roguelike-game/src/gui.rs

742 lines
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2021-12-10 20:16:48 -05:00
use rltk::{Point, Rltk, VirtualKeyCode, RGB};
use specs::prelude::*;
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use crate::components::{
CombatStats, HungerClock, HungerState, InBackpack, Name, Player, Position, Viewshed,
};
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use crate::game_log::GameLog;
use crate::rex_assets::RexAssets;
use crate::{camera, Equipped, Hidden, Map, RunState, State};
pub fn draw_ui(ecs: &World, ctx: &mut Rltk) {
ctx.draw_box(
0,
43,
79,
6,
RGB::named(rltk::WHITE),
RGB::named(rltk::BLACK),
);
let combat_stats = ecs.read_storage::<CombatStats>();
let players = ecs.read_storage::<Player>();
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let hunger = ecs.read_storage::<HungerClock>();
// Display player health
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for (_player, stats, hc) in (&players, &combat_stats, &hunger).join() {
let health = format!(" HP: {} / {} ", stats.hp, stats.max_hp);
ctx.print_color(
12,
43,
RGB::named(rltk::YELLOW),
RGB::named(rltk::BLACK),
&health,
);
ctx.draw_bar_horizontal(
29,
43,
51,
stats.hp,
stats.max_hp,
RGB::named(rltk::RED),
RGB::named(rltk::BLACK),
);
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match hc.state {
HungerState::WellFed => ctx.print_color(
71,
42,
RGB::named(rltk::GREEN),
RGB::named(rltk::BLACK),
"Well Fed",
),
HungerState::Normal => {}
HungerState::Hungry => ctx.print_color(
71,
42,
RGB::named(rltk::ORANGE),
RGB::named(rltk::BLACK),
"Hungry",
),
HungerState::Starving => ctx.print_color(
71,
42,
RGB::named(rltk::RED),
RGB::named(rltk::BLACK),
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"Starving",
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),
}
}
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let map = ecs.fetch::<Map>();
let depth = format!("Depth: {}", map.depth);
ctx.print_color(
2,
43,
RGB::named(rltk::YELLOW),
RGB::named(rltk::BLACK),
&depth,
);
// Display logs
let log = ecs.fetch::<GameLog>();
let mut y = 44;
for s in log.entries.iter().rev() {
if y < 49 {
ctx.print(2, y, s);
}
y += 1;
}
// Mouse cursor
let mouse_pos = ctx.mouse_pos();
ctx.set_bg(mouse_pos.0, mouse_pos.1, RGB::named(rltk::MAGENTA));
draw_tooltips(ecs, ctx);
}
fn draw_tooltips(ecs: &World, ctx: &mut Rltk) {
let (min_x, _max_x, min_y, _max_y) = camera::get_screen_bounds(ecs, ctx);
let map = ecs.fetch::<Map>();
let names = ecs.read_storage::<Name>();
let positions = ecs.read_storage::<Position>();
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let hidden = ecs.read_storage::<Hidden>();
let mouse_pos = ctx.mouse_pos();
let mut mouse_map_pos = mouse_pos;
mouse_map_pos.0 += min_x;
mouse_map_pos.1 += min_y;
if mouse_map_pos.0 >= map.width - 1
|| mouse_map_pos.1 >= map.height - 1
|| mouse_map_pos.0 < 1
|| mouse_map_pos.1 < 1
{
return;
}
if !map.visible_tiles[map.xy_idx(mouse_map_pos.0, mouse_map_pos.1)] {
return;
}
let mut tooltip: Vec<String> = Vec::new();
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for (name, position, _hidden) in (&names, &positions, !&hidden).join() {
if position.x == mouse_map_pos.0 && position.y == mouse_map_pos.1 {
tooltip.push(name.name.to_string());
}
}
if !tooltip.is_empty() {
let mut width: i32 = 0;
for s in tooltip.iter() {
if width < s.len() as i32 {
width = s.len() as i32;
}
}
width += 3;
if mouse_pos.0 > 40 {
let arrow_pos = Point::new(mouse_pos.0 - 2, mouse_pos.1);
let left_x = mouse_pos.0 - width;
