forked from VoxeLibre/VoxeLibre
685 lines
28 KiB
Plaintext
685 lines
28 KiB
Plaintext
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Mobs Redo API (last updated 18th Oct 2017)
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==========================================
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Welcome to the world of mobs in minetest and hopefully an easy guide to defining
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your own mobs and having them appear in your worlds.
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Registering Mobs
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----------------
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To register a mob and have it ready for use requires the following function:
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mobs:register_mob(name, definition)
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The 'name' of a mob usually starts with the mod name it's running from followed
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by it's own name e.g.
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"mobs_monster:sand_monster" or "mymod:totally_awesome_beast"
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... and the 'definition' is a table which holds all of the settings and
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functions needed for the mob to work properly which contains the following:
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'nametag' contains the name which is shown above mob.
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'type' holds the type of mob that inhabits your world e.g.
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"animal" usually docile and walking around.
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"monster" attacks player or npc on sight.
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"npc" walk around and will defend themselves if hit first, they
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kill monsters.
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'hp_min' has the minimum health value the mob can spawn with.
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'hp_max' has the maximum health value the mob can spawn with.
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'armor' holds strength of mob, 100 is normal, lower is more powerful
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and needs more hits and better weapons to kill.
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'passive' when true allows animals to defend themselves when hit,
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otherwise they amble onwards.
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'walk_velocity' is the speed that your mob can walk around.
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'run_velocity' is the speed your mob can run with, usually when attacking.
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'walk_chance' has a 0-100 chance value your mob will walk from standing,
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set to 0 for jumping mobs only.
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'jump' when true allows your mob to jump updwards.
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'jump_height' holds the height your mob can jump, 0 to disable jumping.
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'step_height' height of a block that your mob can easily walk up onto.
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'fly' when true allows your mob to fly around instead of walking.
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'fly_in' holds the node name that the mob flies (or swims) around
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in e.g. "air" or "default:water_source".
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'runaway' if true causes animals to turn and run away when hit.
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'view_range' how many nodes in distance the mob can see a player.
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'reach' how many nodes in distance a mob can attack a player while
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standing.
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'damage' how many health points the mob does to a player or another
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mob when melee attacking.
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'knockback' when true has mobs falling backwards when hit, the greater
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the damage the more they move back.
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'fear_height' is how high a cliff or edge has to be before the mob stops
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walking, 0 to turn off height fear.
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'fall_speed' has the maximum speed the mob can fall at, default is -10.
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'fall_damage' when true causes falling to inflict damage.
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'water_damage' holds the damage per second infliced to mobs when standing in
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water.
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'lava_damage' holds the damage per second inflicted to mobs when standing
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in lava or fire.
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'light_damage' holds the damage per second inflicted to mobs when it's too
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bright (above 13 light).
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'suffocation' when true causes mobs to suffocate inside solid blocks.
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'floats' when set to 1 mob will float in water, 0 has them sink.
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'follow' mobs follow player when holding any of the items which appear
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on this table, the same items can be fed to a mob to tame or
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breed e.g. {"farming:wheat", "default:apple"}
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'reach' is how far the mob can attack player when standing
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nearby, default is 3 nodes.
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'docile_by_day' when true has mobs wandering around during daylight
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hours and only attacking player at night or when
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provoked.
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'attacks_monsters' when true has npc's attacking monsters or not.
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'attack_animal' when true will have monsters attacking animals.
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'owner_loyal' when true will have tamed mobs attack anything player
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punches when nearby.
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'group_attack' when true has same mob type grouping together to attack
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offender.
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'attack_type' tells the api what a mob does when attacking the player
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or another mob:
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'dogfight' is a melee attack when player is within mob reach.
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'shoot' has mob shoot pre-defined arrows at player when inside
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view_range.
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'dogshoot' has melee attack when inside reach and shoot attack
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when inside view_range.
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'explode' causes mob to explode when inside reach.
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'explosion_radius' has the radius of the explosion which defaults to 1.
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'explosion_timer' number of seconds before mob explodes while still
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inside view range.
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'arrow' holds the pre-defined arrow object to shoot when
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attacking.
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'dogshoot_switch' allows switching between attack types by using timers
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(1 for shoot, 2 for dogfight)
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'dogshoot_count_max' contains how many seconds before switching from
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dogfight to shoot.
