Freeciv
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{{MPmanualNav}}
 
{{MPmanualNav}}
   
==='''World'''===
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==== ''Quick Jumps''':''''' ====
  +
<blockquote><u>[[Terrain.mp#Terrain Chart|''Terrain Chart'']]</u></blockquote><blockquote><u>[[Terrain.mp#Terrain Modification Flowchart|''Terrain Modification Flowchart'']]</u></blockquote>
The Freeciv world is made of tiles (squares) arranged in a rectangular grid. The eastern and western edges connect, forming a cylinder that can be circumnavigated.
 
  +
<br> <br>
 
 
==== '''World ''' ====
Each tile will be some type of terrain. Together, tiles will form larger features like seas, continents, rivers, and mountain ranges.
 
 
The Freeciv world map is made of tiles (squares). Each is some type of terrain. The eastern and western edges connect, forming a cylinder that can be circumnavigated.
 
==='''Terrain'''===
 
==='''Terrain'''===
Terrain serves 3 roles: ('''1''') '''Unit combat''', ('''2''') '''Unit movement''', ('''3''') '''Resources for cities'''. We shall consider each role in turn.
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Terrain affects 3 facets: ('''1''') '''Unit combat''', ('''2''') '''Unit movement''', ('''3''') '''Resources for cities'''. We shall consider each facet in turn.
  +
 
===='''Unit''' '''Combat'''====
 
===='''Unit''' '''Combat'''====
Terrain affects combat very simply: when a land unit is attacked, its defense strength is multiplied by the defense bonus of the terrain beneath it. See the page on [[combat]] for details, and the catalogue below for which terrains offer bonuses. (Rivers offer an additional defense bonus of 50%, i.e. the terrain-specific bonus is multiplied by 1.5.) [[Image:tx.road.png|frame|right|Road|link=https://freeciv.wikia.com/wiki/File:Tx.road.png]][[Image:tx.rail.png|frame|right|Railroad|link=https://freeciv.wikia.com/wiki/File:Tx.rail.png]]
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Terrain affects combat. When a land unit is attacked, its defense strength is multiplied by the bonus of the terrain. See the page on [[combat.mp|combat]] for details, and the [[terrain.mp#Terrain Chart|Terrain chart]] below for which terrains offer bonuses. (Rivers give an extra bonus of +50%.) [[Image:tx.road.png|frame|right|Road|link=https://freeciv.wikia.com/wiki/File:Tx.road.png]]
 
===='''Unit''' '''Movement'''====
 
===='''Unit''' '''Movement'''====
''Sea and air units'' always expend one movement point to move one tile &#8212; sea units because they are confined to the ocean and adjacent cities, and air units ignore terrain completely. Terrain really only complicates the movement of land units.
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''Sea and air units'' always expend one movement point to move one tile. Terrain only influences the movement speed of land units.
   
 
''Land units'' - movement "speed":
 
''Land units'' - movement "speed":
* Moving across easy terrain costs one point per tile; moving onto rough terrain costs more. The cost for each difficult terrain is given in the catalogue below.
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* Moving across easy terrain costs one point per tile; moving onto rough terrain costs more. The cost for each difficult terrain is given in the [[terrain.mp#Terrain Chart|Terrain chart]] below.
* The explorer, partisan, and alpine troops travel light enough that moving one tile costs only ⅓ of a movement point (except that they can use railroads like anyone else).
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* The explorer, partisans, and alpine troops travel light enough that moving one tile costs only ⅓ of a movement point. (They can use railroads like anyone else.)
* Other land units move for only ⅓ of a movement point per tile along:
+
* Other land units spend ⅓ of a movement point per tile along rivers and roads, as long as the tile they are leaving also has a river or road.
 
* With [[technology.mp#railroad|Railroad]] technology, roads can be upgraded to ''railroads. ''Units can move as far as they want along a railroad in a single turn! Beware that roads and railroads can help an enemy army as much as your own.
** [[Terrain#Rivers|rivers]], which are natural features that cannot be altered (except by transforming land to sea and back again), and
 
  +
''Cities'' always have roads inside &#8212; and bridges and railroads if the nation has those respective technologies.
** ''roads'', which can be built by workers, settlers, and engineers.
 
* With the railroad advance, roads can be upgraded to ''railroads'' which cost nothing to move along &#8212; units can move as far as they want along a railroad in a single turn! Beware that roads and railroads can be used by any civilization, so an extensive railroad system may offer your enemies instant movement across your empire. Railroads cost three settler-turns regardless of terrain.
 
''Cities'' always have roads inside &#8212; and railroads, when their owner has that technology &#8212; which will connect to (rail)roads built adjacent to the city.
 
   
With the [[Technology#Bridge building|bridge building]] advance, roads and railroads can be built on river tiles to bridge them.
+
With the [[Technology.mp#Bridge building|Bridge building]] advance, roads and railroads can be built on river tiles to bridge them.
 
===='''Resources for Cities'''====
 
===='''Resources for Cities'''====
 
Tiles within range of a [[Cities|city]] may be worked by that city. Cities may be built on any terrain except Ocean or Glacier.
 
Tiles within range of a [[Cities|city]] may be worked by that city. Cities may be built on any terrain except Ocean or Glacier.
   
When a city [[Cities#Working land|works terrain]] on a tile, it receives three products: '''food points, production points, and trade points'''. We specify the output of a tile simply by listing these with slashes in between. For example, "1/2/0" describes a tile that produces one food point, two production points, and no trade points.
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When a city [[Cities.mp#Working land|works]] a tile, it receives three products: '''food, production, and trade'''. Output of a tile is conventionally written as food/production/trade. For example, "1/2/3" is a tile that produces 1 food, two production, and 3 trade.
   
