Separate player code into new mod

README.txt

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+Minetest Game mod: player_api
+============================
+See license.txt for license information.
+
+Provides an API to allow multiple mods to set player models and textures.
+Also sets the default model, texture, and player flags.
+
+Authors of source code
+----------------------
+Originally by celeron55, Perttu Ahola <celeron55@gmail.com> (LGPL 2.1)
+Various Minetest developers and contributors (LGPL 2.1)
+
+Authors of media (textures, models and sounds)
+----------------------------------------------
+
+MirceaKitsune (CC BY-SA 3.0):
+  character.x
+
+Jordach (CC BY-SA 3.0):
+  character.png

api.lua

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+-- Minetest 0.4 mod: player
+-- See README.txt for licensing and other information.
+
+player_api = {}
+
+-- Player animation blending
+-- Note: This is currently broken due to a bug in Irrlicht, leave at 0
+local animation_blend = 0
+
+player_api.registered_models = { }
+
+-- Local for speed.
+local models = player_api.registered_models
+
+function player_api.register_model(name, def)
+	models[name] = def
+end
+
+-- Player stats and animations
+local player_model = {}
+local player_textures = {}
+local player_anim = {}
+local player_sneak = {}
+player_api.player_attached = {}
+
+function player_api.get_animation(player)
+	local name = player:get_player_name()
+	return {
+		model = player_model[name],
+		textures = player_textures[name],
+		animation = player_anim[name],
+	}
+end
+
+-- Called when a player's appearance needs to be updated
+function player_api.set_model(player, model_name)
+	local name = player:get_player_name()
+	local model = models[model_name]
+	if model then
+		if player_model[name] == model_name then
+			return
+		end
+		player:set_properties({
+			mesh = model_name,
+			textures = player_textures[name] or model.textures,
+			visual = "mesh",
+			visual_size = model.visual_size or {x=1, y=1},
+		})
+		player_api.set_animation(player, "stand")
+	else
+		player:set_properties({
+			textures = { "player.png", "player_back.png", },
+			visual = "upright_sprite",
+		})
+	end
+	player_model[name] = model_name
+end
+
+function player_api.set_textures(player, textures)
+	local name = player:get_player_name()
+	player_textures[name] = textures
+	player:set_properties({textures = textures,})
+end
+
+function player_api.set_animation(player, anim_name, speed)
+	local name = player:get_player_name()
+	if player_anim[name] == anim_name then
+		return
+	end
+	local model = player_model[name] and models[player_model[name]]
+	if not (model and model.animations[anim_name]) then
+		return
+	end
+	local anim = model.animations[anim_name]
+	player_anim[name] = anim_name
+	player:set_animation(anim, speed or model.animation_speed, animation_blend)
+end
+
+minetest.register_on_leaveplayer(function(player)
+	local name = player:get_player_name()
+	player_model[name] = nil
+	player_anim[name] = nil
+	player_textures[name] = nil
+end)
+
+-- Localize for better performance.
+local player_set_animation = player_api.set_animation
+local player_attached = player_api.player_attached
+
+-- Check each player and apply animations
+minetest.register_globalstep(function(dtime)
+	for _, player in pairs(minetest.get_connected_players()) do
+		local name = player:get_player_name()
+		local model_name = player_model[name]
+		local model = model_name and models[model_name]
+		if model and not player_attached[name] then
+			local controls = player:get_player_control()
+			local walking = false
+			local animation_speed_mod = model.animation_speed or 30
+
+			-- Determine if the player is walking
+			if controls.up or controls.down or controls.left or controls.right then
+				walking = true
+			end
+
+			-- Determine if the player is sneaking, and reduce animation speed if so
+			if controls.sneak then
+				animation_speed_mod = animation_speed_mod / 2
+			end
+
+			-- Apply animations based on what the player is doing
+			if player:get_hp() == 0 then
+				player_set_animation(player, "lay")
+			elseif walking then
+				if player_sneak[name] ~= controls.sneak then
+					player_anim[name] = nil
+					player_sneak[name] = controls.sneak
+				end
+				if controls.LMB then
+					player_set_animation(player, "walk_mine", animation_speed_mod)
+				else
+					player_set_animation(player, "walk", animation_speed_mod)
+				end
+			elseif controls.LMB then
+				player_set_animation(player, "mine")
+			else
+				player_set_animation(player, "stand", animation_speed_mod)
+			end
+		end
+	end
+end)

init.lua

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+dofile(minetest.get_modpath("player_api") .. "/api.lua")
+
+-- Default player appearance
+player_api.register_model("character.b3d", {
+	animation_speed = 30,
+	textures = {"character.png", },
+	animations = {
+		-- Standard animations.
+		stand     = { x=  0, y= 79, },
+		lay       = { x=162, y=166, },
+		walk      = { x=168, y=187, },
+		mine      = { x=189, y=198, },
+		walk_mine = { x=200, y=219, },
+		sit       = { x= 81, y=160, },
+	},
+})
+
+-- Update appearance when the player joins
+minetest.register_on_joinplayer(function(player)
+	player_api.player_attached[player:get_player_name()] = false
+	player_api.set_model(player, "character.b3d")
+	player:set_local_animation({x=0, y=79}, {x=168, y=187}, {x=189, y=198}, {x=200, y=219}, 30)
+
+	player:hud_set_hotbar_image("gui_hotbar.png")
+	player:hud_set_hotbar_selected_image("gui_hotbar_selected.png")
+end)