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Movement steps: Difference between revisions
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Steps are also responsible for detecting collision with [[surfaces]], updating Mario's [[referenced surfaces]], and updating Mario's [[Water|water level]]. However, quarter steps don't detect object collisions or warps. | Steps are also responsible for detecting collision with [[surfaces]], updating Mario's [[referenced surfaces]], and updating Mario's [[Water|water level]]. However, quarter steps don't detect object collisions or warps. | ||
== Stationary Step == | == Stationary Step == | ||
https://github.com/n64decomp/sm64/blob/66018e9f3caaa67399218971d61366cb3f7ba7d7/src/game/mario_step.c#L236 | https://github.com/n64decomp/sm64/blob/66018e9f3caaa67399218971d61366cb3f7ba7d7/src/game/mario_step.c#L236 | ||
# Mario's x and z forward velocity and sliding velocity is set to 0 | # Mario's x and z forward velocity and sliding velocity is set to 0 | ||
# mario_update_moving_sand | # mario_update_moving_sand | ||
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# If updated by moving sand or windy ground, return perform_ground_step | # If updated by moving sand or windy ground, return perform_ground_step | ||
# Else, set Mario's y position to the floor, (possibly causing a [[downwarp]]), and update graphics. Return GROUND_STEP_NONE. | # Else, set Mario's y position to the floor, (possibly causing a [[downwarp]]), and update graphics. Return GROUND_STEP_NONE. | ||
Also see [[Idle#stationary ground step]] | |||
== Air Step == | == Air Step == | ||
''Certain things here are more explained on their individual pages. If something lacks detail, check the link for more information.'' | ''Certain things here are more explained on their individual pages. If something lacks detail, check the link for more information.'' | ||
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## If the position is above OOB but below Mario's current floor height, Mario's height is changed to the floor height and he '''lands'''. | ## If the position is above OOB but below Mario's current floor height, Mario's height is changed to the floor height and he '''lands'''. | ||
## If the position is above OOB but not below Mario's current floor height, Mario's height is set to the new height and he '''hits a wall'''. | ## If the position is above OOB but not below Mario's current floor height, Mario's height is set to the new height and he '''hits a wall'''. | ||
## If the action has the "riding shell" flag and the water level at the position is above the position's floor (up to 78 units above the position): | ## If the action has the <span style="color:green;">"riding shell" flag</span> and the water level at the position is above the position's floor (up to 78 units above the position): | ||
##* The floor height from here on is the water height. | ##* The floor height from here on is the water height. | ||
##* The floor from this point on is a "fake" floor on the surface of the water. | ##* The floor from this point on is a "fake" floor on the surface of the water. | ||
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## If the position's height is 160 units under, at, or above a ceiling and his vertical velocity is positive or zero: | ## If the position's height is 160 units under, at, or above a ceiling and his vertical velocity is positive or zero: | ||
##* Mario's vertical velocity is set to zero. | ##* Mario's vertical velocity is set to zero. | ||
##* If the ceiling above Mario is hangable and the air step has the "check hang" flag, Mario '''hangs'''. (Since this did not use the new position's ceiling/location, this is potentially a [[Hangable Ceiling Upwarp|hangable-ceiling upwarp.]]) | ##* If the ceiling above Mario is hangable and the air step has the <span style="color:green;">"check hang" flag</span>, Mario '''hangs'''. (Since this did not use the new position's ceiling/location, this is potentially a [[Hangable Ceiling Upwarp|hangable-ceiling upwarp.]]) | ||
##* Otherwise, '''nothing happens'''. | ##* Otherwise, '''nothing happens'''. | ||
## If the position's height is 160 units under, at, or above a ceiling and his vertical velocity is negative: | ## If the position's height is 160 units under, at, or above a ceiling and his vertical velocity is negative: | ||
##* If the position's height is at or below Mario's floor height, Mario's height is set to the floor height, and he '''lands'''. | ##* If the position's height is at or below Mario's floor height, Mario's height is set to the floor height, and he '''lands'''. | ||
##* Otherwise, Mario's height is set to the new height and he '''hits a wall'''. | ##* Otherwise, Mario's height is set to the new height and he '''hits a wall'''. | ||
## If there is a wall 30 units above the position but not 150 units above the position and the air step has the "check ledge grab" flag: | ## If there is a wall 30 units above the position but not 150 units above the position and the air step has the <span style="color:green;">"check ledge grab" flag</span>: | ||
##* If Mario's velocity is positive, Mario is pushed by the wall opposite the velocity direction, and there is a floor 60 units behind the wall within 238 units upward, Mario '''ledge grabs'''. (Potentially a [[GLG]]) | ##* If Mario's velocity is positive, Mario is pushed by the wall opposite the velocity direction, and there is a floor 60 units behind the wall within 238 units upward, Mario '''ledge grabs'''. (Potentially a [[GLG]]) | ||
##* Otherwise Mario's position is set to the new position, his floor and floor height are updated, and '''nothing happens'''. | ##* Otherwise Mario's position is set to the new position, his floor and floor height are updated, and '''nothing happens'''. | ||
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# This repeats until Mario encounters something besides '''nothing happens''', up to four times including the initial time. | # This repeats until Mario encounters something besides '''nothing happens''', up to four times including the initial time. | ||
# Mario tracks his "exit", with '''nothing happens''' being tracked if the whole process completed four times. | # Mario tracks his "exit", with '''nothing happens''' being tracked if the whole process completed four times. | ||
=== Perform Air Step === | |||
# Set Mario's wall to null | |||
# (this is a loop) Do 4 times: | |||
## Let the next intended position be Mario's position plus velocity/4 | |||
## Perform an air quarter step, where "new position" means "next intended position" btw, as shown above | |||
## If nothing happens, continue loop, else exit loop | |||
# Let stepResult be the result of the last air quarter step performed | |||
# If Mario's y velocity is positive, set peak height to Mario's y position (the peak height field is used for things like fall damage) | |||
# Mario's step noise is updated based on his floor. | |||
# If Mario is not flying, [[Gravity#Mario|gravity]] is applied. | |||
#[[Vertical Wind|Vertical wind]] is now applied/accounted for. | |||
# Mario's visual position is updated to Mario's position. | |||
# Mario's yaw is updated to match the in-game angle. | |||
# Return stepResult | |||
=== Common Air Step Results === | === Common Air Step Results === | ||
If doing a common air step, Mario now decides what to do based off the "exit" from | If doing a common air step, Mario now decides what to do based off the "exit" from Perform Air Step. Here is what he does for each exit: | ||
* '''Nothing Happens''': | * '''Nothing Happens''': | ||
** Mario's animation is now applied. | ** Mario's animation is now applied. | ||