Bulbapedia

Headbutt tree: Difference between revisions

Article Discussion

Headbutt tree (view source)

Revision as of 10:45, 19 October 2015

8,042 bytes added ,  19 October 2015
Gen II details (correct--I hope...), "courtesy" of UPokecenter. Still wanna test those mechanics... Gen IV remains messy at best
m (Clearing up move tag)
(Gen II details (correct--I hope...), "courtesy" of UPokecenter. Still wanna test those mechanics... Gen IV remains messy at best)
Line 1: Line 1:
{{incomplete|article|General details on Headbutt trees and its mechanic}}
{{incomplete|article|Generation IV mechanics}}
:''Main article: [[Headbutt (move)]]''
'''Headbutt trees''' are special trees found in the [[Johto]] region that a Pokémon can use {{m|Headbutt}} on to encounter [[wild Pokémon]]. They are only found in the games based in Johto: {{game2|Gold|Silver|Crystal}} and {{game|HeartGold and SoulSilver|s}}


This is a list of '''wild Pokémon that can be encountered by using Headbutt'''.
==Generation II==
[[File:Headbutt II OW.png|thumb|{{m|Headbutt}}ing a tree in [[Generation II]]]]
{{incomplete|section|Confirm that formulas/algorithms apply to both Gold/Silver and Crystal (and not only to one)}}
In [[Generation II]], most outdoor areas contain a number of special trees ([[File:GSC Headbutt.png]]) that Pokémon can use {{m|Headbutt}} on. These trees are distinct from other trees that either take up two vertical paces or that have rounded tops. When a Pokémon uses Headbutt on a tree, a wild Pokémon may drop out of the tree. Depending on the [[time]] of day, the Pokémon that falls out may be {{status|Sleep|asleep}}. Some Pokémon can only be caught by this method (e.g., {{p|Pineco}}, {{p|Heracross}}).
 
All headbuttable trees contain wild Pokémon, but different trees have different chances of creating an encounter after Headbutt is used. The headbuttable trees in an area also generate their encounters from different sets of Pokémon depending on whether they have moderate encounter chances or low encounter chances. For example, on {{rt|44|Johto}}, trees with moderate encounter chances may only contain {{p|Spearow}} or {{p|Aipom}}, while trees with a low encounter chance may also contain {{p|Heracross}}.
 
===Mechanics===
Every headbuttable tree can be associated with an index from 0 to 9. Depending on the player's [[Trainer ID number|Trainer ID]], half of those indices correspond to trees with moderate encounter chances, while the other half correspond to trees with a low encounter chance.
 
:<code>''index'' = ( ( ''X'' * ''Y'' + ''X'' + ''Y'' ) / 5 ) [[wp:modulo operation|%]] 10</code>
 
To gain some insight into this formula, it is possible to "fix" one dimension and traverse the other, since ''X'' and ''Y'' are freely interchangeable. Substituting "Z" for one axis (the fixed axis) and "n" for the other (the axis that will be traversed), the formula becomes:
:<code>( ( ''Z'' * ''n'' + ''Z'' + ''n'' ) / 5 ) % 10</code>
which then becomes:
:<code>( ( (''Z'' + 1) * ''n'' + ''Z'' ) / 5 ) % 10</code>
 
This result shows that, if a single row or column of trees is traversed (i.e., if ''n'' changes), moving from one tree to the next changes the index (before the modulo operation) by <code>(''Z'' + 1) / 5</code>, where ''Z'' is the distance of that row or column from its origin edge (north or west). In short, the closer a row or column is to the edge (the smaller ''Z'' is), the slower the indices of those trees will change as the row or column is traversed.
 
The encounter chances associated with a tree of a given index are determined by a "pivot" index determined by the player's Trainer ID.