Every type of terrain has some chance of an additional ''special resource'' that boosts one or two of the products. Terrain transformation can make resources inaccessible; for instance, if a Forest tile with pheasant is transformed to Plains, there will no longer be a food bonus from the pheasant for that tile.
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Terrain sometimes has a ''special resource'' which boosts food, production, or trade. Terrain transformation can make resources inaccessible; for instance, if a Forest with a pheasant is transformed to Plains, it will lose its food bonus.
   
The catalogue below lists the output of each terrain, both with and without special resources.[[Image:tx.irrigation.png|frame|right|Irrigation|link=https://freeciv.wikia.com/wiki/File:Tx.irrigation.png]][[Image:tx.farmland.png|frame|right|Farmland|link=https://freeciv.wikia.com/wiki/File:Tx.farmland.png]][[Image:tx.mine.png|frame|right|Mine|link=https://freeciv.wikia.com/wiki/File:Tx.mine.png]][[Image:tx.fortress.png|frame|right|Fortress|link=https://freeciv.wikia.com/wiki/File:Tx.fortress.png]][[Image:tx.airbase.png|frame|right|Airbase|link=https://freeciv.wikia.com/wiki/File:Tx.airbase.png]]
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The terrain [[terrain.mp#Terrain Chart|Terrain chart]] below lists the output of each terrain, both with and without special resources.[[Image:tx.irrigation.png|frame|right|Irrigation|link=https://freeciv.wikia.com/wiki/File:Tx.irrigation.png]][[Image:tx.farmland.png|frame|right|Farmland|link=https://freeciv.wikia.com/wiki/File:Tx.farmland.png]][[Image:tx.mine.png|frame|right|Mine|link=https://freeciv.wikia.com/wiki/File:Tx.mine.png]][[Image:tx.fortress.png|frame|right|Fortress|link=https://freeciv.wikia.com/wiki/File:Tx.fortress.png]][[Image:tx.airbase.png|frame|right|Airbase|link=https://freeciv.wikia.com/wiki/File:Tx.airbase.png]]
 
==='''Improving Terrain'''===
 
==='''Improving Terrain'''===
  +
''Mining ''and ''irrigating'' are the two actions that workers, settlers, and engineers can do to improve terrain. ''Transforming'' is a third action that only engineers can perform.
===='''Basics'''====
 
There are several ways to improve terrain.
 
   
As soon as they are created, workers, settlers, and engineers can:
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As soon as they are created, workers, settlers, and engineers can "''irrigate"'' land to produce more food, cut a forest, or drain a swamp; or, "''mine"'' a tile to yield more production points, plant a forest, or create a swamp.
# ''irrigate'' land to produce more food or
 
# build a ''mine'' to yield more production points
 
(but not both on the same tile). Once built, a mine or irrigation system may be destroyed by pillaging or further alteration of the terrain.
 
   
 
Irrigation and mines can't co-exist on the same tile. Once built, a mine or irrigation system may will be destroyed if replaced with the other improvement.
To irrigate land, the player must have a water source in one of the four adjoining tiles, whether river or ocean or other irrigated land.
 
   
 
To irrigate land, the player must have a water source in one of the four adjoining tiles. Water sources are oceans, lakes, rivers, or any other irrigated land except a city tile.
Terrain can often be '''transformed''' to become more suitable to the player's needs &#8212; attempting to irrigate a forest, for example, creates plains (which can then be irrigated in the normal way). (See "transformation" below.)
 
   
  +
Terrain can be transformed into a new type. Attempting to irrigate a forest, for example, creates plains. (See "[[Terrain.mp#Terrain Modification Flowchart|Terrain Modification Flowchart]]" below.)
''Roads'' and ''railroads'' are improvements that have been mentioned under "Transportation". They can be built on the same tile as other improvements (such as irrigation). Note that roads and rivers enhance trade for some types of terrain, as shown in the catalogue below, and railroads increase by the production output of a tile by 50% (while also retaining any trade bonus from roads).
 
  +
 
''Roads'' and ''railroads'' can be built on the same tile as other improvements (such as irrigation). Note that roads and rivers enhance trade for some types of terrain, and railroads increase the production output of a tile by 50%.
   
[[File:Terrain-change-map-1.png|centre|thumb|670x670px|'''Altering Terrain Types: Methods and Number of Turns''']]
 
 
===='''Later improvements'''====
 
===='''Later improvements'''====
<tt id="fortress"><!-- creates an anchor for the [[Fortress]] disambiguation page --></tt>''Fortresses'' (2 worker-turns; requiring [[Technology#Construction|Construction]]) and ''airbases'' (requiring [[Technology#Radio|Radio]]) are also terrain improvements.
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<tt id="fortress"><!-- creates an anchor for the [[Fortress]] disambiguation page --></tt>''Fortresses'' (requiring [[Technology.mp#Construction|Construction]]) and ''Airbases'' (requiring [[Technology.mp#Radio|Radio]]) are also terrain improvements.
*In a fortress, units are killed one by one (ignoring the [[Editing Rulesets#The anatomy of a game ruleset file|game.ruleset]] option "killstack"), and defence is doubled. Fortresses also extend national borders, and once [[Technology#Invention|Invention]] has been researched, units in a fortress have increased vision.
+
*In a Fortress, enemies can only kill units one at a time instead of all at once, and defence is doubled. Fortresses also claim and extend national borders. Once [[Technology.mp#Invention|Invention]] is discovered, units in a fortress have increased vision.
   
*In an airbase, air units (including [[helicopter]]s) are also killed one by one and allowed to refuel, but also open to attacks by land units. [[Units#Paratroopers|Paratroopers]] can be launched from airbases.
+
*In an Airbase, air units (including [[helicopter]]s) are also killed one by one and allowed to refuel, but are open to attacks by land units. [[Units.mp#Paratroopers|Paratroopers]] can be launched from airbases.
 
