433 lines
16 KiB
Rust
433 lines
16 KiB
Rust
use specs::prelude::*;
|
|
|
|
use crate::*;
|
|
|
|
#[derive(PartialEq, Copy, Clone)]
|
|
pub enum RunState {
|
|
AwaitingInput,
|
|
PreRun,
|
|
PlayerTurn,
|
|
MonsterTurn,
|
|
ShowInventory,
|
|
ShowDropItem,
|
|
ShowTargeting {
|
|
range: i32,
|
|
item: Entity,
|
|
},
|
|
MainMenu {
|
|
menu_selection: gui::MainMenuSelection,
|
|
},
|
|
SaveGame,
|
|
NextLevel,
|
|
ShowRemoveItem,
|
|
GameOver,
|
|
MagicMapReveal {
|
|
row: i32,
|
|
},
|
|
MapGeneration,
|
|
}
|
|
|
|
pub struct State {
|
|
pub ecs: World,
|
|
mapgen_next_state: Option<RunState>,
|
|
mapgen_history: Vec<Map>,
|
|
mapgen_index: usize,
|
|
mapgen_timer: f32,
|
|
}
|
|
|
|
impl State {
|
|
pub fn new() -> Self {
|
|
Self {
|
|
ecs: World::new(),
|
|
mapgen_history: Vec::new(),
|
|
mapgen_index: 0,
|
|
mapgen_timer: 0.,
|
|
mapgen_next_state: Some(RunState::MainMenu {
|
|
menu_selection: MainMenuSelection::NewGame,
|
|
}),
|
|
}
|
|
}
|
|
|
|
pub fn game_over_cleanup(&mut self) {
|
|
// Delete everything
|
|
let mut to_delete = Vec::new();
|
|
for e in self.ecs.entities().join() {
|
|
to_delete.push(e);
|
|
}
|
|
for del in to_delete.iter() {
|
|
self.ecs.delete_entity(*del).expect("Deletion failed");
|
|
}
|
|
|
|
{
|
|
let player_entity = spawner::player(&mut self.ecs, 0, 0);
|
|
let mut player_entity_writer = self.ecs.write_resource::<Entity>();
|
|
*player_entity_writer = player_entity
|
|
}
|
|
|
|
self.generate_world_map(1);
|
|
}
|
|
|
|
fn entities_to_remove_on_level_change(&mut self) -> Vec<Entity> {
|
|
let entities = self.ecs.entities();
|
|
let player = self.ecs.read_storage::<Player>();
|
|
let backpack = self.ecs.read_storage::<InBackpack>();
|
|
let player_entity = self.ecs.fetch::<Entity>();
|
|
let equipped = self.ecs.read_storage::<Equipped>();
|
|
|
|
let mut to_delete: Vec<Entity> = Vec::new();
|
|
for entity in entities.join() {
|
|
let mut should_delete = true;
|
|
|
|
let p = player.get(entity);
|
|
if let Some(_p) = p {
|
|
should_delete = false;
|
|
}
|
|
|
|
let bp = backpack.get(entity);
|
|
if let Some(bp) = bp {
|
|
if bp.owner == *player_entity {
|
|
should_delete = false;
|
|
}
|
|
}
|
|
|
|
if let Some(eq) = equipped.get(entity) {
|
|
if eq.owner == *player_entity {
|
|
should_delete = false;
|
|
}
|
|
}
|
|
|
|
if should_delete {
|
|
to_delete.push(entity);
|
|
}
|
|
}
|
|
|
|
to_delete
|
|
}
|
|
|
|
fn goto_next_level(&mut self) {
|
|
let to_delete = self.entities_to_remove_on_level_change();
|
|
for target in to_delete {
|
|
self.ecs
|
|
.delete_entity(target)
|
|
.expect("Unable to delete entity")
|
|
}
|
|
|
|
let current_depth;
|
|
{
|
|
let worldmap_resource = self.ecs.write_resource::<Map>();
|
|
current_depth = worldmap_resource.depth;
|
|
}
|
|
self.generate_world_map(current_depth + 1);
|
|
|
|
let player_entity = self.ecs.fetch::<Entity>();
|
|
let mut gamelog = self.ecs.fetch_mut::<GameLog>();
|
|
gamelog
|
|
.entries
|
|
.push("You descend to the next level, and take a moment to heal".to_string());
|
|