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'dogshoot_count_max2' contains how many seconds before switching from shoot
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to dogfight.
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'shoot_interval' has the number of seconds between shots.
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'shoot_offset' holds the y position added as to where the
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arrow/fireball appears on mob.
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'specific_attack' has a table of entity names that mob can also attack
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e.g. {"player", "mobs_animal:chicken"}.
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'blood_amount' contains the number of blood droplets to appear when
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mob is hit.
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'blood_texture' has the texture name to use for droplets e.g.
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"mobs_blood.png".
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'pathfinding' set to 1 for mobs to use pathfinder feature to locate
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player, set to 2 so they can build/break also (only
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works with dogfight attack).
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'immune_to' is a table that holds specific damage when being hit by
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certain items e.g.
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{"default:sword_wood", 0} -- causes no damage.
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{"default:gold_lump", -10} -- heals by 10 health points.
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{"default:coal_block", 20} -- 20 damage when hit on head with coal blocks.
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'makes_footstep_sound' when true you can hear mobs walking.
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'sounds' this is a table with sounds of the mob
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'distance' maximum distance sounds can be heard, default is 10.
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'random' random sound that plays during gameplay.
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'war_cry' what you hear when mob starts to attack player.
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'attack' what you hear when being attacked.
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'shoot_attack' sound played when mob shoots.
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'damage' sound heard when mob is hurt.
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'death' played when mob is killed.
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'jump' played when mob jumps.
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'explode' sound played when mob explodes.
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'drops' table of items that are dropped when mob is killed, fields are:
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'name' name of item to drop.
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'chance' chance of drop, 1 for always, 2 for 1-in-2 chance etc.
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'min' minimum number of items dropped.
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'max' maximum number of items dropped.
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'visual' holds the look of the mob you wish to create:
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'cube' looks like a normal node
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'sprite' sprite which looks same from all angles.
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'upright_sprite' flat model standing upright.
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'wielditem' how it looks when player holds it in hand.
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'mesh' uses separate object file to define mob.
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'visual_size' has the size of the mob, defaults to {x = 1, y = 1}
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'collision_box' has the box in which mob can be interacted with e.g.
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{-0.5, -0.5, -0.5, 0.5, 0.5, 0.5}
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'textures' holds a table list of textures to be used for mob, or you
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could use multiple lists inside another table for random
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selection e.g. { {"texture1.png"}, {"texture2.png"} }
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'child_texture' holds the texture table for when baby mobs are used.
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'gotten_texture' holds the texture table for when self.gotten value is
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true, used for milking cows or shearing sheep.
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'mesh' holds the name of the external object used for mob model
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e.g. "mobs_cow.b3d"
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'gotten_mesh" holds the name of the external object used for when
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self.gotten is true for mobs.
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'rotate' custom model rotation, 0 = front, 90 = side, 180 = back,
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270 = other side.
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'double_melee_attack' when true has the api choose between 'punch' and
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'punch2' animations.
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'animation' holds a table containing animation names and settings for use with mesh models:
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'stand_start' start frame for when mob stands still.
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'stand_end' end frame of stand animation.
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'stand_speed' speed of animation in frames per second.
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'walk_start' when mob is walking around.
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'walk_end'
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'walk_speed'
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'run_start' when a mob runs or attacks.
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'run_end'
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'run_speed'
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'fly_start' when a mob is flying.
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'fly_end'
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'fly_speed'
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'punch_start' when a mob melee attacks.
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'punch_end'
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'punch_speed'
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'punch2_start' alternative melee attack animation.
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'punch2_end'
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'punch2_speed'
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'shoot_start' shooting animation.
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'shoot_end'
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'shoot_speed'
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'die_start' death animation
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'die_end'
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'die_speed'
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'die_loop' when set to false stops the animation looping.
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Using '_loop = false' setting will stop any of the above animations from
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looping.
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'speed_normal' is used for animation speed for compatibility with some
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older mobs.
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Node Replacement
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----------------
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Mobs can look around for specific nodes as they walk and replace them to mimic
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eating.
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'replace_what' group of items to replace e.g.