After [[Technology.mp#Refrigeration|Refrigeration]] has been discovered, irrigated tiles can be irrigated again, resulting in '''''farmland'''''. This increases tile food production by 100% if the city working it has a [[Buildings.mp#Supermarket|supermarket]].
Both take two worker-turns to complete, regardless of terrain. Only workers and engineers can build airbases.
 
   
 
Only engineers can directly '''transform land'''. ''(See [[terrain.mp#terrain improvement chart|terrain improvement chart]] above.)'' For transforming swamp to ocean, one of the eight adjoining tiles must be ocean already. To transform ocean into swamp at least 3 of 8 adjoining tiles must be land. To work on Ocean, Engineers must be on a transport. The new swamp will get a river if built adjacent to some river tile's single mouth.
After [[Technology#Refrigeration| Refrigeration]] has been researched, irrigated tiles can be irrigated again, resulting in '''''farmland'''''. This increases tile food production by 100% if the city working it has a [[Buildings#Supermarket|supermarket]].
 
   
  +
'''Engineers work at double speed and perform two worker-turns per turn. Therefore they complete all improvements in half the number of turns specified in the [[terrain.mp#terrain improvement chart|terrain improvement chart]]'' ''and [[terrain.mp#Terrain Chart|Terrain chart]].'''
Only engineers can directly '''transform land'''. ''(See earlier diagramme above and the catalogue below).'' For transforming swamp to ocean, one of the eight adjoining tiles must be ocean already. To allow transforming ocean into swamp at least three of eight adjoining tiles must be land. Load engineers on a transport and move them over the desired ocean tile before giving them the command to transf('''O''')rm. The new swamp will get a river if built adjacent to some river tile's single mouth.
 
 
Note that each turn, Engineers get two worker-turns to invest in their activities. Therefore they complete all improvements in half the number of turns specified in the catalogue.
 
   
 
Two or more units working on the same tile under the same orders combine their labor, speeding completion of their project. Be careful: when a unit's working orders are interrupted, its progress is lost.
 
Two or more units working on the same tile under the same orders combine their labor, speeding completion of their project. Be careful: when a unit's working orders are interrupted, its progress is lost.
   
Any special resource on a tile is lost after its terrain type is transformed. It would reappear if the tile can be transformed back to its original terrain. The lone exception is that Oil on a glacier can be regained if the tile is transformed to desert.
+
Any special resource on a tile is lost after its terrain type is transformed. It would reappear if the tile can be transformed back to its original terrain.
 
[[Image:tx.village.png|frame|right|Village|link=https://freeciv.wikia.com/wiki/File:Tx.village.png]]
 
==='''Villages'''===
 
The user who hosts the game has the option of including up to 500 villages (also called huts), primitive communities spread across the world at the beginning of the game. Any land unit can enter a village, making the village disappear and deliver a random response. If the village proves hostile, it could produce barbarians or the unit entering may simply be destroyed. If they are friendly, the player could receive gold, a new technology, a military unit (occasionally a settler; and sometimes a unit that the player cannot yet create), or even a new city.
 
   
Later in the game, helicopters may also enter villages, but overflight by other aircraft will cause the villagers to take fright/flight and disband.[[Image:tx.river.png|frame|right|River|link=https://freeciv.wikia.com/wiki/File:Tx.river.png]]
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[[Image:tx.river.png|frame|right|River|link=https://freeciv.wikia.com/wiki/File:Tx.river.png]]
 
==='''Rivers'''===
 
==='''Rivers'''===
''Rivers'' increase movement the same as [[Terrain#Transportation|roads]] while giving a 150% defense bonus. Roads can't be placed over river tiles until the technology Bridge Building is discovered.
+
''Rivers'' increase movement the same as [[Terrain.mp#Transportation|roads]] while giving a +50% defense bonus. Roads can't be placed over river tiles until the technology Bridge Building is discovered. A tile with a river gives trade the same as a tile with a road. On grassland, plains and desert, a tile with a bridge will give an extra +1 trade more than a road. On other terrain, bridges give no trade bonus.
   
 
{{-}}
 
{{-}}
==='''Terrain Catalog'''===
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==='''Terrain Chart'''===
 
{| border="1" cellpadding="4" style="background:transparent"
 
{| border="1" cellpadding="4" style="background:transparent"
   
! bgcolor="#9bc3d1" |Terrain
+
! bgcolor="#cddbd3" |Terrain
! bgcolor="#9bc3d1" |<span title="Food/Production/Trade" class="">F/P/T</span>
+
! bgcolor="#cddbd3" |<span title="Food/Production/Trade" class="">F/P/T</span>
! bgcolor="#9bc3d1" |[[:Category:Resources|Special 1]]
+
! bgcolor="#cddbd3" |[[:Category:Resources|Special 1]]
! bgcolor="#9bc3d1" |<span title="Food/Production/Trade" class="">F/P/T</span>
+
! bgcolor="#cddbd3" |<span title="Food/Production/Trade" class="">F/P/T</span>
! bgcolor="#9bc3d1" |[[:Category:Resources|Special 2]]
+
! bgcolor="#cddbd3" |[[:Category:Resources|Special 2]]
! bgcolor="#9bc3d1" |<span title="Food/Production/Trade" class="">F/P/T</span>
+
! bgcolor="#cddbd3" |<span title="Food/Production/Trade" class="">F/P/T</span>
! bgcolor="#9bc3d1" |Move cost<br />*<br />Defense<br />bonus
+
! bgcolor="#cddbd3" |<sub>Move cost<br /><br />Defence</sub>
! bgcolor="#9bc3d1" |<sub>''Result (turns):''</sub>
+
! bgcolor="#cddbd3" |
  +
Result:
   
  +
<span style="color:DarkGreen;"><sub>Irrigation </sub>(turns)</span><sub><br /></sub><span style="color:DarkRed;">Mining<sub> </sub>(turns)</span>
Irrigation<br />Mining
 
  +
! bgcolor="#cddbd3" |
! bgcolor="#9bc3d1" |<sub>''Result&nbsp;(turns):''</sub><br />Road<br />Transforming
 
