UODiamondCodex

Monster Defense

A cooperative tower-defense style event. Waves of monsters spawn at a start point and march along a fixed path toward an end point. Players (armed from free dispensers) must kill them before any monster reaches the end. There are 20 escalating levels; letting a single monster through loses the event for everyone.

Source: server/scripts/UOD/Events/UOD - Monster Defense.scp

How to run it

A GM controls the event through the i_md_stone control stone (ID=i_gravestone_7), which opens the md_stone menu on double-click. Players join by stepping on a join tile.

Command / Menu button Effect
Dclick i_md_stone Opens the md_stone GM menu.
START Counts players in the region into tag.player, sets tag.level=1, and starts the spawn timer on the management stone (mdstone = 040049b68) after a 10-second warning.
STOP Runs end_event: removes all NPCs in the region and resets the stone's level/number/player tags.
LOST Plays the lose sound, notifies players, and sends everyone back with a participation prize (md_goback 1).
WIN Plays the win sound, notifies players, and sends everyone back with the winning prize (md_goback 2).
RESET Placeholder (only says "allo"); no effect.
Step on i_md_player_start (Join the event!) Teleports the player to 5127,511,7, adds e_monsterdefense, and equips a marker item.

Note: LOST is normally triggered automatically when a monster reaches the end tile (i_defense_end @step → end_event), but the menu buttons let a GM force a win/loss/stop.

How it plays

  • Spawning / waves: on START, mdstone (040049b68) spawns c_defense_level_<level> NPCs at the start point mdstart (04004c409). Monster HP scales with level and player count: maxhits = level * players * 8. Each level spawns 21 - level monsters before advancing (so higher levels have fewer but tougher monsters), with a 30-second breather between levels.
  • The path: each monster equips i_defense_move, which repeatedly runs it in a fixed direction (dir=4, south) along i_md_path tiles toward the end. Players are blocked from walking on the monster path and the start/end tiles (moveback).
  • Levels 1-20: each level is a different creature (c_defense_level_1 reaper … c_defense_level_20 snake; see table below). Level 20 is the Final Level with doubled HP. Higher-level monsters (15+) are immune to poison (@spelleffect argn 20).
  • Lose condition: if any monster steps on the end tile i_defense_end (mdend = 04004c1e2), everyone loses — "A MONSTER GOT TO THE END!!" — and end_event fires.
  • Win condition: surviving all 20 waves (the GM confirms with the WIN button, which awards the winning prize).
  • Gear: the arena has free dispenser items (dclick to receive, capped): mana potions, arrows, vanquishing bow / elven bow, full spellbook, vanq viking sword / kryss / mace, reagent bags (tm_bag_of_magic), and lavabombs. Many spells are disabled (e_monsterdefense @spellcast), and players cannot be hurt (@gethit returns 1); death just refreshes the player.
  • Exit / rewards (md_goback → md_goback_go, after a random 1-30s delay): removes e_monsterdefense, sends the player to jail4 with 100 gold and a duped prize — mdlose (040046f18) for participation or mdwin (040046f6f) for a win.

Monster levels

Levels 1-10 Levels 11-20
1 Reaper, 2 Red Dragon, 3 Daemon, 4 Titan, 5 Ettin, 6 Ogre, 7 Troll, 8 Ophidian Queen, 9 Terathan Matriarch, 10 Gargoyle 11 Harpy, 12 Giant Scorpion, 13 Giant Toad, 14 Blade Spirit, 15 Liche, 16 Gazer, 17 Mongbat, 18 Pig, 19 Slime, 20 Snake (Final, 2× HP)

Key definitions

Type Name Purpose
DEFNAME monster_defense Maps the key UIDs: mdstone 040049b68, mdstart 04004c409, mdend 04004c1e2, mdwin 040046f6f, mdlose 040046f18.
ITEMDEF i_md_stone GM control stone → md_stone menu; also the spawn timer engine.
MENU md_stone START / STOP / WIN / LOST / RESET controls.
ITEMDEF i_md_player_start Join tile (teleports to 5127,511,7, adds e_monsterdefense).
ITEMDEF i_md_path, i_defense_start, i_defense_end, i_defense_move Path/boundary tiles and the monster auto-walk equip.
EVENTS e_monsterdefense Player-side rules: spell restrictions, invulnerability, lavabomb handling.
EVENTS e_defense_level Monster death FX and cleanup.
CHARDEF c_defense_level_1 … c_defense_level_20 The 20 wave creatures.
FUNCTION end_event, md_goback, md_goback_go Teardown and player return/reward.
ITEMDEF i_defense_mana/arrow/bow/elven/spellbook/sword/kryss/mace/regs/explo Free gear dispensers.
Region around 5127,511,7 Monster Defense arena.