let mut y = mouse_pos.1;
for s in tooltip.iter() {
ctx.print_color(
left_x,
y,
RGB::named(rltk::WHITE),
RGB::named(rltk::GREY),
s,
);
let padding = (width - s.len() as i32) - 1;
for i in 0..padding {
ctx.print_color(
arrow_pos.x - i,
y,
RGB::named(rltk::WHITE),
RGB::named(rltk::GREY),
&" ".to_string(),
);
}
y += 1;
}
ctx.print_color(
arrow_pos.x,
arrow_pos.y,
RGB::named(rltk::WHITE),
RGB::named(rltk::GREY),
&"->".to_string(),
);
} else {
let arrow_pos = Point::new(mouse_pos.0 + 1, mouse_pos.1);
let left_x = mouse_pos.0 + 3;
let mut y = mouse_pos.1;
for s in tooltip.iter() {
ctx.print_color(
left_x + 1,
y,
RGB::named(rltk::WHITE),
RGB::named(rltk::GREY),
s,
);
let padding = (width - s.len() as i32) - 1;
for i in 0..padding {
ctx.print_color(
arrow_pos.x + 1 + i,
y,
RGB::named(rltk::WHITE),
RGB::named(rltk::GREY),
&" ".to_string(),
);
}
y += 1;
}
ctx.print_color(
arrow_pos.x,
arrow_pos.y,
RGB::named(rltk::WHITE),
RGB::named(rltk::GREY),
&"<-".to_string(),
);
}
}
}
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#[derive(PartialEq, Copy, Clone)]
pub enum ItemMenuResult {
Cancel,
NoResponse,
Selected,
}
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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>();
let names = gs.ecs.read_storage::<Name>();
let backpack = gs.ecs.read_storage::<InBackpack>();
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let entities = gs.ecs.entities();
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let inventory = (&backpack, &names)
.join()
.filter(|item| item.0.owner == *player_entity);
let count = inventory.count();
let mut y = (25 - (count / 2)) as i32;
ctx.draw_box(
15,
y - 2,
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31,
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(count + 3) as i32,
RGB::named(rltk::WHITE),
RGB::named(rltk::BLACK),
);
ctx.print_color(
18,
y - 2,
RGB::named(rltk::YELLOW),
RGB::named(rltk::BLACK),
"Inventory",
);
ctx.print_color(
18,
y + count as i32 + 1,
RGB::named(rltk::YELLOW),
RGB::named(rltk::BLACK),
"ESCAPE to cancel",
);
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let mut equippable: Vec<Entity> = Vec::new();
let mut j = 0;
#[allow(clippy::explicit_counter_loop)]
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for (entity, _pack, name) in (&entities, &backpack, &names)
.join()
.filter(|item| item.1.owner == *player_entity)
{
ctx.set(
17,
y,
RGB::named(rltk::WHITE),
RGB::named(rltk::BLACK),
rltk::to_cp437('('),
);
ctx.set(
18,
y,
RGB::named(rltk::YELLOW),
RGB::named(rltk::BLACK),
97 + j as rltk::FontCharType,
);
ctx.set(
19,
y,
RGB::named(rltk::WHITE),
RGB::named(rltk::BLACK),
rltk::to_cp437(')'),
);
ctx.print(21, y, &name.name.to_string());
equippable.push(entity);
y += 1;
j += 1;
}
match ctx.key {
None => (ItemMenuResult::NoResponse, None),
Some(key) => match key {
VirtualKeyCode::Escape => (ItemMenuResult::Cancel, None),
_ => {
let selection = rltk::letter_to_option(key);
if selection > -1 && selection < count as i32 {
return (
ItemMenuResult::Selected,
Some(equippable[selection as usize]),
);
}
(ItemMenuResult::NoResponse, None)
}
},
}
}
pub fn drop_item_menu(gs: &mut State, ctx: &mut Rltk) -> (ItemMenuResult, Option<Entity>) {
let player_entity = gs.ecs.fetch::<Entity>();
let names = gs.ecs.read_storage::<Name>();
let backpack = gs.ecs.read_storage::<InBackpack>();
let entities = gs.ecs.entities();
let inventory = (&backpack, &names)
.join()
.filter(|item| item.0.owner == *player_entity);
let count = inventory.count();