let mut player_health_store = self.ecs.write_storage::<CombatStats>();
|
|
let player_health = player_health_store.get_mut(*player_entity);
|
|
if let Some(player_health) = player_health {
|
|
player_health.hp = i32::max(player_health.hp, player_health.max_hp / 2);
|
|
}
|
|
}
|
|
|
|
fn run_systems(&mut self) {
|
|
let mut vis = VisibilitySystem {};
|
|
vis.run_now(&self.ecs);
|
|
|
|
let mut mob = MonsterAI {};
|
|
mob.run_now(&self.ecs);
|
|
|
|
let mut trigger = TriggerSystem {};
|
|
trigger.run_now(&self.ecs);
|
|
|
|
let mut map_index = MapIndexingSystem {};
|
|
map_index.run_now(&self.ecs);
|
|
|
|
let mut melee_system = MeleeCombatSystem {};
|
|
melee_system.run_now(&self.ecs);
|
|
|
|
let mut damage_system = DamageSystem {};
|
|
damage_system.run_now(&self.ecs);
|
|
|
|
let mut healing_system = HealingSystem {};
|
|
healing_system.run_now(&self.ecs);
|
|
|
|
let mut inventory = ItemCollectionSystem {};
|
|
inventory.run_now(&self.ecs);
|
|
|
|
let mut potions = ItemUseSystem {};
|
|
potions.run_now(&self.ecs);
|
|
|
|
let mut drop_items = ItemDropSystem {};
|
|
drop_items.run_now(&self.ecs);
|
|
|
|
let mut remove_items = ItemRemoveSystem {};
|
|
remove_items.run_now(&self.ecs);
|
|
|
|
let mut hunger = HungerSystem {};
|
|
hunger.run_now(&self.ecs);
|
|
|
|
let mut particle_spawn = ParticleSpawnSystem {};
|
|
particle_spawn.run_now(&self.ecs);
|
|
|
|
self.ecs.maintain();
|
|
}
|
|
|
|
pub fn generate_world_map(&mut self, new_depth: i32) {
|
|
self.mapgen_index = 0;
|
|
self.mapgen_timer = 0.0;
|
|
self.mapgen_history.clear();
|
|
|
|
let mut map_builder = map_builders::new_random_builder(new_depth);
|
|
map_builder.build_map();
|
|
self.mapgen_history = map_builder.get_snapshot_history();
|
|
let player_start;
|
|
{
|
|
let mut world_map_resource = self.ecs.write_resource::<Map>();
|
|
*world_map_resource = map_builder.get_map();
|
|
player_start = map_builder.get_starting_position();
|
|
}
|
|
|
|
map_builder.spawn_entities(&mut self.ecs);
|
|
|
|
let (player_x, player_y) = (player_start.x, player_start.y);
|
|
let mut player_pos = self.ecs.write_resource::<Point>();
|
|
*player_pos = Point::new(player_x, player_y);
|
|
let mut pos_comp = self.ecs.write_storage::<Position>();
|
|
let player_entity = self.ecs.fetch::<Entity>();
|
|
if let Some(player_pos_comp) = pos_comp.get_mut(*player_entity) {
|
|
player_pos_comp.x = player_x;
|
|
player_pos_comp.y = player_y;
|
|
}
|
|
|
|
let mut viewshed_comp = self.ecs.write_storage::<Viewshed>();
|
|
if let Some(vs) = viewshed_comp.get_mut(*player_entity) {
|
|
vs.dirty = true;
|
|
}
|
|
}
|
|
}
|
|
|
|
impl GameState for State {
|
|
fn tick(&mut self, ctx: &mut rltk::Rltk) {
|
|
let mut new_run_state;
|
|
{
|
|
let run_state = self.ecs.fetch::<RunState>();
|
|
new_run_state = *run_state;
|
|
}
|
|
|
|
ctx.cls();
|
|
particle_system::cull_dead_particles(&mut self.ecs, ctx);
|
|
|
|
match new_run_state {
|
|
RunState::MainMenu { .. } => {}
|
|
_ => {
|
|
draw_map(&self.ecs.fetch::<Map>(), ctx);
|
|
|
|
let positions = self.ecs.read_storage::<Position>();
|
|
