398 lines
11 KiB
Rust
398 lines
11 KiB
Rust
use crate::{
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game_log::GameLog, CombatStats, InBackpack, Map, Name, Player, Position, State, Viewshed,
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};
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use rltk::{Point, Rltk, VirtualKeyCode, RGB};
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use specs::prelude::*;
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pub fn draw_ui(ecs: &World, ctx: &mut Rltk) {
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ctx.draw_box(
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0,
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43,
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79,
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6,
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RGB::named(rltk::WHITE),
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RGB::named(rltk::BLACK),
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);
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let combat_stats = ecs.read_storage::<CombatStats>();
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let players = ecs.read_storage::<Player>();
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// Display player health
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for (_player, stats) in (&players, &combat_stats).join() {
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let health = format!(" HP: {} / {} ", stats.hp, stats.max_hp);
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ctx.print_color(
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12,
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43,
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RGB::named(rltk::YELLOW),
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RGB::named(rltk::BLACK),
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&health,
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);
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ctx.draw_bar_horizontal(
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29,
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43,
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51,
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stats.hp,
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stats.max_hp,
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RGB::named(rltk::RED),
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RGB::named(rltk::BLACK),
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);
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}
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// Display logs
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let log = ecs.fetch::<GameLog>();
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let mut y = 44;
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for s in log.entries.iter().rev() {
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if y < 49 {
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ctx.print(2, y, s);
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}
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y += 1;
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}
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// Mouse cursor
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let mouse_pos = ctx.mouse_pos();
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ctx.set_bg(mouse_pos.0, mouse_pos.1, RGB::named(rltk::MAGENTA));
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draw_tooltips(ecs, ctx);
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}
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fn draw_tooltips(ecs: &World, ctx: &mut Rltk) {
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let map = ecs.fetch::<Map>();
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let names = ecs.read_storage::<Name>();
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let positions = ecs.read_storage::<Position>();
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let mouse_pos = ctx.mouse_pos();
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if mouse_pos.0 >= map.width || mouse_pos.1 >= map.height {
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return;
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}
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let mut tooltip: Vec<String> = Vec::new();
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for (name, position) in (&names, &positions).join() {
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let idx = map.xy_idx(position.x, position.y);
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if position.x == mouse_pos.0 && position.y == mouse_pos.1 && map.visible_tiles[idx] {
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tooltip.push(name.name.to_string());
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}
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}
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if !tooltip.is_empty() {
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let mut width: i32 = 0;
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for s in tooltip.iter() {
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if width < s.len() as i32 {
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width = s.len() as i32;
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}
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}
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width += 3;
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if mouse_pos.0 > 40 {
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let arrow_pos = Point::new(mouse_pos.0 - 2, mouse_pos.1);
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let left_x = mouse_pos.0 - width;
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let mut y = mouse_pos.1;
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for s in tooltip.iter() {
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ctx.print_color(
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left_x,
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y,
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RGB::named(rltk::WHITE),
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RGB::named(rltk::GREY),
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s,
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);
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let padding = (width - s.len() as i32) - 1;
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for i in 0..padding {
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ctx.print_color(
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arrow_pos.x - i,
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y,
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RGB::named(rltk::WHITE),
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RGB::named(rltk::GREY),
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&" ".to_string(),
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);
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}
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y += 1;
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}
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ctx.print_color(
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arrow_pos.x,
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arrow_pos.y,
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RGB::named(rltk::WHITE),
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RGB::named(rltk::GREY),
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&"->".to_string(),
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);
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} else {
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let arrow_pos = Point::new(mouse_pos.0 + 1, mouse_pos.1);
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let left_x = mouse_pos.0 + 3;
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let mut y = mouse_pos.1;
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for s in tooltip.iter() {
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ctx.print_color(
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left_x + 1,
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y,
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RGB::named(rltk::WHITE),
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RGB::named(rltk::GREY),
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s,
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);
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let padding = (width - s.len() as i32) - 1;
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for i in 0..padding {
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ctx.print_color(
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arrow_pos.x + 1 + i,
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y,
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RGB::named(rltk::WHITE),
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RGB::named(rltk::GREY),
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&" ".to_string(),
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);
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}
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y += 1;
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}
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ctx.print_color(
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arrow_pos.x,
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arrow_pos.y,
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RGB::named(rltk::WHITE),
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RGB::named(rltk::GREY),
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&"<-".to_string(),
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);
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}
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}
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}
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#[derive(PartialEq, Copy, Clone)]
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pub enum ItemMenuResult {
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Cancel,
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NoResponse,
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Selected,
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}
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pub fn show_inventory(gs: &mut State, ctx: &mut Rltk) -> (ItemMenuResult, Option<Entity>) {
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let player_entity = gs.ecs.fetch::<Entity>();
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let names = gs.ecs.read_storage::<Name>();
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let backpack = gs.ecs.read_storage::<InBackpack>();
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let entities = gs.ecs.entities();
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let inventory = (&backpack, &names)
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.join()
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.filter(|item| item.0.owner == *player_entity);
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let count = inventory.count();
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let mut y = (25 - (count / 2)) as i32;
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ctx.draw_box(
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15,
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y - 2,
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31,
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(count + 3) as i32,
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RGB::named(rltk::WHITE),
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RGB::named(rltk::BLACK),
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);
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ctx.print_color(
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18,
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y - 2,
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RGB::named(rltk::YELLOW),
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RGB::named(rltk::BLACK),
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"Inventory",
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);
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ctx.print_color(
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18,
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y + count as i32 + 1,
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RGB::named(rltk::YELLOW),
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RGB::named(rltk::BLACK),
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"ESCAPE to cancel",
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);
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let mut equippable: Vec<Entity> = Vec::new();
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let mut j = 0;
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for (entity, _pack, name) in (&entities, &backpack, &names)
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.join()