let mut y = (25 - (count / 2)) as i32;
ctx.draw_box(
15,
y - 2,
31,
(count + 3) as i32,
RGB::named(rltk::WHITE),
RGB::named(rltk::BLACK),
);
ctx.print_color(
18,
y - 2,
RGB::named(rltk::YELLOW),
RGB::named(rltk::BLACK),
"Drop Which Item?",
);
ctx.print_color(
18,
y + count as i32 + 1,
RGB::named(rltk::YELLOW),
RGB::named(rltk::BLACK),
"ESCAPE to cancel",
);
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let mut equippable: Vec<Entity> = Vec::new();
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let mut j = 0;
#[allow(clippy::explicit_counter_loop)]
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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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{
ctx.set(
17,
y,
RGB::named(rltk::WHITE),
RGB::named(rltk::BLACK),
rltk::to_cp437('('),
);
ctx.set(
18,
y,
RGB::named(rltk::YELLOW),
RGB::named(rltk::BLACK),
97 + j as rltk::FontCharType,
);
ctx.set(
19,
y,
RGB::named(rltk::WHITE),
RGB::named(rltk::BLACK),
rltk::to_cp437(')'),
);
ctx.print(21, y, &name.name.to_string());
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equippable.push(entity);
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y += 1;
j += 1;
}
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),
_ => {
let selection = rltk::letter_to_option(key);
if selection > -1 && selection < count as i32 {
return (
ItemMenuResult::Selected,
Some(equippable[selection as usize]),
);
}
(ItemMenuResult::NoResponse, None)
}
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},
}
}
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pub fn remove_item_menu(gs: &mut State, ctx: &mut Rltk) -> (ItemMenuResult, Option<Entity>) {
let player_entity = gs.ecs.fetch::<Entity>();
let names = gs.ecs.read_storage::<Name>();
let backpack = gs.ecs.read_storage::<Equipped>();
let entities = gs.ecs.entities();
let inventory = (&backpack, &names)
.join()
.filter(|item| item.0.owner == *player_entity);
let count = inventory.count();
let mut y = (25 - (count / 2)) as i32;
ctx.draw_box(
15,
y - 2,
31,
(count + 3) as i32,
RGB::named(rltk::WHITE),
RGB::named(rltk::BLACK),
);
ctx.print_color(
18,
y - 2,
RGB::named(rltk::YELLOW),
RGB::named(rltk::BLACK),
"Remove Which Item?",
);
ctx.print_color(
18,
y + count as i32 + 1,
RGB::named(rltk::YELLOW),
RGB::named(rltk::BLACK),
"ESCAPE to cancel",
);
let mut equippable: Vec<Entity> = Vec::new();
let mut j = 0;
#[allow(clippy::explicit_counter_loop)]
for (entity, _pack, name) in (&entities, &backpack, &names)
.join()
.filter(|item| item.1.owner == *player_entity)
{
ctx.set(
17,
y,
RGB::named(rltk::WHITE),
RGB::named(rltk::BLACK),
rltk::to_cp437('('),
);
ctx.set(
18,
y,
RGB::named(rltk::YELLOW),
RGB::named(rltk::BLACK),
97 + j as rltk::FontCharType,
);
ctx.set(
19,
y,
RGB::named(rltk::WHITE),
RGB::named(rltk::BLACK),
rltk::to_cp437(')'),
);
ctx.print(21, y, &name.name.to_string());
equippable.push(entity);
y += 1;
j += 1;
}
match ctx.key {
None => (ItemMenuResult::NoResponse, None),
Some(key) => match key {
VirtualKeyCode::Escape => (ItemMenuResult::Cancel, None),
_ => {
let selection = rltk::letter_to_option(key);
if selection > -1 && selection < count as i32 {
return (
ItemMenuResult::Selected,
Some(equippable[selection as usize]),
);
}
(ItemMenuResult::NoResponse, None)
}
},
}
}
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pub fn ranged_target(
gs: &mut State,
ctx: &mut Rltk,
range: i32,
) -> (ItemMenuResult, Option<Point>) {
let (min_x, max_x, min_y, max_y) = camera::get_screen_bounds(&gs.ecs, ctx);
