Add playerphysics and sprint
CasimirKaPazi
parent
f7824aadec
commit
d6b689ae81
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@ -46,7 +46,7 @@ What not to add:
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Voxelgarden should be (in that order):
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a complete game >> easy to maintain >> compatible with minetest game
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a complete game >> easy to maintain >> compatible with minetest game
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License of source code:
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@ -62,7 +62,7 @@ http://www.gnu.org/licenses/lgpl-2.1.html
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For every mod applies the original license. See list below.
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All other media is licenced under Creative Commons BY-SA license.
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beds (LGPL), bones (LGPL), bucket (LGPL), conifer (LGPL), creative (LGPL), default (LGPL), doors (LGPL), dye (LGPL), game_commands(MIT), farming (LGPL), fire (LGPL), flowers (LGPL), footsteps (LGPL), hunger (LGPL), inventory\_plus (GPL), mobs (MIT), mobs\_flat (LGPL), physics (LGPL), player_api (LGPL), stairs (LGPL), stairsplus (zlib/libpng), walls (LGPL) wool (LGPL), zcg (LGPL), xpanes (LGPL)
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beds (LGPL), bones (LGPL), bucket (LGPL), conifer (LGPL), creative (LGPL), default (LGPL), doors (LGPL), dye (LGPL), game_commands(MIT), farming (LGPL), fire (LGPL), flowers (LGPL), footsteps (LGPL), hunger (LGPL), inventory\_plus (GPL), mobs (MIT), mobs\_flat (LGPL), physics (LGPL), player_api (LGPL), playerphysics (MIT), sprint (CC0), stairs (LGPL), stairsplus (zlib/libpng), walls (LGPL) wool (LGPL), zcg (LGPL), xpanes (LGPL)
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Mods equivalent to and mirroring Minetest Game:
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binoculars (MIT), boats (MIT) (except burntime), carts (MIT), dungeon_loot (MIT), env_sounds (MIT), fireflies (MIT), map (MIT), screwdriver (LGPL) (except texture), tnt (MIT) (except textures), vessels (LGPL), weather (MIT)
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@ -39,6 +39,28 @@ function hunger.update_bar(player, full)
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end
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end
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-- Allow mods to tell us that the player is active
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function hunger.active(player)
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if not player then return end
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local name = player:get_player_name()
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player_is_active[name] = true
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end
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function hunger.get(player)
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if not player then return end
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local meta = player:get_meta()
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local full = meta:get_int("hunger")
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return full
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end
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function hunger.set(player, full)
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if not player then return end
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local name = player:get_player_name()
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local meta = player:get_meta()
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hunger.update_bar(player, full)
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meta:set_int("hunger", full)
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end
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-- no_hunger privilege
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minetest.register_privilege("no_hunger", {
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description = S("Player will feel no hunger."),
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@ -0,0 +1,123 @@
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# Player Physics API.
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Version: 1.0.1
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This mod makes it possible for multiple mods to modify player physics (speed, jumping strength, gravity) without conflict.
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## Introduction
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### For players
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Mods and games in Minetest can set physical attributes of players, such as speed and jump strength. For example, player speed could be set to 200%. But the way this works makes it difficult for multiple mods to *modify* physical attributes without leading to conflicts, problems and hilarious bugs, like speed that changes often to nonsense values.
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The Player Physics API aims to resolve this conflict by providing a “common ground” for mods to work together in this regard.
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This mod does nothing on its own, you will only need to install it as dependency of other mods.
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When you browse for mods that somehow mess with player physics (namely: speed, jump strength or gravity) and want to use more than one of them, check out if they support the Player Physics API. If they don't, it's very likely these mods will break as soon you activate more than one of them, for example, if two mods try to set the player speed. If you found such a “hilarious bug”, please report it to the developers of the mods (or games) and point them to the Player Physics API.
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Of course, not all mods need the Player Physics API. Mods that don't touch player physics at all won't need this mod.
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The rest of this document is directed at developers.
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### For developers
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The function `set_physics_override` from the Minetest Lua API allows mod authors to override physical attributes of players, such as speed or jump strength.
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This function works fine as long there is only one mod that sets a particular physical attribute at a time. However, as soon as at least two different mods (that do not know each other) try to change the same player physics attribute using only this function, there will be conflicts as each mod will undo the change of the other mod, as the function sets a raw value. A classic race condition occurs. This is the case because the mods fail to communicate with each other.
