Part 2.

actions.py

@@ -1,9 +1,27 @@
-class Action:
-    pass
+from __future__ import annotations
 
+from typing import TYPE_CHECKING
+
+if TYPE_CHECKING:
+    from engine import Engine
+    from entity import Entity
+
+
+class Action:
+    def perform(self, engine: Engine, entity: Entity) -> None:
+        """Perform this action with the objects needed to determine its scope
+
+        'engine' is the scope this action is being perfrmed in.
+
+        'entity is the object performing the action.
+
+        This method must be overridden by Action subclasses
+        """
+        raise NotImplementedError()
 
 class EscapeAction(Action):
-    pass
+    def perform(self, engine: Engine, entity: Entity) -> None:
+        raise SystemExit()
 
 class MovementAction(Action):
     def __init__(self, dx: int, dy: int):
@@ -11,3 +29,14 @@ class MovementAction(Action):
 
         self.dx = dx
         self.dy = dy
+
+    def perform(self, engine: Engine, entity: Entity) -> None:
+        dest_x = entity.x + self.dx
+        dest_y = entity.y + self.dy
+
+        if not engine.game_map.in_bounds(dest_x, dest_y):
+            return  # Destination is out of bounds.
+        if not engine.game_map.tiles["walkable"][dest_x, dest_y]:
+            return  # Destination is blocked by a tile
+
+        entity.move(self.dx, self.dy)

engine.py

@@ -5,12 +5,15 @@ from tcod.console import Console
 
 from actions import EscapeAction, MovementAction
 from entity import Entity
+from game_map import GameMap
 from input_handlers import EventHandler
 
+
 class Engine:
-    def __init__(self, entities: Set[Entity], event_handler: EventHandler, player: Entity):
+    def __init__(self, entities: Set[Entity], event_handler: EventHandler, game_map: GameMap, player: Entity):
         self.entities = entities
         self.event_handler = event_handler
+        self.game_map = game_map
         self.player = player
 
     def handle_events(self, events: Iterable[Any]) -> None:
@@ -20,12 +23,11 @@ class Engine:
             if action is None:
                 continue
 
-            if isinstance(action, MovementAction):
-                self.player.move(dx=action.dx, dy=action.dy)
-            elif isinstance(action, EscapeAction):
-                raise SystemExit()
+            action.perform(self, self.player)
 
     def render(self, console: Console, context: Context) -> None:
+        self.game_map.render(console)
+
         for entity in self.entities:
             console.print(entity.x, entity.y, entity.char, fg=entity.color)
 

game_map.py

@@ -1,90 +1,18 @@
-from map_objects import *
-from random import randint
+import numpy as np
+from tcod.console import Console
+
+import tile_types
 
 class GameMap:
-    def __init__(self, width, height):
-        self.width = width
-        self.height = height
-        self.tiles = self.initialize_tiles()
+    def __init__(self, width: int, height: int):
+        self.width, self.height = width, height
+        self.tiles = np.full((width,height), fill_value=tile_types.floor, order="F")
 
-    def initialize_tiles(self):
-        tiles = [[Tile(True) for y in range(self.height)] for x in range(self.width)]
+        self.tiles[30:33, 22] = tile_types.wall
 
-        return tiles
+    def in_bounds(self, x: int, y: int) -> bool:
+        """Return True if x and y are inside the bounds of this map"""
+        return 0 <= x < self.width and 0 <= y < self.height
 
