One Button Challenge: Difference between revisions

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The challenge defines buttons as the controller inputs that are either pressed or unpressed at a given time, including the face buttons, D-pad directions, shoulders, and trigger. The Control Stick is not counted as a button due to its geometric input space; using only the stick is instead tracked under the [[Buttonless Challenge]].
The challenge defines buttons as the controller inputs that are either pressed or unpressed at a given time, including the face buttons, D-pad directions, shoulders, and trigger. The Control Stick is not counted as a button due to its geometric input space; using only the stick is instead tracked under the [[Buttonless Challenge]].


Because the B button is the only known viable button choice to complete any mission, the OBC is effectively a subset of the A and [[Z Button Challenge]]s, and the opposite of the [[B Button Challenge]].
Because [[B button|{{button|B}}]] is the only known viable button choice to complete any mission, the OBC is effectively a subset of the A and [[Z Button Challenge]]s, and the opposite of the [[B Button Challenge]].


==Buttons==
==Buttons==
The Nintendo 64 controller has 14 different buttons:
The Nintendo 64 controller has 14 different buttons:


;D-pad
;{{button|D}}
:The D-pad consists of four buttons, but these have no use during normal gameplay.
:The D-pad consists of four buttons, but these have no use during normal gameplay.
;L button
;{{button|L}}
:Also has no use during normal gameplay.
:Also has no use during normal gameplay.
;R button
;{{button|R}}
:Switches between Lakitu Cam and Mario/Fixed Cam. The [[camera]] angle can have niche impacts on the game state, as in the [[Behind Camera Anywhere]] glitch. However, switching camera modes is not known to be useful without also controlling Mario by using other inputs.
:Switches between Lakitu Cam and Mario/Fixed Cam. The [[camera]] angle can have niche impacts on the game state, as in the [[Behind Camera Anywhere]] glitch. However, switching camera modes is not known to be useful without also controlling Mario by using other inputs.
;C buttons
;{{button|C}}
:The left and right C buttons rotate the camera, and the up and down C buttons enter and exit First-Person Mode. While entering First-Person mode does change Mario's [[action]], it does not let him move around and therefore does not control him in a useful way.
:{{button|C<>}} rotates the camera, and {{button|C^v}} enters and exits First-Person Mode. While entering First-Person mode does change Mario's [[action]], it does not let him move around and therefore does not control him in a useful way.
;Start button
;{{button|Start}}
:Pauses and resumes the game. [[Pause buffering]] can manipulate the [[global timer]], which can only slightly affect game state without other input. Pressing Start is required to progress past the title screen, and can then load file A without any other input, but becomes unproductive afterwards.
:Pauses and resumes the game. [[Pause buffering]] can manipulate the [[global timer]], which can only slightly affect game state without other input. Pressing Start is required to progress past the title screen, and can then load file A without any other input, but becomes unproductive afterwards.
;A button
;{{button|A}}
:Lets Mario [[jump]]. While jumping is fundamental in normal play, here Mario can only jump in place at the starting point, not move horizontally. If Mario spawns in [[water]], as in [[Dire, Dire Docks]] or the [[Secret Aquarium]], the A button lets him swim forward until he reaches land or is stopped by a wall. None of these functions are known to be productive from any starting position without other controls.
:Lets Mario [[jump]]. While jumping is fundamental in normal play, here Mario can only jump in place at the starting point, not move horizontally. If Mario spawns in [[water]], as in [[Dire, Dire Docks]] or the [[Secret Aquarium]], the A button lets him swim forward until he reaches land or is stopped by a wall. None of these functions are known to be productive from any starting position without other controls.
;B button
;{{button|B}}
:Lets Mario punch, grab, and throw. Punching moves Mario forward slightly, which is the only viable way to move horizontally on land. (In water, grabbing also moves forward, but as with the A button, this alone is not productive from any starting position.)
:Lets Mario punch, grab, and throw. Punching moves Mario forward slightly, which is the only viable way to move horizontally on land. (In water, grabbing also moves forward, but as with the A button, this alone is not productive from any starting position.)
;Z button
;{{button|Z}}
:Lets Mario crouch. Again, without other controls, he can only do so in place at the starting point. Does nothing in water.
:Lets Mario crouch. Again, without other controls, he can only do so in place at the starting point. Does nothing in water.


==Disadvantages==
==Disadvantages==
Only using one button imposes many disadvantages and restrictions:
Only using one button imposes many disadvantages and restrictions:
*A full-game run is impossible, because the Start button cannot dismiss the starting textbox and any other choice of button cannot progress past the title screen. Therefore, this challenge can only be analyzed on a ''single-star basis''.
*A full-game run is impossible, because {{button|Start}} cannot dismiss the starting textbox and any other choice of button cannot progress past the title screen. Therefore, this challenge can only be analyzed on a ''single-star basis''.
*Punching, the only reliable method of moving forward, is extremely slow, which leaves Mario highly vulnerable to enemies and other obstacles.
*Punching, the only reliable method of moving forward, is extremely slow, which leaves Mario highly vulnerable to enemies and other obstacles.
*Punching only moves Mario forward.
*Punching only moves Mario forward.
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|[[Shifting Sand Land|Shifting&nbsp;Sand&nbsp;Land]]
|[[Shifting Sand Land|Shifting&nbsp;Sand&nbsp;Land]]
|[[In the Talons of the Big Bird]]
|[[In the Talons of the Big Bird]]
|style="text-align: center;"|B
|style="text-align: center;"|{{button|B}}
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|Shifting Sand Land
|Shifting Sand Land
|[[Shining Atop the Pyramid]]
|[[Shining Atop the Pyramid]]
|style="text-align: center;"|B
|style="text-align: center;"|{{button|B}}
|style="text-align: end;"|1,450
|style="text-align: end;"|1,450
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|Shifting Sand Land
|Shifting Sand Land
|[[100 Coin Star|100 Coins]]
|[[100 Coin Star|100 Coins]]
|style="text-align: center;"|B
|style="text-align: center;"|{{button|B}}
|style="text-align: end;"|9,048
|style="text-align: end;"|9,048
|style="text-align: end;"|8:16:06.27
|style="text-align: end;"|8:16:06.27
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