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McRogueFace/docs/api_reference_dynamic.html
John McCardle f4343e1e82 Squashed commit of the following: [alpha_presentable] 
Author: John McCardle <mccardle.john@gmail.com>
Co-Authored-By: Claude <noreply@anthropic.com>

commit dc47f2474c7b2642d368f9772894aed857527807
    the UIEntity rant

commit 673ca8e1b089ea670257fc04ae1a676ed95a40ed
    I forget when these tests were written, but I want them in the squash merge

commit 70c71565c684fa96e222179271ecb13a156d80ad
    Fix UI object segfault by switching from managed to manual weakref management

    The UI types (Frame, Caption, Sprite, Grid, Entity) were using
    Py_TPFLAGS_MANAGED_WEAKREF while also trying to manually create weakrefs
    for the PythonObjectCache. This is fundamentally incompatible - when
    Python manages weakrefs internally, PyWeakref_NewRef() cannot access the
    weakref list properly, causing segfaults.

    Changed all UI types to use manual weakref management (like PyTimer):
    - Restored weakreflist field in all UI type structures
    - Removed Py_TPFLAGS_MANAGED_WEAKREF from all UI type flags
    - Added tp_weaklistoffset for all UI types in module initialization
    - Initialize weakreflist=NULL in tp_new and init methods
    - Call PyObject_ClearWeakRefs() in dealloc functions

    This allows the PythonObjectCache to continue working correctly,
    maintaining Python object identity for C++ objects across the boundary.

    Fixes segfault when creating UI objects (e.g., Caption, Grid) that was
    preventing tutorial scripts from running.

This is the bulk of the required behavior for Issue #126.
that issure isn't ready for closure yet; several other sub-issues left.
    closes #110
    mention issue #109 - resolves some __init__ related nuisances

commit 3dce3ec539ae99e32d869007bf3f49d03e4e2f89
    Refactor timer system for cleaner architecture and enhanced functionality

    Major improvements to the timer system:
    - Unified all timer logic in the Timer class (C++)
    - Removed PyTimerCallable subclass, now using PyCallable directly
    - Timer objects are now passed to callbacks as first argument
    - Added 'once' parameter for one-shot timers that auto-stop
    - Implemented proper PythonObjectCache integration with weakref support

    API enhancements:
    - New callback signature: callback(timer, runtime) instead of just (runtime)
    - Timer objects expose: name, interval, remaining, paused, active, once properties
    - Methods: pause(), resume(), cancel(), restart()
    - Comprehensive documentation with examples
    - Enhanced repr showing timer state (active/paused/once/remaining time)

    This cleanup follows the UIEntity/PyUIEntity pattern and makes the timer
    system more Pythonic while maintaining backward compatibility through
    the legacy setTimer/delTimer API.

    closes #121

commit 145834cfc31b8dabc4cb3591b9cb4ed99fc8b964
    Implement Python object cache to preserve derived types in collections

    Add a global cache system that maintains weak references to Python objects,
    ensuring that derived Python classes maintain their identity when stored in
    and retrieved from C++ collections.

    Key changes:
    - Add PythonObjectCache singleton with serial number system
    - Each cacheable object (UIDrawable, UIEntity, Timer, Animation) gets unique ID
    - Cache stores weak references to prevent circular reference memory leaks
    - Update all UI type definitions to support weak references (Py_TPFLAGS_MANAGED_WEAKREF)
    - Enable subclassing for all UI types (Py_TPFLAGS_BASETYPE)
    - Collections check cache before creating new Python wrappers
    - Register objects in cache during __init__ methods
    - Clean up cache entries in C++ destructors

    This ensures that Python code like:
    ```python
    class MyFrame(mcrfpy.Frame):
        def __init__(self):
            super().__init__()
            self.custom_data = "preserved"

    frame = MyFrame()
    scene.ui.append(frame)
    retrieved = scene.ui[0]  # Same MyFrame instance with custom_data intact
    ```

    Works correctly, with retrieved maintaining the derived type and custom attributes.

    Closes #112

commit c5e7e8e298
    Update test demos for new Python API and entity system

    - Update all text input demos to use new Entity constructor signature
    - Fix pathfinding showcase to work with new entity position handling
    - Remove entity_waypoints tracking in favor of simplified movement
    - Delete obsolete exhaustive_api_demo.py (superseded by newer demos)
    - Adjust entity creation calls to match Entity((x, y), texture, sprite_index) pattern

commit 6d29652ae7
    Update animation demo suite with crash fixes and improvements

    - Add warnings about AnimationManager segfault bug in sizzle_reel_final.py
    - Create sizzle_reel_final_fixed.py that works around the crash by hiding objects instead of removing them
    - Increase font sizes for better visibility in demos
    - Extend demo durations for better showcase of animations
    - Remove debug prints from animation_sizzle_reel_working.py
    - Minor cleanup and improvements to all animation demos

commit a010e5fa96
    Update game scripts for new Python API

    - Convert entity position access from tuple to x/y properties
    - Update caption size property to font_size
    - Fix grid boundary checks to use grid_size instead of exceptions
    - Clean up demo timer on menu exit to prevent callbacks

