87 lines
3.6 KiB
Rust
87 lines
3.6 KiB
Rust
use crate::{gamelog, Attributes, Burden, EquipmentChanged, Equipped, InBackpack, Item, Pools};
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use rltk::prelude::*;
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use specs::prelude::*;
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use std::collections::HashMap;
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pub const CARRY_CAPACITY_PER_STRENGTH: i32 = 8;
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pub struct EncumbranceSystem {}
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impl<'a> System<'a> for EncumbranceSystem {
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#[allow(clippy::type_complexity)]
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type SystemData = (
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WriteStorage<'a, EquipmentChanged>,
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Entities<'a>,
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ReadStorage<'a, Item>,
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ReadStorage<'a, InBackpack>,
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ReadStorage<'a, Equipped>,
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WriteStorage<'a, Pools>,
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ReadStorage<'a, Attributes>,
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ReadExpect<'a, Entity>,
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WriteStorage<'a, Burden>,
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);
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fn run(&mut self, data: Self::SystemData) {
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let (mut equip_dirty, entities, items, backpacks, wielded, mut pools, attributes, player, mut burdened) = data;
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if equip_dirty.is_empty() {
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return;
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}
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// Build update map
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let mut to_update: HashMap<Entity, f32> = HashMap::new();
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for (entity, _dirty) in (&entities, &equip_dirty).join() {
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to_update.insert(entity, 0.0);
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}
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equip_dirty.clear();
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// Total up equipped items
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for (item, equipped) in (&items, &wielded).join() {
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if to_update.contains_key(&equipped.owner) {
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let totals = to_update.get_mut(&equipped.owner).unwrap();
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*totals += item.weight;
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}
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}
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// Total carried items
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for (item, carried) in (&items, &backpacks).join() {
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if to_update.contains_key(&carried.owner) {
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let totals = to_update.get_mut(&carried.owner).unwrap();
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*totals += item.weight;
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}
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}
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// Apply to pools
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for (entity, weight) in to_update.iter() {
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if let Some(pool) = pools.get_mut(*entity) {
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pool.weight = *weight;
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if let Some(attr) = attributes.get(*entity) {
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let carry_capacity_lbs =
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(attr.strength.base + attr.strength.modifiers) * CARRY_CAPACITY_PER_STRENGTH;
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if pool.weight as i32 > 3 * carry_capacity_lbs {
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// Overloaded
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burdened
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.insert(*entity, Burden { level: crate::BurdenLevel::Overloaded })
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.expect("Failed to insert Burden");
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if *entity == *player {
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gamelog::Logger::new().append("You're overloaded!").log();
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}
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} else if pool.weight as i32 > 2 * carry_capacity_lbs {
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// Strained
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burdened
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.insert(*entity, Burden { level: crate::BurdenLevel::Strained })
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.expect("Failed to insert Burden");
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if *entity == *player {
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gamelog::Logger::new().append("You're strained.").log();
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}
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} else if pool.weight as i32 > carry_capacity_lbs {
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// Burdened
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burdened
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.insert(*entity, Burden { level: crate::BurdenLevel::Burdened })
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.expect("Failed to insert Burden");
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if *entity == *player {
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gamelog::Logger::new().append("You're burdened.").log();
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}
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} else {
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burdened.remove(*entity);
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}
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}
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}
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}
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}
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}
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