mods/mob/api/interaction.lua

   1 --
   2 mobs.create_interaction_functions = function(def,mob_register)
   3         --the sword wear mechanic
   4         mob_register.add_sword_wear = function(self, puncher, time_from_last_punch, tool_capabilities, dir)
   5                 if puncher:is_player() then
   6                         local itemstack = puncher:get_wielded_item()
   7                         local wear = itemstack:get_definition().mob_hit_wear
   8                         if wear then
   9                                 itemstack:add_wear(wear)
  10                                 if itemstack:get_name() == "" then
  11                                         minetest.sound_play("tool_break",{to_player = puncher:get_player_name(),gain=0.4})
  12                                 end
  13                                 puncher:set_wielded_item(itemstack)
  14                         end
  15                 end
  16         end
  17
  18         --critical effect particles
  19         mob_register.do_critical_particles = function(pos)
  20                 minetest.add_particlespawner({
  21                         amount = 40,
  22                         time = 0.001,
  23                         minpos = pos,
  24                         maxpos = pos,
  25                         minvel = vector.new(-2,-2,-2),
  26                         maxvel = vector.new(2,8,2),
  27                         minacc = {x=0, y=4, z=0},
  28                         maxacc = {x=0, y=12, z=0},
  29                         minexptime = 1.1,
  30                         maxexptime = 1.5,
  31                         minsize = 1,
  32                         maxsize = 2,
  33                         collisiondetection = false,
  34                         vertical = false,
  35                         texture = "critical.png",
  36                 })
  37         end
  38
  39         mob_register.collision_detection = function(self)
  40                 local pos = self.object:get_pos()
  41                 --do collision detection from the base of the mob
  42                 pos.y = pos.y - self.object:get_properties().collisionbox[2]
  43                 for _,object in ipairs(minetest.get_objects_inside_radius(pos, self.collision_boundary)) do
  44                         if object:is_player() or object:get_luaentity().mob == true then
  45                                 local pos2 = object:get_pos()
  46
  47                                 local dir = vector.direction(pos,pos2)
  48                                 dir.y = 0
  49
  50                                 --eliminate mob being stuck in corners
  51                                 if dir.x == 0 and dir.z == 0 then
  52                                         dir = vector.new(math.random(-1,1)*math.random(),0,math.random(-1,1)*math.random())
  53                                 end
  54
  55                                 local velocity = vector.multiply(dir,1.1)
  56
  57                                 local vel1 = vector.multiply(velocity, -1)
  58                                 local vel2 = velocity
  59                                 self.object:add_velocity(vel1)
  60
  61                                 if object:is_player() then
  62                                         object:add_player_velocity(vel2)
  63                                 else
  64                                         object:add_velocity(vel2)
  65                                 end
  66                         end
  67                 end
  68         end
  69
  70         mob_register.fall_damage = function(self)
  71                 local vel = self.object:get_velocity()
  72                 if vel and self.oldvel then
  73                    if self.oldvel.y < -7 and vel.y == 0 then
  74                           local damage = math.abs(self.oldvel.y + 7)
  75                           damage = math.floor(damage/1.5)
  76                           self.object:punch(self.object, 2,
  77                                  {
  78                                   full_punch_interval=1.5,
  79                                   damage_groups = {damage=damage},
  80                                  })
  81                    end
  82                 end
  83                 self.oldvel = vel
  84         end
  85
  86         --this controls what happens when the mob gets punched
  87         mob_register.on_punch = function(self, puncher, time_from_last_punch, tool_capabilities, dir)
  88                 local hp = self.hp
  89                 local vel = self.object:get_velocity()
  90                 local hurt = tool_capabilities.damage_groups.damage
  91
  92                 if not hurt then
  93                         hurt = 1
  94                 end
  95
  96                 local critical = false
  97
  98                 --criticals
  99                 local pos = self.object:get_pos()
 100                 if puncher:is_player() then
 101                         local puncher_vel = puncher:get_player_velocity().y
 102                         if puncher_vel < 0 then
 103                                 hurt = hurt * 1.5
 104                                 critical = true
 105                         end
 106                 end
 107
 108                 local hp = hp-hurt
 109
 110                 if (self.punched_timer <= 0 and hp > 1) and not self.dead then
 111                         self.object:set_texture_mod("^[colorize:red:130")
 112                         self.hurt_color_timer = 0.25
 113                         if puncher ~= self.object then
 114                                 self.punched_timer = 0.8
 115                                 if self.attacked_hostile then
 116                                         self.hostile = true
 117                                         self.hostile_timer = 20
 118                                         if self.group_attack == true then
 119                                                 for _,object in ipairs(minetest.get_objects_inside_radius(pos, self.view_distance)) do
 120                                                         if not object:is_player() and object:get_luaentity() and object:get_luaentity().mobname == self.mobname then
 121                                                                 object:get_luaentity().hostile = true
 122                                                                 object:get_luaentity().hostile_timer = 20
 123                                                         end
 124                                                 end