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let player_entity = gs.ecs.fetch::<Entity>();
let player_pos = gs.ecs.fetch::<Point>();
let viewsheds = gs.ecs.read_storage::<Viewshed>();
ctx.print_color(
5,
0,
RGB::named(rltk::YELLOW),
RGB::named(rltk::BLACK),
"Select Target:",
);
// Highlight available target cells
let mut available_cells = Vec::new();
if let Some(visible) = viewsheds.get(*player_entity) {
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for idx in visible.visible_tiles.iter() {
let distance = rltk::DistanceAlg::Pythagoras.distance2d(*player_pos, *idx);
if distance <= range as f32 {
let screen_x = idx.x - min_x;
let screen_y = idx.y - min_y;
if screen_x > 1
&& screen_x < (max_x - min_x) - 1
&& screen_y > 1
&& screen_y < (max_y - min_y) - 1
{
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ctx.set_bg(screen_x, screen_y, RGB::named(rltk::BLUE));
available_cells.push(idx);
}
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}
}
} else {
return (ItemMenuResult::Cancel, None);
}
// Draw mouse cursor
let mouse_pos = ctx.mouse_pos();
let mut mouse_map_pos = mouse_pos;
mouse_map_pos.0 += min_x;
mouse_map_pos.1 += min_y;
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let mut valid_target = false;
for idx in available_cells.iter() {
if idx.x == mouse_map_pos.0 && idx.y == mouse_map_pos.1 {
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valid_target = true;
}
}
if valid_target {
ctx.set_bg(mouse_pos.0, mouse_pos.1, RGB::named(rltk::CYAN));
if ctx.left_click {
return (
ItemMenuResult::Selected,
Some(Point::new(mouse_map_pos.0, mouse_map_pos.1)),
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);
}
} else {
ctx.set_bg(mouse_pos.0, mouse_pos.1, RGB::named(rltk::RED));
if ctx.left_click {
return (ItemMenuResult::Cancel, None);
}
}
(ItemMenuResult::NoResponse, None)
}
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#[derive(PartialEq, Copy, Clone)]
pub enum MainMenuSelection {
NewGame,
LoadGame,
Quit,
}
#[derive(PartialEq, Copy, Clone)]
pub enum MainMenuResult {
NoSelection { selected: MainMenuSelection },
Selected { selected: MainMenuSelection },
}
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pub fn main_menu(gs: &mut State, ctx: &mut Rltk) -> MainMenuResult {
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let save_exists = crate::saveload_system::does_save_exist();
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let runstate = gs.ecs.fetch::<RunState>();
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let assets = gs.ecs.fetch::<RexAssets>();
ctx.render_xp_sprite(&assets.menu, 0, 0);
ctx.draw_box_double(
24,
18,
31,
10,
RGB::named(rltk::WHEAT),
RGB::named(rltk::BLACK),
);
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ctx.print_color_centered(
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20,
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RGB::named(rltk::YELLOW),
RGB::named(rltk::BLACK),
"Rust Roguelike Tutorial",
);
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ctx.print_color_centered(
21,
RGB::named(rltk::CYAN),
RGB::named(rltk::BLACK),
"by Herbert Wolverson",
);
ctx.print_color_centered(
22,
RGB::named(rltk::GRAY),
RGB::named(rltk::BLACK),
"Use Up/Down Arrows and Enter",
);
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let mut y = 24;
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if let RunState::MainMenu {
menu_selection: selection,
} = *runstate
{
if selection == MainMenuSelection::NewGame {
ctx.print_color_centered(
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y,
