74 lines
2.6 KiB
Markdown
74 lines
2.6 KiB
Markdown
---
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title: Player Physics
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layout: default
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root: ../../
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idx: 4.4
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redirect_from: /en/chapters/player_physics.html
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---
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## Introduction
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Player physics can be modified using physics overrides. Physics overrides can set the
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walking speed, jump speed and gravity constants. Physics overrides are set on a player
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by player basis, and are multipliers. For example, a value of 2 for gravity would make
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gravity twice as strong.
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* [Basic Example](#basic_example)
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* [Available Overrides](#available_overrides)
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* [Mod Incompatibility ](#mod_incompatibility)
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* [Your Turn](#your_turn)
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## Basic Example
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Here is an example of how to add an antigravity command, which
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puts the caller in low G:
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{% highlight lua %}
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minetest.register_chatcommand("antigravity", {
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func = function(name, param)
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local player = minetest.get_player_by_name(name)
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player:set_physics_override({
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gravity = 0.1 -- set gravity to 10% of its original value
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-- (0.1 * 9.81)
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})
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end
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})
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{% endhighlight %}
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## Available Overrides
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player:set_physics_override() is given a table of overrides.\\
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According to [lua_api.txt]({{ page.root }}lua_api.html#player-only-no-op-for-other-objects),
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these can be:
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* speed: multiplier to default walking speed value (default: 1)
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* jump: multiplier to default jump value (default: 1)
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* gravity: multiplier to default gravity value (default: 1)
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* sneak: whether player can sneak (default: true)
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### Old Movement Behaviour
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Player movement prior to the 0.4.16 release included the sneak glitch, which
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allows various movement glitches, including the ability
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to climb an 'elevator' made from a certain placement of nodes by sneaking
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(pressing shift) and pressing space to ascend. Though the behaviour was
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unintended, it has been preserved in overrides due to its use on many servers.
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Two overrides are needed to fully restore old movement behaviour:
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* new_move: whether the player uses new movement (default: true)
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* sneak_glitch: whether the player can use 'sneak elevators' (default: false)
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## Mod Incompatibility
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Please be warned that mods which override the same physics value of a player tend
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to be incompatible with each other. When setting an override, it overwrites
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any overrides that have been set before. This means that if multiple overrides set a
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player's speed, only the last one to run will be in effect.
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## Your Turn
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* **Sonic**: Set the speed multiplier to a high value (at least 6) when a player joins the game.
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* **Super bounce**: Increase the jump value so that the player can jump 20 meters (1 meter is 1 node).
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* **Space**: Make gravity decrease as the player gets higher.
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