This is the experimental and untested code for the use-case of the new commands.

The skill cannot be obtained. It's untested, and it could break server.

(Need to check of duplicate removal of a running NPC crashes server or not).

7 files changed, 157 insertions, 1 deletions

diff --git a/db/re/skill_db.conf b/db/re/skill_db.conf
index 9328a4d40..aa91ce1b6 100644
--- a/db/re/skill_db.conf
+++ b/db/re/skill_db.conf
@@ -40499,6 +40499,38 @@ skill_db: (
 		Quest: true
 	}
 },
+{
+	Id: 20080
+	Name: "TMW2_TRAPS"
+	Description: "Trap Setter"
+	MaxLevel: 10
+	SkillType: {
+		Self: true
+	}
+	SkillInfo: {
+		Quest: true
+	}
+	CoolDown: {
+		Lv1: 120000
+		Lv2: 115000
+		Lv3: 110000
+		Lv4: 105000
+		Lv5: 100000
+		Lv6: 95000
+		Lv7: 90000
+		Lv8: 85000
+		Lv9: 80000
+		Lv10: 75000
+	}
+	CastTime: 100
+	FixedCastTime: 100
+	Requirements: {
+		SPCost: 100
+		Items: {
+			IronOre: 1
+		}
+	}
+},
 
 
 
diff --git a/db/re/skill_tree.conf b/db/re/skill_tree.conf
index 6ecdff753..009931be4 100644
--- a/db/re/skill_tree.conf
+++ b/db/re/skill_tree.conf
@@ -83,6 +83,7 @@ Human: {
 
 		///////////////// Magic v3 (Custom/Trickmaster)
 		TMW2_MANABOMB: 0
+		TMW2_TRAPS: 0
 
 		///////////////// Magic v3 (Custom/Scholarship)
 		TMW2_FIRSTAID: 0
diff --git a/npc/config/duplicates.txt b/npc/config/duplicates.txt
new file mode 100644
index 000000000..cdf24ed61
--- /dev/null
+++ b/npc/config/duplicates.txt
@@ -0,0 +1,33 @@
+// TMW2 script
+// Author: Jesusalva <admin@tmw2.org>
+// Manages duplicates
+
+-	script	#dupemaster	32767,{
+    end;
+
+OnInterIfInitOnce:
+    // (dupe_name$, expire_tick)
+    $@_DUPES = htnew();
+    end;
+
+OnInit:
+    initnpctimer;
+    end;
+
+// Cleans every 15s
+OnTimer15000:
+    .@t = gettimetick(2);
+
+    .@iter = htiterator($@_DUPES);
+    for (.@key$ = htinextkey(.@iter); hticheck(.@iter); .@key$ = htinextkey(.@iter)) {
+        // Check if the NPC expired, remove from hash table if so
+        if (htget($@_DUPES, .@key$, INT_MAX) <= .@t) {
+            npc_duplicate_remove(.@key$);
+            htput($@_DUPES, .@key$, 0);
+        }
+    }
+    htidelete(.@iter);
+
+    initnpctimer;
+    end;
+}
diff --git a/npc/config/traps.txt b/npc/config/traps.txt
index 1bb9d35e7..9f71edf27 100644
--- a/npc/config/traps.txt
+++ b/npc/config/traps.txt
@@ -69,7 +69,7 @@ function	script	IronTrap	{
     .@gid=(playerattached() ? playerattached() : mobattached());
 
     // Just to be sure
-    if (.@gid)
+    if (.@gid > 0)
         harm(.@gid, .@dmg, HARM_MISC);
     else
         Exception("IronTrap \""+.@n$+"\" called without GID!", RB_DEBUGMES);
@@ -111,3 +111,32 @@ function	script	WorldHeartTrap	{
     return;
 }
 
