Bulbapedia

Poké Radar: Difference between revisions

Article Discussion

Poké Radar (view source)

Revision as of 00:13, 18 January 2014

1,749 bytes added ,  18 January 2014
Re-organized; overhauled somewhat
(fixed formula)
(Re-organized; overhauled somewhat)
Line 2: Line 2:
The '''Poké Radar''' (Japanese: '''ポケモントレーサー''' ''Pokémon Tracer'', '''ポケトレ''' ''Poké Trace'' for short) is a [[key item]] in [[Generation IV]] and [[Generation VI]] that is used to seek out [[wild Pokémon]] hiding in tall grass.
The '''Poké Radar''' (Japanese: '''ポケモントレーサー''' ''Pokémon Tracer'', '''ポケトレ''' ''Poké Trace'' for short) is a [[key item]] in [[Generation IV]] and [[Generation VI]] that is used to seek out [[wild Pokémon]] hiding in tall grass.


==In Diamond, Pearl, and Platinum==
==In the games==
In all games so far, the Poké Radar is obtained after receiving the [[National Pokédex]].
 
It can only be used in [[tall grass]], while on foot. When used, a tune will begin to play, and up to four patches of grass will shake briefly. Upon entering one of these patches of grass, a {{pkmn|battle}} with a wild Pokémon will begin immediately, even if the player is using a [[Repel]]. Depending on the game, different patches may shake in a different way, corresponding to rarer species of wild Pokémon. However, all games feature a very rare and distinct type of shaking grass that glows white twice; such a grass patch will always contain a Shiny Pokémon. [[Roaming Pokémon]] cannot be encountered while using the Poké Radar.{{fact}}<!-- True in all generations?-->
 
Like the [[Vs. Seeker]], the Radar's battery must be charged after use by walking around. It takes 50 steps to fully charge the Poké Radar.
 
If the wild Pokémon is [[fainting|knocked out]] or {{pkmn2|caught|captured}} in a [[Poké Ball]], a ''chain'' will begin; this is the principle mechanic of the Poké Radar and crucial to increasing the probability of encountering a Shiny Pokémon. When a chain is in progress, the Poké Radar will automatically activate again at the end of the battle, causing up to four more grass patches to shake. Depending on various circumstances, one of these patches may be more likely to contain the same species of [[Pokémon]] as the one just encountered; defeating or catching such a Pokémon will continue to increase the chain by 1. If a wild Pokémon of a different species is encountered, or if a battle ends without defeating or capturing the wild Pokémon, or if a wild Pokémon is encountered outside of the Poké Radar, then the chain will break and the Poké Radar will not activate again at the end of the battle. A chain can also automatically break if the player uses the Bicycle or Roller Skates, or if the player scrolls all shaking grass patches off-screen by moving too far away from them.
 
Activating the Poké Radar manually in the middle of a chain will not break the chain, and will simply generate up to four new patches of shaking grass, replacing the old ones. This action is known as "resetting" the Radar. It is commonly used when none of the four patches is deemed likely to continue the chain; this determination varies between games.
 
As the chain length increases, the probability of finding a Shiny patch also increases, up to a certain maximum. After reaching this maximum, the player no longer needs to attempt to increase the chain, and can simply recharge and reset the Radar over and over until a Shiny patch appears.
 
===Diamond, Pearl, and Platinum===
[[File:Bag Poké Radar Sprite.png|frame|right]]
[[File:Bag Poké Radar Sprite.png|frame|right]]
After the {{player}} has seen every Pokémon in the [[List of Pokémon by Sinnoh Pokédex number|Sinnoh Pokédex]], they will be able to meet [[Professor Oak]] in [[Professor Rowan]]'s lab in [[Sandgem Town]]. After Oak upgrades the [[Pokédex]] to the [[National Pokédex|National model]], Rowan will give the player the Poké Radar but will not explain it very thoroughly. In {{game|Platinum}} the opposite-gender character, Dawn or Lucas, do however - when spoken to they give a practical demonstration on [[Sinnoh Route 202|Route 202]] if the player has received an {{p|Eevee}} from [[Bebe]] in [[Hearthome City]].
The Poké Radar is obtained from [[Professor Rowan]] in his lab immediately after receiving the [[National Pokédex]] from [[Professor Oak]]; however, he will not explain how it works very thoroughly. In {{game|Platinum}}, once the player receives an {{p|Eevee}} from [[Bebe]] in [[Hearthome City]]{{fact}}, the [[player character]] of the opposite gender of the player (Dawn or Lucas) will give a more practical demonstration on [[Sinnoh Route 202|Route 202]].
 