==Generation II==
:<code>''pivot'' = ''trainer_id'' % 10</code>
{{incomplete|section|Percentages for appearances}}
 
In Generation II games, Pokémon are grouped by terrain, either '''Forest''' or '''Mountain'''.
If a tree's index matches the pivot index, its encounter chances are 80%; the next four tree indices (effectively, <code>( ''pivot'' + ''n'' ) % 10</code>, where ''n'' = 1...4) have encounter chances of 50%; and the remaining indices have encounter chances of 10%. The 80% and 50% indices make up the "moderate" encounter chances referred to above, and share a common set of Pokémon from which encounters are created, while the 10% indices draw from a different set of Pokémon for encounters.
 
===Pokémon===
====Pokémon Gold and Silver====
Wild Pokémon encounters from headbuttable trees in {{game|Gold and Silver|s}} fall into two simple groups.
 
* [[Azalea Town]], [[Ilex Forest]], [[Lake of Rage]], {{rt|26|Kanto}}, {{rtn|27|Kanto}}, {{rtn|34|Johto}}, {{rtn|35|Johto}}, {{rtn|36|Johto}}, {{rtn|37|Johto}}, {{rtn|38|Johto}}, {{rtn|39|Johto}}
{{catch/header|forest|4}}
{{catch/div|forest|Moderate-encounter trees}}
{{catch/entry2|010|Caterpie|yes|no|no|Headbutt|10|all=65%|type1=Bug}}
{{catch/entry2|011|Metapod|yes|no|no|Headbutt|10|all=15%|type1=Bug}}
{{catch/entry2|012|Butterfree|yes|no|no|Headbutt|10|all=5%|type1=Bug|type2=Flying}}
{{catch/entry2|013|Weedle|no|yes|no|Headbutt|10|all=65%|type1=Bug|type2=Poison}}
{{catch/entry2|014|Kakuna|no|yes|no|Headbutt|10|all=15%|type1=Bug|type2=Poison}}
{{catch/entry2|015|Beedrill|no|yes|no|Headbutt|10|all=5%|type1=Bug|type2=Poison}}
{{catch/entry2|102|Exeggcute|yes|yes|no|Headbutt|10|all=15%|type1=Grass|type2=Psychic}}
{{catch/div|forest|Low-encounter trees}}
{{catch/entry2|010|Caterpie|yes|no|no|Headbutt|10|all=50%|type1=Bug}}
{{catch/entry2|012|Butterfree|yes|no|no|Headbutt|10|all=5%|type1=Bug|type2=Flying}}
{{catch/entry2|013|Weedle|no|yes|no|Headbutt|10|all=50%|type1=Bug|type2=Poison}}
{{catch/entry2|015|Beedrill|no|yes|no|Headbutt|10|all=5%|type1=Bug|type2=Poison}}
{{catch/entry2|102|Exeggcute|yes|yes|no|Headbutt|10|all=15%|type1=Grass|type2=Psychic}}
{{catch/entry2|204|Pineco|yes|yes|no|Headbutt|10|all=30%|type1=Bug}}
{{catch/footer|forest}}
 
* {{rt|29|Johto}}, {{rtn|30|Johto}}, {{rtn|31|Johto}}, {{rtn|32|Johto}}, {{rtn|33|Johto}}, {{rtn|42|Johto}}, {{rtn|43|Johto}}, {{rtn|44|Johto}}, {{rtn|45|Johto}}, {{rtn|46|Johto}}
{{catch/header|mountain|4}}
{{catch/div|mountain|Moderate-encounter trees}}
{{catch/entry2|021|Spearow|yes|yes|no|Headbutt|10|all=80%|type1=Normal|type2=Flying}}
{{catch/entry2|190|Aipom|yes|yes|no|Headbutt|10|all=20%|type1=Normal}}
{{catch/div|mountain|Low-encounter trees}}
{{catch/entry2|021|Spearow|yes|yes|no|Headbutt|10|all=50%|type1=Normal|type2=Flying}}
{{catch/entry2|190|Aipom|yes|yes|no|Headbutt|10|all=20%|type1=Normal}}
{{catch/entry2|214|Heracross|yes|yes|no|Headbutt|10|all=30%|type1=Bug|type2=Fighting}}
{{catch/footer|mountain}}
 
====Pokémon Crystal====
In {{game|Crystal}}, wild Pokémon encounters from headbuttable trees fall into six different groups.
 
