blindness improves telepathy, and reduces to-hit

src/camera.rs

@@ -63,7 +63,7 @@ pub fn render_camera(ecs: &World, ctx: &mut Rltk) {
             if pos.x < max_x && pos.y < max_y && pos.x >= min_x && pos.y >= min_y {
                 let mut draw = false;
                 let mut fg = render.fg;
-                let bg = if render.bg == (RGB { r: 0.0, g: 0.0, b: 0.0 }) {
+                let mut bg = if render.bg == (RGB { r: 0.0, g: 0.0, b: 0.0 }) {
                     crate::map::themes::get_tile_renderables_for_id(idx, &*map).2
                 } else {
                     render.bg
@@ -76,10 +76,15 @@ pub fn render_camera(ecs: &World, ctx: &mut Rltk) {
                     // We don't darken BG, because get_tile_renderables_for_id handles this.
                 }
                 // Draw entities with minds within telepath range
+                if !draw {
                     if map.telepath_tiles[idx] {
                         let has_mind = minds.get(*ent);
                         if let Some(_) = has_mind {
                             draw = true;
+                            if !map.revealed_tiles[idx] {
+                                bg = RGB::named(BLACK);
+                            }
+                        }
                     }
                 }
                 // Draw all props

src/components.rs

@@ -361,6 +361,9 @@ pub struct Confusion {
     pub turns: i32,
 }
 
+#[derive(Component, Serialize, Deserialize, Clone)]
+pub struct Blind {}
+
 #[derive(Component, Serialize, Deserialize, Clone)]
 pub struct MagicMapper {}
 

src/main.rs

@@ -619,6 +619,7 @@ fn main() -> rltk::BError {
     gs.ecs.register::<AOE>();
     gs.ecs.register::<Digger>();
     gs.ecs.register::<Confusion>();
+    gs.ecs.register::<Blind>();
     gs.ecs.register::<MagicMapper>();
     gs.ecs.register::<InBackpack>();
     gs.ecs.register::<WantsToApproach>();

src/melee_combat_system.rs

@@ -2,8 +2,8 @@ use super::{
     effects::{add_effect, EffectType, Targets},
     gamelog, gamesystem,
     gui::renderable_colour,
-    ArmourClassBonus, Attributes, EquipmentSlot, Equipped, HungerClock, HungerState, MeleeWeapon, MultiAttack, Name,
-    NaturalAttacks, ParticleBuilder, Pools, Position, Renderable, Skill, Skills, ToHitBonus, WantsToMelee,
+    ArmourClassBonus, Attributes, Blind, EquipmentSlot, Equipped, HungerClock, HungerState, MeleeWeapon, MultiAttack,
+    Name, NaturalAttacks, ParticleBuilder, Pools, Position, Renderable, Skill, Skills, ToHitBonus, WantsToMelee,
     WeaponAttribute,
 };
 use rltk::prelude::*;
@@ -30,6 +30,7 @@ impl<'a> System<'a> for MeleeCombatSystem {
         ReadStorage<'a, ToHitBonus>,
         ReadStorage<'a, HungerClock>,
         ReadStorage<'a, MultiAttack>,
+        ReadStorage<'a, Blind>,
         WriteExpect<'a, rltk::RandomNumberGenerator>,
     );
 
@@ -52,6 +53,7 @@ impl<'a> System<'a> for MeleeCombatSystem {
             to_hit,
             hunger_clock,
             multi_attackers,
+            blind_entities,
             mut rng,
         ) = data;
 
@@ -119,10 +121,8 @@ impl<'a> System<'a> for MeleeCombatSystem {
                 if target_pools.hit_points.current <= 0 {
                     break;
                 }
-
                 let weapon_info = attack.0;
                 let attack_verb = attack.1;
-
                 // Get all offensive bonuses
                 let d20 = rng.roll_dice(1, 20);
                 let attribute_hit_bonus = attacker_attributes.dexterity.bonus;
@@ -134,6 +134,9 @@ impl<'a> System<'a> for MeleeCombatSystem {
                     }
                 }
                 let mut status_hit_bonus = 0;
+                if let Some(_) = blind_entities.get(entity) {
+                    status_hit_bonus -= 4;
+                };
                 let hc = hunger_clock.get(entity);
                 if let Some(hc) = hc {
                     match hc.state {

src/visibility_system.rs

@@ -1,9 +1,11 @@
-use super::{gamelog, BlocksVisibility, Hidden, Map, Name, Player, Position, Telepath, Viewshed};
+use super::{gamelog, Blind, BlocksVisibility, Hidden, Map, Name, Player, Position, Telepath, Viewshed};
 use rltk::{FieldOfViewAlg::SymmetricShadowcasting, Point};
 use specs::prelude::*;
 
 pub struct VisibilitySystem {}
 
+const BLIND_TELEPATHY_RANGE_MULTIPLIER: i32 = 3;
+
 impl<'a> System<'a> for VisibilitySystem {
     type SystemData = (
         WriteExpect<'a, Map>,
@@ -15,12 +17,24 @@ impl<'a> System<'a> for VisibilitySystem {
         ReadStorage<'a, Player>,
         WriteStorage<'a, Hidden>,
         ReadStorage<'a, Name>,
+        ReadStorage<'a, Blind>,
         ReadStorage<'a, BlocksVisibility>,
     );
 
     fn run(&mut self, data: Self::SystemData) {
-        let (mut map, mut rng, entities, mut viewshed, mut telepath, pos, player, mut hidden, names, blocks_visibility) =
-            data;
+        let (
+            mut map,
+            mut rng,
+            entities,
+            mut viewshed,
+            mut telepath,
+            pos,
+            player,
+            mut hidden,
+            names,
+            blind_entities,
+            blocks_visibility,
+        ) = data;
 
         map.view_blocked.clear();
         for (block_pos, _block) in (&pos, &blocks_visibility).join() {
@@ -31,8 +45,9 @@ impl<'a> System<'a> for VisibilitySystem {
         for (ent, viewshed, pos) in (&entities, &mut viewshed, &pos).join() {
             if viewshed.dirty {
                 viewshed.dirty = false;
+                let mut range = if let Some(is_blind) = blind_entities.get(ent) { 1 } else { viewshed.range };
                 let origin = Point::new(pos.x, pos.y);
-                viewshed.visible_tiles = SymmetricShadowcasting.field_of_view(origin, viewshed.range, &*map);
+                viewshed.visible_tiles = SymmetricShadowcasting.field_of_view(origin, range, &*map);
                 viewshed.visible_tiles.retain(|p| {
                     p.x >= 0
                         && p.x < map.width
@@ -78,8 +93,11 @@ impl<'a> System<'a> for VisibilitySystem {
         for (ent, telepath, pos) in (&entities, &mut telepath, &pos).join() {
             if telepath.dirty {
                 telepath.dirty = false;
-
-                telepath.telepath_tiles = fast_fov(pos.x, pos.y, telepath.range);
+                let mut range = telepath.range;
+                if let Some(is_blind) = blind_entities.get(ent) {
+                    range *= BLIND_TELEPATHY_RANGE_MULTIPLIER;
+                }
+                telepath.telepath_tiles = fast_fov(pos.x, pos.y, range);
                 telepath.telepath_tiles.retain(|p| p.x >= 0 && p.x < map.width && p.y >= 0 && p.y < map.height);
 
                 // If this is the player, reveal what they can see