    These changes adapt the game scripts to work with the new standardized
    Python API constructors and property names.

commit 9c8d6c4591
    Fix click event z-order handling in PyScene

    Changed click detection to properly respect z-index by:
    - Sorting ui_elements in-place when needed (same as render order)
    - Using reverse iterators to check highest z-index elements first
    - This ensures top-most elements receive clicks before lower ones

commit dcd1b0ca33
    Add roguelike tutorial implementation files

    Implement Parts 0-2 of the classic roguelike tutorial adapted for McRogueFace:
    - Part 0: Basic grid setup and tile rendering
    - Part 1: Drawing '@' symbol and basic movement
    - Part 1b: Variant with sprite-based player
    - Part 2: Entity system and NPC implementation with three movement variants:
      - part_2.py: Standard implementation
      - part_2-naive.py: Naive movement approach
      - part_2-onemovequeued.py: Queued movement system

    Includes tutorial assets:
    - tutorial2.png: Tileset for dungeon tiles
    - tutorial_hero.png: Player sprite sheet

commit 6813fb5129
    Standardize Python API constructors and remove PyArgHelpers

    - Remove PyArgHelpers.h and all macro-based argument parsing
    - Convert all UI class constructors to use PyArg_ParseTupleAndKeywords
    - Standardize constructor signatures across UICaption, UIEntity, UIFrame, UIGrid, and UISprite
    - Replace PYARGHELPER_SINGLE/MULTI macros with explicit argument parsing
    - Improve error messages and argument validation
    - Maintain backward compatibility with existing Python code

    This change improves code maintainability and consistency across the Python API.

commit 6f67fbb51e
    Fix animation callback crashes from iterator invalidation (#119)

    Resolved segfaults caused by creating new animations from within
    animation callbacks. The issue was iterator invalidation in
    AnimationManager::update() when callbacks modified the active
    animations vector.

    Changes:
    - Add deferred animation queue to AnimationManager
    - New animations created during update are queued and added after
    - Set isUpdating flag to track when in update loop
    - Properly handle Animation destructor during callback execution
    - Add clearCallback() method for safe cleanup scenarios

    This fixes the "free(): invalid pointer" and "malloc(): unaligned
    fastbin chunk detected" errors that occurred with rapid animation
    creation in callbacks.

commit eb88c7b3aa
    Add animation completion callbacks (#119)

    Implement callbacks that fire when animations complete, enabling direct
    causality between animation end and game state changes. This eliminates
    race conditions from parallel timer workarounds.

    - Add optional callback parameter to Animation constructor
    - Callbacks execute synchronously when animation completes
    - Proper Python reference counting with GIL safety
    - Callbacks receive (anim, target) parameters (currently None)
    - Exception handling prevents crashes from Python errors

    Example usage:
    ```python
    def on_complete(anim, target):
        player_moving = False

    anim = mcrfpy.Animation("x", 300.0, 1.0, "easeOut", callback=on_complete)
    anim.start(player)
    ```

    closes #119

commit 9fb428dd01
    Update ROADMAP with GitHub issue numbers (#111-#125)

    Added issue numbers from GitHub tracker to roadmap items:
    - #111: Grid Click Events Broken in Headless
    - #112: Object Splitting Bug (Python type preservation)
    - #113: Batch Operations for Grid
    - #114: CellView API
    - #115: SpatialHash Implementation
    - #116: Dirty Flag System
    - #117: Memory Pool for Entities
    - #118: Scene as Drawable
    - #119: Animation Completion Callbacks
    - #120: Animation Property Locking
    - #121: Timer Object System
    - #122: Parent-Child UI System
    - #123: Grid Subgrid System
    - #124: Grid Point Animation
    - #125: GitHub Issues Automation

    Also updated existing references:
    - #101/#110: Constructor standardization
    - #109: Vector class indexing

    Note: Tutorial-specific items and Python-implementable features
    (input queue, collision reservation) are not tracked as engine issues.

commit 062e4dadc4
    Fix animation segfaults with RAII weak_ptr implementation

    Resolved two critical segmentation faults in AnimationManager:
    1. Race condition when creating multiple animations in timer callbacks
    2. Exit crash when animations outlive their target objects

    Changes:
    - Replace raw pointers with std::weak_ptr for automatic target invalidation
    - Add Animation::complete() to jump animations to final value
    - Add Animation::hasValidTarget() to check if target still exists
    - Update AnimationManager to auto-remove invalid animations
    - Add AnimationManager::clear() call to GameEngine::cleanup()
    - Update Python bindings to pass shared_ptr instead of raw pointers

    This ensures animations can never reference destroyed objects, following
    proper RAII principles. Tested with sizzle_reel_final.py and stress
    tests creating/destroying hundreds of animated objects.