* [[Azalea Town]], {{rt|33|Johto}}, {{rtn|42|Johto}}
{{catch/header|mountain|4}}
{{catch/div|mountain|Moderate-encounter trees}}
{{catch/entry2|021|Spearow|no|no|yes|Headbutt|10|all=65%|type1=Normal|type2=Flying}}
{{catch/entry2|023|Ekans|no|no|yes|Headbutt|10|all=15%|type1=Poison}}
{{catch/entry2|190|Aipom|no|no|yes|Headbutt|10|all=20%|type1=Normal}}
{{catch/div|mountain|Low-encounter trees}}
{{catch/entry2|021|Spearow|no|no|yes|Headbutt|10|all=50%|type1=Normal|type2=Flying}}
{{catch/entry2|190|Aipom|no|no|yes|Headbutt|10|all=20%|type1=Normal}}
{{catch/entry2|214|Heracross|no|no|yes|Headbutt|10|all=30%|type1=Bug|type2=Fighting}}
{{catch/footer|mountain}}
 
* [[Ilex Forest]]
{{catch/header|forest|4}}
{{catch/div|forest|Moderate-encounter trees}}
{{catch/entry2|012|Butterfree|no|no|yes|Headbutt|10|all=5%|type1=Bug|type2=Flying}}
{{catch/entry2|015|Beedrill|no|no|yes|Headbutt|10|all=5%|type1=Bug|type2=Poison}}
{{catch/entry2|163|Hoothoot|no|no|yes|Headbutt|10|all=50%|type1=Normal|type2=Flying}}
{{catch/entry2|164|Noctowl|no|no|yes|Headbutt|10|all=10%|type1=Normal|type2=Flying}}
{{catch/entry2|204|Pineco|no|no|yes|Headbutt|10|all=30%|type1=Bug}}
{{catch/div|forest|Low-encounter trees}}
{{catch/entry2|010|Caterpie|no|no|yes|Headbutt|10|all=15%|type1=Bug}}
{{catch/entry2|011|Metapod|no|no|yes|Headbutt|10|all=5%|type1=Bug}}
{{catch/entry2|013|Weedle|no|no|yes|Headbutt|10|all=15%|type1=Bug|type2=Poison}}
{{catch/entry2|014|Kakuna|no|no|yes|Headbutt|10|all=5%|type1=Bug|type2=Poison}}
{{catch/entry2|163|Hoothoot|no|no|yes|Headbutt|10|all=60%|type1=Normal|type2=Flying}}
{{catch/footer|forest}}
 
* [[Lake of Rage]], {{rt|43|Johto}}
{{catch/header|forest|4}}
{{catch/div|forest|Moderate-encounter trees}}
{{catch/entry2|048|Venonat|no|no|yes|Headbutt|10|all=15%|type1=Bug|type2=Poison}}
{{catch/entry2|102|Exeggcute|no|no|yes|Headbutt|10|all=20%|type1=Grass|type2=Psychic}}
{{catch/entry2|163|Hoothoot|no|no|yes|Headbutt|10|all=65%|type1=Normal|type2=Flying}}
{{catch/div|forest|Low-encounter trees}}
{{catch/entry2|102|Exeggcute|no|no|yes|Headbutt|10|all=20%|type1=Grass|type2=Psychic}}
{{catch/entry2|163|Hoothoot|no|no|yes|Headbutt|10|all=50%|type1=Normal|type2=Flying}}
{{catch/entry2|204|Pineco|no|no|yes|Headbutt|10|all=30%|type1=Bug}}
{{catch/footer|forest}}
 