  +
Result:<br /><span style="color:#67402f;">Road (turns)</span><sub><br /><span style="color:#bf4403;">Transform (turns)</span></sub>
|- bgcolor="#e0f0f0" id="Glacier" align="left"
+
|- bgcolor="#e0f0f0" id="Glacier" align="center"
 
|- bgcolor="#e0f0f0" id="Floor"
 
|- bgcolor="#e0f0f0" id="Floor"
| align="left" |'''Deep&nbsp;ocean'''<br />[[File:Floor.png|link=https://freeciv.wikia.com/wiki/File:Floor.png]]
+
| align="center" |'''Deep&nbsp;ocean'''<br />[[File:Floor.png|link=https://freeciv.wikia.com/wiki/File:Floor.png]]
| align="left" |1/0/2
+
| align="center" |1/0/2
| align="left" |&nbsp;
+
| align="center" |&nbsp;
| align="left" |&nbsp;
+
| align="center" |&nbsp;
| align="left" |&nbsp;
+
| align="center" |&nbsp;
| align="left" |&nbsp;
+
| align="center" |&nbsp;
| align="center" |1
+
| align="center" |1M
  +
<nowiki>*</nowiki><br />100%
 
  +
'''1×'''
| align="left" |impossible<br />impossible
 
| align="left" |impossible<br />impossible
+
| align="center" |<span style="color:Gray;">✘''<br />''✘</span>
  +
| align="center" |<span style="color:Gray;">✘''<br />''✘</span>
 
|- bgcolor="#e0f0f0" id="Desert"
 
|- bgcolor="#e0f0f0" id="Desert"
| align="left" |'''Desert'''<br />[[File:Desert.png|link=https://freeciv.wikia.com/wiki/File:Desert.png]]
+
| align="center" |'''Desert'''<br />[[File:Desert.png|link=https://freeciv.wikia.com/wiki/File:Desert.png]]
| align="left" |0/1/0
+
| align="center" |0/1/0
| align="left" |Oasis<br />[[File:Ts.oasis.png|link=https://freeciv.wikia.com/wiki/File:Ts.oasis.png]]
+
| align="center" |Oasis<br />[[File:Ts.oasis.png|link=https://freeciv.wikia.com/wiki/File:Ts.oasis.png]]
| align="left" |3/1/0
+
| align="center" |3/1/0
| align="left" |Oil<br />[[File:Ts.oil.png|link=https://freeciv.wikia.com/wiki/File:Ts.oil.png]]
+
| align="center" |Oil<br />[[File:Ts.oil.png|link=https://freeciv.wikia.com/wiki/File:Ts.oil.png]]
| align="left" |0/4/0
+
| align="center" |0/4/0
| align="center" |1
+
| align="center" |1M<br />'''1×'''
  +
| align="center" | <span style="color:DarkGreen;">+1F ('''3''')<br /></span><span style="color:DarkRed;">+1P ('''3''')</span>
<nowiki>*</nowiki><br />100%
 
| align="left" | +1 F (3)<br />+1 P (3)
+
| align="center" |<span style="color:#67402f;"> +1T ('''1''')</span><span style="color:#bf4403;"><br />Plains ('''12''')</span>
| align="left" | +1 T (1)<br />Plains (12)
 
 
|- bgcolor="#e0f0f0" id="Forest"
 
|- bgcolor="#e0f0f0" id="Forest"
| align="left" |'''Forest'''<br />[[File:Forest.png|link=https://freeciv.wikia.com/wiki/File:Forest.png]]
+
| align="center" |'''Forest'''<br />[[File:Forest.png|link=https://freeciv.wikia.com/wiki/File:Forest.png]]
| align="left" |1/2/0
+
| align="center" |1/2/0
| align="left" |Pheasant<br />[[File:Ts.pheasant.png|link=https://freeciv.wikia.com/wiki/File:Ts.pheasant.png]]
+
| align="center" |Pheasant<br />[[File:Ts.pheasant.png|link=https://freeciv.wikia.com/wiki/File:Ts.pheasant.png]]
| align="left" |3/2/0
+
| align="center" |3/2/0
| align="left" |Silk<br />[[File:Ts.silk.png|link=https://freeciv.wikia.com/wiki/File:Ts.silk.png]]
+
| align="center" |Silk<br />[[File:Ts.silk.png|link=https://freeciv.wikia.com/wiki/File:Ts.silk.png]]
| align="left" |1/2/3
+
| align="center" |1/2/3
| align="center" |2
+
| align="center" |2M
  +
<nowiki>*</nowiki><br />150%
 
  +
'''1.5×'''
| align="left" |Plains (3)<br />Swamp (8)
 
  +
| align="center" |<span style="color:DarkGreen;">Plains ('''3''')</span><span style="color:DarkRed;"><br />Swamp ('''8''')</span>
| align="left" |+0 T (2)<br />Grassland (12)
 
  +
| align="center" |<span style="color:#67402f;">+0T ('''2''')</span><br /><span style="color:#bf4403;">Grassland ('''12''')</span>
 
|- bgcolor="#e0f0f0" id="Grassland"
 
|- bgcolor="#e0f0f0" id="Grassland"
| align="left" |'''Grassland'''<br />[[File:Grassland.png|link=https://freeciv.wikia.com/wiki/File:Grassland.png]]
+
| align="center" |'''Grassland'''<br />[[File:Grassland.png|link=https://freeciv.wikia.com/wiki/File:Grassland.png]]
| align="left" |2/0/0
+
| align="center" |2/0/0
| align="left" |Resources<br />[[File:Ts.grassland_resources.png|link=https://freeciv.wikia.com/wiki/File:Ts.grassland_resources.png]]
+
| align="center" |Shield<br />[[File:Ts.grassland_resources.png|link=https://freeciv.wikia.com/wiki/File:Ts.grassland_resources.png]]
| align="left" |2/1/0
+
| align="center" |2/1/0
| align="left" |&nbsp;
+
| align="center" |&nbsp;
| align="left" |&nbsp;
+
| align="center" |&nbsp;
| align="center" |1
+
| align="center" |1M<br />'''1×'''
  +
| align="center" |<span style="color:DarkGreen;"> +1F ('''3''')</span><br /><span style="color:DarkRed;">Forest ('''5''')</span>
<nowiki>*</nowiki><br />100%
 
