Add the dragon

raws/spawns.json

@@ -68,7 +68,7 @@
     },
     {
       "name": "Health Potion",
-      "weight": 7,
+      "weight": 15,
       "min_depth": 0,
       "max_depth": 100
     },
@@ -82,15 +82,13 @@
       "name": "Fireball Scroll",
       "weight": 2,
       "min_depth": 0,
-      "max_depth": 100,
-      "add_map_depth_to_weight": true
+      "max_depth": 100
     },
     {
       "name": "Confusion Scroll",
       "weight": 2,
       "min_depth": 0,
-      "max_depth": 100,
-      "add_map_depth_to_weight": true
+      "max_depth": 100
     },
     {
       "name": "Magic Missile Scroll",
@@ -236,12 +234,6 @@
       "min_depth": 2,
       "max_depth": 2
     },
-    {
-      "name": "Deer",
-      "weight": 14,
-      "min_depth": 2,
-      "max_depth": 2
-    },
     {
       "name": "Bandit",
       "weight": 9,
@@ -1753,7 +1745,7 @@
       "vision_range": 8,
       "movement": "static",
       "attributes": {
-        "might": 3,
+        "might": 7,
         "fitness": 3
       },
       "skills": {
@@ -2090,6 +2082,60 @@
       "level": 3,
       "gold": "3d6"
     },
+    {
+      "name": "Black Dragon",
+      "renderable": {
+        "glyph": "D",
+        "fg": "#FF0000",
+        "bg": "#000000",
+        "order": 1,
+        "x_size": 2,
+        "y_size": 2
+      },
+      "blocks_tile": true,
+      "vision_range": 12,
+      "movement": "static",
+      "attributes": {
+        "might": 13,
+        "fitness": 13
+      },
+      "skills": {
+        "Melee": 18,
+        "Defense": 16
+      },
+      "natural": {
+        "armor_class": 17,
+        "attacks": [
+          {
+            "name": "bite",
+            "hit_bonus": 4,
+            "damage": "1d10+2"
+          },
+          {
+            "name": "left_claw",
+            "hit_bonus": 2,
+            "damage": "1d10"
+          },
+          {
+            "name": "right_claw",
+            "hit_bonus": 2,
+            "damage": "1d10"
+          }
+        ]
+      },
+      "loot_table": "Wyrms",
+      "faction": "Wyrm",
+      "level": 6,
+      "gold": "20d10",
+      "abilities": [
+        {
+          "spell": "Acid Breath",
+          "chance": 0.2,
+          "range": 8.0,
+          "min_range": 2.0
+        }
+      ]
+    },
     {
       "name": "Lizardman",
       "renderable": {
@@ -2405,6 +2451,16 @@
         "damage_over_time": "4",
         "particle_line": "▓;#00FF00;400.0"
       }
+    },
+    {
+      "name": "Acid Breath",
+      "mana_cost": 2,
+      "effects": {
+        "ranged": "6",
+        "damage": "10",
+        "area_of_effect": "3",
+        "particle": "☼;#00FF00;400.0"
+      }
     }
   ]
 }

src/map_builders/dwarf_fort.rs

@@ -1,11 +1,11 @@
-use ::rltk::RandomNumberGenerator;
+use ::rltk::{DistanceAlg, Point, RandomNumberGenerator};
 
 use super::{
     AreaEndingPosition, AreaStartingPosition, BspCorridors, BspDungeonBuilder, BuilderChain,
     BuilderMap, CorridorSpawner, CullUnreachable, DLABuilder, DistantExit, MetaMapBuilder,
     RoomDrawer, RoomSort, RoomSorter, VoronoiSpawning, XEnd, XStart, YEnd, YStart,
 };
-use crate::TileType;
+use crate::{tile_walkable, TileType};
 
 pub fn dwarf_fort_builder(
     new_depth: i32,
@@ -25,7 +25,8 @@ pub fn dwarf_fort_builder(
         .with(CullUnreachable::new())
         .with(AreaEndingPosition::new(XEnd::Right, YEnd::Bottom))
         .with(VoronoiSpawning::new())
-        .with(DistantExit::new());
+        .with(DistantExit::new())
+        .with(DragonSpawner::new());
 
     chain
 }
@@ -67,3 +68,64 @@ impl DragonsLair {
         build_data.take_snapshot();
     }
 }
+
+pub struct DragonSpawner {}
+
+impl MetaMapBuilder for DragonSpawner {
+    fn build_map(&mut self, rng: &mut RandomNumberGenerator, build_data: &mut BuilderMap) {
+        self.build(rng, build_data);
+    }
+}
+
+impl DragonSpawner {
+    #[allow(dead_code)]
+    pub fn new() -> Box<DragonSpawner> {
+        Box::new(DragonSpawner {})
+    }
+
+    fn build(&mut self, _rng: &mut RandomNumberGenerator, build_data: &mut BuilderMap) {
+        // Find a central location that isn't occupied
+        let seed_x = build_data.map.width / 2;
+        let seed_y = build_data.map.height / 2;
+        let mut available_floors: Vec<(usize, f32)> = Vec::new();
+        for (idx, tiletype) in build_data.map.tiles.iter().enumerate() {
+            if tile_walkable(*tiletype) {
+                available_floors.push((
+                    idx,
+                    DistanceAlg::PythagorasSquared.distance2d(
+                        Point::new(
+                            idx as i32 % build_data.map.width,
+                            idx as i32 / build_data.map.width,
+                        ),
+                        Point::new(seed_x, seed_y),
+                    ),
+                ));
+            }
+        }
+
+        if available_floors.is_empty() {
+            panic!("No valid floors to start on.");
+        }
+
+        available_floors.sort_by(|a, b| a.1.partial_cmp(&b.1).unwrap());
+
+        let start_x = available_floors[0].0 as i32 % build_data.map.width;
+        let start_y = available_floors[0].0 as i32 / build_data.map.width;
+        let dragon_pt = Point::new(start_x, start_y);
+
+        // Remove all spawns within 25 tiles of the drake
+        let w = build_data.map.width as i32;
+        build_data.spawn_list.retain(|spawn| {
+            let spawn_pt = Point::new(spawn.0 as i32 % w, spawn.0 as i32 / 2);
+            let distance = DistanceAlg::Pythagoras.distance2d(dragon_pt, spawn_pt);
+
+            distance > 25.0
+        });
+
+        // Add the dragon
+        let dragon_idx = build_data.map.xy_idx(start_x, start_y);
+        build_data
+            .spawn_list
+            .push((dragon_idx, "Black Dragon".to_string()));
+    }
+}

src/state.rs

@@ -23,7 +23,7 @@ use crate::visibility_system::VisibilitySystem;
 use crate::{ai, camera, damage_system, effects, saveload_system, spawner};
 
 /// Whether to show a visual representation of map generation
-pub const SHOW_MAPGEN_VISUALIZER: bool = true;
+pub const SHOW_MAPGEN_VISUALIZER: bool = false;
 
 /// The main actions possible with a vendor
 #[derive(PartialEq, Copy, Clone)]