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This mod solves the problem of conflicts. It bans the concept of “setting the raw value directly” and replaces it with the concept of factors that mods can add and remove for each attribute. The real physical player attribute will be the product of all active factors.
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## Quick start
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Let's say you have a mod `example` and want to double the speed of the player (i.e. multiply it by a factor of 2), but you also don't want to break other mods that might touch the speed.
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Previously, you might have written something like this:
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`player:set_physics_override({speed=2})`
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However, your mod broke down as soon the mod `example2` came along, which wanted to increase the speed by 50%. In the real game, the player speed randomly switched from 50% and 200% which was a very annoying bug.
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In your `example` mod, you can replace the code with this:
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`playerphysics.add_physics_factor(player, "speed", "my_double_speed", 2)`
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Where `"my_double_speed` is an unique ID for your speed factor.
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Now your `example` mod is interoperable! And now, of course, the `example2` mod has to be updated in a similar fashion.
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## Precondition
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There is only one precondition to using this mod, but it is important:
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Mods *MUST NOT* call `set_physics_override` directly for numerical values. Instead, to modify player physics, all mods that touch player physics have to use this API.
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## Functions
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### `playerphysics.add_physics_factor(player, attribute, id, value)`
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Adds a factor for a player physic and updates the player physics immediately.
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#### Parameters
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* `player`: Player object
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* `attribute`: Which of the physical attributes to change. Any of the numeric values of `set_physics_override` (e.g. `"speed"`, `"jump"`, `"gravity"`)
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* `id`: Unique identifier for this factor. Identifiers are stored on a per-player per-attribute type basis
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* `value`: The factor to add to the list of products
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If a factor for the same player, attribute and `id` already existed, it will be overwritten.
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### `playerphysics.remove_physics_factor(player, attribute, id)`
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Removes the physics factor of the given ID and updates the player's physics.
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#### Parameters
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Same as in `playerphysics.add_physics_factor`, except there is no `value` argument.
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## Examples
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### Speed changes
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Let's assume this mod is used by 3 different mods all trying to change the speed:
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Potions, Exhaustion and Electrocution.
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Here's what it could look like:
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Potions mod:
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```
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playerphysics.add_physics_factor(player, "speed", "run_potion", 2)
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```
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Exhaustion mod:
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```
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playerphysics.add_physics_factor(player, "jump", "exhausted", 0.75)
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```
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Electrocution mod:
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```
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playerphysics.add_physics_factor(player, "jump", "shocked", 0.9)
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```
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When the 3 mods have done their change, the real player speed is simply the product of all factors, that is:
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2 * 0.75 * 0.9 = 1.35
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The final player speed is thus 135%.
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### Speed changes, part 2
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Let's take the example above.
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Now if the Electrocution mod is done with shocking the player, it just needs to call:
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```
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playerphysics.remove_physics_factor(player, "jump", "shocked")
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```
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The effect is now gone, so the new player speed will be:
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2 * 0.75 = 1.5
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### Sleeping
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To simulate sleeping by preventing all player movement, this can be done with this easy trick:
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```
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playerphysics.add_physics_factor(player, "speed", "sleeping", 0)
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playerphysics.add_physics_factor(player, "jump", "sleeping", 0)
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```
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This works regardless of the other factors because 0 times anything equals 0.
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## License
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This mod is free software, released under the MIT License.
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@ -0,0 +1,45 @@
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playerphysics = {}
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local function calculate_attribute_product(player, attribute)
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local a = minetest.deserialize(player:get_meta():get_string("playerphysics:physics"))
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local product = 1
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if a == nil or a[attribute] == nil then
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return product
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end
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local factors = a[attribute]
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if type(factors) == "table" then
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for _, factor in pairs(factors) do
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product = product * factor
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end
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end
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return product
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end
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function playerphysics.add_physics_factor(player, attribute, id, value)
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local meta = player:get_meta()
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local a = minetest.deserialize(meta:get_string("playerphysics:physics"))
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if a == nil then
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a = { [attribute] = { [id] = value } }
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elseif a[attribute] == nil then
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a[attribute] = { [id] = value }
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else
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a[attribute][id] = value
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end
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meta:set_string("playerphysics:physics", minetest.serialize(a))
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local raw_value = calculate_attribute_product(player, attribute)
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player:set_physics_override({[attribute] = raw_value})
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end
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function playerphysics.remove_physics_factor(player, attribute, id)
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local meta = player:get_meta()
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local a = minetest.deserialize(meta:get_string("playerphysics:physics"))
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if a == nil or a[attribute] == nil then
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-- Nothing to remove
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return
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else
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a[attribute][id] = nil
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end
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meta:set_string("playerphysics:physics", minetest.serialize(a))
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local raw_value = calculate_attribute_product(player, attribute)
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player:set_physics_override({[attribute] = raw_value})
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end
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@ -0,0 +1,5 @@
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name = playerphysics
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description = This mod makes it possible for multiple mods to modify player physics (speed, jumping strength, gravity) without conflict.