commit 98fc49a978
    Directory structure cleanup and organization overhaul
2025-07-15 21:30:49 -04:00

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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>McRogueFace API Reference</title>
<style>
body {
font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
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</head>
<body>
<div class="container">
<h1>McRogueFace API Reference</h1>
<p><em>Generated on 2025-07-15 21:28:24</em></p>
<p><em>This documentation was dynamically generated from the compiled module.</em></p>
<div class="toc">
<h2>Table of Contents</h2>
<ul>
<li><a href="#functions">Functions</a></li>
<li><a href="#classes">Classes</a>
<ul>
<li><a href="#Animation">Animation</a></li>
<li><a href="#Caption">Caption</a></li>
<li><a href="#Color">Color</a></li>
<li><a href="#Drawable">Drawable</a></li>
<li><a href="#Entity">Entity</a></li>
<li><a href="#EntityCollection">EntityCollection</a></li>
<li><a href="#Font">Font</a></li>
<li><a href="#Frame">Frame</a></li>
<li><a href="#Grid">Grid</a></li>
<li><a href="#GridPoint">GridPoint</a></li>
<li><a href="#GridPointState">GridPointState</a></li>
<li><a href="#Scene">Scene</a></li>
<li><a href="#Sprite">Sprite</a></li>
<li><a href="#Texture">Texture</a></li>
<li><a href="#Timer">Timer</a></li>
<li><a href="#UICollection">UICollection</a></li>
<li><a href="#UICollectionIter">UICollectionIter</a></li>
<li><a href="#UIEntityCollectionIter">UIEntityCollectionIter</a></li>
<li><a href="#Vector">Vector</a></li>
<li><a href="#Window">Window</a></li>
</ul>
</li>
<li><a href="#constants">Constants</a></li>
</ul>
</div>
<h2 id="functions">Functions</h2>
<div class="method-section">
<h3><code class="function-signature">createScenecreateScene(name: str) -> None</code></h3>
<p>Create a new empty scene.
Note:</p>
<h4>Arguments:</h4>
<ul>
<li><span class='arg-name'>name</span>: Unique name for the new scene</li>
<li><span class='arg-name'>ValueError</span>: If a scene with this name already exists</li>
</ul>
</div>
<div class="method-section">
<h3><code class="function-signature">createSoundBuffercreateSoundBuffer(filename: str) -> int</code></h3>
<p>Load a sound effect from a file and return its buffer ID.</p>
<h4>Arguments:</h4>
<ul>
<li><span class='arg-name'>filename</span>: Path to the sound file (WAV, OGG, FLAC)</li>
</ul>
<p><span class='returns'>Returns:</span> int: Buffer ID for use with playSound() RuntimeError: If the file cannot be loaded</p>
</div>
<div class="method-section">
<h3><code class="function-signature">currentScenecurrentScene() -> str</code></h3>
<p>Get the name of the currently active scene.</p>
<p><span class='returns'>Returns:</span> str: Name of the current scene</p>
</div>
<div class="method-section">
<h3><code class="function-signature">delTimerdelTimer(name: str) -> None</code></h3>
<p>Stop and remove a timer.
Note:</p>
<h4>Arguments:</h4>
<ul>
<li><span class='arg-name'>name</span>: Timer identifier to remove</li>
</ul>
</div>
<div class="method-section">
<h3><code class="function-signature">exitexit() -> None</code></h3>
<p>Cleanly shut down the game engine and exit the application.
Note:</p>
</div>
<div class="method-section">
<h3><code class="function-signature">findfind(name: str, scene: str = None) -> UIDrawable | None</code></h3>
<p>Find the first UI element with the specified name.
Note:</p>
<h4>Arguments:</h4>
<ul>
<li><span class='arg-name'>name</span>: Exact name to search for</li>
<li><span class='arg-name'>scene</span>: Scene to search in (default: current scene)</li>
</ul>
<p><span class='returns'>Returns:</span> Frame, Caption, Sprite, Grid, or Entity if found; None otherwise Searches scene UI elements and entities within grids.</p>
</div>
<div class="method-section">
<h3><code class="function-signature">findAllfindAll(pattern: str, scene: str = None) -> list</code></h3>
<p>Find all UI elements matching a name pattern.</p>
<h4>Arguments:</h4>
<ul>
<li><span class='arg-name'>pattern</span>: Name pattern with optional wildcards (* matches any characters)</li>
<li><span class='arg-name'>scene</span>: Scene to search in (default: current scene)</li>
</ul>
<p><span class='returns'>Returns:</span> list: All matching UI elements and entities</p>
<h4>Example:</h4>
<pre><code>findAll(&#x27;enemy*&#x27;) # Find all elements starting with &#x27;enemy&#x27;
findAll(&#x27;*_button&#x27;) # Find all elements ending with &#x27;_button&#x27;</code></pre>
</div>
<div class="method-section">
<h3><code class="function-signature">getMetricsgetMetrics() -> dict</code></h3>
