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https://github.com/mt-mods/plantlife_modpack.git
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Expanded the API to allow for additional biome controls.
See API.txt for details.
This commit is contained in:
Vanessa Ezekowitz
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156
API.txt
156
API.txt
@ -15,7 +15,7 @@ dbg()
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-----
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The first of these, spawn_on_surfaces() is defined with quite a large number
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of variables. All of the variables below, if specified at all, must be
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specified exactly in the order given here.
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specified exactly in the order given here. This function has no return value.
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spawn_on_surfaces = function(sdelay, splant, sradius, schance, ssurface,
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savoid, seed_diff, lightmin, lightmax, nneighbors,
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@ -24,61 +24,82 @@ spawn_on_surfaces = function(sdelay, splant, sradius, schance, ssurface,
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The first several of these are all required, and are from the last version of
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the flowers mod, so this part of the API should be the same as before.
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sdelay: The value passed to the ABM's interval parameter, usually in the
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1000-3000 range.
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splant: The node name of the item to spawn (e.g. "flowers:flower_rose").
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Note that if the plant is "poisonivy:seedling", and it's next to
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a wall at spawn time, it automatically becomes the wall-climbing
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variety. A plant will of course only be spawned if the node about
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sdelay: The value passed to the ABM's interval parameter, usually
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in the 1000-3000 range.
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splant: The node name of the item to spawn (e.g.
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"flowers:flower_rose"). Note that if the plant is
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"poisonivy:seedling", and it's next to a wall at spawn
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time, it automatically becomes the wall-climbing variety.
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A plant will of course only be spawned if the node about
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to be replaced is air.
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sradius: Don't spawn within this many nodes of the avoid items mentioned
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below.
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schance: The value passed to the ABM's chance parameter, normally in the
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10-100 range.
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ssurface: Table with the names of the nodes on which to spawn the plant in
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question, such as {"default:sand","default:dirt_with_grass"}. It
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is not recommended to put "default:dirt" or "default:stone" into
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this table if you can do without it, as this will cause the engine
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to process potentially large numbers of such nodes when deciding
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when to execute the ABM.
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savoid: Table with a list of groups and/or node names to avoid when
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spawning the plant, such as {"group:flowers","default:tree"}.
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sradius: Don't spawn within this many nodes of the avoid items
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mentioned below.
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schance: The value passed to the ABM's chance parameter, normally
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in the 10-100 range.
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ssurface: Table with the names of the nodes on which to spawn the
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plant in question, such as {"default:sand",
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"default:dirt_with_grass"}. It is not recommended to put
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"default:dirt" or "default:stone" into this table if you
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can do without it, as this will cause the engine to
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process potentially large numbers of such nodes when
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deciding when to execute the ABM and where it should
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operate.
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savoid: Table with a list of groups and/or node names to avoid
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when spawning the plant, such as {"group:flowers",
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"default:tree"}.
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From here down are several optional parameters. You can use as many as you
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need, but you must specify them in order (so if you want lightmax, you need
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lightmin and seed_diff also, but not the rest).
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seed_diff: The perlin seed difference value passed to the
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minetest.env:get_perlin() function. Used along with the global
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perlin controls below to create the "biome" in which the plants
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will spawn. Usually a value of somewhere in the 10 to 100 range
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is good. Defaults to 0 if not provided
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lightmin: Minimum amount of light necessary to make a plant spawn. Defaults
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to 0.
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minetest.env:get_perlin() function. Used along with the
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global perlin controls below to create the "biome" in
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which the plants will spawn. Usually a value of somewhere
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in the 10 to 100 range is good. Defaults to 0 if not
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provided.
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lightmin: Minimum amount of light necessary to make a plant spawn.
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Defaults to 0.
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lightmax: Maximum amount of light present to allow a plant to spawn.
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Defaults to the engine's MAX_LIGHT value of 14.
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nneighbors: Table with a list of neighboring nodes, passed to the ABM as the
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"neighbors" parameter, indicating what needs to be next to the
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node the plant is about to spawn on, such as
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{"default:stone","default:water_source"}. Defaults to the value
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of ssurface if not provided.
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ocount: There must be at least this many of the above neighbors around the
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node the plant is about to spawn on for it to happen. Defaults to
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nneighbors: Table with a list of neighboring nodes, passed to the ABM
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as the "neighbors" parameter, indicating what needs to be
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next to the node the plant is about to spawn on, such as
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{"default:stone","default:water_source"}. Defaults to the
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value of ssurface if not provided.
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ocount: There must be at least this many of the above neighbors in
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the eight spaces immediately surrounding the node the
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plant is about to spawn on for it to happen. Defaults to
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0.
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facedir: The value passed to the param2 variable when adding the plant node
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to the map. Defaults to 0.
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depthmax: If a node spawns on top of a water source, the water must be at
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most this deep. Defaults to 1 node.
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facedir: The value passed to the param2 variable when adding the
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plant node to the map. Defaults to 0.
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depthmax: If a node spawns on top of a water source, the water must
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be at most this deep. Defaults to 1 node.
