Enabled Mersenne Twister MT19937 as random number generator instead of standard `rand()` function (follow-up to r14865, r14870).

 - It fixes issues caused by RAND_MAX being only 32k in Windows system (bugreport:1927, bugreport:86).

git-svn-id: https://rathena.svn.sourceforge.net/svnroot/rathena/trunk@15483 54d463be-8e91-2dee-dedb-b68131a5f0ec

1 files changed, 8 insertions, 7 deletions

diff --git a/src/map/pet.c b/src/map/pet.c
index d067b133f..43c3bcb5c 100644
--- a/src/map/pet.c
+++ b/src/map/pet.c
@@ -5,6 +5,7 @@
 #include "../common/timer.h"
 #include "../common/nullpo.h"
 #include "../common/malloc.h"
+#include "../common/random.h"
 #include "../common/showmsg.h"
 #include "../common/strlib.h"
 #include "../common/utils.h"
@@ -109,7 +110,7 @@ int pet_attackskill(struct pet_data *pd, int target_id)
 	if (DIFF_TICK(pd->ud.canact_tick, gettick()) > 0)
 		return 0;
 	
-	if (rand()%100 < (pd->a_skill->rate +pd->pet.intimate*pd->a_skill->bonusrate/1000))
+	if (rnd()%100 < (pd->a_skill->rate +pd->pet.intimate*pd->a_skill->bonusrate/1000))
 	{	//Skotlex: Use pet's skill 
 		bl=map_id2bl(target_id);
 		if(bl == NULL || pd->bl.m != bl->m || bl->prev == NULL || status_isdead(bl) ||
@@ -159,9 +160,9 @@ int pet_target_check(struct map_session_data *sd,struct block_list *bl,int type)
 		if(pd->petDB->defence_attack_rate > 0 && rate <= 0)
 			rate = 1;
 	}
-	if(rand()%10000 < rate) 
+	if(rnd()%10000 < rate) 
 	{
-		if(pd->target_id == 0 || rand()%10000 < pd->petDB->change_target_rate)
+		if(pd->target_id == 0 || rnd()%10000 < pd->petDB->change_target_rate)
 			pd->target_id = bl->id;
 	}
 
@@ -283,7 +284,7 @@ static int pet_performance(struct map_session_data *sd, struct pet_data *pd)
 		val = 1;
 
 	pet_stop_walking(pd,2000<<8);
-	clif_pet_performance(pd, rand()%val + 1);
+	clif_pet_performance(pd, rnd()%val + 1);
 	pet_lootitem_drop(pd,NULL);
 	return 1;
 }
@@ -521,7 +522,7 @@ int pet_catch_process2(struct map_session_data* sd, int target_id)
 	if(battle_config.pet_catch_rate != 100)
 		pet_catch_rate = (pet_catch_rate*battle_config.pet_catch_rate)/100;
 
-	if(rand()%10000 < pet_catch_rate)
+	if(rnd()%10000 < pet_catch_rate)
 	{
 		unit_remove_map(&md->bl,CLR_OUTSIGHT);
 		status_kill(&md->bl);
@@ -787,7 +788,7 @@ static int pet_randomwalk(struct pet_data *pd,unsigned int tick)
 		int i,x,y,c,d=12-pd->move_fail_count;
 		if(d<5) d=5;
 		for(i=0;i<retrycount;i++){
-			int r=rand();
+			int r=rnd();
 			x=pd->bl.x+r%(d*2+1)-d;
 			y=pd->bl.y+r/(d*2+1)%(d*2+1)-d;
 			if(map_getcell(pd->bl.m,x,y,CELL_CHKPASS) && unit_walktoxy(&pd->bl,x,y,0)){
@@ -810,7 +811,7 @@ static int pet_randomwalk(struct pet_data *pd,unsigned int tick)
 			else
 				c+=pd->status.speed;
 		}
-		pd->next_walktime = tick+rand()%3000+3000+c;
+		pd->next_walktime = tick+rnd()%3000+3000+c;
 
 		return 1;
 	}