<p>Get current performance metrics.</p>
<p><span class='returns'>Returns:</span> dict: Performance data with keys: - frame_time: Last frame duration in seconds - avg_frame_time: Average frame time - fps: Frames per second - draw_calls: Number of draw calls - ui_elements: Total UI element count - visible_elements: Visible element count - current_frame: Frame counter - runtime: Total runtime in seconds</p>
</div>
<div class="method-section">
<h3><code class="function-signature">getMusicVolumegetMusicVolume() -> int</code></h3>
<p>Get the current music volume level.</p>
<p><span class='returns'>Returns:</span> int: Current volume (0-100)</p>
</div>
<div class="method-section">
<h3><code class="function-signature">getSoundVolumegetSoundVolume() -> int</code></h3>
<p>Get the current sound effects volume level.</p>
<p><span class='returns'>Returns:</span> int: Current volume (0-100)</p>
</div>
<div class="method-section">
<h3><code class="function-signature">keypressScenekeypressScene(handler: callable) -> None</code></h3>
<p>Set the keyboard event handler for the current scene.</p>
<h4>Arguments:</h4>
<ul>
<li><span class='arg-name'>handler</span>: Callable that receives (key_name: str, is_pressed: bool)</li>
</ul>
<h4>Example:</h4>
<pre><code>def on_key(key, pressed):
if key == &#x27;A&#x27; and pressed:
print(&#x27;A key pressed&#x27;)
mcrfpy.keypressScene(on_key)</code></pre>
</div>
<div class="method-section">
<h3><code class="function-signature">loadMusicloadMusic(filename: str) -> None</code></h3>
<p>Load and immediately play background music from a file.
Note:</p>
<h4>Arguments:</h4>
<ul>
<li><span class='arg-name'>filename</span>: Path to the music file (WAV, OGG, FLAC)</li>
</ul>
</div>
<div class="method-section">
<h3><code class="function-signature">playSoundplaySound(buffer_id: int) -> None</code></h3>
<p>Play a sound effect using a previously loaded buffer.</p>
<h4>Arguments:</h4>
<ul>
<li><span class='arg-name'>buffer_id</span>: Sound buffer ID returned by createSoundBuffer()</li>
<li><span class='arg-name'>RuntimeError</span>: If the buffer ID is invalid</li>
</ul>
</div>
<div class="method-section">
<h3><code class="function-signature">sceneUIsceneUI(scene: str = None) -> list</code></h3>
<p>Get all UI elements for a scene.</p>
<h4>Arguments:</h4>
<ul>
<li><span class='arg-name'>scene</span>: Scene name. If None, uses current scene</li>
</ul>
<p><span class='returns'>Returns:</span> list: All UI elements (Frame, Caption, Sprite, Grid) in the scene KeyError: If the specified scene doesn&#x27;t exist</p>
</div>
<div class="method-section">
<h3><code class="function-signature">setMusicVolumesetMusicVolume(volume: int) -> None</code></h3>
<p>Set the global music volume.</p>
<h4>Arguments:</h4>
<ul>
<li><span class='arg-name'>volume</span>: Volume level from 0 (silent) to 100 (full volume)</li>
</ul>
</div>
<div class="method-section">
<h3><code class="function-signature">setScalesetScale(multiplier: float) -> None</code></h3>
<p>Scale the game window size.
Note:</p>
<h4>Arguments:</h4>
<ul>
<li><span class='arg-name'>multiplier</span>: Scale factor (e.g., 2.0 for double size)</li>
</ul>
</div>
<div class="method-section">
<h3><code class="function-signature">setScenesetScene(scene: str, transition: str = None, duration: float = 0.0) -> None</code></h3>
<p>Switch to a different scene with optional transition effect.</p>
<h4>Arguments:</h4>
<ul>
<li><span class='arg-name'>scene</span>: Name of the scene to switch to</li>
<li><span class='arg-name'>transition</span>: Transition type (&#x27;fade&#x27;, &#x27;slide_left&#x27;, &#x27;slide_right&#x27;, &#x27;slide_up&#x27;, &#x27;slide_down&#x27;)</li>
<li><span class='arg-name'>duration</span>: Transition duration in seconds (default: 0.0 for instant)</li>
<li><span class='arg-name'>KeyError</span>: If the scene doesn&#x27;t exist</li>
<li><span class='arg-name'>ValueError</span>: If the transition type is invalid</li>
</ul>
</div>
<div class="method-section">
<h3><code class="function-signature">setSoundVolumesetSoundVolume(volume: int) -> None</code></h3>
<p>Set the global sound effects volume.</p>
<h4>Arguments:</h4>
<ul>
<li><span class='arg-name'>volume</span>: Volume level from 0 (silent) to 100 (full volume)</li>
</ul>
</div>
<div class="method-section">
<h3><code class="function-signature">setTimersetTimer(name: str, handler: callable, interval: int) -> None</code></h3>
<p>Create or update a recurring timer.
Note:</p>
<h4>Arguments:</h4>
<ul>