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{"farming:wheat_8", "farming:carrot_8"}
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or you can use the specific options of what, with and
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y offset by using this instead:
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{
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{"group:grass", "air", 0},
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{"default:dirt_with_grass", "default:dirt", -1}
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}
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'replace_with' replace with what e.g. "air" or in chickens case "mobs:egg"
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'replace_rate' how random should the replace rate be (typically 10)
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'replace_offset' +/- value to check specific node to replace
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'on_replace(self, pos, oldnode, newnode)' is called when mob is about to
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replace a node.
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'self' ObjectRef of mob
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'pos' Position of node to replace
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'oldnode' Current node
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'newnode' What the node will become after replacing
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If false is returned, the mob will not replace the node.
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By default, replacing sets self.gotten to true and resets the object
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properties.
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Custom Definition Functions
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---------------------------
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Along with the above mob registry settings we can also use custom functions to
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enhance mob functionality and have them do many interesting things:
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'on_die' a function that is called when the mob is killed the
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parameters are (self, pos)
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'on_rightclick' its same as in minetest.register_entity()
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'on_blast' is called when an explosion happens near mob when using TNT
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functions, parameters are (object, damage) and returns
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(do_damage, do_knockback, drops)
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'on_spawn' is a custom function that runs on mob spawn with 'self' as
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variable, return true at end of function to run only once.
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'after_activate' is a custom function that runs once mob has been activated
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with these paramaters (self, staticdata, def, dtime)
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'on_breed' called when two similar mobs breed, paramaters are
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(parent1, parent2) objects, return false to stop child from
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being resized and owner/tamed flags and child textures being
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applied. Function itself must spawn new child mob.
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'on_grown' is called when a child mob has grown up, only paramater is
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(self).
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'do_punch' called when mob is punched with paramaters (self, hitter,
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time_from_last_punch, tool_capabilities, direction), return
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false to stop punch damage and knockback from taking place.
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'custom_attack' when set this function is called instead of the normal mob
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melee attack, parameters are (self, to_attack).
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'on_die' a function that is called when mob is killed
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'do_custom' a custom function that is called every tick while mob is
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active and which has access to all of the self.* variables
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e.g. (self.health for health or self.standing_in for node
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status), return with 'false' to skip remainder of mob API.
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Internal Variables
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------------------
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The mob api also has some preset variables and functions that it will remember
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for each mob.
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'self.health' contains current health of mob (cannot exceed
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self.hp_max)
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'self.texture_list' contains list of all mob textures
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'self.child_texture' contains mob child texture when growing up
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'self.base_texture' contains current skin texture which was randomly
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selected from textures list
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'self.gotten' this is used for obtaining milk from cow and wool from
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sheep
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'self.horny' when animal fed enough it is set to true and animal can
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breed with same animal
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'self.hornytimer' background timer that controls breeding functions and
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mob childhood timings
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'self.child' used for when breeding animals have child, will use
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child_texture and be half size
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'self.owner' string used to set owner of npc mobs, typically used for
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dogs
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'self.order' set to "follow" or "stand" so that npc will follow owner
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or stand it's ground
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'self.nametag' contains the name of the mob which it can show above
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Spawning Mobs in World
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----------------------
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mobs:register_spawn(name, nodes, max_light, min_light, chance,
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active_object_count, max_height, day_toggle)
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mobs:spawn_specfic(name, nodes, neighbors, min_light, max_light, interval,
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chance, active_object_count, min_height, max_height, day_toggle, on_spawn)
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These functions register a spawn algorithm for the mob. Without this function
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the call the mobs won't spawn.
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'name' is the name of the animal/monster
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'nodes' is a list of nodenames on that the animal/monster can
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spawn on top of
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'neighbors' is a list of nodenames on that the animal/monster will
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spawn beside (default is {"air"} for
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mobs:register_spawn)
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'max_light' is the maximum of light
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'min_light' is the minimum of light
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'interval' is same as in register_abm() (default is 30 for
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mobs:register_spawn)
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'chance' is same as in register_abm()
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'active_object_count' number of this type of mob to spawn at one time inside
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map area
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'min_height' is the minimum height the mob can spawn
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'max_height' is the maximum height the mob can spawn
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'day_toggle' true for day spawning, false for night or nil for
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anytime
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'on_spawn' is a custom function which runs after mob has spawned
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and gives self and pos values.
