A small, simple jungle-themed jump and duck side-scroller

badge/apps/jungle/__init__.py

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+from badgeware import screen, Image, PixelFont, brushes, shapes, io, run
+import random
+
+# Constants
+WIDTH = 160
+HEIGHT = 120
+GROUND_Y = 90
+PLAYER_X = 30
+SCROLL_SPEED = 2
+OBSTACLE_SPAWN_MIN = 70
+OBSTACLE_SPAWN_MAX = 120
+OBSTACLE_REMOVAL_THRESHOLD = -50  # X position at which off-screen obstacles are removed
+AIR_GAP = 8  # Vertical gap above ground that the branch bottom sits at (duck to clear)
+GRASS_PATTERN_WIDTH = 8  # Width of the repeating grass pattern
+
+# Collision box adjustments for forgiving gameplay
+COLLISION_MARGIN = 2  # Pixels reduced from each side of collision boxes
+COLLISION_Y_MARGIN = 2  # Y-offset for standing player collision box
+DUCKING_Y_OFFSET = 10  # Y-offset for ducking player collision box
+DUCKING_SPRITE_Y_OFFSET = 8  # Y-offset for rendering ducking sprite (visual position)
+PLAYER_COLLISION_WIDTH = 16 - (COLLISION_MARGIN * 2)  # Player collision box width (12)
+PLAYER_COLLISION_HEIGHT = 16 - (COLLISION_MARGIN * 2)  # Standing player collision box height (12)
+PLAYER_DUCKING_COLLISION_HEIGHT = 8 - (COLLISION_MARGIN * 2)  # Ducking player collision box height (4)
+
+# Jungle theme colors
+SKY_COLOR = brushes.color(135, 206, 235)  # Sky blue
+GROUND_COLOR = brushes.color(34, 139, 34)  # Forest green
+GRASS_COLOR = brushes.color(50, 205, 50)   # Lime green
+TEXT_COLOR = brushes.color(255, 255, 255)  # White
+GAMEOVER_BG = brushes.color(0, 0, 0, 200)  # Semi-transparent black
+
+# Set up font
+screen.font = PixelFont.load("/system/assets/fonts/ark.ppf")
+
+# Load sprites
+player_img = Image.load("/system/apps/jungle/sprites/player.png")
+log_img = Image.load("/system/apps/jungle/sprites/log.png")
+creature_img = Image.load("/system/apps/jungle/sprites/creature.png")
+branch_img = Image.load("/system/apps/jungle/sprites/branch.png")
+
+# Game state
+state = {
+    "game_state": "playing",  # "playing" or "gameover"
+    "score": 0,
+    "player_y": GROUND_Y - 16,  # Player standing on ground
+    "player_vel_y": 0,
+    "is_jumping": False,
+    "is_ducking": False,
+    "obstacles": [],
+    "next_spawn": OBSTACLE_SPAWN_MIN,
+    "scroll_offset": 0
+}
+
+# Obstacle types: (image, type, ground_height)
+# type: "ground" (jump over) or "air" (duck under)
+# ground_height: for ground obstacles, this should equal sprite height so bottom rests at GROUND_Y
+#   (calculation: y_pos = GROUND_Y - ground_height, so bottom = y_pos + height = GROUND_Y)
+# Coordinate system: y = top of sprite. Collision boxes use margins and offsets.
