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area engine wip
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@BuckarooBanzay
BuckarooBanzay committed Apr 11, 2020
1 parent 17c2755 commit 1f8f432
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Showing 7 changed files with 512 additions and 184 deletions.
182 changes: 0 additions & 182 deletions common.lua
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Original file line number Diff line number Diff line change
Expand Up @@ -28,194 +28,12 @@ jumpdrive.calculate_power = function(radius, distance, sourcePos, targetPos)
return 10 * distance * radius
end

jumpdrive.simulate_jump = function(pos, player, show_marker)

local targetPos = jumpdrive.get_meta_pos(pos)

if jumpdrive.check_mapgen(pos) then
return false, "Error: mapgen was active in this area, please try again later for your own safety!"
end

local meta = minetest.get_meta(pos)
local radius = jumpdrive.get_radius(pos)
local distance = vector.distance(pos, targetPos)

local playername = meta:get_string("owner")

if player ~= nil then
playername = player:get_player_name()
end

local radius_vector = {x=radius, y=radius, z=radius}
local source_pos1 = vector.subtract(pos, radius_vector)
local source_pos2 = vector.add(pos, radius_vector)
local target_pos1 = vector.subtract(targetPos, radius_vector)
local target_pos2 = vector.add(targetPos, radius_vector)

local x_overlap = (target_pos1.x <= source_pos2.x and target_pos1.x >= source_pos1.x) or
(target_pos2.x <= source_pos2.x and target_pos2.x >= source_pos1.x)
local y_overlap = (target_pos1.y <= source_pos2.y and target_pos1.y >= source_pos1.y) or
(target_pos2.y <= source_pos2.y and target_pos2.y >= source_pos1.y)
local z_overlap = (target_pos1.z <= source_pos2.z and target_pos1.z >= source_pos1.z) or
(target_pos2.z <= source_pos2.z and target_pos2.z >= source_pos1.z)

if x_overlap and y_overlap and z_overlap then
return false, "Error: jump into itself! extend your jump target"
end

-- load chunk
minetest.get_voxel_manip():read_from_map(target_pos1, target_pos2)

if show_marker then
jumpdrive.show_marker(targetPos, radius, "red")
jumpdrive.show_marker(pos, radius, "green")
end

local msg = nil
local success = true

local blacklisted_pos_list = minetest.find_nodes_in_area(source_pos1, source_pos2, jumpdrive.blacklist)
for _, nodepos in ipairs(blacklisted_pos_list) do
return false, "Can't jump node @ " .. minetest.pos_to_string(nodepos)
end

if minetest.find_node_near(targetPos, radius, "vacuum:vacuum", true) then
msg = "Warning: Jump-target is in vacuum!"
end

if minetest.find_node_near(targetPos, radius, "ignore", true) then
return false, "Warning: Jump-target is in uncharted area"
end

if jumpdrive.is_area_protected(source_pos1, source_pos2, playername) then
return false, "Jump-source is protected!"
end

if jumpdrive.is_area_protected(target_pos1, target_pos2, playername) then
return false, "Jump-target is protected!"
end

local is_empty, empty_msg = jumpdrive.is_area_empty(target_pos1, target_pos2)

if not is_empty then
msg = "Jump-target is obstructed (" .. empty_msg .. ")"
success = false
end

-- check preflight conditions
local preflight_result = jumpdrive.preflight_check(pos, targetPos, radius, playername)

if not preflight_result.success then
-- check failed in customization
msg = "Preflight check failed!"
if preflight_result.message then
msg = preflight_result.message
end
success = false
end

local power_req = jumpdrive.calculate_power(radius, distance, pos, targetPos)
local powerstorage = meta:get_int("powerstorage")

if powerstorage < power_req then
-- not enough power
msg = "Not enough power: required=" .. math.floor(power_req) .. ", actual: " .. powerstorage .. " EU"
success = false
end

return success, msg
end

-- preflight check, for overriding
jumpdrive.preflight_check = function(source, destination, radius, playername)
return { success=true }
end



-- execute jump
jumpdrive.execute_jump = function(pos, player)

local meta = minetest.get_meta(pos)

local radius = jumpdrive.get_radius(pos)
local targetPos = jumpdrive.get_meta_pos(pos)

local distance = vector.distance(pos, targetPos)
local power_req = jumpdrive.calculate_power(radius, distance, pos, targetPos)

local radius_vector = {x=radius, y=radius, z=radius}
local source_pos1 = vector.subtract(pos, radius_vector)
local source_pos2 = vector.add(pos, radius_vector)
local target_pos1 = vector.subtract(targetPos, radius_vector)
local target_pos2 = vector.add(targetPos, radius_vector)

local success, msg = jumpdrive.simulate_jump(pos, player, false)
if not success then
return false, msg
end

-- consume power from storage
local powerstorage = meta:get_int("powerstorage")
meta:set_int("powerstorage", powerstorage - power_req)

local t0 = minetest.get_us_time()

minetest.sound_play("jumpdrive_engine", {
pos = pos,
max_hear_distance = 50,
gain = 0.7,
})

-- actual move
jumpdrive.move(source_pos1, source_pos2, target_pos1, target_pos2)

local t1 = minetest.get_us_time()
local time_micros = t1 - t0

minetest.log("action", "[jumpdrive] jump took " .. time_micros .. " us")

-- show animation in source
minetest.add_particlespawner({
amount = 200,
time = 2,
minpos = source_pos1,
maxpos = source_pos2,
minvel = {x = -2, y = -2, z = -2},
maxvel = {x = 2, y = 2, z = 2},
minacc = {x = -3, y = -3, z = -3},
maxacc = {x = 3, y = 3, z = 3},
minexptime = 0.1,
maxexptime = 5,
minsize = 1,
maxsize = 1,
texture = "spark.png",
glow = 5,
})


-- show animation in target
minetest.add_particlespawner({
amount = 200,
time = 2,
minpos = target_pos1,
maxpos = target_pos2,
minvel = {x = -2, y = -2, z = -2},
maxvel = {x = 2, y = 2, z = 2},
minacc = {x = -3, y = -3, z = -3},
maxacc = {x = 3, y = 3, z = 3},
minexptime = 0.1,
maxexptime = 5,
minsize = 1,
maxsize = 1,
texture = "spark.png",
glow = 5,
})

return true, time_micros
end


jumpdrive.reset_coordinates = function(pos)
local meta = minetest.get_meta(pos)

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