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A simpler way to handle mob spawns has been added with the mobs:spawn(def)
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command which uses above names to make settings clearer:
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mobs:spawn({name = "mobs_monster:tree_monster",
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nodes = {"group:leaves"},
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max_light = 7,
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})
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For each mob that spawns with this function is a field in mobs.spawning_mobs.
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It tells if the mob should spawn or not. Default is true. So other mods can
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only use the API of this mod by disabling the spawning of the default mobs in
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this mod.
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Making Arrows
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-------------
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mobs:register_arrow(name, definition)
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This function registers a arrow for mobs with the attack type shoot.
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'name' is the name of the arrow
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'definition' is a table with the following values:
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'visual' same is in minetest.register_entity()
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'visual_size' same is in minetest.register_entity()
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'textures' same is in minetest.register_entity()
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'velocity' the velocity of the arrow
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'drop' if set to true any arrows hitting a node will drop as item
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'hit_player' a function that is called when the arrow hits a player;
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this function should hurt the player, the parameters are
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(self, player)
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'hit_mob' a function that is called when the arrow hits a mob;
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this function should hurt the mob, the parameters are
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(self, player)
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'hit_node' a function that is called when the arrow hits a node, the
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parameters are (self, pos, node)
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'tail' when set to 1 adds a trail or tail to mob arrows
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'tail_texture' texture string used for above effect
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'tail_size' has size for above texture (defaults to between 5 and 10)
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'expire' contains float value for how long tail appears for
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(defaults to 0.25)
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'glow' has value for how brightly tail glows 1 to 10 (default is
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0 for no glow)
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'rotate' integer value in degrees to rotate arrow
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'on_step' is a custom function when arrow is active, nil for
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default.
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Spawn Eggs
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----------
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mobs:register_egg(name, description, background, addegg, no_creative)
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This function registers a spawn egg which can be used by admin to properly spawn in a mob.
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'name' this is the name of your new mob to spawn e.g. "mob:sheep"
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'description' the name of the new egg you are creating e.g. "Spawn Sheep"
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'background' the texture displayed for the egg in inventory
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'addegg' would you like an egg image in front of your texture (1 = yes,
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0 = no)
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'no_creative' when set to true this stops spawn egg appearing in creative
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mode for destructive mobs like Dungeon Masters.
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Explosion Function
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------------------
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mobs:explosion(pos, radius) -- DEPRECATED!!! use mobs:boom() instead
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mobs:boom(self, pos, radius)
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'self' mob entity
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'pos' centre position of explosion
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'radius' radius of explosion (typically set to 3)
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This function generates an explosion which removes nodes in a specific radius
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and damages any entity caught inside the blast radius. Protection will limit
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node destruction but not entity damage.
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Capturing Mobs
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--------------
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mobs:capture_mob(self, clicker, chance_hand, chance_net, chance_lasso,
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force_take, replacewith)
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This function is generally called inside the on_rightclick section of the mob
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api code, it provides a chance of capturing the mob by hand, using the net or
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lasso items, and can also have the player take the mob by force if tamed and
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replace with another item entirely.
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'self' mob information
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'clicker' player information
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'chance_hand' chance of capturing mob by hand (1 to 100) 0 to disable
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'chance_net' chance of capturing mob using net (1 to 100) 0 to disable
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'chance_lasso' chance of capturing mob using magic lasso (1 to 100) 0 to
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disable
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'force_take' take mob by force, even if tamed (true or false)
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'replacewith' once captured replace mob with this item instead (overrides
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new mob eggs with saved information)
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Feeding and Taming/Breeding
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---------------------------
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mobs:feed_tame(self, clicker, feed_count, breed, tame)
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This function allows the mob to be fed the item inside self.follow be it apple,
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wheat or whatever a set number of times and be tamed or bred as a result.
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Will return true when mob is fed with item it likes.
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'self' mob information
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'clicker' player information
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'feed_count' number of times mob must be fed to tame or breed
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'breed' true or false stating if mob can be bred and a child created
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afterwards
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'tame' true or false stating if mob can be tamed so player can pick
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them up
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Protecting Mobs
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---------------
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mobs:protect(self, clicker)
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This function can be used to right-click any tamed mob with mobs:protector item,
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this will protect the mob from harm inside of a protected area from other
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players. Will return true when mob right-clicked with mobs:protector item.