* {{rt|26|Kanto}}, {{rtn|27|Kanto}}, {{rtn|32|Johto}}
{{catch/header|forest|4}}
{{catch/div|forest|Moderate-encounter trees}}
{{catch/entry2|023|Ekans|no|no|yes|Headbutt|10|all=15%|type1=Poison}}
{{catch/entry2|102|Exeggcute|no|no|yes|Headbutt|10|all=20%|type1=Grass|type2=Psychic}}
{{catch/entry2|163|Hoothoot|no|no|yes|Headbutt|10|all=65%|type1=Normal|type2=Flying}}
{{catch/div|forest|Low-encounter trees}}
{{catch/entry2|102|Exeggcute|no|no|yes|Headbutt|10|all=20%|type1=Grass|type2=Psychic}}
{{catch/entry2|163|Hoothoot|no|no|yes|Headbutt|10|all=50%|type1=Normal|type2=Flying}}
{{catch/entry2|204|Pineco|no|no|yes|Headbutt|10|all=30%|type1=Bug}}
{{catch/footer|forest}}


===Forest Pokémon===
* {{rt|29|Johto}}, {{rtn|30|Johto}}, {{rtn|31|Johto}}, {{rtn|34|Johto}}, {{rtn|35|Johto}}, {{rtn|36|Johto}}, {{rtn|37|Johto}}, {{rtn|38|Johto}}, {{rtn|39|Johto}}
* '''Forest''' locations are: [[Azalea Town]], [[Ilex Forest]], [[National Park]], [[Lake of Rage]], {{rt|26|Kanto}}, {{rtn|27|Kanto}}, {{rtn|35|Johto}}, {{rtn|36|Johto}}, {{rtn|37|Johto}}, {{rtn|38|Johto}}, {{rtn|39|Johto}}
{{catch/header|forest|4}}
{{catch/header|forest|4}}
{{catch/entry2|010|Caterpie|yes|no|yes|Headbutt|10|all=Common|type1=Bug}}
{{catch/div|forest|Moderate-encounter trees}}
{{catch/entry2|011|Metapod|yes|no|yes|Headbutt|10|all=Uncommon|type1=Bug}}
{{catch/entry2|102|Exeggcute|no|no|yes|Headbutt|10|all=20%|type1=Grass|type2=Psychic}}
{{catch/entry2|012|Butterfree|yes|no|yes|Headbutt|10|all=Rare|type1=Bug|type2=Flying}}
{{catch/entry2|163|Hoothoot|no|no|yes|Headbutt|10|all=50%|type1=Normal|type2=Flying}}
{{catch/entry2|013|Weedle|no|yes|yes|Headbutt|10|all=Common|type1=Bug|type2=Poison}}
{{catch/entry2|165|Ledyba|no|no|yes|Headbutt|10|all=15%|type1=Bug|type2=Flying}}
{{catch/entry2|014|Kakuna|no|yes|yes|Headbutt|10|all=Uncommon|type1=Bug|type2=Poison}}
{{catch/entry2|167|Spinarak|no|no|yes|Headbutt|10|all=15%|type1=Bug|type2=Poison}}
{{catch/entry2|015|Beedrill|no|yes|yes|Headbutt|10|all=Rare|type1=Bug|type2=Poison}}
{{catch/div|forest|Low-encounter trees}}
{{catch/entry2|023|Ekans|yes|yes|yes|Headbutt|10|all=Uncommon|type1=Poison}}
{{catch/entry2|102|Exeggcute|no|no|yes|Headbutt|10|all=20%|type1=Grass|type2=Psychic}}
{{catch/entry2|102|Exeggcute|yes|yes|yes|Headbutt|10|all=Uncommon|type1=Grass|type2=Psychic}}
{{catch/entry2|163|Hoothoot|no|no|yes|Headbutt|10|all=50%|type1=Normal|type2=Flying}}
{{catch/entry2|163|Hoothoot|yes|yes|yes|Headbutt|10|all=Common|type1=Normal|type2=Flying}}
{{catch/entry2|204|Pineco|no|no|yes|Headbutt|10|all=30%|type1=Bug}}
{{catch/entry2|164|Noctowl|yes|yes|yes|Headbutt|10|all=Rare|type1=Normal|type2=Flying}}
{{catch/entry2|165|Ledyba|no|yes|yes|Headbutt|10|all=Common|type1=Bug|type2=Flying}}
{{catch/entry2|167|Spinarak|yes|no|yes|Headbutt|10|all=Common|type1=Bug|type2=Poison}}
{{catch/entry2|204|Pineco|yes|yes|yes|Headbutt|10|all=Uncommon|type1=Bug}}
{{catch/footer|forest}}
{{catch/footer|forest}}


