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Implement first prototype of pathfinding

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This commit is contained in:
oilboi 2020-05-22 23:43:13 -04:00
parent b67397aa8d
commit 07b2f4db1c
4 changed files with 93 additions and 30 deletions
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7
mods/mob/api/api_hook.lua
View File

@ -127,7 +127,8 @@ mob_register.mob = true
mob_register.collision_boundary = def.collision_boundary or 1
if def.pathfinds then
mob_register.path = {}
--mob_register.path = {}
mob_register.pathfinding_timer = 0
end
mobs.create_movement_functions(def,mob_register)
@ -159,6 +160,10 @@ mob_register.on_step = function(self, dtime,moveresult)
self.look_around(self,dtime)
end
if self.pathfinding then
self.pathfinding(self,dtime)
end
if self.handle_friendly_in_daylight_timer then
self.handle_friendly_in_daylight_timer(self,dtime)
end

11
mods/mob/api/interaction.lua
View File

@ -262,7 +262,8 @@ mobs.create_interaction_functions = function(def,mob_register)
--print(self.hostile)
if self.hostile == true then
local distance = vector.distance(pos,pos2)
self.following_pos = vector.new(pos.x,pos.y-1.625,pos.z)
self.following_pos = vector.new(pos2.x,pos2.y-1.625,pos2.z)
--punch the player
if self.attack_type == "punch" then
if distance < 2.5 and self.punch_timer <= 0 and object:get_hp() > 0 then
@ -304,7 +305,13 @@ mobs.create_interaction_functions = function(def,mob_register)
end
end
end
self.direction = vector.direction(vector.new(pos.x,0,pos.z),vector.new(pos2.x,0,pos2.z))
--smart
if self.path_data and table.getn(self.path_data) > 0 then
self.direction = vector.direction(vector.new(pos.x,0,pos.z), vector.new(self.path_data[1].x,0,self.path_data[1].z))
--dumb
else
self.direction = vector.direction(vector.new(pos.x,0,pos.z),vector.new(pos2.x,0,pos2.z))
end
self.speed = self.max_speed
self.following = true
end

101
mods/mob/api/movement.lua
View File

@ -74,39 +74,55 @@ mobs.create_movement_functions = function(def,mob_register)
if moveresult and moveresult.touching_ground and self.direction then
local pos = self.object:get_pos()
pos.y = pos.y+0.1
--assume collisionbox is even x and z
local modifier = self.object:get_properties().collisionbox[4]*3
local pos2 = vector.add(vector.multiply(self.direction,modifier),pos)
local ray = minetest.raycast(pos, pos2, false, false)
local pointed_thing
if ray then
pointed_thing = ray:next()
end
if pointed_thing then
if minetest.get_nodedef(minetest.get_node(pointed_thing.under).name, "walkable") then
--print("jump")
local vel = self.object:get_velocity()
--self.jump_timer = 1+math.random()
if self.path_data and table.getn(self.path_data) > 0 then
--smart jump
local y = math.floor(pos.y+0.5)
local vel = self.object:get_velocity()
if y < self.path_data[1].y then
self.object:set_velocity(vector.new(vel.x,5,vel.z))
elseif self.path_data[2] and y < self.path_data[2].y then
self.object:set_velocity(vector.new(vel.x,5,vel.z))
elseif self.path_data[3] and y < self.path_data[3].y then
self.object:set_velocity(vector.new(vel.x,5,vel.z))
elseif ((vel.x == 0 and self.direction.x ~= 0) or (vel.z == 0 and self.direction.z ~= 0)) then
self.object:set_velocity(vector.new(vel.x,5,vel.z))
end
else
--assume collisionbox is even x and z
local modifier = self.object:get_properties().collisionbox[4]*3
local pos2 = vector.add(vector.multiply(self.direction,modifier),pos)
local ray = minetest.raycast(pos, pos2, false, false)
local pointed_thing
if ray then
pointed_thing = ray:next()
end
if pointed_thing then
if minetest.get_nodedef(minetest.get_node(pointed_thing.under).name, "walkable") then
--print("jump")
local vel = self.object:get_velocity()
--self.jump_timer = 1+math.random()
self.object:set_velocity(vector.new(vel.x,5,vel.z))
else
--print("velocity check")
local vel = self.object:get_velocity()
if (vel.x == 0 and self.direction.x ~= 0) or (vel.z == 0 and self.direction.z ~= 0) then
self.object:set_velocity(vector.new(vel.x,5,vel.z))
end
end
else
--print("velocity check")
--print("velcheck 2")
local vel = self.object:get_velocity()
if (vel.x == 0 and self.direction.x ~= 0) or (vel.z == 0 and self.direction.z ~= 0) then
self.object:set_velocity(vector.new(vel.x,5,vel.z))
end
end
else
--print("velcheck 2")
local vel = self.object:get_velocity()
if (vel.x == 0 and self.direction.x ~= 0) or (vel.z == 0 and self.direction.z ~= 0) then
self.object:set_velocity(vector.new(vel.x,5,vel.z))
end
end
end
end
@ -164,8 +180,43 @@ mobs.create_movement_functions = function(def,mob_register)
end
if def.pathfinds then
mob_register.pathfinding = function(self,dtime)
if self.following and self.following_pos then
self.pathfinding_timer = self.pathfinding_timer + dtime
if self.pathfinding_timer > 1 then
self.pathfinding_timer = 0
local path = minetest.find_path(self.object:get_pos(),self.following_pos,self.view_distance*2,1,1,"A*_noprefetch")
if path and (not self.path_data or (self.path_data and table.getn(self.path_data) < 3)) then
self.path_data = path
end
if self.path_data then
for index,pos_data in pairs(self.path_data) do
--print(dump(pos_data))
minetest.add_particle({
pos = pos_data,
velocity = {x=0, y=0, z=0},
acceleration = {x=0, y=0, z=0},
expirationtime = 1,
size = 1,
texture = "dirt.png",
})
end
end
end
end
local selfpos = self.object:get_pos()
local pos1 = vector.new(selfpos.x,0,selfpos.z)
if self.path_data and table.getn(self.path_data) > 0 and vector.distance(pos1,vector.new(self.path_data[1].x,0,self.path_data[1].z)) < 1 then
--shift whole list down
for i = 2,table.getn(self.path_data) do
self.path_data[i-1] = self.path_data[i]
end
self.path_data[table.getn(self.path_data)] = nil
end
end
end
return(mob_register)

4
mods/mob/init.lua
View File

@ -630,8 +630,6 @@ mobs.register_mob(
},
--these are used to anchor a point to the head position
-----
head_bone = "body.head",
debug_head_pos = false,
@ -668,6 +666,8 @@ mobs.register_mob(
die_sound = "spider_die",
pathfinds = true,
hostile = true,
friendly_in_daylight = true,
attacked_hostile = true,