From a11db78940ba20570f11eda90b21028c09da03f2 Mon Sep 17 00:00:00 2001
From: Asheraf <acheraf1998@gmail.com>
Date: Sun, 12 Nov 2017 23:56:11 +0000
Subject: Implement skill scale packet for client versions >= 20151223.

---
 src/map/clif.c           | 31 +++++++++++++++++++++++++++++++
 src/map/clif.h           |  1 +
 src/map/packets_struct.h | 13 +++++++++++++
 src/map/skill.c          |  6 ++++++
 src/map/skill.h          |  1 +
 5 files changed, 52 insertions(+)

(limited to 'src')

diff --git a/src/map/clif.c b/src/map/clif.c
index 4dc36be6d..7fa05af05 100644
--- a/src/map/clif.c
+++ b/src/map/clif.c
@@ -5068,6 +5068,10 @@ void clif_useskill(struct block_list* bl, int src_id, int dst_id, int dst_x, int
 	} else {
 		clif->send(buf,packet_len(cmd), bl, AREA);
 	}
+#if PACKETVER >= 20151223
+	if ((skill->get_inf2(skill_id) & INF2_SHOW_SKILL_SCALE) != 0)
+		clif->skill_scale(bl, src_id, bl->x, bl->y, skill_id, skill_lv, casttime);
+#endif
 }
 
 /// Notifies clients in area, that an object canceled casting (ZC_DISPEL).
@@ -19860,6 +19864,32 @@ void clif_parse_rodex_cancel_write_mail(int fd, struct map_session_data *sd)
 	rodex->clean(sd, 1);
 }
 
+void clif_skill_scale(struct block_list *bl, int src_id, int x, int y, uint16 skill_id, uint16 skill_lv, int casttime)
+{
+#if PACKETVER >= 20151223
+	struct PACKET_ZC_SKILL_SCALE p;
+
+	p.PacketType = skillscale;
+	p.AID = src_id;
+	p.skill_id = skill_id;
+	p.skill_lv = skill_lv;
+	p.x = x;
+	p.y = y;
+	p.casttime = casttime;
+
+	if (clif->isdisguised(bl)) {
+		clif->send(&p, sizeof(p), bl, AREA_WOS);
+		p.AID = -src_id;
+		clif->send(&p, sizeof(p), bl, SELF);
+	} else {
+		clif->send(&p, sizeof(p), bl, AREA);
+	}
+#else
+	ShowWarning("clif_skill_scale: showing skill scale available only for clients >= 20151223.");
+	return;
+#endif
+}
+
 /*==========================================
  * Main client packet processing function
  *------------------------------------------*/
@@ -20929,4 +20959,5 @@ void clif_defaults(void) {
 	clif->rodex_request_items = clif_rodex_request_items;
 	clif->rodex_icon = clif_rodex_icon;
 	clif->rodex_send_mails_all = clif_rodex_send_mails_all;
+	clif->skill_scale = clif_skill_scale;
 }
diff --git a/src/map/clif.h b/src/map/clif.h
index 851c823ea..112db3dec 100644
--- a/src/map/clif.h
+++ b/src/map/clif.h
@@ -1395,6 +1395,7 @@ struct clif_interface {
 	void (*pRodexRequestItems) (int fd, struct map_session_data *sd);
 	void (*rodex_request_items) (struct map_session_data *sd, int8 opentype, int64 mail_id, int8 result);
 	void (*rodex_icon) (int fd, bool show);
+	void (*skill_scale) (struct block_list *bl, int src_id, int x, int y, uint16 skill_id, uint16 skill_lv, int casttime);
 };
 
 #ifdef HERCULES_CORE
diff --git a/src/map/packets_struct.h b/src/map/packets_struct.h
index 03b555e2b..e1395e949 100644
--- a/src/map/packets_struct.h
+++ b/src/map/packets_struct.h
@@ -330,6 +330,9 @@ enum packet_headers {
 #else // PACKETVER >= 20160316
 	rodexcheckplayer = 0x0A51,
 #endif
+#if PACKETVER >= 20151223
+	skillscale = 0xA41,
+#endif
 };
 
 #if !defined(sun) && (!defined(__NETBSD__) || __NetBSD_Version__ >= 600000000) // NetBSD 5 and Solaris don't like pragma pack but accept the packed attribute
@@ -1478,6 +1481,16 @@ struct PACKET_ZC_ACK_ITEM_FROM_MAIL {
 	int8 result;
 } __attribute__((packed));
 
+struct PACKET_ZC_SKILL_SCALE {
+	int16 PacketType;
+	uint32 AID;
+	int16 skill_id;
+	int16 skill_lv;
+	int16 x;
+	int16 y;
+	uint32 casttime;
+} __attribute__((packed));
+
 #if !defined(sun) && (!defined(__NETBSD__) || __NetBSD_Version__ >= 600000000) // NetBSD 5 and Solaris don't like pragma pack but accept the packed attribute
 #pragma pack(pop)
 #endif // not NetBSD < 6 / Solaris
diff --git a/src/map/skill.c b/src/map/skill.c
index 726deaa9a..3b5c022ba 100644
--- a/src/map/skill.c
+++ b/src/map/skill.c
@@ -19651,6 +19651,12 @@ void skill_validate_skillinfo(struct config_setting_t *conf, struct s_skill_db *
 				} else {
 					sk->inf2 &= ~INF2_FREE_CAST_REDUCED;
 				}
+			} else if (strcmpi(type, "ShowSkillScale") == 0) {
+				if (on) {
+					sk->inf2 |= INF2_SHOW_SKILL_SCALE;
+				} else {
+					sk->inf2 &= ~INF2_SHOW_SKILL_SCALE;
+				}
 			} else if (strcmpi(type, "None") != 0) {
 				skilldb_invalid_error(type, config_setting_name(t), sk->nameid);
 			}
diff --git a/src/map/skill.h b/src/map/skill.h
index bba440107..8fc630716 100644
--- a/src/map/skill.h
+++ b/src/map/skill.h
@@ -120,6 +120,7 @@ enum e_skill_inf2 {
 	INF2_CHORUS_SKILL      = 0x04000, // Chorus skill
 	INF2_FREE_CAST_NORMAL  = 0x08000,
 	INF2_FREE_CAST_REDUCED = 0x10000,
+	INF2_SHOW_SKILL_SCALE  = 0x20000,
 };
 
 
-- 
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