===Mountain Pokémon===
* {{rt|44|Johto}}, {{rtn|45|Johto}}, {{rtn|46|Johto}}
* '''Mountain''' locations are: {{rt|29|Johto}}, {{rtn|30|Johto}}, {{rtn|31|Johto}}, {{rtn|32|Johto}}, {{rtn|33|Johto}}, {{rtn|42|Johto}}, {{rtn|43|Johto}}, {{rtn|44|Johto}}
{{catch/header|mountain|4}}
{{catch/header|mountain|4}}
{{catch/entry2|165|Ledyba|yes|yes|yes|Headbutt|10|all=Common|type1=Bug|type2=Flying}}
{{catch/div|mountain|Moderate-encounter trees}}
{{catch/entry2|021|Spearow|yes|yes|yes|Headbutt|10|all=Common|type1=Normal|type2=Flying}}
{{catch/entry2|021|Spearow|no|no|yes|Headbutt|10|all=80%|type1=Normal|type2=Flying}}
{{catch/entry2|190|Aipom|yes|yes|yes|Headbutt|10|all=Uncommon|type1=Normal}}
{{catch/entry2|190|Aipom|no|no|yes|Headbutt|10|all=20%|type1=Normal}}
{{catch/entry2|214|Heracross|yes|yes|yes|Headbutt|10|all=Rare|type1=Bug|type2=Fighting}}
{{catch/div|mountain|Low-encounter trees}}
{{catch/entry2|021|Spearow|no|no|yes|Headbutt|10|all=50%|type1=Normal|type2=Flying}}
{{catch/entry2|190|Aipom|no|no|yes|Headbutt|10|all=20%|type1=Normal}}
{{catch/entry2|214|Heracross|no|no|yes|Headbutt|10|all=30%|type1=Bug|type2=Fighting}}
{{catch/footer|mountain}}
{{catch/footer|mountain}}


==Generation IV==
==Generation IV==
[[File:Headbutt IV OW.png|thumb|{{m|Headbutt}}ing a tree in [[Generation IV]]]]
In {{game|HeartGold and SoulSilver|s}}, Pokémon are not grouped by terrain, but now appear in specific locations. Unlike [[Generation II]], not all trees will guarantee an encounter with a wild Pokémon. However, if a tree does cause a wild Pokémon to appear, there is a high chance of encountering a Pokémon again next time, even if [[Repel]] is being used. Likewise, if no Pokémon appears when a tree is Headbutted, no Pokémon will ever appear for that tree.
In {{game|HeartGold and SoulSilver|s}}, Pokémon are not grouped by terrain, but now appear in specific locations. Unlike [[Generation II]], not all trees will guarantee an encounter with a wild Pokémon. However, if a tree does cause a wild Pokémon to appear, there is a high chance of encountering a Pokémon again next time, even if [[Repel]] is being used. Likewise, if no Pokémon appears when a tree is Headbutted, no Pokémon will ever appear for that tree.


Retrieved from "https://bulbapedia.bulbagarden.net/wiki/Special:MobileDiff/2346221"