DF2014:Object testing arena
|This article is about the current version of DF.|
The object testing arena is a special game mode accessible through the main menu where the player can alternate between spawning creatures and manipulating objects and features such as the weather and temperature to taking direct control of characters in an adventurer mode-like interface for the purpose of testing whatever it is they want. It is a fun place; you can test things, or just have some fun carnage by spawning 50 steel-clad dwarves and setting them on some unarmed elves for that combat log goodness. As of v0.42.06, it is possible to save games in arena mode.
Note that the object testing arena is not the same as an arena created in fortress mode.
 Spawning creatures
 Inventory and skills
While in the creature placement menu, it is possible to add skills to your creatures such as the fighter skill. It is also possible to add weapons, ammo, and armor to your creatures. Creatures unable to use the weapons given to them will drop them upon unpausing, but creatures such as dwarves will happily use the weapon as long as they at least have dabbling in the weapon skill. You can also set exactly how much of a certain item you want when you select it, by using theor keys, which is the only way to get a creature to hold more than one piece of ammo, as the arena lacks an option for spawning quivers or backpacks.
A creature can be created with an effect from an interaction by pressing in the Creation menu. In vanilla games, the available effects are the interactions of necromancers, animated corpses, disturbed dead, accursed, werebeasts and vampires. Any modded interaction with a defined arena name will also be available.
It is possible to 'Team' creatures up by pressingand in the Creation menu which is shown on the top left hand side. There are 99 teams, as well as "Independent", which is the default and acts as every creature for himself.
In this way you can create simulated battles against beasts or enemies. For example, you can test twenty sword-users versus twenty macemen and analyze the battle from the gamelog.txt.
Corpses can be butchered by moving over them and pressing. This can be an easy way to obtain butchering information, although there tends to be a distinct lack of variation in the results (unless the corpse is missing a body part). This is partly due to the fact that no child creatures can be created.
 Nature of conflict
The level of conflict between creatures or alliances can be controlled in the main screen with the keys and . The available settings are, from most lethal to least:
- No quarter
Morale may also be switched on or off with on the main screen.
 Fighting in the Arena yourself
Looat any creature, and press to play as them, and to exit back to the main mode.
- The controls here are exactly the same as in Adventurer mode.
- Attempting to a corpse results in the corpse being butchered.
 Spawning liquids
From the loocave-in. You can place fluids in a tile that also has a wall in it; the result is a tile with both a wall and 7/7 units of the fluid you placed (water or lava). This combination behaves exactly the same normal water without the wall would, except the area is still considered inaccessible for water to move through.menu, press to spawn a 7/7 unit of lava, or to spawn 7/7 water on the currently selected tile. If you place water and then lava in the same tile, they will immediately form a 'Rough-hewn Rock Wall' (i.e. before you unpause), resulting in no spillage. However, placing lava and then water fills the tile with lava-hot water, which then instantly turns to steam upon unpausing. It is also possible to spawn rock walls in mid-air, usually causing a
 Spawning trees
Also can be spawned from lootrees. Press to create a tree. You can choose a tree from a list of species, as well as its ge. Again, pressing will spawn the tree itself. Trees can be placed anywhere, even a rock block floor or mid-air (the latter will also cause a cave-in, replacing rock block floors with sand). Arena-created trees do not spawn with roots. At present it's not possible to chop down a tree, though they can be burned by spawning lava, killing the tree.ing are multi-tile
 Controlling the Environment
The arena's environment can be modified in-game by pressing. From this screen, you can adjust Weather, Temperature, and Time. From this menu, you can also press to cover every map tile in snow, to make everything muddy, and to remove all mud and snow.
This section has 4 options, each of which can be set to various settings:
- No cumulus clouds
- Scattered cumulus
- Many cumulus (rain)
- Cumulonimbus (rain)
- Cirrus (toggle)
- No stratus
- Stratus (rain)
- Nimbostratus (rain)
- No fog
- Thin mist
- Thick fog
As expected, the options marked with "(rain)" will cause it to start raining.
The arena's temperature can be set to one of 13 settings:
- Dragonfire -
- Magma -
- Fire -
- Scorching -
- Hot -
- Warm -
- Cool -
- Cold -
- Subterranean -
- Freezing -
- Below freezing -
- Deathly cold -
- Absolute zero -
The arena's time can be set to one of 13 settings:
- Dawn (5:30am)
- Morning (8:00am)
- Late morning (10:30am)
- Noon (1:00pm)
- Early afternoon (2:00pm)
- Late afternoon (3:30pm)
- Early evening (5:00pm)
- Evening (6:30pm)
- Dusk (8:30pm)
- Night (10:00pm)
- Midnight (12:00am)
- Late night (2:00am)
- Early morning (4:00am)
 Modifying the Arena layout
The layout of the arena zone is stored in the (DF)/data/init folder. Modifications to this file will not change the dimensions of the arena; they can only change the initial tiles and fluids present.
The arena is composed of 9 z-levels (including Z=0, from Z=-4 to Z=4) of 144 x 144 tiles; the contents of each tile are specified by a single character:
|Empty tile |
|Water source  |
|7/7 water |
|7/7 water + upward ramp|
|7/7 magma/lava |
|7/7 magma/lava + upward ramp|
- Tile will have no floor unless a pillar/wall is constructed on the z-level below.
- Only seems to work when placed on map edge; behaves identically to capital
- Only one type will be present, but it will be randomly selected each time you enter the Arena.