<li><span class='arg-name'>name</span>: Unique identifier for the timer</li>
<li><span class='arg-name'>handler</span>: Function called with (runtime: float) parameter</li>
<li><span class='arg-name'>interval</span>: Time between calls in milliseconds</li>
</ul>
</div>
<h2 id='classes'>Classes</h2>
<div class="method-section">
<h3 id="Animation"><span class="class-name">Animation</span></h3>
<p>Animation object for animating UI properties</p>
<h4>Methods:</h4>
<div style="margin-left: 20px; margin-bottom: 15px;">
<h5><code class="method-name">completecomplete() -> None</code></h5>
<p>Complete the animation immediately by jumping to the final value.</p>
</div>
<div style="margin-left: 20px; margin-bottom: 15px;">
<h5><code class="method-name">get_current_value(...)</code></h5>
<p>Get the current interpolated value</p>
</div>
<div style="margin-left: 20px; margin-bottom: 15px;">
<h5><code class="method-name">hasValidTargethasValidTarget() -> bool</code></h5>
<p>Check if the animation still has a valid target.</p>
<p style='margin-left: 20px;'><span class='returns'>Returns:</span> True if the target still exists, False if it was destroyed.</p>
</div>
<div style="margin-left: 20px; margin-bottom: 15px;">
<h5><code class="method-name">startstart(target) -> None</code></h5>
<p>Start the animation on a target UI element.
Note:</p>
<div style='margin-left: 20px;'>
<div><span class='arg-name'>target</span>: The UI element to animate (Frame, Caption, Sprite, Grid, or Entity)</div>
</div>
</div>
<div style="margin-left: 20px; margin-bottom: 15px;">
<h5><code class="method-name">updateUpdate the animation by deltaTime (returns True if still running)</code></h5>
</div>
</div>
<div class="method-section">
<h3 id="Caption"><span class="class-name">Caption</span></h3>
<p><em>Inherits from: Drawable</em></p>
<p>Caption(pos=None, font=None, text=&#x27;&#x27;, **kwargs)
A text display UI element with customizable font and styling.
Args:
pos (tuple, optional): Position as (x, y) tuple. Default: (0, 0)
font (Font, optional): Font object for text rendering. Default: engine default font
text (str, optional): The text content to display. Default: &#x27;&#x27;
Keyword Args:
fill_color (Color): Text fill color. Default: (255, 255, 255, 255)
outline_color (Color): Text outline color. Default: (0, 0, 0, 255)
outline (float): Text outline thickness. Default: 0
font_size (float): Font size in points. Default: 16
click (callable): Click event handler. Default: None
visible (bool): Visibility state. Default: True
opacity (float): Opacity (0.0-1.0). Default: 1.0
z_index (int): Rendering order. Default: 0
name (str): Element name for finding. Default: None
x (float): X position override. Default: 0
y (float): Y position override. Default: 0
Attributes:
text (str): The displayed text content
x, y (float): Position in pixels
pos (Vector): Position as a Vector object
font (Font): Font used for rendering
font_size (float): Font size in points
fill_color, outline_color (Color): Text appearance
outline (float): Outline thickness
click (callable): Click event handler
visible (bool): Visibility state
opacity (float): Opacity value
z_index (int): Rendering order
name (str): Element name
w, h (float): Read-only computed size based on text and font</p>
<h4>Methods:</h4>
<div style="margin-left: 20px; margin-bottom: 15px;">
<h5><code class="method-name">get_boundsGet bounding box as (x, y, width, height)</code></h5>
</div>
<div style="margin-left: 20px; margin-bottom: 15px;">
<h5><code class="method-name">moveMove by relative offset (dx, dy)</code></h5>
</div>
<div style="margin-left: 20px; margin-bottom: 15px;">
<h5><code class="method-name">resizeResize to new dimensions (width, height)</code></h5>
</div>
</div>
<div class="method-section">
<h3 id="Color"><span class="class-name">Color</span></h3>
<p>SFML Color Object</p>
<h4>Methods:</h4>
<div style="margin-left: 20px; margin-bottom: 15px;">
<h5><code class="method-name">from_hexCreate Color from hex string (e.g., '#FF0000' or 'FF0000')</code></h5>
</div>
<div style="margin-left: 20px; margin-bottom: 15px;">
<h5><code class="method-name">lerp(...)</code></h5>
<p>Linearly interpolate between this color and another</p>
</div>
<div style="margin-left: 20px; margin-bottom: 15px;">
<h5><code class="method-name">to_hex(...)</code></h5>
<p>Convert Color to hex string</p>
</div>
</div>
<div class="method-section">
<h3 id="Drawable"><span class="class-name">Drawable</span></h3>
<p>Base class for all drawable UI elements</p>
<h4>Methods:</h4>
<div style="margin-left: 20px; margin-bottom: 15px;">
