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use std::fmt;
use super::constants::*;
use super::geometry::Point;
#[derive(Debug, Clone, Copy, PartialEq, Eq)]
pub enum Command {
Nothing,
Build(Point, BuildingType),
IronCurtain
}
impl fmt::Display for Command {
fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
match *self {
Command::Nothing => write!(f, ""),
Command::Build(p, b) => write!(f, "{},{},{}", p.x(), p.y(), b as u8),
Command::IronCurtain => write!(f, "0,0,5")
}
}
}
impl Command {
pub fn cant_build_yet(self, energy: u16) -> bool {
use self::Command::*;
match self {
Nothing => false,
Build(_, b) => b.cant_build_yet(energy),
IronCurtain => energy < IRON_CURTAIN_PRICE
}
}
}
#[repr(u8)]
#[derive(Debug, Clone, Copy, PartialEq, Eq)]
pub enum BuildingType {
Defence = 0,
Attack = 1,
Energy = 2,
Tesla = 4,
}
impl BuildingType {
pub fn all() -> [BuildingType; NUMBER_OF_BUILDING_TYPES] {
use self::BuildingType::*;
[Defence, Attack, Energy, Tesla]
}
pub fn from_u8(id: u8) -> Option<BuildingType> {
use std::mem;
if id <= 4 && id != 3 { Some(unsafe { mem::transmute(id) }) } else { None }
}
pub fn cant_build_yet(self, energy: u16) -> bool {
use self::BuildingType::*;
let required = match self {
Defence => DEFENCE_PRICE,
Attack => MISSILE_PRICE,
Energy => ENERGY_PRICE,
Tesla => TESLA_PRICE
};
energy < required
}
}
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