Initial commit

.gitignore

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+## Generic ignorable patterns and files
+*~
+.*.swp
+*bak*
+tags
+*.vim
+

LICENSE.txt

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+Hovercraft for Minetest [hovercraft]
+====================================
+
+Source Code: Copyright (C) 2013 Stuart Jones - LGPL
+
+Tetxures: Copyright (C) 2013 Stuart Jones - CC-BY-SA
+
+Models: Copyright (C) 2013 Stuart Jones - CC-BY-SA
+
+Sounds: freesound.org
+
+	Rocket Boost Engine Loop by qubodup - CC0
+	CARTOON-BING-LOW by kantouth - CC-BY-3.0
+	All other sounds: Copyright Stuart Jones - CC-BY-SA
+

README.txt

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+Hovercraft for Minetest [hovercraft]
+====================================
+
+A fun alternative mode of transport for Minetest.
+
+Controls
+========
+	
+	Forward (W)	Thrust
+	Jump (Space)	Jump
+	Mouse Move	Rotate
+
+Know Issues
+===========
+
+'Bouncing' into thin air: This can simply be the result of server lag (even in singleplayer).
+The client and server are out of sync. Solution, just be patient and allow the environment
+to full load before preceding.
+
+Problems with bouncing in air and generally getting stuck, being pulled underwater and
+all manner of other weirdness can also be caused by a rather nasty entity duplication bug in minetest itself.
+The only solution here is to track down and remove any duplicate entities or by running /clearobjects
+
+Entity Duplication: See above. This usually occurs when you move a given distance from where the entity
+was originally placed. The only solution right now is to restrict the hovercraft to a certain area.
+For example, create a sunken race track the hovercraft cannot physically escape from.