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release = 8397
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author = Wuzzy
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title = Player Physics API
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@ -0,0 +1,121 @@
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Creative Commons Legal Code
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CC0 1.0 Universal
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CREATIVE COMMONS CORPORATION IS NOT A LAW FIRM AND DOES NOT PROVIDE
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@ -0,0 +1,17 @@
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# Sprint Mod for MineClone 2
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Forked from [sprint] by GunshipPenguin
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## Description
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Allows the player to sprint by pressing the “Use” key (default: E).
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By default, sprinting will make the player travel 80% faster and
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allow him/her to jump 10% higher.
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Licence: CC0 (see COPYING file)
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## Mod developer settings (`init.lua`)
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### `sprint.SPEED`
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How fast the player will move when sprinting as opposed to normal
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movement speed. 1.0 represents normal speed so 1.5 would mean that a
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sprinting player would travel 50% faster than a walking player and
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2.4 would mean that a sprinting player would travel 140% faster than
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a walking player.
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@ -0,0 +1,176 @@
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--[[
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Sprint mod for Minetest by GunshipPenguin
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To the extent possible under law, the author(s)
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have dedicated all copyright and related and neighboring rights
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to this software to the public domain worldwide. This software is
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distributed without any warranty.
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]]
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--Configuration variables, these are all explained in README.md
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sprint = {}
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sprint.SPEED = 1.2
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local players = {}
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-- Returns true if the player with the given name is sprinting, false if not.
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-- Returns nil if player does not exist.
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sprint.is_sprinting = function(playername)
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if players[playername] then
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return players[playername].sprinting
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else
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return nil
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end
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end
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minetest.register_on_joinplayer(function(player)
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local playerName = player:get_player_name()
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players[playerName] = {
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sprinting = false,
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timeOut = 0,
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shouldSprint = false,
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lastPos = player:get_pos(),
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sprintDistance = 0,
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fov = 1.0
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}
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end)
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minetest.register_on_leaveplayer(function(player)
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local playerName = player:get_player_name()
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players[playerName] = nil
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end)
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local function setSprinting(playerName, sprinting) --Sets the state of a player (0=stopped/moving, 1=sprinting)
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local player = minetest.get_player_by_name(playerName)