let renderables = self.ecs.read_storage::<Renderable>();
|
|
let hidden = self.ecs.read_storage::<Hidden>();
|
|
let map = self.ecs.fetch::<Map>();
|
|
|
|
let mut data = (&positions, &renderables, !&hidden)
|
|
.join()
|
|
.collect::<Vec<_>>();
|
|
data.sort_by(|&a, &b| b.1.render_order.cmp(&a.1.render_order));
|
|
for (pos, render, _hidden) in data.iter() {
|
|
let idx = map.xy_idx(pos.x, pos.y);
|
|
if map.visible_tiles[idx] {
|
|
ctx.set(pos.x, pos.y, render.fg, render.bg, render.glyph)
|
|
}
|
|
}
|
|
|
|
gui::draw_ui(&self.ecs, ctx);
|
|
}
|
|
}
|
|
|
|
match new_run_state {
|
|
RunState::PreRun => {
|
|
self.run_systems();
|
|
new_run_state = RunState::AwaitingInput;
|
|
}
|
|
RunState::AwaitingInput => new_run_state = player_input(self, ctx),
|
|
RunState::PlayerTurn => {
|
|
self.run_systems();
|
|
new_run_state = RunState::MonsterTurn;
|
|
match *self.ecs.fetch::<RunState>() {
|
|
RunState::MagicMapReveal { .. } => {
|
|
new_run_state = RunState::MagicMapReveal { row: 0 }
|
|
}
|
|
_ => {
|
|
new_run_state = RunState::MonsterTurn;
|
|
}
|
|
}
|
|
}
|
|
RunState::MonsterTurn => {
|
|
self.run_systems();
|
|
new_run_state = RunState::AwaitingInput;
|
|
}
|
|
RunState::ShowInventory => {
|
|
let result = gui::show_inventory(self, ctx);
|
|
match result.0 {
|
|
gui::ItemMenuResult::Cancel => new_run_state = RunState::AwaitingInput,
|
|
gui::ItemMenuResult::NoResponse => {}
|
|
gui::ItemMenuResult::Selected => {
|
|
let item_entity = result.1.unwrap();
|
|
let is_ranged = self.ecs.read_storage::<Ranged>();
|
|
let is_item_ranged = is_ranged.get(item_entity);
|
|
if let Some(is_item_ranged) = is_item_ranged {
|
|
new_run_state = RunState::ShowTargeting {
|
|
range: is_item_ranged.range,
|
|
item: item_entity,
|
|
}
|
|
} else {
|
|
let mut intent = self.ecs.write_storage::<WantsToUseItem>();
|
|
intent
|
|
.insert(
|
|
*self.ecs.fetch::<Entity>(),
|
|
WantsToUseItem {
|
|
item: item_entity,
|
|
target: None,
|
|
},
|
|
)
|
|
.expect("Unable to insert intent");
|
|
new_run_state = RunState::PlayerTurn;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
RunState::ShowDropItem => {
|
|
let result = gui::drop_item_menu(self, ctx);
|
|
match result.0 {
|
|
gui::ItemMenuResult::Cancel => new_run_state = RunState::AwaitingInput,
|
|
gui::ItemMenuResult::NoResponse => {}
|
|
gui::ItemMenuResult::Selected => {
|
|
let item_entity = result.1.unwrap();
|
|
let mut intent = self.ecs.write_storage::<WantsToDropItem>();
|
|
intent
|
|
.insert(
|
|
*self.ecs.fetch::<Entity>(),
|
|
WantsToDropItem { item: item_entity },
|
|
)
|
|
.expect("Unable to insert intent");
|
|
new_run_state = RunState::PlayerTurn;
|
|
}
|
|
}
|
|
}
|
|
RunState::ShowTargeting { range, item } => {
|
|
let result = gui::ranged_target(self, ctx, range);
|
|
match result.0 {
|
|
gui::ItemMenuResult::Cancel => new_run_state = RunState::AwaitingInput,
|
|
gui::ItemMenuResult::NoResponse => {}
|
|
gui::ItemMenuResult::Selected => {
|
|
let mut intent = self.ecs.write_storage::<WantsToUseItem>();
|
|
intent
|
|
.insert(
|
|