+# Air obstacles: branch placed with bottom at GROUND_Y - AIR_GAP (90 - 8 = 82)
+# Standing player: player_y = 74 (sprite top), collision box top = 74 + COLLISION_Y_MARGIN = 76,
+#   collision box height = 12, so collision box bottom = 88 (HITS branch at 82)
+# Ducking player: player_y = 74 (sprite top), collision box top = 74 + DUCKING_Y_OFFSET = 84,
+#   collision box height = 4, so collision box bottom = 88 (CLEARS branch at 82)
+OBSTACLE_TYPES = [
+    (log_img, "ground", 12),
+    (creature_img, "ground", 12),
+    (branch_img, "air", 0)  # ground_height not used for air obstacles
+]
+
+def reset_game():
+    """Reset game to initial state"""
+    state["game_state"] = "playing"
+    state["score"] = 0
+    state["player_y"] = GROUND_Y - 16
+    state["player_vel_y"] = 0
+    state["is_jumping"] = False
+    state["is_ducking"] = False
+    state["obstacles"] = []
+    state["next_spawn"] = OBSTACLE_SPAWN_MIN
+    state["scroll_offset"] = 0
+
+def spawn_obstacle():
+    """Spawn a new obstacle, ensuring it's passable"""
+    # Pick random obstacle type
+    img, obs_type, ground_height = random.choice(OBSTACLE_TYPES)
+
+    # Check if last obstacle was an air obstacle
+    last_was_air = False
+    if state["obstacles"]:
+        last_obs = state["obstacles"][-1]
+        if last_obs.get("type") == "air":
+            last_was_air = True
+
+    # Ensure we don't spawn two air obstacles in a row (would be impossible)
+    if last_was_air and obs_type == "air":
+        # Force ground obstacle instead
+        ground_obstacles = [(img, t, h) for img, t, h in OBSTACLE_TYPES if t == "ground"]
+        img, obs_type, ground_height = random.choice(ground_obstacles)
+
+    # Compute spawn Y: ground obstacles rest on ground; air obstacles have fixed bottom at GROUND_Y - AIR_GAP
+    if obs_type == "air":
+        y_pos = GROUND_Y - AIR_GAP - img.height
+    else:
+        y_pos = GROUND_Y - ground_height
+
+    obstacle = {
+        "x": WIDTH,
+        "y": y_pos,
+        "img": img,
+        "type": obs_type,
+        "scored": False
+    }
+    state["obstacles"].append(obstacle)
+    state["next_spawn"] = random.randint(OBSTACLE_SPAWN_MIN, OBSTACLE_SPAWN_MAX)
+
+def check_collision():
+    """Check if player collides with any obstacle"""
+    # Reduced collision box for more forgiving gameplay
+    # Calculate Y position based on ducking state
+    if state["is_ducking"]:
+        collision_y = state["player_y"] + DUCKING_Y_OFFSET
+        collision_h = PLAYER_DUCKING_COLLISION_HEIGHT
+    else:
+        collision_y = state["player_y"] + COLLISION_Y_MARGIN
+        collision_h = PLAYER_COLLISION_HEIGHT
+
+    player_rect = {
+        "x": PLAYER_X + COLLISION_MARGIN,
+        "y": collision_y,
+        "w": PLAYER_COLLISION_WIDTH,
+        "h": collision_h
+    }
+
+    for obs in state["obstacles"]:
+        obs_w = obs["img"].width
+        obs_h = obs["img"].height
+
+        # Reduced obstacle collision box
+        obs_rect = {
+            "x": obs["x"] + COLLISION_MARGIN,
+            "y": obs["y"] + COLLISION_MARGIN,
+            "w": obs_w - (COLLISION_MARGIN * 2),
+            "h": obs_h - (COLLISION_MARGIN * 2)
+        }
+
+        # Check rectangle collision
+        if (player_rect["x"] < obs_rect["x"] + obs_rect["w"] and
+            player_rect["x"] + player_rect["w"] > obs_rect["x"] and
+            player_rect["y"] < obs_rect["y"] + obs_rect["h"] and
+            player_rect["y"] + player_rect["h"] > obs_rect["y"]):
+            return True
+
+    return False
+
+def update():