| align="left" | +1 F (3)<br />Forest (5)
+
| align="center" |<span style="color:#67402f;"> +1T ('''1''')</span><br /><span style="color:#bf4403;">Hills ('''12''')</span>
| align="left" | +1 T (1)<br />Hills (12)
 
 
|- bgcolor="#e0f0f0" id="Hills"
 
|- bgcolor="#e0f0f0" id="Hills"
| align="left" |'''Hills'''<br />[[File:Hills.png|link=https://freeciv.wikia.com/wiki/File:Hills.png]]
+
| align="center" |'''Hills'''<br />[[File:Hills.png|link=https://freeciv.wikia.com/wiki/File:Hills.png]]
| align="left" |1/0/0
+
| align="center" |1/0/0
| align="left" |Coal<br />[[File:Ts.coal.png|link=https://freeciv.wikia.com/wiki/File:Ts.coal.png]]
+
| align="center" |Coal<br />[[File:Ts.coal.png|link=https://freeciv.wikia.com/wiki/File:Ts.coal.png]]
| align="left" |1/2/0
+
| align="center" |1/2/0
| align="left" |Wine<br />[[File:Ts.wine.png|link=https://freeciv.wikia.com/wiki/File:Ts.wine.png]]
+
| align="center" |Wine<br />[[File:Ts.wine.png|link=https://freeciv.wikia.com/wiki/File:Ts.wine.png]]
| align="left" |1/0/4
+
| align="center" |1/0/4
| align="center" |2
+
| align="center" |2M<br />'''2×'''
  +
| align="center" |<span style="color:DarkGreen;"> +1F ('''5''')</span><br /><span style="color:DarkRed;">+3P ('''5''')</span>
<nowiki>*</nowiki><br />200%
 
| align="left" | +1 F (5)<br />+3 P (5)
+
| align="center" |<span style="color:#67402f;"> +0T ('''2''')</span><br /><span style="color:#bf4403;">Plains ('''12''')</span>
| align="left" | +0 T (2)<br />Plains (12)
 
 
|- bgcolor="#e0f0f0" id="Jungle"
 
|- bgcolor="#e0f0f0" id="Jungle"
| align="left" |'''Jungle'''<br />[[File:Jungle.png|link=https://freeciv.wikia.com/wiki/File:Jungle.png]]
+
| align="center" |'''Jungle'''<br />[[File:Jungle.png|link=https://freeciv.wikia.com/wiki/File:Jungle.png]]
| align="left" |1/0/0
+
| align="center" |1/0/0
| align="left" |Gems<br />[[File:Ts.gems.png|link=https://freeciv.wikia.com/wiki/File:Ts.gems.png]]
+
| align="center" |Gems<br />[[File:Ts.gems.png|link=https://freeciv.wikia.com/wiki/File:Ts.gems.png]]
| align="left" |1/0/4
+
| align="center" |1/0/4
| align="left" |Fruit<br />[[File:Ts.fruit.png|link=https://freeciv.wikia.com/wiki/File:Ts.fruit.png]]
+
| align="center" |Fruit<br />[[File:Ts.fruit.png|link=https://freeciv.wikia.com/wiki/File:Ts.fruit.png]]
| align="left" |4/0/1
+
| align="center" |4/0/1
| align="center" |2
+
| align="center" |2M<br />'''1.5×'''
  +
| align="center" |<span style="color:DarkGreen;">Grassland ('''8''')</span><br /><span style="color:DarkRed;">Forest ('''8''')</span>
<nowiki>*</nowiki><br />150%
 
  +
| align="center" |<span style="color:#67402f;">+0T ('''2''')</span><br /><span style="color:#bf4403;">Plains ('''12''')</span>
| align="left" |Grassland (8)<br />Forest (8)
 
| align="left" |+0 T (2)<br />Plains (12)
 
 
|- bgcolor="#e0f0f0" id="Lake"
 
|- bgcolor="#e0f0f0" id="Lake"
| align="left" |'''Lake'''<br />[[File:Lake.png|link=https://freeciv.wikia.com/wiki/File:Lake.png]]
+
| align="center" |'''Lake'''<br />[[File:Lake.png|link=https://freeciv.wikia.com/wiki/File:Lake.png]]
| align="left" |1/0/2
+
| align="center" |1/0/2
| align="left" |Fish<br />[[File:Ts.fish.png|link=https://freeciv.wikia.com/wiki/File:Ts.fish.png]]
+
| align="center" |Fish<br />[[File:Ts.fish.png|link=https://freeciv.wikia.com/wiki/File:Ts.fish.png]]
| align="left" |3/0/2
+
| align="center" |3/0/2
| align="left" |&nbsp;
+
| align="center" |&nbsp;
| align="left" |&nbsp;
+
| align="center" |&nbsp;
| align="center" |1
+
| align="center" |1M<br />'''1×'''
  +
| align="center" |<span style="color:Gray;">✘</span><span style="color:Gray;">''<br />''</span> <span style="color:Gray;">✘</span>
<nowiki>*</nowiki><br />100%
 