 125                                         end
 126                                 end
 127                         end
 128
 129                         --critical effect
 130                         if critical == true then
 131                                 self.do_critical_particles(pos)
 132                                 minetest.sound_play("critical", {object=self.object, gain = 0.1, max_hear_distance = 10,pitch = math.random(80,100)/100})
 133                         end
 134                         minetest.sound_play(self.hurt_sound, {object=self.object, gain = 1.0, max_hear_distance = 10,pitch = math.random(100,140)/100})
 135
 136                         self.hp = hp
 137
 138                         self.direction = vector.multiply(dir,-1)
 139                         dir = vector.multiply(dir,10)
 140                         if vel.y <= 0 then
 141                                 dir.y = 4
 142                         else
 143                                 dir.y = 0
 144                         end
 145
 146
 147                         self.object:add_velocity(dir)
 148                         self.add_sword_wear(self, puncher, time_from_last_punch, tool_capabilities, dir)
 149                 elseif (self.punched_timer <= 0 and self.death_animation_timer == 0) then
 150                         self.object:set_texture_mod("^[colorize:red:130")
 151                         self.hurt_color_timer = 0.25
 152                         if puncher ~= self.object then
 153                                 self.punched_timer = 0.8
 154                                 if self.attacked_hostile then
 155                                         self.hostile = true
 156                                         self.hostile_timer = 20
 157                                         if self.group_attack == true then
 158                                                 for _,object in ipairs(minetest.get_objects_inside_radius(pos, self.view_distance)) do
 159                                                         if not object:is_player() and object:get_luaentity() and object:get_luaentity().mobname == self.mobname then
 160                                                                 object:get_luaentity().hostile = true
 161                                                                 object:get_luaentity().hostile_timer = 20
 162                                                         end
 163                                                 end
 164                                         end
 165                                 end
 166                         end
 167                         self.death_animation_timer = 1
 168                         self.dead = true
 169
 170                         --critical effect
 171                         if critical == true then
 172                                 self.do_critical_particles(pos)
 173                                 minetest.sound_play("critical", {object=self.object, gain = 0.1, max_hear_distance = 10,pitch = math.random(80,100)/100})
 174                         end
 175                         minetest.sound_play(self.die_sound, {object=self.object, gain = 1.0, max_hear_distance = 10,pitch = math.random(80,100)/100})
 176                         self.add_sword_wear(self, puncher, time_from_last_punch, tool_capabilities, dir)
 177                 end
 178         end
 179
 180         --this is what happens when a mob dies
 181         mob_register.on_death = function(self, killer)
 182                 local pos = self.object:get_pos()
 183                 --pos.y = pos.y + 0.4
 184                 minetest.sound_play("mob_die", {pos = pos, gain = 1.0})
 185                 minetest.add_particlespawner({
 186                         amount = 40,
 187                         time = 0.001,
 188                         minpos = pos,
 189                         maxpos = pos,
 190                         minvel = vector.new(-5,-5,-5),
 191                         maxvel = vector.new(5,5,5),
 192                         minacc = {x=0, y=0, z=0},
 193                         maxacc = {x=0, y=0, z=0},
 194                         minexptime = 1.1,
 195                         maxexptime = 1.5,
 196                         minsize = 1,
 197                         maxsize = 2,
 198                         collisiondetection = false,
 199                         vertical = false,
 200                         texture = "smoke.png",
 201                 })
 202
 203                 --only throw items if registered
 204                 if self.item_drop then
 205                         --detect if multiple items are going to be added
 206                         if self.item_amount  and self.item_minumum then
 207                                 local data_item_amount = math.random(self.item_minimum, self.item_amount)
 208                                 for i = self.item_minimum,data_item_amount do
 209                                         minetest.throw_item(pos,self.item_drop)
 210                                 end
 211                         else
 212                                 minetest.throw_item(pos,self.item_drop)
 213                         end
 214                 end
 215
 216                 global_mob_amount = global_mob_amount - 1
 217                 print("Mobs Died. Current Mobs: "..global_mob_amount)
 218
 219                 self.object:remove()
 220         end
 221
 222         --the pig will look for and at players
 223         mob_register.look_around = function(self,dtime)
 224                 local pos = self.object:get_pos()
 225
 226                 if self.die_in_light and self.die_in_light_level and self.die_in_light == true then
 227                         local light_level = minetest.get_node_light(pos)
 228                         if light_level then
 229                                 if (self.die_in_light == true and light_level > self.die_in_light_level) then
 230                                         local damage = self.hp
 231                                         self.object:punch(self.object, 2,
 232                                                 {
 233                                                 full_punch_interval=1.5,
 234                                                 damage_groups = {damage=damage},
 235                                         })
 236                                 end
 237                         end
 238                 end
 239
 240                 --STARE O_O
 241                 --and follow!
