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use ggez::event::KeyCode;
use ggez::graphics::{spritebatch::SpriteBatch, DrawParam, Rect};
use ggez::nalgebra::{Point2, Vector2};
use ggez::timer::check_update_time;
use ggez::Context;
use std::collections::HashMap;
use crate::constants;
pub struct Player {
pub position: Point2<f32>,
state: PlayerState,
tile: Rect,
animation: Vec<(u32, Rect)>,
animations: HashMap<PlayerState, Vec<(u32, Rect)>>,
}
impl Player {
pub fn new() -> Player {
let mut animations = HashMap::new();
let mut idle = Vec::new();
idle.push((1, Rect::new(0.0, 0.0, 0.2, 0.2)));
idle.push((1, Rect::new(0.2, 0.0, 0.2, 0.2)));
let mut moving_right = Vec::new();
moving_right.push((1, Rect::new(0.4, 0.0, 0.2, 0.2)));
moving_right.push((1, Rect::new(0.6, 0.0, 0.2, 0.2)));
animations.insert(PlayerState::Idle, idle);
animations.insert(PlayerState::MovingRight, moving_right);
Player {
position: Point2::new(0.0, 0.0),
state: PlayerState::Idle,
tile: Rect::zero(),
animation: Vec::new(),
animations,
}
}
pub fn draw(&self, spritebatch: &mut SpriteBatch) {
let draw_param = DrawParam::default()
.src(self.tile)
.dest(self.position)
.scale(Vector2::new(constants::TILE_SCALE, constants::TILE_SCALE));
spritebatch.add(draw_param);
}
pub fn update(&mut self, context: &mut Context) {
self.move_position();
self.find_tile(context);
}
fn move_position(&mut self) {
match self.state {
PlayerState::MovingUp => self.position.y -= constants::PLAYER_SPEED,
PlayerState::MovingUpLeft => {
self.position.x -= constants::PLAYER_SPEED / 2.0_f32.sqrt();
self.position.y -= constants::PLAYER_SPEED / 2.0_f32.sqrt();
}
PlayerState::MovingUpRight => {
self.position.x += constants::PLAYER_SPEED / 2.0_f32.sqrt();
self.position.y -= constants::PLAYER_SPEED / 2.0_f32.sqrt();
}
PlayerState::MovingLeft => self.position.x -= constants::PLAYER_SPEED,
PlayerState::MovingDown => self.position.y += constants::PLAYER_SPEED,
PlayerState::MovingDownLeft => {
self.position.x -= constants::PLAYER_SPEED / 2.0_f32.sqrt();
self.position.y += constants::PLAYER_SPEED / 2.0_f32.sqrt();
}
PlayerState::MovingDownRight => {
self.position.x += constants::PLAYER_SPEED / 2.0_f32.sqrt();
self.position.y += constants::PLAYER_SPEED / 2.0_f32.sqrt();
}
PlayerState::MovingRight => self.position.x += constants::PLAYER_SPEED,
PlayerState::Idle => (),
}
}
fn find_tile(&mut self, context: &mut Context) {
self.animation = match self.animations.get(&self.state) {
Some(animation) => animation.to_vec(),
None => self.animations.get(&PlayerState::Idle).unwrap().to_vec(),
};
let index = match self.animation.iter().position(|a| a.1 == self.tile) {
Some(index) => {
if check_update_time(context, self.animation[index].0) {
index + 1
} else {
index
}
}
None => 0,
};
if index == self.animation.len() {
self.tile = self.animation[0].1;
} else {
self.tile = self.animation[index].1;
}
}
pub fn give_key_down(&mut self, keycode: KeyCode) {
let original_state = self.state.clone();
self.state = match keycode {
KeyCode::W => match original_state {
PlayerState::MovingLeft => PlayerState::MovingUpLeft,
PlayerState::MovingRight => PlayerState::MovingUpRight,
_ => PlayerState::MovingUp,
},
KeyCode::A => match original_state {
PlayerState::MovingUp => PlayerState::MovingUpLeft,
PlayerState::MovingDown => PlayerState::MovingDownLeft,
_ => PlayerState::MovingLeft,
},
KeyCode::S => match original_state {
PlayerState::MovingLeft => PlayerState::MovingDownLeft,
PlayerState::MovingRight => PlayerState::MovingDownRight,
_ => PlayerState::MovingDown,
},
KeyCode::D => match original_state {
PlayerState::MovingUp => PlayerState::MovingUpRight,
PlayerState::MovingDown => PlayerState::MovingDownRight,
_ => PlayerState::MovingRight,
},
_ => original_state,
}
}
pub fn give_key_up(&mut self, keycode: KeyCode) {
let original_state = self.state.clone();
self.state = match keycode {
KeyCode::W => match original_state {
PlayerState::MovingUpLeft => PlayerState::MovingLeft,
PlayerState::MovingUpRight => PlayerState::MovingRight,
_ => PlayerState::Idle,
},
KeyCode::A => match original_state {
PlayerState::MovingUpLeft => PlayerState::MovingUp,
PlayerState::MovingDownLeft => PlayerState::MovingDown,
_ => PlayerState::Idle,
},
KeyCode::S => match original_state {
PlayerState::MovingDownLeft => PlayerState::MovingLeft,
PlayerState::MovingDownRight => PlayerState::MovingRight,
_ => PlayerState::Idle,
},
KeyCode::D => match original_state {
PlayerState::MovingUpRight => PlayerState::MovingUp,
PlayerState::MovingDownRight => PlayerState::MovingDown,
_ => PlayerState::Idle,
},
_ => original_state,
}
}
}
impl Default for Player {
fn default() -> Self {
Player::new()
}
}
#[derive(Clone, Hash, Eq, PartialEq)]
enum PlayerState {
Idle,
MovingUp,
MovingDown,
MovingLeft,
MovingRight,
MovingUpLeft,
MovingUpRight,
MovingDownLeft,
MovingDownRight,
}
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