  +
| align="center" |<span style="color:Gray;">✘</span><br /><span style="color:#bf4403;">Swamp ('''18''') </span>
| align="left" |impossible<br />impossible
 
| align="left" |impossible<br />Swamp (18)
 
 
|- bgcolor="#e0f0f0" id="Mountains"
 
|- bgcolor="#e0f0f0" id="Mountains"
| align="left" |'''Mountains'''<br />[[File:Mountains.png|link=https://freeciv.wikia.com/wiki/File:Mountains.png]]
+
| align="center" |'''Mountains'''<br />[[File:Mountains.png|link=https://freeciv.wikia.com/wiki/File:Mountains.png]]
| align="left" |0/1/0
+
| align="center" |0/1/0
| align="left" |Gold<br />[[File:Ts.gold.png|link=https://freeciv.wikia.com/wiki/File:Ts.gold.png]]
+
| align="center" |Gold<br />[[File:Ts.gold.png|link=https://freeciv.wikia.com/wiki/File:Ts.gold.png]]
| align="left" |0/1/6
+
| align="center" |0/1/6
| align="left" |Iron<br />[[File:Ts.iron.png|link=https://freeciv.wikia.com/wiki/File:Ts.iron.png]]
+
| align="center" |Iron<br />[[File:Ts.iron.png|link=https://freeciv.wikia.com/wiki/File:Ts.iron.png]]
| align="left" |0/4/0
+
| align="center" |0/4/0
| align="center" |3
+
| align="center" |3M<br />'''3×'''
  +
| align="center" |<span style="color:Gray;">✘</span><br /><span style="color:DarkRed;">+1P ('''5''')</span>
<nowiki>*</nowiki><br />300%
 
  +
| align="center" |<span style="color:#67402f;">+0T ('''3''')<br /></span><span style="color:#bf4403;">Hills ('''12''')</span>
| align="left" |impossible<br />+1 P (5)
 
| align="left" |+0 T (3)<br />Hills (12)
 
 
|- bgcolor="#e0f0f0" id="Ocean"
 
|- bgcolor="#e0f0f0" id="Ocean"
| align="left" |'''Ocean'''<br />[[File:Ocean.png|link=https://freeciv.wikia.com/wiki/File:Ocean.png]]
+
| align="center" |'''Ocean'''<br />[[File:Ocean.png|link=https://freeciv.wikia.com/wiki/File:Ocean.png]]
| align="left" |1/0/2
+
| align="center" |1/0/2
| align="left" |Fish<br />[[File:Ts.fish.png|link=https://freeciv.wikia.com/wiki/File:Ts.fish.png]]
+
| align="center" |Fish<br />[[File:Ts.fish.png|link=https://freeciv.wikia.com/wiki/File:Ts.fish.png]]
| align="left" |3/0/2
+
| align="center" |3/0/2
| align="left" |Whales<br />[[File:Ts.whales.png|link=https://freeciv.wikia.com/wiki/File:Ts.whales.png]]
+
| align="center" |Whales<br />[[File:Ts.whales.png|link=https://freeciv.wikia.com/wiki/File:Ts.whales.png]]
| align="left" |2/1/2
+
| align="center" |2/1/2
| align="center" |1
+
| align="center" |1M<br />'''1×'''
  +
| align="center" |<span style="color:Gray;">✘</span><span style="color:Gray;">''<br />''</span> <span style="color:Gray;">✘</span>
<nowiki>*</nowiki><br />100%
 
  +
| align="center" |<span style="color:Gray;">✘</span><span style="color:Gray;"><br /></span><span style="color:#bf4403;">Swamp ('''18''')</span>
| align="left" |impossible<br />impossible
 
| align="left" |impossible<br />Swamp (18)
 
 
|- bgcolor="#e0f0f0" id="Plains"
 
|- bgcolor="#e0f0f0" id="Plains"
| align="left" |'''Plains'''<br />[[File:Plains.png|link=https://freeciv.wikia.com/wiki/File:Plains.png]]
+
| align="center" |'''Plains'''<br />[[File:Plains.png|link=https://freeciv.wikia.com/wiki/File:Plains.png]]
| align="left" |1/1/0
+
| align="center" |1/1/0
| align="left" |Buffalo<br />[[File:Ts.buffalo.png|link=https://freeciv.wikia.com/wiki/File:Ts.buffalo.png]]
+
| align="center" |Buffalo<br />[[File:Ts.buffalo.png|link=https://freeciv.wikia.com/wiki/File:Ts.buffalo.png]]
| align="left" |1/3/0
+
| align="center" |1/3/0
| align="left" |Wheat<br />[[File:Ts.wheat.png|link=https://freeciv.wikia.com/wiki/File:Ts.wheat.png]]
+
| align="center" |Wheat<br />[[File:Ts.wheat.png|link=https://freeciv.wikia.com/wiki/File:Ts.wheat.png]]
| align="left" |3/1/0
+
| align="center" |3/1/0
| align="center" |1
+
| align="center" |1M<br />'''1×'''
  +
| align="center" |<span style="color:DarkGreen;"> +1F ('''3''')</span><br /><span style="color:DarkRed;">Forest ('''8''')</span>
<nowiki>*</nowiki><br />100%
 
  +
| align="center" |<span style="color:#67402f;"> +1T ('''1''')</span><br /><span style="color:#bf4403;">Grassland ('''12''')</span>
| align="left" | +1 F (3)<br />Forest (8)
 
| align="left" | +1 T (1)<br />Grassland(12)
 
 
|- bgcolor="#e0f0f0" id="Swamp"
 