In these games only, the player can encounter certain Pokémon with the Poké Radar that would not be normally found on that route; these Pokémon are often not native to the [[Sdex|Sinnoh regional Pokédex]]. For example, the Poké Radar is the only way to encounter a {{p|Nidoran♀}} on [[Sinnoh Route 201|Route 201]].


It can only be used in the standard [[tall grass]], while on foot, at which point a tune will begin to play, and up to four patches of the long grass may begin to move for a brief period of time (in which the player cannot move). Patches that shake more violently than others are often rarer Pokémon; some Pokémon can only be found using the Poké Radar. When a player walks into a patch of grass that was shaking, a {{pkmn|battle}} with a wild Pokémon will instantly begin. [[Roaming Pokémon]] cannot be encountered while using the Poké Radar.  Like the [[Vs. Seeker]], the Radar's battery must be charged after use by walking around. It takes fifty steps to fully charge the Poké Radar. It is possible for the Poké Radar to find no wild Pokémon, in which case the message "''The grassy patch remained silent...''" will be displayed. There is a very rare type of shaking grass that glows white twice rather than shaking. This special kind of grass always holds a {{Shiny}} Pokémon.
When the Poké Radar is used, the game will select four random squares 1, 2, 3, and 4 steps away from the player. If these squares contain a patch of grass, that patch will shake. If fewer than four patches of grass are seen shaking, then the randomly selected square did not contain a patch of grass. If zero patches of grass are selected, the game will display the message "''The grassy patch remained silent...''" and the chain will automatically break.


The game generates up to 4 patches of shaking grass each time the radar is activated. There is potentially one patch of shaking grass in each "ring" of grass around the spot where the player is, up to 4 steps away. Each "ring" consists  of all the grass patches that are a certain number of spaces from the player, vertically, horizontally or diagonally. For example, the first "ring" consist of all the patches of grass that are just 1 step from the player, (forming a 3x3 square), the second "ring" are all the patches that are 2 steps from the player (forming a 5x5 square), and so on. It is possible that less than 4 patches of grass are seen shaking. That means that the patch that was selected by the game to shake was not a patch of grass.
It is known that the farthest patch (the one 4 steps away) is the most likely to continue a chain. Certain formations of grass patches are also known to be more or less likely to continue a chain.<!-- Add Smogon reference link later-->


If the Pokémon that is found is [[fainting|knocked out]] or {{pkmn2|caught|captured}} in a [[Poké Ball]], a ''chain'' will begin. These chains consist of multiple members of the same [[Pokémon]] species encountered one after another. A chain breaks if the player finds a Pokémon other than the one that is being chained, if he/she runs from a battle or if they find any Pokémon outside the shaking grass (even if it is of the same species that is being chained). Therefore, it is recommended that [[Repel]] is used in order to ensure this and achieve a higher chain. Entering the patch of shaking grass that is the farthest away from the previous patch of grass (in the fourth "ring" of grass) increases the chances of meeting the same kind of Pokémon consecutively. If, in the middle of a chain, a Pokémon ceases to become available (such as a [[Pokémon outbreak|swarming Pokémon]]), that Pokémon will continue to be available until the chain is broken. The player can "reset" the radar in the middle of the chain without breaking it, simply by recharging the radar and avoiding the current grass patches that have Pokémon in them. When activated again, the radar will generate new patches and the old ones become normal grass patches.
If a [[Pokémon outbreak|swarm]] ends while a chain is in progress, or a Pokémon otherwise ceases to become available, then that Pokémon will continue to be available until the chain is broken.