 242                 self.following = false
 243                 local player_found = false
 244                 for _,object in ipairs(minetest.get_objects_inside_radius(pos, self.view_distance)) do
 245                         if object:is_player() and player_found == false and object:get_hp() > 0 then
 246                                 --look at player's camera
 247                                 local pos2 = object:get_pos()
 248                                 pos2.y = pos2.y + 1.625
 249
 250                                 player_found = false
 251
 252                                 if self.head_bone then
 253                                         player_found = self.move_head(self,pos2,dtime)
 254                                 end
 255
 256
 257                                 if self.hostile == true then
 258                                         local distance = vector.distance(pos,pos2)
 259
 260                                         --punch the player
 261                                         if self.attack_type == "punch" then
 262                                                 if distance < 2.5 and self.punch_timer <= 0 and object:get_hp() > 0 then
 263                                                         local line_of_sight = minetest.line_of_sight(pos, pos2)
 264                                                         if line_of_sight == true then
 265                                                                 self.punch_timer = 1
 266                                                                 object:punch(self.object, 2,
 267                                                                         {
 268                                                                         full_punch_interval=1.5,
 269                                                                         damage_groups = {fleshy=2},
 270                                                                 },vector.direction(pos,pos2))
 271                                                         end
 272                                                 end
 273                                         elseif self.attack_type == "explode" then
 274                                                 if distance <  self.explosion_radius then
 275
 276                                                         if not self.tnt_timer then
 277                                                                 minetest.sound_play("tnt_ignite", {object = self.object, gain = 1.0,})
 278                                                                 self.tnt_timer = self.explosion_time
 279                                                                 self.tnt_tick_timer  = 0.2
 280                                                                 self.tnt_mod_state = 1
 281                                                                 self.object:set_texture_mod("^[colorize:white:130")
 282                                                         end
 283                                                 end
 284                                         elseif self.attack_type == "projectile" then
 285                                                 if not self.projectile_timer then
 286                                                         self.projectile_timer = self.projectile_timer_cooldown
 287                                                 end
 288                                                 if self.projectile_timer <= 0 then
 289                                                         self.projectile_timer = self.projectile_timer_cooldown
 290
 291                                                         local obj = minetest.add_entity(pos, self.projectile_type)
 292                                                         if obj then
 293                                                                 local dir = vector.multiply(vector.direction(pos,pos2), 50)
 294                                                                 obj:set_velocity(dir)
 295                                                                 obj:get_luaentity().timer = 2
 296                                                         end
 297                                                 end
 298                                         end
 299                                         self.direction = vector.direction(vector.new(pos.x,0,pos.z),vector.new(pos2.x,0,pos2.z))
 300                                         self.speed = self.max_speed
 301                                         self.following = true
 302                                 end
 303                                 --only look at one player
 304                                 break
 305                         end
 306                 end
 307                 --stare straight if not found
 308                 if player_found == false then
 309                         --self.move_head(self,nil,dtime)
 310                         if self.manage_hostile_timer then
 311                                 self.manage_hostile_timer(self,dtime)
 312                         end
 313                 end
 314         end
 315
 316         return(mob_register)
 317 end