*self.ecs.fetch::<Entity>(),
|
|
WantsToUseItem {
|
|
item,
|
|
target: result.1,
|
|
},
|
|
)
|
|
.expect("Unable to insert intent");
|
|
new_run_state = RunState::PlayerTurn;
|
|
}
|
|
}
|
|
}
|
|
RunState::MainMenu { .. } => {
|
|
let result = gui::main_menu(self, ctx);
|
|
match result {
|
|
gui::MainMenuResult::NoSelection { selected } => {
|
|
new_run_state = RunState::MainMenu {
|
|
menu_selection: selected,
|
|
}
|
|
}
|
|
gui::MainMenuResult::Selected { selected } => match selected {
|
|
gui::MainMenuSelection::NewGame => new_run_state = RunState::PreRun,
|
|
gui::MainMenuSelection::LoadGame => {
|
|
save_load_system::load_game(&mut self.ecs);
|
|
new_run_state = RunState::AwaitingInput;
|
|
save_load_system::delete_save();
|
|
}
|
|
gui::MainMenuSelection::Quit => ::std::process::exit(0),
|
|
},
|
|
}
|
|
}
|
|
RunState::SaveGame => {
|
|
save_load_system::save_game(&mut self.ecs);
|
|
new_run_state = RunState::MainMenu {
|
|
menu_selection: gui::MainMenuSelection::Quit,
|
|
};
|
|
}
|
|
RunState::NextLevel => {
|
|
self.goto_next_level();
|
|
new_run_state = RunState::PreRun;
|
|
}
|
|
RunState::ShowRemoveItem => {
|
|
let result = gui::remove_item_menu(self, ctx);
|
|
match result.0 {
|
|
gui::ItemMenuResult::Cancel => new_run_state = RunState::AwaitingInput,
|
|
gui::ItemMenuResult::NoResponse => {}
|
|
gui::ItemMenuResult::Selected => {
|
|
let item_entity = result.1.unwrap();
|
|
let mut intent = self.ecs.write_storage::<WantsToRemoveItem>();
|
|
intent
|
|
.insert(
|
|
*self.ecs.fetch::<Entity>(),
|
|
WantsToRemoveItem { item: item_entity },
|
|
)
|
|
.expect("Unable to insert intent");
|
|
new_run_state = RunState::PlayerTurn;
|
|
}
|
|
}
|
|
}
|
|
RunState::GameOver => {
|
|
let result = gui::game_over(ctx);
|
|
match result {
|
|
gui::GameOverResult::NoSelection => {}
|
|
gui::GameOverResult::QuitToMenu => {
|
|
self.game_over_cleanup();
|
|
new_run_state = RunState::MainMenu {
|
|
menu_selection: gui::MainMenuSelection::NewGame,
|
|
};
|
|
}
|
|
}
|
|
}
|
|
RunState::MagicMapReveal { row } => {
|
|
let mut map = self.ecs.fetch_mut::<Map>();
|
|
for x in 0..MAP_WIDTH {
|
|
let idx = map.xy_idx(x as i32, row);
|
|
map.revealed_tiles[idx] = true;
|
|
}
|
|
if row as usize == MAP_HEIGHT - 1 {
|
|
new_run_state = RunState::MonsterTurn;
|
|
} else {
|
|
new_run_state = RunState::MagicMapReveal { row: row + 1 }
|
|
}
|
|
}
|
|
RunState::MapGeneration => {
|
|
if !SHOW_MAPGEN_VISUALIZER {
|
|
new_run_state = self.mapgen_next_state.unwrap();
|
|
}
|
|
ctx.cls();
|
|
draw_map(&self.mapgen_history[self.mapgen_index], ctx);
|
|
|
|
self.mapgen_timer += ctx.frame_time_ms;
|
|
if self.mapgen_timer > 300.0 {
|
|
self.mapgen_timer = 0.0;
|
|
self.mapgen_index += 1;
|
|
if self.mapgen_index >= self.mapgen_history.len() {
|
|
new_run_state = self.mapgen_next_state.unwrap();
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
{
|
|
let mut run_writer = self.ecs.write_resource::<RunState>();
|
|
*run_writer = new_run_state;
|
|
}
|
|
damage_system::delete_the_dead(&mut self.ecs);
|
|
}
|
|
}
|