capturetheflag/mods/ctf/ctf_classes/api.lua

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function ctf_classes.register(cname, def)
assert(not ctf_classes.__classes[cname])
def.name = cname
ctf_classes.__classes[cname] = def
table.insert(ctf_classes.__classes_ordered, def)
def.pros = def.pros or {}
def.cons = def.cons or {}
def.properties = def.properties or {}
if def.properties.can_capture == nil then
def.properties.can_capture = true
end
def.properties.speed = def.properties.speed or 1
def.properties.max_hp = def.properties.max_hp or 20
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end
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local registered_on_changed = {}
function ctf_classes.register_on_changed(func)
table.insert(registered_on_changed, func)
end
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function ctf_classes.set_skin(player, color, class)
player:set_properties({
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textures = {"ctf_classes_skin_" .. class.name .. "_" .. (color or "blue") .. ".png"}
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})
end
function ctf_classes.get(player)
if type(player) == "string" then
player = minetest.get_player_by_name(player)
end
local cname = player:get_meta():get("ctf_classes:class") or "knight"
return ctf_classes.__classes[cname]
end
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function ctf_classes.set(player, new_name)
assert(type(new_name) == "string")
local new = ctf_classes.__classes[new_name]
assert(new)
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local meta = player:get_meta()
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local old_name = meta:get("ctf_classes:class")
meta:set_string("ctf_classes:class", new_name)
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ctf_classes.update(player)
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if old_name == nil or old_name ~= new_name then
local old = old_name and ctf_classes.__classes[old_name]
for i=1, #registered_on_changed do
registered_on_changed[i](player, old, new)
end
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end
end
local function set_max_hp(player, max_hp)
local cur_hp = player:get_hp()
local old_max = player:get_properties().hp_max
local new_hp = cur_hp + max_hp - old_max
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player:set_properties({
hp_max = max_hp
})
if new_hp > max_hp then
minetest.log("error", string.format("New hp %d is larger than new max %d, old max is %d", new_hp, max_hp, old_max))
new_hp = max_hp
end
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if cur_hp > max_hp then
player:set_hp(max_hp)
elseif new_hp > cur_hp then
player:set_hp(new_hp)
end
end
function ctf_classes.update(player)
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local name = player:get_player_name()
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local class = ctf_classes.get(player)
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local color = ctf_colors.get_color(ctf.player(name)).text
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set_max_hp(player, class.properties.max_hp)
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ctf_classes.set_skin(player, color, class)
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local speed = class.properties.speed
if ctf_flag.has_flag(name) and speed > 0.9 then
speed = 0.9
end
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physics.set(player:get_player_name(), "ctf_classes:speed", {
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speed = speed,
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})
end
local function sqdist(a, b)
local x = a.x - b.x
local y = a.y - b.y
local z = a.z - b.z
return x*x + y*y + z*z
end
local function get_flag_pos(player)
local tplayer = ctf.player(player:get_player_name())
if not tplayer or not tplayer.team then
return nil
end
local team = ctf.team(tplayer.team)
if team and team.flags[1] then
return vector.new(team.flags[1])
end
return nil
end
function ctf_classes.can_change(player)
local flag_pos = get_flag_pos(player)
if not flag_pos then
return false
end
return sqdist(player:get_pos(), flag_pos) < 25
end