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altitudemin: Items must be at this altitude or higher to spawn at all.
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Defaults to -31000.
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altitudemax: But no higher than this altitude. Defaults to +31000.
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sbiome: List of nodes that must be somewhere in the vicinity in
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order for the plant to spawn. Typically this would be
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something like "default:water_source" or "default:sand".
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Defaults to the value of ssurface if not provided.
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sbiomesize: How large of an area to check for the above node.
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Specifically, this checks a cuboid area centered on the
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node to be spawned on, 3 tall and this wide/long.
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Defaults to 0.
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sbiomecount: How many of the above nodes must be within that radius.
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Defaults to 1.
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By default, if a biome node, size, and count are not defined, the biome
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checking is disabled. Same holds true for the nneighbors bit above that.
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-----
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The second function, grow_plants() is defined like so:
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The second function, grow_plants() is used to turn the spawned nodes above
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into something else over time. This function has no return value, and is
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defined like so:
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grow_plants = function(gdelay, gchance, gplant, gresult, dry_early_node,
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grow_nodes, facedir, need_wall, grow_vertically, height_limit,
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ground_nodes)
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ground_nodes, grow_function)
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gdelay: Passed as the ABM "interval" parameter, as with spawning.
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gchance: Passed as the ABM "chance" parameter.
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@ -87,40 +108,55 @@ gplant: Name of the node being grown. This value is passed as the
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parameter, so it is the plants themselves that are the ABM
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trigger, rather than the ground they spawned on. A plant
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will only grow if the node above it is air.
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gresult: Name of the node into which the above should transform when
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the ABM executes.
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gresult: Name of the node into which the above should transform
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when the ABM executes.
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dry_early_node: This value is ignored except for jungle grass, where it
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indicates which node the grass must be on in order for it to
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turn from "short" to default:dry_shrub.
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grow_nodes: This node must be under the plant in order for it to grow at
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all. Normally this should be the same as the list of
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indicates which node the grass must be on in order for it
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to turn from "short" to default:dry_shrub.
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grow_nodes: This node must be under the plant in order for it to grow
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at all. Normally this should be the same as the list of
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surfaces passed to the spawning ABM as the "nodenames"
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parameter, such as
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{"default:dirt_with_grass","default:sand"}. This is so that
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the plant can be manually placed on something like a flower
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pot or something without it growing and eventually dieing.
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parameter, such as {"default:dirt_with_grass",
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"default:sand"}. This is so that the plant can be
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manually placed on something like a flower pot or
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something without it growing and eventually dieing.
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facedir: Same as with spawning a plant. If supplied, this value is
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passed to the param2 variable when changing the plant. If nil
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or left out, no new param2 value is applied.
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passed to the param2 variable when changing the plant. If
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nil or left out, no new param2 value is applied.
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need_wall: Set this to true if you the plant needs to grow against a
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wall. Defaults to false.
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grow_vertically: Set this to true if the plant needs to grow vertically, as in
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climbing poison ivy. Defaults to false.
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grow_vertically: Set this to true if the plant needs to grow vertically, as
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in climbing poison ivy. Defaults to false.
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height_limit: Just how tall can a vertically-growing plant go? Set this
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accordingly. The mod will search straight down from the
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position being spawned at to find a ground node, below.
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Defaults to 62000 (unlimited).
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ground_nodes: What nodes should be treated as "the ground" below a
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vertically-growing plant. Usually this will be the same as
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the grow_nodes table, but might also include, for example,
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water or some other surrounding material. Defaults to
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"default:dirt_with_grass".
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vertically-growing plant. Usually this will be the same
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as the grow_nodes table, but might also include, for
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example, water or some other surrounding material.
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Defaults to "default:dirt_with_grass".
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grow_function: Execute the named function (which must be supplied as just
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the name of the function as a string) when growing this
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node, rather than using the method provided by the default
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growing code. Note that if this is specified, only the
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gdelay, gchance, and gplant variables will be used, the
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rest will be ignored by the growing ABM. You can still
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read them from within the function if you need to. The
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function will be passed two parameters in order: The
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position of the node to be "grown" (in the usual table
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format), and the Perlin noise value at the location in
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question.
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seed_diff: The perlin seed diff to be use to calculate the noise
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value given to the above grow_function. Should be the
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same as the seed diff used when first spawning the plant
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that's being grown.
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-----
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plant_valid_wall() expects only a single parameter, "pos", which is a table
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indicating the X,Y,Z coordinates to search for nearby adjacent walls. This
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function returns the location of the first wall found as a facedir value, or
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nil if there are no adjacent walls.
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plant_valid_wall() expects only a single parameter, "pos", which is the usual
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table indicating the coordinates around which to search for adjacent walls.
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This function returns the location of the first wall found as a facedir value,
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or nil if there are no adjacent walls.