+    if state["game_state"] == "playing":
+        # Handle jumping
+        if io.BUTTON_UP in io.pressed and not state["is_jumping"]:
+            state["is_jumping"] = True
+            state["player_vel_y"] = -4.5
+
+        # Handle ducking
+        if io.BUTTON_DOWN in io.held and not state["is_jumping"]:
+            state["is_ducking"] = True
+        else:
+            state["is_ducking"] = False
+
+        # Apply gravity
+        if state["is_jumping"]:
+            state["player_vel_y"] += 0.3
+            state["player_y"] += state["player_vel_y"]
+
+            # Check if landed
+            if state["player_y"] >= GROUND_Y - 16:
+                state["player_y"] = GROUND_Y - 16
+                state["is_jumping"] = False
+                state["player_vel_y"] = 0
+
+        # Update obstacles
+        state["scroll_offset"] += SCROLL_SPEED
+        state["next_spawn"] -= SCROLL_SPEED
+
+        # Spawn new obstacle if needed
+        if state["next_spawn"] <= 0:
+            spawn_obstacle()
+
+        # Move obstacles and check scoring
+        for obs in state["obstacles"]:
+            obs["x"] -= SCROLL_SPEED
+
+            # Score point when obstacle passes player
+            if not obs["scored"] and obs["x"] + obs["img"].width < PLAYER_X:
+                obs["scored"] = True
+                state["score"] += 1
+
+        # Remove off-screen obstacles
+        state["obstacles"] = [obs for obs in state["obstacles"] if obs["x"] > OBSTACLE_REMOVAL_THRESHOLD]
+
+        # Check collision
+        if check_collision():
+            state["game_state"] = "gameover"
+
+        # Draw game
+        draw_game()
+
+    elif state["game_state"] == "gameover":
+        # Draw game over screen
+        draw_game()
+        draw_gameover()
+
+        # Press A to restart
+        if io.BUTTON_A in io.pressed:
+            reset_game()
+
+def draw_game():
+    # Draw sky
+    screen.brush = SKY_COLOR
+    screen.clear()
+
+    # Draw ground
+    screen.brush = GROUND_COLOR
+    screen.draw(shapes.rectangle(0, GROUND_Y, WIDTH, HEIGHT - GROUND_Y))
+
+    # Draw grass pattern on ground
+    screen.brush = GRASS_COLOR
+    offset = state["scroll_offset"] % GRASS_PATTERN_WIDTH
+    for i in range(0, WIDTH, GRASS_PATTERN_WIDTH):
+        screen.draw(shapes.rectangle(i - offset, GROUND_Y, 4, 2))
+
+    # Draw obstacles
+    for obs in state["obstacles"]:
+        x_pos = int(obs["x"])
+        y_pos = int(obs["y"])
+        # Ensure coordinates are integers to prevent rendering artifacts
+        screen.blit(obs["img"], x_pos, y_pos)
+
+    # Draw player
+    player_y = int(state["player_y"])
+    if state["is_ducking"]:
+        # Draw ducking (squashed sprite)
+        # DUCKING_SPRITE_Y_OFFSET (8) positions the squashed sprite (16px->8px) visually on ground.
+        # DUCKING_Y_OFFSET (10) positions collision box top for reduced hit area during ducking.
+        screen.scale_blit(player_img, PLAYER_X, int(player_y + DUCKING_SPRITE_Y_OFFSET), 16, 8)
+    else:
+        screen.blit(player_img, PLAYER_X, player_y)
+
+    # Draw score
+    screen.brush = TEXT_COLOR
+    screen.text(f"Score: {state['score']}", 5, 5)
+
+def draw_gameover():
+    # Semi-transparent overlay
+    screen.brush = GAMEOVER_BG
+    screen.draw(shapes.rectangle(20, 35, 120, 50))
+
+    # Game over text
+    screen.brush = TEXT_COLOR
+    screen.text("GAME OVER!", 45, 45)
+    screen.text(f"Score: {state['score']}", 52, 60)
+    screen.text("Press A to restart", 25, 75)
+
+if __name__ == "__main__":
+    run(update)