<h5><code class="method-name">get_boundsGet bounding box as (x, y, width, height)</code></h5>
</div>
<div style="margin-left: 20px; margin-bottom: 15px;">
<h5><code class="method-name">moveMove by relative offset (dx, dy)</code></h5>
</div>
<div style="margin-left: 20px; margin-bottom: 15px;">
<h5><code class="method-name">resizeResize to new dimensions (width, height)</code></h5>
</div>
</div>
<div class="method-section">
<h3 id="Entity"><span class="class-name">Entity</span></h3>
<p>Entity(grid_pos=None, texture=None, sprite_index=0, **kwargs)
A game entity that exists on a grid with sprite rendering.
Args:
grid_pos (tuple, optional): Grid position as (x, y) tuple. Default: (0, 0)
texture (Texture, optional): Texture object for sprite. Default: default texture
sprite_index (int, optional): Index into texture atlas. Default: 0
Keyword Args:
grid (Grid): Grid to attach entity to. Default: None
visible (bool): Visibility state. Default: True
opacity (float): Opacity (0.0-1.0). Default: 1.0
name (str): Element name for finding. Default: None
x (float): X grid position override. Default: 0
y (float): Y grid position override. Default: 0
Attributes:
pos (tuple): Grid position as (x, y) tuple
x, y (float): Grid position coordinates
draw_pos (tuple): Pixel position for rendering
gridstate (GridPointState): Visibility state for grid points
sprite_index (int): Current sprite index
visible (bool): Visibility state
opacity (float): Opacity value
name (str): Element name</p>
<h4>Methods:</h4>
<div style="margin-left: 20px; margin-bottom: 15px;">
<h5><code class="method-name">at(...)</code></h5>
</div>
<div style="margin-left: 20px; margin-bottom: 15px;">
<h5><code class="method-name">die(...)</code></h5>
<p>Remove this entity from its grid</p>
</div>
<div style="margin-left: 20px; margin-bottom: 15px;">
<h5><code class="method-name">get_boundsGet bounding box as (x, y, width, height)</code></h5>
</div>
<div style="margin-left: 20px; margin-bottom: 15px;">
<h5><code class="method-name">index(...)</code></h5>
<p>Return the index of this entity in its grid&#x27;s entity collection</p>
</div>
<div style="margin-left: 20px; margin-bottom: 15px;">
<h5><code class="method-name">moveMove by relative offset (dx, dy)</code></h5>
</div>
<div style="margin-left: 20px; margin-bottom: 15px;">
<h5><code class="method-name">path_topath_to(x: int, y: int) -> bool</code></h5>
<p>Find and follow path to target position using A* pathfinding.</p>
<div style='margin-left: 20px;'>
<div><span class='arg-name'>x</span>: Target X coordinate</div>
<div><span class='arg-name'>y</span>: Target Y coordinate</div>
</div>
<p style='margin-left: 20px;'><span class='returns'>Returns:</span> True if a path was found and the entity started moving, False otherwise</p>
</div>
<div style="margin-left: 20px; margin-bottom: 15px;">
<h5><code class="method-name">resizeResize to new dimensions (width, height)</code></h5>
</div>
<div style="margin-left: 20px; margin-bottom: 15px;">
<h5><code class="method-name">update_visibilityupdate_visibility() -> None</code></h5>
<p>Update entity&#x27;s visibility state based on current FOV.
Recomputes which cells are visible from the entity&#x27;s position and updates
the entity&#x27;s gridstate to track explored areas. This is called automatically
when the entity moves if it has a grid with perspective set.</p>
</div>
</div>
<div class="method-section">
<h3 id="EntityCollection"><span class="class-name">EntityCollection</span></h3>
<p>Iterable, indexable collection of Entities</p>
<h4>Methods:</h4>
<div style="margin-left: 20px; margin-bottom: 15px;">
<h5><code class="method-name">append(...)</code></h5>
</div>
<div style="margin-left: 20px; margin-bottom: 15px;">
<h5><code class="method-name">count(...)</code></h5>
</div>
<div style="margin-left: 20px; margin-bottom: 15px;">
<h5><code class="method-name">extend(...)</code></h5>
</div>
<div style="margin-left: 20px; margin-bottom: 15px;">
<h5><code class="method-name">index(...)</code></h5>
</div>
<div style="margin-left: 20px; margin-bottom: 15px;">
<h5><code class="method-name">remove(...)</code></h5>
</div>
</div>
<div class="method-section">
<h3 id="Font"><span class="class-name">Font</span></h3>
<p>SFML Font Object</p>
<h4>Methods:</h4>
</div>
<div class="method-section">
<h3 id="Frame"><span class="class-name">Frame</span></h3>
<p><em>Inherits from: Drawable</em></p>
<p>Frame(pos=None, size=None, **kwargs)
A rectangular frame UI element that can contain other drawable elements.
Args:
pos (tuple, optional): Position as (x, y) tuple. Default: (0, 0)
