Merge branch 'feat/items' into 'main'

feat: item

See merge request swd25-bootcamp/silent-fh!19

src/item.py

@@ -0,0 +1,133 @@
+import pygame
+import random
+from src.settings import (
+    ITEM_SPAWN_INTERVAL, ITEM_SHOPPING_TIMER, ITEM_SIZE,
+    COLOR_HP_BAR_YELLOW, COLOR_HP_BAR_BG
+)
+
+
+class Item:
+    def __init__(self, x, y, item_type):
+        self.x = x
+        self.y = y
+        self.item_type = item_type
+
+        # collision rect for player (2 times item size for width and height)
+        self.rect = pygame.Rect(self.x, self.y, ITEM_SIZE, ITEM_SIZE)
+
+        # timer to store time when item appeared
+        self.spawn_time = pygame.time.get_ticks()
+
+        # try to load sprite with item type
+        try:
+            path = f"assets/items/{item_type}.png"
+            self.image = pygame.image.load(path).convert_alpha()
+            self.image = pygame.transform.scale(self.image, (ITEM_SIZE, ITEM_SIZE))
+        except Exception as e:
+            print(f"Error loading item sprite {item_type}: {e}")
+            self.image = None
+
+    # to check if the time ran out to buy the item
+    def is_expired(self):
+        return pygame.time.get_ticks() - self.spawn_time >= ITEM_SHOPPING_TIMER
+
+    # cam offset to convert world coordinates to screen coordinates
+    def draw(self, screen, cam_x, cam_y):
+        draw_x = self.x - cam_x
+        draw_y = self.y - cam_y
+
+        if self.image is not None:
+            screen.blit(self.image, (draw_x, draw_y))
+        else:
+            # fallback using settings colors
+            # coffee brown, beer yellow
+            if self.item_type == "coffee":
+                color = (120, 70, 30)
+            else:
+                color = COLOR_HP_BAR_YELLOW
+
+            draw_rect = (draw_x, draw_y, ITEM_SIZE, ITEM_SIZE)
+            pygame.draw.rect(screen, color, draw_rect)
+            pygame.draw.rect(screen, COLOR_HP_BAR_BG, draw_rect, 2)
+
+
+# try 50 times to find a free position to spawn item
+def _random_position(room_rect, blocked_rects):
+    attempts = 0
+    max_attempts = 50
+
+    while attempts < max_attempts:
+        # generate random x/y coordinates with room boundaries
+        # * 2 to have a margin to walls
+        x = random.randint(room_rect.left + ITEM_SIZE, room_rect.right - ITEM_SIZE * 2)
+        y = random.randint(room_rect.top + ITEM_SIZE, room_rect.bottom - ITEM_SIZE * 2)
+
+        # create a rect at this position for testing collision
+        test_rect = pygame.Rect(x, y, ITEM_SIZE, ITEM_SIZE)
+        blocked = False
+        for b in blocked_rects:
+            if test_rect.colliderect(b):
+                blocked = True
+                break
+
+        # if position is not blocked, return the position
+        if not blocked:
+            return x, y
+
+        attempts += 1
+
+        # no spot after 50 attempts -> return
+    return None
+
+
+class ItemManager:
+    def __init__(self):
+        self.items = []
+        self.last_spawn_time = pygame.time.get_ticks()
+
+    # remove expired items and spawn new ones
+    def update(self, room_rect, blocked_rects):
+        now = pygame.time.get_ticks()
+
+        remaining_items = []
+
+        for item in self.items:
+            if item.is_expired() == False:
+                remaining_items.append(item)
+
+        # replace the old list with the new temp_list
+        self.items = remaining_items
+
+        # spawn logic for new items
+        if room_rect is not None:
+            if now - self.last_spawn_time >= ITEM_SPAWN_INTERVAL:
+                pos = _random_position(room_rect, blocked_rects)
+                if pos is not None:
+                    x, y = pos
+                    item_type = random.choice(["coffee", "beer"])
+                    self.items.append(Item(x, y, item_type))
+
+                self.last_spawn_time = now
+
+    # check if player press "e" to buy
+    def check_collect(self, player_rect, keys):
+        if keys[pygame.K_e]:
+            for item in self.items:
+                if player_rect.colliderect(item.rect):
+                    return item
+        return None
+
+    # delete item from list after buying it
+    def remove_item(self, item):
+        if item in self.items:
+            self.items.remove(item)
+
+    # draw all active items
+    def draw(self, screen, cam_x, cam_y):
+        for item in self.items:
+            item.draw(screen, cam_x, cam_y)
+
+    # clear items when changing room
+    def clear(self):
+        self.items = []
+        self.last_spawn_time = pygame.time.get_ticks()

src/settings.py

@@ -6,6 +6,7 @@ from src.map import tile_size
 DESK_WIDTH = 70
 DESK_HEIGHT = 40
 
+
 # --- DOOR ---
 DOOR_WIDTH = 20
 DOOR_HEIGHT = 100
@@ -20,6 +21,7 @@ COLOR_HP_BAR_BG = (50, 50, 50)
 # Valid movement/animation directions.
 Direction = Literal["down", "left", "right", "up"]
 
+
 # Sprite files are grouped by direction.
 # Example: "down" uses sprite_01.png, sprite_02.png, sprite_03.png.
 DIRECTION_FRAMES: Mapping[Direction, Tuple[int, int, int]] = {
@@ -29,21 +31,24 @@ DIRECTION_FRAMES: Mapping[Direction, Tuple[int, int, int]] = {
     "up": (10, 11, 12),
 }
 
+
 # Default drawing size and animation speed.
 DEFAULT_SPRITE_HEIGHT: int = 138
 DEFAULT_FRAME_TIME: float = 0.16
 
 # --- ECTS ---
 START_ECTS_VALUE = 1        # how many ECTS are generated at the beginning
-ECTS_UPDATE_INTERVAL = 1000 # time in ms = 1 sec
+ECTS_UPDATE_INTERVAL = 1000     # time in ms (1000 = 1 sec)
 
 BEER_BOTTLE_ECTS_VALUE = 2
 BEER_COST = 50
 
+
 # --- BUTTONS ---
 COLOR_BUTTON = (0, 255, 0)
 COLOR_BUTTON_HOVER = (200, 255, 0)
 
+
 # --- STARTSCREEN ---
 COLOR_STARTSCREEN_BACKGROUND = ((0, 0, 0))
 COLOR_STARTSCREEN_FONT_TITLE = (0, 255, 0)
@@ -60,6 +65,7 @@ FONT_ENDSCREEN = "Arial"
 COFFEE_COST = 30
 COFFEE_HEAL_VALUE = 30
 
+
 # --- TOWER ---
 TOWER_COST = 150
 PROJECTILE_DMG = 15
@@ -68,11 +74,13 @@ COLOR_PROJECTILE = (200, 200, 0)
 TOWER_TIMER = 30000             # how long the tower stays and attack before it disappears
 
 
-# --- SHOPPING TIMER ---
-ITEM_SHOPPING_TIMER = 10000     # for items like coffee, beer, tower - how long u have time to buy it
+# --- ITEM SPAWN TIMER ---
+ITEM_SPAWN_INTERVAL = 5000      # ms until a new item spawns
+ITEM_SHOPPING_TIMER = 10000     # how long you have time to buy items before they despawn
+ITEM_SIZE = 30
 
 
-# -- ZOMBIE ---
+# --- ZOMBIE ---
 ZOMBIE_EASY_HP = 30
 ZOMBIE_EASY_DMG = 3