+
+// SkillTrap( {damage=100}, {delay=2s}, {npcname=auto} )
+function	script	SkillTrap	{
+    .@dmg=getarg(0, 100);
+    .@delay=getarg(1, 2);
+    .@n$=getarg(2, strnpcinfo(0));
+
+    // Fire!!
+    awake(.@n$);
+    setnpcdisplay .@n$, NPC_TRAP_TRIGGERED;
+
+    // Skill traps does not distinguish between players or monsters
+    // (and does not work on homunculus, mercenaries, etc.)
+    sc_start SC_STUN, .@delay, 0;
+    .@gid=(playerattached() ? playerattached() : mobattached());
+
+    // Just to be sure
+    if (.@gid > 0)
+        harm(.@gid, .@dmg, HARM_MISC);
+    else
+        Exception("SkillTrap \""+.@n$+"\" called without GID!", RB_DEBUGMES);
+
+    // A minor special effect and we're done.
+    specialeffect 11;
+    sleep(800);
+    setnpcdisplay .@n$, NPC_TRAP_ONLINE;
+    return;
+}
+
diff --git a/npc/functions/hub.txt b/npc/functions/hub.txt
index 33831941c..fc15384af 100644
--- a/npc/functions/hub.txt
+++ b/npc/functions/hub.txt
@@ -609,6 +609,9 @@ function	script	HUB_SkillInvoke	{
             SK_spregen();
             GetManaExp(GD_DEVELOPMENT, 10);
             break;
+        case TMW2_TRAPS:
+            SK_Traps();
+            break;
         // Weapon Overload attack
         case TMW2_OVERLOAD:
             .@PW=200+(@skillLv > 3 ? @skillLv : 0)+(@skillLv > 7 ? @skillLv*2 : 0);
diff --git a/npc/magic/traps.txt b/npc/magic/traps.txt
new file mode 100644
index 000000000..65da75e69
--- /dev/null
+++ b/npc/magic/traps.txt
@@ -0,0 +1,56 @@
+// TMW2 script
+// Author: Jesusalva <admin@tmw2.org>
+//
+// Magic Script: TMW2_TRAPS
+//
+// Deploy a trap behind you.
+
+function	script	SK_Traps	{
+    .@lv = getskilllv(TMW2_TRAPS);
+    .@ab = abizit() * 2;
+    // TODO: Determine duration, power, stun time; use abizit too
+    // More abizit: Longer duration and stun time
+    // Higher level: Longer duration and power
+    .@length=40 + (.@lv+.@ab)*4; // Max duration: 120 seconds
+    .@power =.@lv * 100;
+    .@stun  =.@ab * 6 / 5; // Up to 12s of stun time (2,4,7,9,12 seconds)
+    .@n$ = sprintf("sk#_%06d_%06d_%01d_%05d", getcharid(0), .@power, .@stun, htsize($@_DUPES));
+    getmapxy(.@m$, .@x, .@y, 0);
+
+    npc_duplicate("sk#trap", .@n$, .@m$, .@x, .@y);
+    htput($@_DUPES, .@n$, gettimetick(2) + .@length);
+
+    // Get a few mana experience points (this is NOT used by Mana Stone)
+    GetManaExp(TMW2_TRAPS, rand2(1,.@lv));
+    return;
+}
+
+// Copy from 026-7/config, and htput($@_DUPES, "new_npc_name", expiration_tick)
+// Syntax: sk#_CharID_dmg_stun_{uuid}
+//         3 + 6 + (up to 6) + 1 = 15 out of 22 chars (5 for UUID)
+//         So UUID 
+// We'll also need another trap function
+boss,0,0,0	script	sk#trap	NPC_TRAP,0,0,{
+    end;
+
+OnTouch:
+    .@id=getcharid(0);
+    // FALLTHROUGH
+OnTouchNPC:
+    explode(.@parts$, strnpcinfo(0), "_");
+    .@gid=atoi(.@parts$[1]);
+    .@dmg=atoi(.@parts$[2]);
+    .@stn=atoi(.@parts$[3]);
+    // Do not harm the trap setter/caster
+    if (.@id == .@gid)
+        end;
+    // Actual trap function
+    SkillTrap(.@dmg, .@stn);
+    end;
+
+OnInit:
+    // A small animation of the trap arming itself...
+    sleep(500);
+    setnpcdisplay strnpcinfo(0), NPC_TRAP_ONLINE;
+    end;
+}
diff --git a/npc/scripts.conf b/npc/scripts.conf
index e61b5db50..5732cccf9 100644
--- a/npc/scripts.conf
+++ b/npc/scripts.conf
@@ -35,6 +35,7 @@
 "npc/commands/event.txt",
 
 // config script
+"npc/config/duplicates.txt",
 "npc/config/hairstyle_config.txt",
 "npc/config/location.txt",
 "npc/config/traps.txt",
@@ -143,6 +144,7 @@
 "npc/magic/revive.txt",
 "npc/magic/study.txt",
 "npc/magic/transmigration.txt",
+"npc/magic/traps.txt",
 "npc/magic/scrolls.txt",
 "npc/magic/magic_blackbox.txt",