-    def is_blocked(self, x, y):
-        if self.tiles[x][y].blocked:
-            return True
-        return False
-
-    def create_room(self, room):
-        # go through the tiles in the rectangle and make them passable
-        for x in range(room.x1 + 1, room.x2):
-            for y in range(room.y1 +1, room.y2):
-                self.tiles[x][y].blocked = False
-                self.tiles[x][y].block_sight = False
-
-    def create_h_tunnel(self, x1, x2, y):
-        for x in range(min(x1, x2), max(x1, x2) + 1):
-            self.tiles[x][y].blocked = False
-            self.tiles[x][y].block_sight = False
-
-    def create_v_tunnel(self, y1, y2, x):
-        for y in range(min(y1, y2), max(y1, y2) + 1):
-            self.tiles[x][y].blocked = False
-            self.tiles[x][y].block_sight = False
-
-
-    def make_map(self, max_rooms, room_min_size, room_max_size, map_width, map_height, player):
-        rooms = []
-        num_rooms = 0
-
-        for r in range(max_rooms):
-            # print(rooms)
-            # print(num_rooms)
-            # random width and height
-            w = randint(room_min_size, room_max_size)
-            h = randint(room_min_size, room_max_size)
-            # random position without going out of bounds
-            x = randint(0, map_width - w - 1)
-            y = randint(0, map_height - h - 1)
-
-            #call Rect Class
-            new_room = Rect(x, y, w, h)
-            # if rooms == []:
-            #    print('first')
-            #    rooms.append(new_room)
-
-
-            #run through other rooms to check for overlap
-            for other_room in rooms:
-                if new_room.intersect(other_room):
-                    break
-            else:
-                # no overlap, room is valid
-                # paint to map's tiles
-                self.create_room(new_room)
-
-                #center coords of new room
-                (new_x, new_y) = new_room.center()
-
-                if num_rooms == 0:
-                    #first room where player starts
-                    player.x = new_x
-                    player.y = new_y
-                else:
-
-                    # all rooms after the first are connected
-                    # center coords of previous room
-                    (prev_x, prev_y) = rooms[num_rooms - 1].center()
-
-                    if randint(0, 1) == 1:
-                        #first horizontally then vertically
-                        self.create_h_tunnel(prev_x, new_x, prev_y)
-                        self.create_v_tunnel(prev_y, new_y, new_x)
-                    else:
-                        #first vertically then horizontally
-                        self.create_v_tunnel(prev_y, new_y, prev_x)
-                        self.create_h_tunnel(prev_x, new_x, new_y)
-                rooms.append(new_room)
-                num_rooms += 1
+    def render(self, console: Console) -> None:
+        console.tiles_rgb[0:self.width, 0:self.height] = self.tiles["dark"]

main.py

@@ -2,6 +2,7 @@ import tcod
 
 from engine import Engine
 from entity import Entity
+from game_map import GameMap
 from input_handlers import EventHandler
 
 
@@ -10,6 +11,9 @@ def main():
     screen_width = 80
     screen_height = 50
 
+    map_width = 80
+    map_height = 45
+
     room_max_size = 10
     room_min_size = 6
     max_rooms = 30
@@ -29,7 +33,9 @@ def main():
     npc = Entity(int(screen_width/2), int(screen_height/2), '@', (255, 255, 0))
     entities = {npc, player}
 
-    engine = Engine(entities=entities, event_handler=event_handler, player=player)
+    game_map = GameMap(map_width, map_height)
+
+    engine = Engine(entities=entities, event_handler=event_handler, game_map=game_map, player=player)
 
     with tcod.context.new_terminal(
         screen_width,

tile_types.py

@@ -0,0 +1,37 @@
+from typing import Tuple
+
+import numpy as np
+
+graphic_dt = np.dtype(
+    [
+        ("ch", np.int32),
+        ("fg", "3b"),
+        ("bg", "3B"),
+    ]
+)
+
+tile_dt = np.dtype(
+    [
+        ("walkable", np.bool),
+        ("transparent", np.bool),
+        ("dark", graphic_dt),
+    ]
+)
+
+
+def new_tile(
+        *,
+        walkable: int,
+        transparent: int,
+        dark: Tuple[int, Tuple[int, int, int], Tuple[int, int, int]],
+) -> np.ndarray:
+    """Helper function for defining individual tile types"""
+    return np.array((walkable, transparent, dark), dtype=tile_dt)
+
+
+floor = new_tile(
+    walkable=True, transparent=True, dark=(ord(" "),(255,255,255), (50,50, 150)),
+)
+wall = new_tile(
+    walkable=False, transparent=True, dark=(ord(" "), (255,255,255), (0,0,100)),
+)