size (tuple, optional): Size as (width, height) tuple. Default: (0, 0)
Keyword Args:
fill_color (Color): Background fill color. Default: (0, 0, 0, 128)
outline_color (Color): Border outline color. Default: (255, 255, 255, 255)
outline (float): Border outline thickness. Default: 0
click (callable): Click event handler. Default: None
children (list): Initial list of child drawable elements. Default: None
visible (bool): Visibility state. Default: True
opacity (float): Opacity (0.0-1.0). Default: 1.0
z_index (int): Rendering order. Default: 0
name (str): Element name for finding. Default: None
x (float): X position override. Default: 0
y (float): Y position override. Default: 0
w (float): Width override. Default: 0
h (float): Height override. Default: 0
clip_children (bool): Whether to clip children to frame bounds. Default: False
Attributes:
x, y (float): Position in pixels
w, h (float): Size in pixels
pos (Vector): Position as a Vector object
fill_color, outline_color (Color): Visual appearance
outline (float): Border thickness
click (callable): Click event handler
children (list): Collection of child drawable elements
visible (bool): Visibility state
opacity (float): Opacity value
z_index (int): Rendering order
name (str): Element name
clip_children (bool): Whether to clip children to frame bounds</p>
<h4>Methods:</h4>
<div style="margin-left: 20px; margin-bottom: 15px;">
<h5><code class="method-name">get_boundsGet bounding box as (x, y, width, height)</code></h5>
</div>
<div style="margin-left: 20px; margin-bottom: 15px;">
<h5><code class="method-name">moveMove by relative offset (dx, dy)</code></h5>
</div>
<div style="margin-left: 20px; margin-bottom: 15px;">
<h5><code class="method-name">resizeResize to new dimensions (width, height)</code></h5>
</div>
</div>
<div class="method-section">
<h3 id="Grid"><span class="class-name">Grid</span></h3>
<p><em>Inherits from: Drawable</em></p>
<p>Grid(pos=None, size=None, grid_size=None, texture=None, **kwargs)
A grid-based UI element for tile-based rendering and entity management.
Args:
pos (tuple, optional): Position as (x, y) tuple. Default: (0, 0)
size (tuple, optional): Size as (width, height) tuple. Default: auto-calculated from grid_size
grid_size (tuple, optional): Grid dimensions as (grid_x, grid_y) tuple. Default: (2, 2)
texture (Texture, optional): Texture containing tile sprites. Default: default texture
Keyword Args:
fill_color (Color): Background fill color. Default: None
click (callable): Click event handler. Default: None
center_x (float): X coordinate of center point. Default: 0
center_y (float): Y coordinate of center point. Default: 0
zoom (float): Zoom level for rendering. Default: 1.0
perspective (int): Entity perspective index (-1 for omniscient). Default: -1
visible (bool): Visibility state. Default: True
opacity (float): Opacity (0.0-1.0). Default: 1.0
z_index (int): Rendering order. Default: 0
name (str): Element name for finding. Default: None
x (float): X position override. Default: 0
y (float): Y position override. Default: 0
w (float): Width override. Default: auto-calculated
h (float): Height override. Default: auto-calculated
grid_x (int): Grid width override. Default: 2
grid_y (int): Grid height override. Default: 2
Attributes:
x, y (float): Position in pixels
w, h (float): Size in pixels
pos (Vector): Position as a Vector object
size (tuple): Size as (width, height) tuple
center (tuple): Center point as (x, y) tuple
center_x, center_y (float): Center point coordinates
zoom (float): Zoom level for rendering
grid_size (tuple): Grid dimensions (width, height) in tiles
grid_x, grid_y (int): Grid dimensions
texture (Texture): Tile texture atlas
fill_color (Color): Background color
entities (EntityCollection): Collection of entities in the grid
perspective (int): Entity perspective index
click (callable): Click event handler
visible (bool): Visibility state
opacity (float): Opacity value
z_index (int): Rendering order
name (str): Element name</p>
<h4>Methods:</h4>
<div style="margin-left: 20px; margin-bottom: 15px;">
<h5><code class="method-name">at(...)</code></h5>
</div>
<div style="margin-left: 20px; margin-bottom: 15px;">
<h5><code class="method-name">compute_astar_pathcompute_astar_path(x1: int, y1: int, x2: int, y2: int, diagonal_cost: float = 1.41) -> List[Tuple[int, int]]</code></h5>
<p>Compute A* path between two points.</p>
<div style='margin-left: 20px;'>
<div><span class='arg-name'>x1</span>: Starting X coordinate</div>
<div><span class='arg-name'>y1</span>: Starting Y coordinate</div>