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if players[playerName] then
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players[playerName].sprinting = sprinting
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if sprinting == true then
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players[playerName].fov = math.min(players[playerName].fov + 0.05, 1.2)
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||||
player:set_fov(players[playerName].fov, true, 0.15)
|
||||
playerphysics.add_physics_factor(player, "speed", "sprint:sprint", sprint.SPEED)
|
||||
elseif sprinting == false then
|
||||
players[playerName].fov = math.max(players[playerName].fov - 0.05, 1.0)
|
||||
player:set_fov(players[playerName].fov, true, 0.15)
|
||||
playerphysics.remove_physics_factor(player, "speed", "sprint:sprint")
|
||||
end
|
||||
return true
|
||||
end
|
||||
return false
|
||||
end
|
||||
|
||||
-- Given the param2 and paramtype2 of a node, returns the tile that is facing upwards
|
||||
local function get_top_node_tile(param2, paramtype2)
|
||||
if paramtype2 == "colorwallmounted" then
|
||||
paramtype2 = "wallmounted"
|
||||
param2 = param2 % 8
|
||||
elseif paramtype2 == "colorfacedir" then
|
||||
paramtype2 = "facedir"
|
||||
param2 = param2 % 32
|
||||
end
|
||||
if paramtype2 == "wallmounted" then
|
||||
if param2 == 0 then
|
||||
return 2
|
||||
elseif param2 == 1 then
|
||||
return 1
|
||||
else
|
||||
return 5
|
||||
end
|
||||
elseif paramtype2 == "facedir" then
|
||||
if param2 >= 0 and param2 <= 3 then
|
||||
return 1
|
||||
elseif param2 == 4 or param2 == 10 or param2 == 13 or param2 == 19 then
|
||||
return 6
|
||||
elseif param2 == 5 or param2 == 11 or param2 == 14 or param2 == 16 then
|
||||
return 3
|
||||
elseif param2 == 6 or param2 == 8 or param2 == 15 or param2 == 17 then
|
||||
return 5
|
||||
elseif param2 == 7 or param2 == 9 or param2 == 12 or param2 == 18 then
|
||||
return 4
|
||||
elseif param2 >= 20 and param2 <= 23 then
|
||||
return 2
|
||||
else
|
||||
return 1
|
||||
end
|
||||
else
|
||||
return 1
|
||||
end
|
||||
end
|
||||
|
||||
minetest.register_globalstep(function(dtime)
|
||||
--Get the gametime
|
||||
local gameTime = minetest.get_gametime()
|
||||
|
||||
--Loop through all connected players
|
||||
for playerName,playerInfo in pairs(players) do
|
||||
local player = minetest.get_player_by_name(playerName)
|
||||
if player ~= nil then
|
||||
local ctrl = player:get_player_control()
|
||||
--Check if the player should be sprinting
|
||||
if ctrl.aux1 and ctrl.up and not ctrl.sneak then
|
||||
players[playerName]["shouldSprint"] = true
|
||||
else
|
||||
players[playerName]["shouldSprint"] = false
|
||||
end
|
||||
|
||||
local playerPos = player:get_pos()
|
||||
--If the player is sprinting, create particles behind and cause exhaustion
|
||||
if playerInfo["sprinting"] == true and gameTime % 0.1 == 0 then
|
||||
|
||||
-- Exhaust player for sprinting
|
||||
local lastPos = players[playerName].lastPos
|
||||
local dist = vector.distance({x=lastPos.x, y=0, z=lastPos.z}, {x=playerPos.x, y=0, z=playerPos.z})
|
||||
players[playerName].sprintDistance = players[playerName].sprintDistance + dist
|
||||
if players[playerName].sprintDistance >= 1 then
|
||||
local superficial = math.floor(players[playerName].sprintDistance)
|
||||
local full = hunger.get(minetest.get_player_by_name(playerName))
|
||||
- math.floor(superficial / 5)
|
||||
if full < 0 then full = 0 end
|
||||
hunger.set(minetest.get_player_by_name(playerName), full)
|
||||
players[playerName].sprintDistance = players[playerName].sprintDistance - superficial
|
||||
end
|
||||
|
||||
-- Sprint node particles
|
||||
local playerNode = minetest.get_node({x=playerPos["x"], y=playerPos["y"]-1, z=playerPos["z"]})
|
||||
local def = minetest.registered_nodes[playerNode.name]
|
||||
if def and def.walkable then
|
||||
minetest.add_particlespawner({
|
||||
amount = math.random(1, 2),
|
||||
time = 1,
|
||||
minpos = {x=-0.5, y=0.1, z=-0.5},
|
||||
maxpos = {x=0.5, y=0.1, z=0.5},
|
||||
minvel = {x=0, y=5, z=0},
|
||||
maxvel = {x=0, y=5, z=0},
|
||||
minacc = {x=0, y=-13, z=0},
|
||||
maxacc = {x=0, y=-13, z=0},
|
||||
minexptime = 0.1,
|
||||
maxexptime = 1,
|
||||
minsize = 0.5,
|
||||
maxsize = 1.5,
|
||||
collisiondetection = true,
|
||||
attached = player,
|
||||
vertical = false,
|
||||
node = playerNode,
|
||||
node_tile = get_top_node_tile(playerNode.param2, def.paramtype2),
|
||||
})
|
||||
end
|
||||
end
|
||||
|
||||
--Adjust player states
|
||||
players[playerName].lastPos = playerPos
|
||||
if players[playerName]["shouldSprint"] == true then --Stopped
|
||||
local sprinting
|
||||
-- Prevent sprinting if hungry
|
||||
if hunger.get(minetest.get_player_by_name(playerName)) <= 2 then
|
||||
sprinting = false
|
||||
else
|
||||
sprinting = true
|
||||
end
|
||||
setSprinting(playerName, sprinting)
|
||||
elseif players[playerName]["shouldSprint"] == false then
|
||||
setSprinting(playerName, false)
|
||||
end
|
||||
|
||||
end
|
||||
end
|
||||
end)
|
||||
|
|
@ -0,0 +1,2 @@
|
|||
name = sprint
|
||||
depends = playerphysics, hunger
|
||||
Loading…
Reference in New Issue