_MOB_DB; i++)
+           for(j = 0; j < 0x8000; j++)
+               if(common_drop1[i][j])
+                   common_drop1[i][j] = 0;
+   }
+   else // here is type 2
+   {
+       for(i = 0; i < 0x8000; i++)
+           if(common_drop2[i]) common_drop2[i] = 0;
+   }
+
    //Mob skills need to be cleared before re-reading them. [Skotlex]
    for (i = 0; i < MAX_MOB_DB; i++)
        if (mob_db_data[i])