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.filter(|item| item.1.owner == *player_entity)
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{
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ctx.set(
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17,
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y,
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RGB::named(rltk::WHITE),
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RGB::named(rltk::BLACK),
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rltk::to_cp437('('),
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);
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ctx.set(
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18,
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y,
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RGB::named(rltk::YELLOW),
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RGB::named(rltk::BLACK),
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97 + j as rltk::FontCharType,
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);
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ctx.set(
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19,
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y,
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RGB::named(rltk::WHITE),
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RGB::named(rltk::BLACK),
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rltk::to_cp437(')'),
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);
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ctx.print(21, y, &name.name.to_string());
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equippable.push(entity);
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y += 1;
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j += 1;
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}
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match ctx.key {
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None => (ItemMenuResult::NoResponse, None),
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Some(key) => match key {
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VirtualKeyCode::Escape => (ItemMenuResult::Cancel, None),
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_ => {
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let selection = rltk::letter_to_option(key);
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if selection > -1 && selection < count as i32 {
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return (
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ItemMenuResult::Selected,
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Some(equippable[selection as usize]),
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);
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}
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(ItemMenuResult::NoResponse, None)
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}
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},
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}
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}
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pub fn drop_item_menu(gs: &mut State, ctx: &mut Rltk) -> (ItemMenuResult, Option<Entity>) {
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let player_entity = gs.ecs.fetch::<Entity>();
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let names = gs.ecs.read_storage::<Name>();
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let backpack = gs.ecs.read_storage::<InBackpack>();
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let entities = gs.ecs.entities();
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let inventory = (&backpack, &names)
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.join()
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.filter(|item| item.0.owner == *player_entity);
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let count = inventory.count();
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let mut y = (25 - (count / 2)) as i32;
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ctx.draw_box(
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15,
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y - 2,
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31,
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(count + 3) as i32,
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RGB::named(rltk::WHITE),
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RGB::named(rltk::BLACK),
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);
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ctx.print_color(
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18,
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y - 2,
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RGB::named(rltk::YELLOW),
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RGB::named(rltk::BLACK),
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"Drop Which Item?",
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);
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ctx.print_color(
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18,
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y + count as i32 + 1,
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RGB::named(rltk::YELLOW),
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RGB::named(rltk::BLACK),
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"ESCAPE to cancel",
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);
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let mut equippable: Vec<Entity> = Vec::new();
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let mut j = 0;
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for (entity, _pack, name) in (&entities, &backpack, &names)
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.join()
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.filter(|item| item.1.owner == *player_entity)
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{
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ctx.set(
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17,
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y,
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RGB::named(rltk::WHITE),
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RGB::named(rltk::BLACK),
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rltk::to_cp437('('),
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);
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ctx.set(
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18,
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y,
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RGB::named(rltk::YELLOW),
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RGB::named(rltk::BLACK),
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97 + j as rltk::FontCharType,
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);
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ctx.set(
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19,
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y,
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RGB::named(rltk::WHITE),
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RGB::named(rltk::BLACK),
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rltk::to_cp437(')'),
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);
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ctx.print(21, y, &name.name.to_string());
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equippable.push(entity);
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y += 1;
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j += 1;
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}
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match ctx.key {
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None => (ItemMenuResult::NoResponse, None),
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Some(key) => match key {
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VirtualKeyCode::Escape => (ItemMenuResult::Cancel, None),
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_ => {
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let selection = rltk::letter_to_option(key);
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if selection > -1 && selection < count as i32 {
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return (
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ItemMenuResult::Selected,
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Some(equippable[selection as usize]),
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);
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}
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(ItemMenuResult::NoResponse, None)
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}
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},
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}
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}
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pub fn ranged_target(
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gs: &mut State,
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ctx: &mut Rltk,
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range: i32,
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) -> (ItemMenuResult, Option<Point>) {
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let player_entity = gs.ecs.fetch::<Entity>();
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let player_pos = gs.ecs.fetch::<Point>();
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let viewsheds = gs.ecs.read_storage::<Viewshed>();
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ctx.print_color(
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5,
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0,
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RGB::named(rltk::YELLOW),
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RGB::named(rltk::BLACK),
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"Select Target:",
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);
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// Highlight available target cells
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let mut available_cells = Vec::new();
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let visible = viewsheds.get(*player_entity);
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if let Some(visible) = visible {
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for idx in visible.visible_tiles.iter() {
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let distance = rltk::DistanceAlg::Pythagoras.distance2d(*player_pos, *idx);
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if distance <= range as f32 {
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ctx.set_bg(idx.x, idx.y, RGB::named(rltk::BLUE));
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available_cells.push(idx);
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}
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}
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} else {
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return (ItemMenuResult::Cancel, None);
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}
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// Draw mouse cursor
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let mouse_pos = ctx.mouse_pos();
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let mut valid_target = false;
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for idx in available_cells.iter() {
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if idx.x == mouse_pos.0 && idx.y == mouse_pos.1 {
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valid_target = true;
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}
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}
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if valid_target {
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ctx.set_bg(mouse_pos.0, mouse_pos.1, RGB::named(rltk::CYAN));
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if ctx.left_click {
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return (
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ItemMenuResult::Selected,
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Some(Point::new(mouse_pos.0, mouse_pos.1)),
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);
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}
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} else {
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ctx.set_bg(mouse_pos.0, mouse_pos.1, RGB::named(rltk::RED));
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if ctx.left_click {
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return (ItemMenuResult::Cancel, None);
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}
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}
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(ItemMenuResult::NoResponse, None)
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}
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