MineClone2/mods/ENTITIES/mobs_mc/horse.lua

--MCmobs v0.2
--maikerumine
--made for MC like Survival game
--License for code WTFPL and otherwise stated in readmes


--dofile(minetest.get_modpath("mobs").."/api.lua")

-------------------------
--KPGMOBS HORSE
-------------------------
--By: KrupnovPavel
--Tweaked by: maikerumine
local function is_ground(pos)
	local nn = minetest.get_node(pos).name
	return minetest.get_item_group(nn, "crumbly") ~= 0 or
	minetest.get_item_group(nn, "choppy") ~= 0 or
	minetest.get_item_group(nn, "cracky") ~= 0  or
	minetest.get_item_group(nn, "snappy") ~= 0  or
	minetest.get_item_group(nn, "unbreakable") ~= 0  or
	minetest.get_item_group(nn, "immortal") ~= 0
end

local function get_sign(i)
	if i == 0 then
		return 0
	else
		return i/math.abs(i)
	end
end

local function get_velocity(v, yaw, y)
	local x = math.cos(yaw)*v
	local z = math.sin(yaw)*v
	return {x=x, y=y, z=z}
end

local function get_v(v)
	return math.sqrt(v.x^2+v.z^2)
end

local function merge(a, b)
    if type(a) == 'table' and type(b) == 'table' then
        for k,v in pairs(b) do if type(v)=='table' and type(a[k] or false)=='table' then merge(a[k],v) else a[k]=v end end
    end
    return a
end

-- HORSE go go goooo :)
local horse = {
	physical = true,
	collisionbox = {-0.4, -0.01, -0.4, 0.4, 1, 0.4},
	textures = {
		{"mobs_horseh.png"},
		{"mobs_horsepegh.png"},
		{"mobs_horsearah.png"},
	},
	visual = "mesh",
	stepheight = 1.1,
	visual_size = {x=1,y=1},
	mesh = "mobs_horseh1.x",
	driver = nil,
	v = 0,
	jump_height = 2,

	on_rightclick = function(self, clicker)
		if not clicker or not clicker:is_player() then
			return
		end
		if self.driver and clicker == self.driver then
			self.driver = nil
			clicker:set_detach()
		elseif not self.driver then
			self.driver = clicker
			clicker:set_attach(self.object, "", {x=0,y=11,z=0}, {x=0,y=0,z=0})
			self.object:setyaw(clicker:get_look_yaw())
		end
	end,

	on_activate = function(self, staticdata, dtime_s)
		self.object:set_armor_groups({immortal=1})
		print (self.texture, self.jmp)
	end,

	on_punch = function(self, puncher, time_from_last_punch, tool_capabilities, direction)
		if puncher and puncher:is_player() then
			self.object:remove()
		end
	end,

	on_step = function(self, dtime)

		self.v = get_v(self.object:getvelocity())*get_sign(self.v)

		if self.driver then
			local ctrl = self.driver:get_player_control()
			if ctrl.up then
				self.v = self.v + self.jmp
			end
			if ctrl.down then
				self.v = self.v-0.1
			end
			if ctrl.left then
				self.object:setyaw(self.object:getyaw()+math.pi/120+dtime*math.pi/120)
			end
			if ctrl.right then
				self.object:setyaw(self.object:getyaw()-math.pi/120-dtime*math.pi/120)
			end
			if ctrl.jump then
				local p = self.object:getpos()
				p.y = p.y-0.5
				if is_ground(p) then
					local pos = self.object:getpos()
					pos.y = math.floor(pos.y)+4
					self.object:setpos(pos)
					self.object:setvelocity(get_velocity(self.v, self.object:getyaw(), 0))
				end
			end
		end

		local s = get_sign(self.v)
		self.v = self.v - 0.02*s
		if s ~= get_sign(self.v) then
			self.object:setvelocity({x=0, y=0, z=0})
			self.v = 0
			return
		end