The chance of finding a {{Shiny}} Pokémon patch increases the longer the chain is. This chance maxes out at chain #40, in which the chance of finding a shiny grass patch is 1/200, a substantial increase from the usual 1/8192. Furthermore, the shiny grass patch always contains the Pokémon that is being chained, so there is no risk of breaking the chain when entering one. A Shiny Pokémon can appear in a normal grass patch, however, but the chances of that happening are the same as normal.
The probability of encountering a Shiny Pokémon becomes maximized at a chain length of 40, at approximately 1/200. This is a substantial increase from the usual probability of 1/8192. Since up to four patches of grass appear each time the Poké Radar is used, and each has an independent 1/200 chance, the overall probability of finding at least one Shiny patch for each reset of the Poké Radar is about 1/50. Entering a Shiny patch will never break a chain.


One of the many functions of the [[Pokétch]] is to {{DL|Pokétch|Trainer Counter|display the current chain}} and the three best chains made so far.
One of the many functions of the [[Pokétch]] is to {{DL|Pokétch|Trainer Counter|display the current chain}} and the three best chains made so far.


===Probability===
====Shiny Probability====
[[File:PokéRadarShinyProbability_IV.png|thumb|right|The formula for the probability of finding a Shiny Pokémon. n<sub>c</sub> is the number of Pokémon in the chain, up to 40.]]
[[File:PokéRadarShinyProbability_IV.png|thumb|right|The formula for the probability of finding a Shiny Pokémon. n<sub>c</sub> is the number of Pokémon in the chain, up to 40.]]
The likelihood of encountering a Shiny Pokémon increases gradually as the chain grows in number of encounters. Based on the formula depicted at right, the probabilities can be approximated as 1/8000 for a chain of 1, 1/7800 for a chain of 2, and so on up to 1/200 for a chain of 40. However, due to in-game rounding errors, a more accurate list of probabilities is as follows:
 
Based on the formula depicted at right, the probability of encountering a Shiny Pokémon can be approximated as 1/8000 for a chain of 1, 1/7800 for a chain of 2, 1/7600 for a chain of 3, and so on up to 1/200 for a chain of 40. Note that it takes a while for a chain to start paying off - the probability does not exceed that of the [[Masuda method]] until a chain length of 33. After that point, the probabilities start to increase very strongly, with a chain of 40 having double the probability (1/200) compared to a chain of 39 (1/400).
 
As all Pokémon games prior to Generation V perform calculations strictly with integers, there exist some roundoff errors in the probability determination (as noted by the floor function in the formula). A game-accurate list of probabilities for each chain is as follows:


{| class="roundy" style="background:#{{key items color}}; border: 3px solid #{{key items color dark}}"
{| class="roundy" style="background:#{{key items color}}; border: 3px solid #{{key items color dark}}"
Line 149: Line 167:
|}
|}


Since the probability doesn't increase after 40, the player can simply keep recharging and resetting the radar continuously until a shiny patch is seen. The probability goes up very strongly near the end—going from 39 to 40 doubles it—meaning a chain doesn't start seriously paying off until it's well past 30.
====List of Radar-exclusive Pokémon====
 
===Flavor text===
{{movedesc|key items}}
{{movedescentry|{{gameabbrev3|DPPt}}<br>{{gameabbrev3|HGSS}}{{tt|*|Unobtainable}}<br>{{gameabbrev3|XY}}|A tool that can search out Pokémon that are hiding in grass. Its battery is recharged as you walk.}}
|}
|}
 
===List of Radar-exclusive Pokémon===
{| class="roundy" style="margin:auto; background:#{{key items color}}; border: 3px solid #{{key items color dark}}"
{| class="roundy" style="margin:auto; background:#{{key items color}}; border: 3px solid #{{key items color dark}}"
|- style="background:#{{key items color light}}"
|- style="background:#{{key items color light}}"
Line 518: Line 528:
|}
|}


