minetest.git - modified minetest for gpcfs purposes

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-- Hangglider mod for Minetest -- Original code by Piezo_ (orderofthefourthwall@gmail.com) -- 2018-11-14 -- Modifications by David G (kestral246@gmail.com) -- 2018-11-24 -- For Minetest 5.x, glider's set_attach needs to be offset by 1 node -- Switch to alternate commented line below with correct offset. -- Additional tuning of parameters. -- Commented out debug hud display code, prefixed with "--debug:". -- 2018-11-22 -- Give visual indication that hangglider is equiped. -- Display simple overlay with blurred struts when equiped. -- Issue: don't know how to disable overlay in third person view. -- Also Unequip hangglider when landing on water. -- Attempt to linearize parabolic flight path. -- Start gravity stronger, but gradually reduce it as descent velocity increases. -- Don't use airstopper when equipped from the ground (descent velocity is low). -- Slightly increase flight speed to 1.25. -- Unequip/equip cycling mid-flight should not fly farther than continuous flight. -- When equipping mid-air (descent velocity higher), use airstopper but increase descent slope afterwards. -- Create airbreak flag so all equips mid-flight use faster descent. -- Reset airbreak flag only when land (canExist goes false). -- Issue: it wouldn't reset if land in water, use fly, and launch from air, before I added test for water, -- not sure if there are other such cases. -- Temporarily add hud debug display to show descent velocity, gravity override, and airbreak flag. -- Still in process of tuning all the parameters. -- Modifications by Piezo_ -- 2018-11-25 -- hud overlay and debug can be enabled/disabled -- Added blender-rendered overlay for struts using the actual model. -- Reduced airbreak penalty severity -- gave glider limited durability. -- Improved gravity adjustment function. -- Changed airbreaking process -- Removed airbreak penalty, as any 'advantage' seems minimal after new adjustments local HUD_Overlay = true --show glider struts as overlay on HUD local debug = false --show debug info in top-center of hud local moveModelUp = false if tonumber(string.sub(minetest.get_version().string, 1, 1)) and tonumber(string.sub(minetest.get_version().string, 1, 1)) > 4 then moveModelUp = true end hangglider = {} --Make this global, so other mods can tell if hangglider exists. hangglider.use = {} if HUD_Overlay then hangglider.id = {} -- hud id for displaying overlay with struts end if debug then hangglider.debug = {} end -- hud id for debug data --hangglider.airbreak = {} -- true if falling fast when equip --[[ minetest.register_entity("hangglider:airstopper", { --A one-instant entity that catches the player and stops them. is_visible = false, physical = false, immortal = true, attach = nil, on_step = function(self, _) local canExist = false if self.attach then local player = self.attach if player:is_player() then local pname = player:get_player_name() canExist = true if player:get_player_velocity().y < 0.5 and player:get_player_velocity().y > -0.5 then --Let go when the player actually stops, as that's the whole point. if hangglider.use[pname] then if moveModelUp then minetest.add_entity(player:get_pos(), "hangglider:glider"):set_attach(player, "", {x=0,y=10,z=0}, {x=0,y=0,z=0}) else minetest.add_entity(player:get_pos(), "hangglider:glider"):set_attach(player, "", {x=0,y=0,z=0}, {x=0,y=0,z=0}) end end canExist = false end end if not canExist then player:set_detach() end end if not canExist then self.object:remove() end end })]] if minetestd and minetestd.services.gravityctl.enabled then minetestd.gravityctl.register_gravity_effect("hangglider", function(player) return hangglider.use[player:get_player_name()] end, function(gravity, player) local vel = player:get_player_velocity() if debug then player:hud_change(hangglider.debug[pname].id, "text", vel.y..', '..player:get_physics_override().gravity..', '..tostring(hangglider.airbreak[pname])) end return ((vel.y + 3)/20) end, 7, 1000 ) end local step_v minetest.register_entity("hangglider:glider", { visual = "mesh", visual_size = {x = 12, y = 12}, mesh = "glider.obj", immortal = true, static_save = false, textures = {"wool_white.png","default_wood.png"}, on_step = function(self, _) local canExist = false if self.object:get_attach() then local player = self.object:get_attach("parent") if player then local pos = player:getpos() local pname = player:get_player_name() if hangglider.use[pname] then local mrn_name = minetest.registered_nodes[minetest.get_node(vector.new(pos.x, pos.y-0.5, pos.z)).name] if mrn_name then if not (mrn_name.walkable or (mrn_name.drowning and mrn_name.drowning == 1)) then canExist = true step_v = player:get_player_velocity().y if step_v < 0 and step_v > -3 then player:set_physics_override({speed=math.abs(step_v/2) + 0.75}) elseif step_v <= -3 then --Cap our fall speed. player:set_physics_override({speed=2.25}) else player:set_physics_override({speed=1}) end if not minetestd then if debug then player:hud_change(hangglider.debug[pname].id, "text", step_v..', '..player:get_physics_override().gravity..', '..tostring(hangglider.airbreak[pname])) end player:set_physics_override({gravity=((step_v + 3)/20)}) end --[[local vel = player:get_player_velocity() if debug then player:hud_change(hangglider.debug[pname].id, "text", vel.y..', '..grav..', '..tostring(hangglider.airbreak[pname])) end player:set_physics_override({gravity = (vel.y + 2.0)/20}) ]]end end end if not canExist then player:set_physics_override({ jump = 1, speed = 1, }) if not minetestd then player:set_physics_override({gravity=1}) end hangglider.use[pname] = false if HUD_Overlay then player:hud_change(hangglider.id[pname], "text", "blank.png") end --hangglider.airbreak[pname] = false end end end if not canExist then self.object:set_detach() self.object:remove() end end }) minetest.register_on_dieplayer(function(player) player:set_physics_override({ gravity = 1, jump = 1, }) hangglider.use[player:get_player_name()] = false end) minetest.register_on_joinplayer(function(player) local pname = player:get_player_name() player:set_physics_override({ gravity = 1, jump = 1, }) hangglider.use[pname] = false if HUD_Overlay then hangglider.id[pname] = player:hud_add({ hud_elem_type = "image", text = "blank.png", position = {x=0, y=0}, scale = {x=-100, y=-100}, alignment = {x=1, y=1}, offset = {x=0, y=0} }) end if debug then hangglider.debug[pname] = {id = player:hud_add({hud_elem_type = "text", position = {x=0.5, y=0.1}, text = "-", number = 0xFF0000}), -- red text -- ht = {50,50,50}, } end --hangglider.airbreak[pname] = false end) minetest.register_on_leaveplayer(function(player) local pname = player:get_player_name() hangglider.use[pname] = nil if HUD_Overlay then hangglider.id[pname] = nil end if debug then hangglider.debug[pname] = nil end --hangglider.airbreak[pname] = nil end) minetest.register_tool("hangglider:hangglider", { description = "Glider", inventory_image = "glider_item.png", stack_max=1, on_use = function(itemstack, player, pointed_thing) if not player then return end local pos = player:get_pos() local pname = player:get_player_name() if minetest.get_node(pos).name == "air" and not hangglider.use[pname] then --Equip minetest.sound_play("bedsheet", {pos=pos, max_hear_distance = 8, gain = 1.0})


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