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, 26 insertions, 29 deletions

diff --git a/src/map/homunculus.c b/src/map/homunculus.c
index 31cb5b012..d7f1c5f0c 100644
--- a/src/map/homunculus.c
+++ b/src/map/homunculus.c
@@ -7,6 +7,7 @@
 #include "../common/timer.h"
 #include "../common/nullpo.h"
 #include "../common/mmo.h"
+#include "../common/random.h"
 #include "../common/showmsg.h"
 #include "../common/strlib.h"
 #include "../common/utils.h"
@@ -38,10 +39,6 @@
 #include <string.h>
 #include <math.h>
 
-
-//Better equiprobability than rand()% [orn]
-#define rand(a, b) (a+(int) ((float)(b-a+1)*rand()/(RAND_MAX+1.0)))
-
 struct s_homunculus_db homunculus_db[MAX_HOMUNCULUS_CLASS];	//[orn]
 struct skill_tree_entry hskill_tree[MAX_HOMUNCULUS_CLASS][MAX_SKILL_TREE];
 
@@ -233,14 +230,14 @@ int merc_hom_levelup(struct homun_data *hd)
 	max  = &hd->homunculusDB->gmax;
 	min  = &hd->homunculusDB->gmin;
 
-	growth_max_hp = rand(min->HP, max->HP);
-	growth_max_sp = rand(min->SP, max->SP);
-	growth_str = rand(min->str, max->str);
-	growth_agi = rand(min->agi, max->agi);
-	growth_vit = rand(min->vit, max->vit);
-	growth_dex = rand(min->dex, max->dex);
-	growth_int = rand(min->int_,max->int_);
-	growth_luk = rand(min->luk, max->luk);
+	growth_max_hp = rnd_value(min->HP, max->HP);
+	growth_max_sp = rnd_value(min->SP, max->SP);
+	growth_str = rnd_value(min->str, max->str);
+	growth_agi = rnd_value(min->agi, max->agi);
+	growth_vit = rnd_value(min->vit, max->vit);
+	growth_dex = rnd_value(min->dex, max->dex);
+	growth_int = rnd_value(min->int_,max->int_);
+	growth_luk = rnd_value(min->luk, max->luk);
 
 	//Aegis discards the decimals in the stat growth values!
 	growth_str-=growth_str%10;
@@ -308,14 +305,14 @@ int merc_hom_evolution(struct homun_data *hd)
 	hom = &hd->homunculus;
 	max = &hd->homunculusDB->emax;
 	min = &hd->homunculusDB->emin;
-	hom->max_hp += rand(min->HP, max->HP);
-	hom->max_sp += rand(min->SP, max->SP);
-	hom->str += 10*rand(min->str, max->str);
-	hom->agi += 10*rand(min->agi, max->agi);
-	hom->vit += 10*rand(min->vit, max->vit);
-	hom->int_+= 10*rand(min->int_,max->int_);
-	hom->dex += 10*rand(min->dex, max->dex);
-	hom->luk += 10*rand(min->luk, max->luk);
+	hom->max_hp += rnd_value(min->HP, max->HP);
+	hom->max_sp += rnd_value(min->SP, max->SP);
+	hom->str += 10*rnd_value(min->str, max->str);
+	hom->agi += 10*rnd_value(min->agi, max->agi);
+	hom->vit += 10*rnd_value(min->vit, max->vit);
+	hom->int_+= 10*rnd_value(min->int_,max->int_);
+	hom->dex += 10*rnd_value(min->dex, max->dex);
+	hom->luk += 10*rnd_value(min->luk, max->luk);
 	hom->intimacy = 500;
 
 	unit_remove_map(&hd->bl, CLR_OUTSIGHT);
@@ -651,7 +648,7 @@ int merc_call_homunculus(struct map_session_data *sd)
 	struct homun_data *hd;
 
 	if (!sd->status.hom_id) //Create a new homun.
-		return merc_create_homunculus_request(sd, HM_CLASS_BASE + rand(0, 7)) ;
+		return merc_create_homunculus_request(sd, HM_CLASS_BASE + rnd_value(0, 7)) ;
 
 	// If homunc not yet loaded, load it
 	if (!sd->hd)
@@ -859,14 +856,14 @@ int merc_hom_shuffle(struct homun_data *hd)
 		//Evolved bonuses
 		struct s_homunculus *hom = &hd->homunculus;
 		struct h_stats *max = &hd->homunculusDB->emax, *min = &hd->homunculusDB->emin;
-		hom->max_hp += rand(min->HP, max->HP);
-		hom->max_sp += rand(min->SP, max->SP);
-		hom->str += 10*rand(min->str, max->str);
-		hom->agi += 10*rand(min->agi, max->agi);
-		hom->vit += 10*rand(min->vit, max->vit);
-		hom->int_+= 10*rand(min->int_,max->int_);
-		hom->dex += 10*rand(min->dex, max->dex);
-		hom->luk += 10*rand(min->luk, max->luk);
+		hom->max_hp += rnd_value(min->HP, max->HP);
+		hom->max_sp += rnd_value(min->SP, max->SP);
+		hom->str += 10*rnd_value(min->str, max->str);
+		hom->agi += 10*rnd_value(min->agi, max->agi);
+		hom->vit += 10*rnd_value(min->vit, max->vit);
+		hom->int_+= 10*rnd_value(min->int_,max->int_);
+		hom->dex += 10*rnd_value(min->dex, max->dex);
+		hom->luk += 10*rnd_value(min->luk, max->luk);
 	}
 
 	hd->homunculus.exp = exp;