88 lines
2.0 KiB
Rust
88 lines
2.0 KiB
Rust
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use std::rc::Rc;
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use rand::prelude::*;
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use crate::time::Time;
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use crate::world::{World, Terrain, Town};
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use crate::events::{FoundTown, WorldGenesis};
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pub struct GameState {
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pub time: Time,
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pub world: World,
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pub events: Vec<Box<Event>>
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}
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pub struct Event {
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pub time: Time,
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pub effect: Box<dyn Effect>,
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}
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pub trait Effect {
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fn apply(&self, state: &mut GameState);
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fn description(&self) -> String;
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}
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impl Event {
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pub fn description(&self) -> String {
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format!("{}: {}", self.time, self.effect.description())
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}
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}
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impl GameState {
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pub fn new(world: World) -> GameState {
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let mut events = Vec::new();
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events.push(Box::new(Event {
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time: Time { time: 0 },
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effect: Box::new(WorldGenesis),
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}));
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GameState {
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time: Time { time: 0 },
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world: world,
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events: events,
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}
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}
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pub fn add_event(&mut self, event: Event) {
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event.effect.apply(self);
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self.events.push(Box::new(event));
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}
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pub fn step(&mut self) {
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self.time.time += 1;
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}
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pub fn step_n(&mut self, n: u32) {
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for _ in 0..n {
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self.step();
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}
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}
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pub fn step_year(&mut self) {
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for _ in 0..360 {
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self.step();
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}
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}
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pub fn found_town(&mut self) {
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let mut rng = rand::thread_rng();
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loop {
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let x = rng.gen_range(0..self.world.size);
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let y = rng.gen_range(0..self.world.size);
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if
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self.world.map[x][y].terrain == Terrain::Flats ||
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self.world.map[x][y].terrain == Terrain::Hills
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{
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self.add_event(Event {
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time: self.time,
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effect: Box::new(FoundTown {
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x: x,
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y: y,
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town: Rc::new(Town::new()),
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})
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});
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break;
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}
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}
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}
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} |