|- bgcolor="#e0f0f0" id="Swamp"
| align="left" |'''Swamp'''<br />[[File:Swamp.png|link=https://freeciv.wikia.com/wiki/File:Swamp.png]]
+
| align="center" |'''Swamp'''<br />[[File:Swamp.png|link=https://freeciv.wikia.com/wiki/File:Swamp.png]]
| align="left" |1/0/0
+
| align="center" |1/0/0
| align="left" |Peat<br />[[File:Ts.peat.png|link=https://freeciv.wikia.com/wiki/File:Ts.peat.png]]
+
| align="center" |Peat<br />[[File:Ts.peat.png|link=https://freeciv.wikia.com/wiki/File:Ts.peat.png]]
| align="left" |1/4/0
+
| align="center" |1/4/0
| align="left" |Spice<br />[[File:Ts.spice.png|link=https://freeciv.wikia.com/wiki/File:Ts.spice.png]]
+
| align="center" |Spice<br />[[File:Ts.spice.png|link=https://freeciv.wikia.com/wiki/File:Ts.spice.png]]
| align="left" |3/0/4
+
| align="center" |3/0/4
| align="center" |2
+
| align="center" |2M<br />'''1.5×'''
  +
| align="center" |<span style="color:DarkGreen;">Grassland ('''8''')</span><br /><span style="color:DarkRed;">Forest ('''8''')</span>
<nowiki>*</nowiki><br />150%
 
| align="left" |Grassland (8)<br />Forest (8)
+
| align="center" |<span style="color:#67402f;">+0T (2)</span><br /><span style="color:#bf4403;">Ocean ('''18''')</span>
| align="left" |+0 T (2)<br />Ocean (18)
 
 
|- bgcolor="#e0f0f0" id="Tundra"
 
|- bgcolor="#e0f0f0" id="Tundra"
| align="left" |'''Tundra'''<br />[[File:Tundra.png|link=https://freeciv.wikia.com/wiki/File:Tundra.png]]
+
| align="center" |'''Tundra'''<br />[[File:Tundra.png|link=https://freeciv.wikia.com/wiki/File:Tundra.png]]
| align="left" |1/0/0
+
| align="center" |1/0/0
| align="left" |Game<br />[[File:Ts.tundra_game.png|link=https://freeciv.wikia.com/wiki/File:Ts.tundra_game.png]]
+
| align="center" |Game<br />[[File:Ts.tundra_game.png|link=https://freeciv.wikia.com/wiki/File:Ts.tundra_game.png]]
| align="left" |3/1/0
+
| align="center" |3/1/0
| align="left" |Furs<br />[[File:Ts.furs.png|link=https://freeciv.wikia.com/wiki/File:Ts.furs.png]]
+
| align="center" |Furs<br />[[File:Ts.furs.png|link=https://freeciv.wikia.com/wiki/File:Ts.furs.png]]
| align="left" |2/0/3
+
| align="center" |2/0/3
| align="center" |1
+
| align="center" |1M<br />'''1×'''
  +
| align="center" |<span style="color:DarkGreen;"> +1F ('''3''')</span><br /><span style="color:Gray;">✘</span>
<nowiki>*</nowiki><br />100%
 
  +
| align="center" |<span style="color:#67402f;">+0T ('''1''')</span><br /><span style="color:#bf4403;">Desert ('''24''')</span>
| align="left" | +1 F (3)<br />impossible
 
| align="left" | +0 T (1)<br />Desert (24)
 
 
|}
 
|}
  +
<br><br>
  +
=== '''Terrain Modification Flowchart''' ===
 
[[File:Terrain-change-map-1.png|centre|thumb|670x670px|'''Altering Terrain Types: Methods and Number of Turns''']]
  +
  +
 
----
 
----
 
{| width="100%"
 
{| width="100%"
| align="left" |<span class="" style="background-color:#99ccff; border-color:#99ccff; border-style:outset; text-decoration:none !important; padding-left:0.2em; padding-right:0.2em; border-width:0.3em;">'''Previous:''' [[Multiplayer Game Manual|Game Manual]]</span>
+
| align="center" |<span class="" style="background-color:#99ccff; border-color:#99ccff; border-style:outset; text-decoration:none !important; padding-center:0.2em; padding-right:0.2em; border-width:0.3em;">'''Previous:''' [[Multiplayer Game Manual|Game Manual]]</span>
 
| align="center" |'''Chapter'''
 
| align="center" |'''Chapter'''
| align="right" |<span class="" style="background-color:#bbffbb; border-color:#bbffbb; border-style:outset; text-decoration:none !important; padding-left:0.2em; padding-right:0.2em; border-width:0.3em;">'''Next:''' [[Cities]]</span>
+
| align="right" |<span class="" style="background-color:#bbffbb; border-color:#bbffbb; border-style:outset; text-decoration:none !important; padding-center:0.2em; padding-right:0.2em; border-width:0.3em;">'''Next:''' [[Cities.mp|Cities]]</span>
 
|}
 
|}
  +
[[Category:Manuals]]

Latest revision as of 21:35, 8 March 2019

Quick Jumps:[]

Terrain Chart

Terrain Modification Flowchart



World []

The Freeciv world map is made of tiles (squares). Each is some type of terrain. The eastern and western edges connect, forming a cylinder that can be circumnavigated.

Terrain[]

Terrain affects 3 facets: (1) Unit combat, (2) Unit movement, (3) Resources for cities. We shall consider each facet in turn.

Unit Combat[]

Terrain affects combat. When a land unit is attacked, its defense strength is multiplied by the bonus of the terrain. See the page on combat for details, and the Terrain chart below for which terrains offer bonuses. (Rivers give an extra bonus of +50%.)

Tx

Road

Unit Movement[]

Sea and air units always expend one movement point to move one tile. Terrain only influences the movement speed of land units.

Land units - movement "speed":

  • Moving across easy terrain costs one point per tile; moving onto rough terrain costs more. The cost for each difficult terrain is given in the Terrain chart below.
  • The explorer, partisans, and alpine troops travel light enough that moving one tile costs only ⅓ of a movement point. (They can use railroads like anyone else.)
  • Other land units spend ⅓ of a movement point per tile along rivers and roads, as long as the tile they are leaving also has a river or road.
  • With Railroad technology, roads can be upgraded to railroads. Units can move as far as they want along a railroad in a single turn! Beware that roads and railroads can help an enemy army as much as your own.

Cities always have roads inside — and bridges and railroads if the nation has those respective technologies.

With the Bridge building advance, roads and railroads can be built on river tiles to bridge them.