depends.txt

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+default

hover.lua

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+hover = {}
+
+function hover:register_hovercraft(name, def)
+	minetest.register_entity(name, {
+		physical = true,
+		collisionbox = {-0.8,0,-0.8, 0.8,1.2,0.8},
+		visual = "mesh",
+		mesh = "hovercraft.x",
+		textures = def.textures,
+		max_speed = def.max_speed,
+		acceleration = def.acceleration,
+		deceleration = def.deceleration,
+		jump_velocity = def.jump_velocity,
+		fall_velocity = def.fall_velocity,
+		player = nil,
+		sound = nil,
+		thrust = 0,
+		velocity = {x=0, y=0, z=0},
+		last_pos = {x=0, y=0, z=0},
+		timer = 0,
+		on_activate = function(self, staticdata, dtime_s)
+			self.object:set_animation({x=0, y=24}, 30)
+		end,
+		on_rightclick = function(self, clicker)
+			if not clicker or not clicker:is_player() then
+				return
+			end
+			local pos = self.object:getpos()
+			if self.player and clicker == self.player then
+				if self.sound then					
+					minetest.sound_stop(self.sound)
+					minetest.sound_play("hovercraft_thrust_fade", {object = self.object})
+					self.sound = nil
+				end
+				self.thrust = 0
+				self.player = nil
+				self.object:set_animation({x=0, y=24}, 30)
+				clicker:set_animation({x=0, y=0})
+				clicker:set_detach()
+			elseif not self.player then
+				self.player = clicker
+				clicker:set_attach(self.object, "", {x=-2,y=16.5,z=0}, {x=0,y=90,z=0})
+				clicker:set_animation({x=81, y=81})
+				local yaw = clicker:get_look_yaw()
+				self.object:setyaw(yaw)
+				self.yaw = yaw
+				pos.y = pos.y + 0.5
+				minetest.sound_play("hovercraft_jump", {object = self.object})
+				self.object:set_animation({x=0, y=0})
+			end
+			self.last_pos = pos
+			self.object:setpos(pos)
+		end,
+		on_step = function(self, dtime)
+			self.timer = self.timer + dtime
+			if self.player then
+				local yaw = self.player:get_look_yaw()
+				if not yaw then
+					return
+				end
+				self.object:setyaw(yaw)
+				local ctrl = self.player:get_player_control()
+				if ctrl.up then
+					if self.thrust < self.max_speed then
+						self.thrust = self.thrust + self.acceleration
+					end
+					local velocity = hover:get_velocity(self.thrust, self.velocity.y, 0, yaw)
+					if velocity.x < self.velocity.x then
+						self.velocity.x = self.velocity.x - self.acceleration
+					elseif velocity.x > self.velocity.x then
+						self.velocity.x = self.velocity.x + self.acceleration
+					end
+					if velocity.z < self.velocity.z then
+						self.velocity.z = self.velocity.z - self.acceleration
+					elseif velocity.z > self.velocity.z then
+						self.velocity.z = self.velocity.z + self.acceleration
+					end
+					if not self.sound then
+						self.object:set_animation({x=25, y=75}, 30)
+						self.sound = minetest.sound_play("hovercraft_thrust_loop", {
+							object = self.object,
+							loop = true,
+						})
+					end
+				elseif self.thrust > 0 then
+					self.thrust = self.thrust - 0.1
+					if self.sound then
+						minetest.sound_stop(self.sound)
+						minetest.sound_play("hovercraft_thrust_fade", {object = self.object})
+						self.sound = nil
+					end
+				else
+					self.object:set_animation({x=0, y=0})
+					self.thrust = 0
+				end
+				if ctrl.jump and self.velocity.y == 0 then
+					self.velocity.y = self.jump_velocity
+					self.timer = 0
+					minetest.sound_play("hovercraft_jump", {object = self.object})
+				end	
+				if ctrl.sneak then
+					self.player:set_animation({x=81, y=81})
+				end
+			end
+			local pos = self.object:getpos()
+			if self.timer > 0.5 then
+				local node = minetest.env:get_node({x=pos.x, y=pos.y-0.5, z=pos.z})
+				if node.name == "air" or node.name == "ignore" then
+					self.velocity.y = 0 - self.fall_velocity
+				else
+					self.velocity.y = 0
+					pos.y = math.floor(pos.y) + 0.5
+					self.object:setpos(pos)
+				end
+				self.timer = 0
+			end
+			if self.last_pos.x == pos.x and math.abs(self.velocity.x) > 0.5 then
+				self.velocity.x = self.velocity.x * -0.8
+				self.thrust = 0
+				minetest.sound_play("hovercraft_bounce", {object = self.object})
+			end
+			if self.last_pos.z == pos.z and math.abs(self.velocity.z) > 0.5 then
+				self.velocity.z = self.velocity.z * -0.8
+				self.thrust = 0
+				minetest.sound_play("hovercraft_bounce", {object = self.object})
+			end
+			self.last_pos = pos	
+			if self.velocity.x > self.deceleration then
+				self.velocity.x = self.velocity.x - self.deceleration
+			elseif self.velocity.x < 0 - self.deceleration then
+				self.velocity.x = self.velocity.x + self.deceleration
+			else
+				self.velocity.x = 0
+			end
+			if self.velocity.z > self.deceleration then
+				self.velocity.z = self.velocity.z - self.deceleration
+			elseif self.velocity.z < 0 - self.deceleration then
+				self.velocity.z = self.velocity.z + self.deceleration
+			else
+				self.velocity.z = 0
+			end
+			self.object:setvelocity(self.velocity)	
+		end,
+	})
+	minetest.register_craftitem(name, {
+		description = def.description,
+		inventory_image = def.inventory_image,
+		liquids_pointable = true,	
+		on_place = function(itemstack, placer, pointed_thing)
+			if pointed_thing.type ~= "node" then
+				return
+			end
+			pointed_thing.under.y = pointed_thing.under.y + 0.5
+			minetest.env:add_entity(pointed_thing.under, name)
+			itemstack:take_item()
+			return itemstack
+		end,
+	})
+end
+
+function hover:get_velocity(vx, vy, vz, yaw)
+	local x = math.cos(yaw)*vx+math.cos(math.pi/2+yaw)*vz
+	local z = math.sin(yaw)*vx+math.sin(math.pi/2+yaw)*vz
+	return {x=x, y=vy, z=z}
+end
+

init.lua

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+dofile(minetest.get_modpath("hovercraft").."/hover.lua")
+
+hover:register_hovercraft("hovercraft:hover_red" ,{
+	description = "Red Hovercraft",
+	textures = {"hovercraft_red.png"},
+	inventory_image = "hovercraft_red_inv.png",
+	max_speed = 10,
+	acceleration = 0.25,
+	deceleration = 0.025,
+	jump_velocity = 4.0,
+	fall_velocity = 1.0,
+})
+
+hover:register_hovercraft("hovercraft:hover_blue" ,{
+	description = "Blue Hovercraft",
+	textures = {"hovercraft_blue.png"},
+	inventory_image = "hovercraft_blue_inv.png",
+	max_speed = 12,
+	acceleration = 0.25,
+	deceleration = 0.05,
+	jump_velocity = 4,
+	fall_velocity = 1,
+})
+