Map Limits

There are several limits that a mapper may encounter when creating maps (particularly UMS maps) for StarCraft. Most of these limits are numeric, such as the maximum amount of units that may exist during gameplay, or the number of locations a map may contain.

List of map limits

• Location limit: 254 (+ Anywhere = 255)
• String limit: 1024 in StarEdit/XtraEdit

  Variable in other editors, see Strings.

• Trigger limit: 65534 per player

  This is the number of triggers that a player in a map can have until StarCraft crashes while saving the game.

• Minimum working map size: 1x6
• Maximum working map size: 256x256
• StarEdit Unit limit: 1650
• CHK load Unit limit: 1700

  This does not include Start Locations.

• StarCraft Unit limit: 1700

  This does not include Start Locations.

  This limit is also known as map max.

• StarEdit Sprite limit: 250
• CHK load Sprite limit: 499

  This is the number of Pure Sprites StarCraft will load which obviously includes the sprites that are on some doodads like the tree doodads. If ever you over-pass this limit, StarCraft will ignore the last sprites created.

• StarCraft Sprite limit: 2500
• StarCraft Image limit: 5000
• StarCraft Weapon limit: 100

  Cutoff of 80 for Terran Valkyries.

List of general limits

Unit HP range (1+3 Bytes)

-8 388 608 to 8 388 607.5

Protoss Shield range (2 Bytes)

0 to 65 535

Mineral/Gas cost range (2 Bytes)

0 to 65 535

Build time range (2 Bytes)

0 to 65 535

Armor range (1 Byte)

0 to 255 (+255 with upgrades)

Upgrades range (1 Byte)

0 to 255

Resource range for Mineral Fields and Vespene Geysers (2 Bytes)

0 to 65 535

Damage range (2 Bytes)

0 to 65 535 (+ 65 535 bonus * 255 upgrades)

Number Value (Wait, Set Deaths, Set Mineral Amount, Scores, etc.) range (4 Bytes)

-2 147 483 648 to 2 147 483 647 signed

0 to 4 294 967 295 unsigned