		if math.abs(self.v) > 4.5 then
			self.v = 4.5*get_sign(self.v)
		end

		local p = self.object:getpos()
		p.y = p.y-0.5

		if not is_ground(p) then
			if minetest.registered_nodes[minetest.get_node(p).name].walkable then
				self.v = 0
			end
			self.object:setacceleration({x=0, y=-10, z=0})
			self.object:setvelocity(get_velocity(self.v, self.object:getyaw(), self.object:getvelocity().y))
		else
			p.y = p.y+1
			if is_ground(p) then
				self.object:setacceleration({x=0, y=3, z=0})
				local y = self.object:getvelocity().y
				if y > 2 then
					y = 2
				end
				if y < 0 then
					self.object:setacceleration({x=0, y=10, z=0})
				end
				self.object:setvelocity(get_velocity(self.v, self.object:getyaw(), y))
			else
				self.object:setacceleration({x=0, y=0, z=0})
				if math.abs(self.object:getvelocity().y) < 1 then
					local pos = self.object:getpos()
					pos.y = math.floor(pos.y)+0.5
					self.object:setpos(pos)
					self.object:setvelocity(get_velocity(self.v, self.object:getyaw(), 0))
				else
					self.object:setvelocity(get_velocity(self.v, self.object:getyaw(), self.object:getvelocity().y))
				end
			end
		end
	end,
}

minetest.register_entity("mobs_mc:horse", horse)

mobs:register_mob("mobs_mc:horse", {
	type = "animal",
	hp_min = 5,
	hp_max = 10,
	collisionbox = {-0.4, -0.01, -0.4, 0.4, 1, 0.4},
	textures = {
		{"mobs_horseh.png"},
		{"mobs_horsepegh.png"},
		{"mobs_horsearah.png"},
	},
	visual = "mesh",
	mesh = "mobs_horse.x",
	makes_footstep_sound = true,
	walk_velocity = 1,
	armor = 200,
	drops = {
		{name = "mcl_mobitems:leather",
		chance = 1,
		min = 0,
		max = 2,},
	},
	drawtype = "front",
	lava_damage = minetest.registered_nodes["mcl_core:lava_source"].damage_per_second,
	light_damage = 0,
	fear_height = 6,
	animation = {
		speed_normal = 15,
		stand_start = 25,		stand_end = 75,
		walk_start = 75,		walk_end = 100,
	},
	follow = "mcl_farming:wheat_item",
	view_range = 5,

	on_rightclick = function(self, clicker)
		local tool = clicker:get_wielded_item()
		if tool:get_name() == "mcl_mobitems:saddle" then
			clicker:get_inventory():remove_item("main", "mcl_mobitems:saddle")
			local pos = self.object:getpos()
			self.object:remove()
			minetest.add_entity(pos, "mobs_mc:horseh1")
		end
	end,
})

mobs:register_spawn("mobs_mc:horse", {"mcl_core:dirt_with_grass", "mcl_core:dirt"}, 20, 9, 21000, 1, 12)

-- Compatibility
mobs:alias_mob("mobs:horse", "mobs_mc:horse")
mobs:alias_mob("mobs:horse2", "mobs_mc:horse2")
mobs:alias_mob("mobs:horse3", "mobs_mc:horse3")

-- Legacy
mobs:alias_mob("mobs_mc:horse2", "mobs_mc:horse")
mobs:alias_mob("mobs_mc:horse3", "mobs_mc:horse")
mobs:alias_mob("mobs_mc:horseh1", "mobs_mc:horse")
mobs:alias_mob("mobs_mc:horsepegh1", "mobs_mc:horse")
mobs:alias_mob("mobs_mc:horsearah1", "mobs_mc:horse")

-- Spawn eggs
mobs:register_egg("mobs_mc:horse", "Spawn Horse", "spawn_egg_horse.png", 0)

if minetest.setting_get("log_mods") then
	minetest.log("action", "MC Horse loaded")
end