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-----
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is_node_loaded() is defined in exactly the same manner (that is, "node_pos" is
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@ -1,20 +1,13 @@
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-- Plantlife mod by Vanessa Ezekowitz
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-- 2012-11-29
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-- Plantlife library mod by Vanessa Ezekowitz
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-- 2013-01-00
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--
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-- This mod combines all of the functionality from poison ivy,
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-- flowers, and jungle grass. If you have any of these, you no
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-- longer need them.
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--
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-- License:
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-- CC-BY-SA for most textures, except flowers
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-- WTFPL for the flowers textures
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-- WTFPL for all code and everything else
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-- License: WTFPL
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-- Various settings - most of these probably won't need to be changed
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plantlife_seed_diff = 329 -- needs to be global so other mods can see it
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local plantlife_debug = false -- ...unless you want the modpack to spam the console ;-)
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local plantlife_debug = true -- ...unless you want the modpack to spam the console ;-)
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local perlin_octaves = 3
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local perlin_persistence = 0.6
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@ -42,15 +35,18 @@ end
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-- The spawning ABM
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spawn_on_surfaces = function(sdelay, splant, sradius, schance, ssurface, savoid, seed_diff, lightmin, lightmax, nneighbors, ocount, facedir, depthmax, altmin, altmax)
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spawn_on_surfaces = function(sdelay, splant, sradius, schance, ssurface, savoid, seed_diff, lightmin, lightmax, nneighbors, ocount, facedir, depthmax, altmin, altmax, sbiome, sbiomesize, sbiomecount)
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if seed_diff == nil then seed_diff = 0 end
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if lightmin == nil then lightmin = 0 end
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if lightmax == nil then lightmax = LIGHT_MAX end
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if nneighbors == nil then nneighbors = ssurface end
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if ocount == nil then ocount = 0 end
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if ocount == nil then ocount = -1 end
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if depthmax == nil then depthmax = 1 end
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if altmin == nil then altmin = -31000 end
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if altmax == nil then altmax = 31000 end
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if sbiome == nil then sbiome = "" end
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if sbiomesize == nil then sbiomesize = 0 end
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if sbiomecount == nil then sbiomecount = 1 end
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minetest.register_abm({
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nodenames = { ssurface },
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interval = sdelay,
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@ -66,7 +62,12 @@ spawn_on_surfaces = function(sdelay, splant, sradius, schance, ssurface, savoid,
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if minetest.env:find_node_near(p_top, sradius + math.random(-1.5,2), savoid) == nil
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and n_light >= lightmin
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and n_light <= lightmax
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and table.getn(minetest.env:find_nodes_in_area({x=pos.x-1, y=pos.y, z=pos.z-1}, {x=pos.x+1, y=pos.y, z=pos.z+1}, nneighbors)) > ocount
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and
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(table.getn(minetest.env:find_nodes_in_area({x=pos.x-1, y=pos.y, z=pos.z-1}, {x=pos.x+1, y=pos.y, z=pos.z+1}, nneighbors)) > ocount
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or ocount == -1)
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and
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(table.getn(minetest.env:find_nodes_in_area({x=pos.x-sbiomesize, y=pos.y-1, z=pos.z-sbiomesize}, {x=pos.x+sbiomesize, y=pos.y+1, z=pos.z+sbiomesize}, sbiome)) >= sbiomecount
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or sbiome == "")
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and pos.y >= altmin
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and pos.y <= altmax
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then
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@ -91,7 +92,7 @@ end
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-- The growing ABM
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grow_plants = function(gdelay, gchance, gplant, gresult, dry_early_node, grow_nodes, facedir, need_wall, grow_vertically, height_limit, ground_nodes)
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grow_plants = function(gdelay, gchance, gplant, gresult, dry_early_node, grow_nodes, facedir, need_wall, grow_vertically, height_limit, ground_nodes, grow_function, seed_diff)
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if need_wall ~= true then need_wall = false end
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if grow_vertically ~= true then grow_vertically = false end
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if height_limit == nil then height_limit = 62000 end
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@ -106,7 +107,7 @@ grow_plants = function(gdelay, gchance, gplant, gresult, dry_early_node, grow_no
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local n_top = minetest.env:get_node(p_top)
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local n_bot = minetest.env:get_node(p_bot)
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local groundnode = minetest.env:get_node({x=pos.x, y=pos.y-height_limit, z=pos.z})
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if grow_function == nil then
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if string.find(dump(grow_nodes), n_bot.name) ~= nil and n_top.name == "air" then
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if grow_vertically then
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if find_first_node(pos, height_limit, ground_nodes) ~= nil then
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@ -140,6 +141,13 @@ grow_plants = function(gdelay, gchance, gplant, gresult, dry_early_node, grow_no
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end
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end
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end
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else
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if seed_diff == nil then seed_diff = 0 end
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local perlin = minetest.env:get_perlin(seed_diff, perlin_octaves, perlin_persistence, perlin_scale )
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local noise = perlin:get2d({x=pos.x, y=pos.z})
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dbg("Want to execute "..grow_function.."("..dump(pos)..","..noise..")")
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assert(loadstring(grow_function.."("..dump(pos)..","..noise..")"))()
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end
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end
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})
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end
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