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RGB::named(rltk::MAGENTA),
RGB::named(rltk::BLACK),
"Begin New Game",
);
} else {
ctx.print_color_centered(
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y,
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RGB::named(rltk::WHITE),
RGB::named(rltk::BLACK),
"Begin New Game",
);
}
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y += 1;
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if save_exists {
if selection == MainMenuSelection::LoadGame {
ctx.print_color_centered(
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y,
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RGB::named(rltk::MAGENTA),
RGB::named(rltk::BLACK),
"Load Game",
);
} else {
ctx.print_color_centered(
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y,
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RGB::named(rltk::WHITE),
RGB::named(rltk::BLACK),
"Load Game",
);
}
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y += 1;
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}
if selection == MainMenuSelection::Quit {
ctx.print_color_centered(
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y,
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RGB::named(rltk::MAGENTA),
RGB::named(rltk::BLACK),
"Quit",
);
} else {
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ctx.print_color_centered(y, RGB::named(rltk::WHITE), RGB::named(rltk::BLACK), "Quit");
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}
return match ctx.key {
None => MainMenuResult::NoSelection {
selected: selection,
},
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Some(key) => match key {
VirtualKeyCode::Escape => MainMenuResult::NoSelection {
selected: MainMenuSelection::Quit,
},
VirtualKeyCode::Up => MainMenuResult::NoSelection {
selected: match selection {
MainMenuSelection::NewGame => MainMenuSelection::Quit,
MainMenuSelection::LoadGame => MainMenuSelection::NewGame,
MainMenuSelection::Quit => {
if save_exists {
MainMenuSelection::LoadGame
} else {
MainMenuSelection::NewGame
}
}
},
},
VirtualKeyCode::Down => MainMenuResult::NoSelection {
selected: match selection {
MainMenuSelection::NewGame => {
if save_exists {
MainMenuSelection::LoadGame
} else {
MainMenuSelection::Quit
}
}
MainMenuSelection::LoadGame => MainMenuSelection::Quit,
MainMenuSelection::Quit => MainMenuSelection::NewGame,
},
},
VirtualKeyCode::Return => MainMenuResult::Selected {
selected: selection,
},
_ => MainMenuResult::NoSelection {
selected: selection,
},
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},
};
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}
MainMenuResult::NoSelection {
selected: MainMenuSelection::NewGame,
}
}
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#[derive(PartialEq, Copy, Clone)]
pub enum GameOverResult {
NoSelection,
QuitToMenu,
}
pub fn game_over(ctx: &mut Rltk) -> GameOverResult {
ctx.print_color_centered(
15,
RGB::named(rltk::YELLOW),
RGB::named(rltk::BLACK),
"Your journey has ended!",
);
ctx.print_color_centered(
17,
RGB::named(rltk::WHITE),
RGB::named(rltk::BLACK),
"One day, we'll tell you all about how you did.",
);
ctx.print_color_centered(
18,
RGB::named(rltk::WHITE),
RGB::named(rltk::BLACK),
"That day, sadly, is not in this chapter...",
);
ctx.print_color_centered(
20,
RGB::named(rltk::MAGENTA),
RGB::named(rltk::BLACK),
"Press any key to return to the menu.",
);
match ctx.key {
None => GameOverResult::NoSelection,
Some(_) => GameOverResult::QuitToMenu,
}
}