==In HeartGold and SoulSilver==
===In HeartGold and SoulSilver===
{{main|Pokéwalker#Poké Radar|Pokéwalker}}
{{main|Pokéwalker#Poké Radar|Pokéwalker}}
On the [[Pokéwalker]] that is bundled with [[Pokémon HeartGold and SoulSilver Versions]] there is a primitive version of the Poké Radar, which costs 10 Watts to use. In this Poké Radar, there are four patches of grass, one of which will display a '!' which indicates the presence of a wild Pokémon (or a '!!' or '!!!' depending on the Pokémon's rarity). As with chaining in the main series games, chaining is also possible in the Pokéwalker, but it is dependent on timing and the amount of steps taken. If the player waits a while after a '!' appears and click it, there is a chance that he/she may get another '!' patch, over-riding the previous one. If the player continues this trend he/she will get a '!!' patch , and then a '!!!' patch after that. The timing needed to wait seems to vary between the rarity of the Pokémon, with rarer Pokémon needing less time.
The Poké Radar is not normally obtainable in the main game; however, a primitive version of the Poké Radar exists on the bundled [[Pokéwalker]].


==In X and Y==
The Pokéwalker's Poké Radar costs 10 Watts to use, and is the only way to encounter any wild Pokémon at all on the device. Similar to {{game2|Diamond|Pearl|Platinum}}, these Pokémon are often difficult or impossible to otherwise find in the main game.
The Poké Radar makes a return in Pokémon X and Y, functioning much the same as in Diamond, Pearl, and Platinum. It is received by the player once he or she has defeated the Elite Four, by talking to the scientist on the top right of the second floor of Professor Sycamore's Lab. It can not be used in the [[Friend Safari]] or while using the {{DL|Transportation in the Pokémon world|Bicycle or Roller skates}}.
 
When used, four patches of grass will appear on-screen, one of which will randomly display a '!' symbol for a short period of time. If the player successfully selects that grass patch before the '!' disappears, then either a battle with a wild Pokémon will begin or there will be a delay and another random grass patch will display a second '!'. Again, if the player successfully selects the '!' patch before it disappears, a battle may begin or a third patch may display '!!'. Yet again, if the player successfully selects the '!!' patch, a battle may begin or a fourth patch may display '!!!'; the fourth patch will always start a battle should the player reach that point. Patches with greater numbers of exclamation points indicate rarer wild Pokémon; the mechanics and precise timing required may be considered a primitive form of chaining.
 
===In X and Y===
After being absent in Generation V, the Poké Radar returns in Pokémon X and Y. It is received by the player once he or she has defeated the Elite Four, by talking to the scientist on the top right of the second floor of Professor Sycamore's Lab.
 
As in Diamond, Pearl, and Platinum, the Poké Radar cannot be used while using the {{DL|Transportation in the Pokémon world|Bicycle or Roller skates}}. It also cannot be used in the [[Friend Safari]]. However, it can be used in flower beds the same way as in tall grass.
 
Unlike in Diamond, Pearl, and Platinum, there are no Pokémon species exclusive to the Radar. All wild Pokémon encountered will be the same as those encountered normally in the area.
 
Once per day, the player can speak to the scientist who gave the Poké Radar, and he will assign a species of Pokémon for the player to study. If the player successfully makes a chain of that Pokémon and returns, the scientist will reward the player with an item.
 
Chains and other specific mechanics are believed to be very similar to that of Diamond, Pearl, and Platinum, but more exact details are currently unknown.


===Flavor text===
===Flavor text===
{{movedesc|key items}}
{{movedesc|key items}}
{{movedescentry|{{gameabbrev3|XY}}|A tool that can search out Pokémon that are hiding in the tall grass. Its battery is recharged as you walk.}}
{{movedescentry|{{gameabbrev3|DPPt}}<br>{{gameabbrev3|HGSS}}{{tt|*|Unobtainable}}<br>{{gameabbrev3|XY}}|A tool that can search out Pokémon that are hiding in grass. Its battery is recharged as you walk.}}
|}
|}
|}
|}
Blueapple128
2,613

edits

Retrieved from "https://bulbapedia.bulbagarden.net/wiki/Special:MobileDiff/2058971"