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'self' mob information
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'clicker' player information
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Riding Mobs
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-----------
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Mobs can now be ridden by players and the following shows its functions and
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usage:
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mobs:attach(self, player)
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This function attaches a player to the mob so it can be ridden.
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'self' mob information
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'player' player information
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mobs:detach(player, offset)
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|
This function will detach the player currently riding a mob to an offset
|
|
position.
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|
|
'player' player information
|
|
'offset' position table containing offset values
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|
|
|
|
|
mobs:drive(self, move_animation, stand_animation, can_fly, dtime)
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|
|
|
This function allows an attached player to move the mob around and animate it at
|
|
same time.
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|
|
|
'self' mob information
|
|
'move_animation' string containing movement animation e.g. "walk"
|
|
'stand_animation' string containing standing animation e.g. "stand"
|
|
'can_fly' if true then jump and sneak controls will allow mob to fly
|
|
up and down
|
|
'dtime' tick time used inside drive function
|
|
|
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|
|
mobs:fly(self, dtime, speed, can_shoot, arrow_entity, move_animation, stand_animation)
|
|
|
|
This function allows an attached player to fly the mob around using directional
|
|
controls.
|
|
|
|
'self' mob information
|
|
'dtime' tick time used inside fly function
|
|
'speed' speed of flight
|
|
'can_shoot' true if mob can fire arrow (sneak and left mouse button
|
|
fires)
|
|
'arrow_entity' name of arrow entity used for firing
|
|
'move_animation' string containing name of pre-defined animation e.g. "walk"
|
|
or "fly" etc.
|
|
'stand_animation' string containing name of pre-defined animation e.g.
|
|
"stand" or "blink" etc.
|
|
|
|
Note: animation names above are from the pre-defined animation lists inside mob
|
|
registry without extensions.
|
|
|
|
|
|
mobs:set_animation(self, name)
|
|
|
|
This function sets the current animation for mob, defaulting to "stand" if not
|
|
found.
|
|
|
|
'self' mob information
|
|
'name' name of animation
|
|
|
|
|
|
Certain variables need to be set before using the above functions:
|
|
|
|
'self.v2' toggle switch used to define below values for the
|
|
first time
|
|
'self.max_speed_forward' max speed mob can move forward
|
|
'self.max_speed_reverse' max speed mob can move backwards
|
|
'self.accel' acceleration speed
|
|
'self.terrain_type' integer containing terrain mob can walk on
|
|
(1 = water, 2 or 3 = land)
|
|
'self.driver_attach_at' position offset for attaching player to mob
|
|
'self.driver_eye_offset' position offset for attached player view
|
|
'self.driver_scale' sets driver scale for mobs larger than {x=1, y=1}
|
|
|
|
|
|
External Settings for "minetest.conf"
|
|
------------------------------------
|
|
|
|
'enable_damage' if true monsters will attack players (default is true)
|
|
'only_peaceful_mobs' if true only animals will spawn in game (default is
|
|
false)
|
|
'mobs_disable_blood' if false blood effects appear when mob is hit (default
|
|
is false)
|
|
'mobs_spawn_protected' if set to false then mobs will not spawn in protected
|
|
areas (default is true)
|
|
'remove_far_mobs' if true then mobs that are outside players visual
|
|
range will be removed (default is false)
|
|
'mobname' can change specific mob chance rate (0 to disable) and
|
|
spawn number e.g. mobs_animal:cow = 1000,5
|
|
'mob_difficulty' sets difficulty level (health and hit damage
|
|
multiplied by this number), defaults to 1.0.
|
|
'mob_show_health' if false then punching mob will not show health status
|
|
(true by default)
|
|
|
|
Players can override the spawn chance for each mob registered by adding a line
|
|
to their minetest.conf file with a new value, the lower the value the more each
|
|
mob will spawn e.g.