Resources for Cities[]

Tiles within range of a city may be worked by that city. Cities may be built on any terrain except Ocean or Glacier.

When a city works a tile, it receives three products: food, production, and trade. Output of a tile is conventionally written as food/production/trade. For example, "1/2/3" is a tile that produces 1 food, two production, and 3 trade.

Terrain sometimes has a special resource which boosts food, production, or trade. Terrain transformation can make resources inaccessible; for instance, if a Forest with a pheasant is transformed to Plains, it will lose its food bonus.

The terrain Terrain chart below lists the output of each terrain, both with and without special resources.

Tx

Irrigation

Tx

Farmland

Tx

Mine

Tx

Fortress

Tx

Airbase

Improving Terrain[]

Mining and irrigating are the two actions that workers, settlers, and engineers can do to improve terrain. Transforming is a third action that only engineers can perform.

As soon as they are created, workers, settlers, and engineers can "irrigate" land to produce more food, cut a forest, or drain a swamp; or, "mine" a tile to yield more production points, plant a forest, or create a swamp.

Irrigation and mines can't co-exist on the same tile. Once built, a mine or irrigation system may will be destroyed if replaced with the other improvement.

To irrigate land, the player must have a water source in one of the four adjoining tiles. Water sources are oceans, lakes, rivers, or any other irrigated land except a city tile.

Terrain can be transformed into a new type. Attempting to irrigate a forest, for example, creates plains. (See "Terrain Modification Flowchart" below.)

Roads and railroads can be built on the same tile as other improvements (such as irrigation). Note that roads and rivers enhance trade for some types of terrain, and railroads increase the production output of a tile by 50%.

Later improvements[]

Fortresses (requiring Construction) and Airbases (requiring Radio) are also terrain improvements.

  • In a Fortress, enemies can only kill units one at a time instead of all at once, and defence is doubled. Fortresses also claim and extend national borders. Once Invention is discovered, units in a fortress have increased vision.
  • In an Airbase, air units (including helicopters) are also killed one by one and allowed to refuel, but are open to attacks by land units. Paratroopers can be launched from airbases.

After Refrigeration has been discovered, irrigated tiles can be irrigated again, resulting in farmland. This increases tile food production by 100% if the city working it has a supermarket.

Only engineers can directly transform land. (See terrain improvement chart above.) For transforming swamp to ocean, one of the eight adjoining tiles must be ocean already. To transform ocean into swamp at least 3 of 8 adjoining tiles must be land. To work on Ocean, Engineers must be on a transport. The new swamp will get a river if built adjacent to some river tile's single mouth.

Engineers work at double speed and perform two worker-turns per turn. Therefore they complete all improvements in half the number of turns specified in the terrain improvement chart and Terrain chart.

Two or more units working on the same tile under the same orders combine their labor, speeding completion of their project. Be careful: when a unit's working orders are interrupted, its progress is lost.

Any special resource on a tile is lost after its terrain type is transformed. It would reappear if the tile can be transformed back to its original terrain.

Tx

River

Rivers[]

Rivers increase movement the same as roads while giving a +50% defense bonus. Roads can't be placed over river tiles until the technology Bridge Building is discovered. A tile with a river gives trade the same as a tile with a road. On grassland, plains and desert, a tile with a bridge will give an extra +1 trade more than a road. On other terrain, bridges give no trade bonus.


Terrain Chart[]

Terrain F/P/T Special 1 F/P/T Special 2 F/P/T Move cost

Defence

Result:

Irrigation (turns)
Mining (turns)

Result:
Road (turns)
Transform (turns)

Deep ocean
Floor
1/0/2         1M



Desert
Desert
0/1/0 Oasis
Ts.oasis
3/1/0 Oil
Ts.oil
0/4/0 1M
+1F (3)
+1P (3)
+1T (1)
Plains (12)
Forest
Forest
1/2/0 Pheasant
Ts.pheasant
3/2/0 Silk
Ts.silk
1/2/3 2M

1.5×

Plains (3)
Swamp (8)
+0T (2)
Grassland (12)
Grassland
Grassland
2/0/0 Shield
Ts.grassland resources
2/1/0     1M
+1F (3)
Forest (5)
+1T (1)
Hills (12)
Hills
Hills
1/0/0 Coal
Ts.coal
1/2/0 Wine
Ts.wine
1/0/4 2M
+1F (5)
+3P (5)
+0T (2)
Plains (12)
Jungle
Jungle
1/0/0 Gems
Ts.gems
1/0/4 Fruit
Ts.fruit
4/0/1 2M
1.5×
Grassland (8)
Forest (8)
+0T (2)
Plains (12)
Lake
Lake
1/0/2 Fish
Ts.fish
3/0/2     1M


Swamp (18)
Mountains
Mountains
0/1/0 Gold
Ts.gold
0/1/6 Iron
Ts.iron
0/4/0 3M

+1P (5)
+0T (3)
Hills (12)
Ocean
Ocean
1/0/2 Fish
Ts.fish
3/0/2 Whales
Ts.whales
2/1/2 1M


Swamp (18)
Plains
Plains
1/1/0 Buffalo
Ts.buffalo
1/3/0 Wheat
Ts.wheat
3/1/0 1M
+1F (3)
Forest (8)
+1T (1)
Grassland (12)
Swamp
Swamp
1/0/0 Peat
Ts.peat
1/4/0 Spice
Ts.spice
3/0/4 2M
1.5×
Grassland (8)
Forest (8)
+0T (2)
Ocean (18)
Tundra
Tundra
1/0/0 Game
Ts.tundra game
3/1/0 Furs
Ts.furs
2/0/3 1M
+1F (3)
+0T (1)
Desert (24)



Terrain Modification Flowchart[]

Terrain-change-map-1

Altering Terrain Types: Methods and Number of Turns



Previous: Game Manual Chapter Next: Cities