|
|
|
|
mobs_animal:sheep_chance 11000
|
|
mobs_monster:sand_monster_chance 100
|
|
|
|
|
|
Rideable Horse Example Mob
|
|
--------------------------
|
|
|
|
mobs:register_mob("mob_horse:horse", {
|
|
type = "animal",
|
|
visual = "mesh",
|
|
visual_size = {x = 1.20, y = 1.20},
|
|
mesh = "mobs_horse.x",
|
|
collisionbox = {-0.4, -0.01, -0.4, 0.4, 1.25, 0.4},
|
|
animation = {
|
|
speed_normal = 15,
|
|
speed_run = 30,
|
|
stand_start = 25,
|
|
stand_end = 75,
|
|
walk_start = 75,
|
|
walk_end = 100,
|
|
run_start = 75,
|
|
run_end = 100,
|
|
},
|
|
textures = {
|
|
{"mobs_horse.png"},
|
|
{"mobs_horsepeg.png"},
|
|
{"mobs_horseara.png"}
|
|
},
|
|
fear_height = 3,
|
|
runaway = true,
|
|
fly = false,
|
|
walk_chance = 60,
|
|
view_range = 5,
|
|
follow = {"farming:wheat"},
|
|
passive = true,
|
|
hp_min = 12,
|
|
hp_max = 16,
|
|
armor = 200,
|
|
lava_damage = 5,
|
|
fall_damage = 5,
|
|
water_damage = 1,
|
|
makes_footstep_sound = true,
|
|
drops = {
|
|
{name = "mobs:meat_raw", chance = 1, min = 2, max = 3}
|
|
},
|
|
sounds = {
|
|
random = "horse_neigh.ogg",
|
|
damage = "horse_whinney.ogg",
|
|
},
|
|
|
|
do_custom = function(self, dtime)
|
|
|
|
-- set needed values if not already present
|
|
if not self.v2 then
|
|
self.v2 = 0
|
|
self.max_speed_forward = 6
|
|
self.max_speed_reverse = 2
|
|
self.accel = 6
|
|
self.terrain_type = 3
|
|
self.driver_attach_at = {x = 0, y = 20, z = -2}
|
|
self.driver_eye_offset = {x = 0, y = 3, z = 0}
|
|
self.driver_scale = {x = 1, y = 1}
|
|
end
|
|
|
|
-- if driver present allow control of horse
|
|
if self.driver then
|
|
|
|
mobs.drive(self, "walk", "stand", false, dtime)
|
|
|
|
return false -- skip rest of mob functions
|
|
end
|
|
|
|
return true
|
|
end,
|
|
|
|
on_die = function(self, pos)
|
|
|
|
-- drop saddle when horse is killed while riding
|
|
-- also detach from horse properly
|
|
if self.driver then
|
|
minetest.add_item(pos, "mobs:saddle")
|
|
mobs.detach(self.driver, {x = 1, y = 0, z = 1})
|
|
end
|
|
|
|
end,
|
|
|
|
on_rightclick = function(self, clicker)
|
|
|
|
-- make sure player is clicking
|
|
if not clicker or not clicker:is_player() then
|
|
return
|
|
end
|
|
|
|
-- feed, tame or heal horse
|
|
if mobs:feed_tame(self, clicker, 10, true, true) then
|
|
return
|
|
end
|
|
|
|
-- make sure tamed horse is being clicked by owner only
|
|
if self.tamed and self.owner == clicker:get_player_name() then
|
|
|
|
local inv = clicker:get_inventory()
|
|
|
|
-- detatch player already riding horse
|
|
if self.driver and clicker == self.driver then
|
|
|
|
mobs.detach(clicker, {x = 1, y = 0, z = 1})
|
|
|
|
-- add saddle back to inventory
|
|
if inv:room_for_item("main", "mobs:saddle") then
|
|
inv:add_item("main", "mobs:saddle")
|
|
else
|
|
minetest.add_item(clicker.getpos(), "mobs:saddle")
|
|
end
|
|
|
|
-- attach player to horse
|
|
elseif not self.driver
|
|
and clicker:get_wielded_item():get_name() == "mobs:saddle" then
|
|
|
|
self.object:set_properties({stepheight = 1.1})
|
|
mobs.attach(self, clicker)
|
|
|
|
-- take saddle from inventory
|
|
inv:remove_item("main", "mobs:saddle")
|
|
end
|
|
end
|
|
|
|
-- used to capture horse with magic lasso
|
|
mobs:capture_mob(self, clicker, 0, 0, 80, false, nil)
|
|
end
|
|
})
|