<div><span class='arg-name'>x2</span>: Target X coordinate</div>
<div><span class='arg-name'>y2</span>: Target Y coordinate</div>
<div><span class='arg-name'>diagonal_cost</span>: Cost of diagonal movement (default: 1.41)</div>
</div>
<p style='margin-left: 20px;'><span class='returns'>Returns:</span> List of (x, y) tuples representing the path, empty list if no path exists</p>
</div>
<div style="margin-left: 20px; margin-bottom: 15px;">
<h5><code class="method-name">compute_dijkstracompute_dijkstra(root_x: int, root_y: int, diagonal_cost: float = 1.41) -> None</code></h5>
<p>Compute Dijkstra map from root position.</p>
<div style='margin-left: 20px;'>
<div><span class='arg-name'>root_x</span>: X coordinate of the root/target</div>
<div><span class='arg-name'>root_y</span>: Y coordinate of the root/target</div>
<div><span class='arg-name'>diagonal_cost</span>: Cost of diagonal movement (default: 1.41)</div>
</div>
</div>
<div style="margin-left: 20px; margin-bottom: 15px;">
<h5><code class="method-name">compute_fovcompute_fov(x: int, y: int, radius: int = 0, light_walls: bool = True, algorithm: int = FOV_BASIC) -> None</code></h5>
<p>Compute field of view from a position.</p>
<div style='margin-left: 20px;'>
<div><span class='arg-name'>x</span>: X coordinate of the viewer</div>
<div><span class='arg-name'>y</span>: Y coordinate of the viewer</div>
<div><span class='arg-name'>radius</span>: Maximum view distance (0 = unlimited)</div>
<div><span class='arg-name'>light_walls</span>: Whether walls are lit when visible</div>
<div><span class='arg-name'>algorithm</span>: FOV algorithm to use (FOV_BASIC, FOV_DIAMOND, FOV_SHADOW, FOV_PERMISSIVE_0-8)</div>
</div>
</div>
<div style="margin-left: 20px; margin-bottom: 15px;">
<h5><code class="method-name">find_pathfind_path(x1: int, y1: int, x2: int, y2: int, diagonal_cost: float = 1.41) -> List[Tuple[int, int]]</code></h5>
<p>Find A* path between two points.</p>
<div style='margin-left: 20px;'>
<div><span class='arg-name'>x1</span>: Starting X coordinate</div>
<div><span class='arg-name'>y1</span>: Starting Y coordinate</div>
<div><span class='arg-name'>x2</span>: Target X coordinate</div>
<div><span class='arg-name'>y2</span>: Target Y coordinate</div>
<div><span class='arg-name'>diagonal_cost</span>: Cost of diagonal movement (default: 1.41)</div>
</div>
<p style='margin-left: 20px;'><span class='returns'>Returns:</span> List of (x, y) tuples representing the path, empty list if no path exists</p>
</div>
<div style="margin-left: 20px; margin-bottom: 15px;">
<h5><code class="method-name">get_boundsGet bounding box as (x, y, width, height)</code></h5>
</div>
<div style="margin-left: 20px; margin-bottom: 15px;">
<h5><code class="method-name">get_dijkstra_distanceget_dijkstra_distance(x: int, y: int) -> Optional[float]</code></h5>
<p>Get distance from Dijkstra root to position.</p>
<div style='margin-left: 20px;'>
<div><span class='arg-name'>x</span>: X coordinate to query</div>
<div><span class='arg-name'>y</span>: Y coordinate to query</div>
</div>
<p style='margin-left: 20px;'><span class='returns'>Returns:</span> Distance as float, or None if position is unreachable or invalid</p>
</div>
<div style="margin-left: 20px; margin-bottom: 15px;">
<h5><code class="method-name">get_dijkstra_pathget_dijkstra_path(x: int, y: int) -> List[Tuple[int, int]]</code></h5>
<p>Get path from position to Dijkstra root.</p>
<div style='margin-left: 20px;'>
<div><span class='arg-name'>x</span>: Starting X coordinate</div>
<div><span class='arg-name'>y</span>: Starting Y coordinate</div>
</div>
<p style='margin-left: 20px;'><span class='returns'>Returns:</span> List of (x, y) tuples representing path to root, empty if unreachable</p>
</div>
<div style="margin-left: 20px; margin-bottom: 15px;">
<h5><code class="method-name">is_in_fovis_in_fov(x: int, y: int) -> bool</code></h5>
<p>Check if a cell is in the field of view.</p>
<div style='margin-left: 20px;'>
<div><span class='arg-name'>x</span>: X coordinate to check</div>
<div><span class='arg-name'>y</span>: Y coordinate to check</div>
</div>
<p style='margin-left: 20px;'><span class='returns'>Returns:</span> True if the cell is visible, False otherwise</p>
</div>
<div style="margin-left: 20px; margin-bottom: 15px;">
<h5><code class="method-name">moveMove by relative offset (dx, dy)</code></h5>
</div>
<div style="margin-left: 20px; margin-bottom: 15px;">
<h5><code class="method-name">resizeResize to new dimensions (width, height)</code></h5>
</div>
</div>
<div class="method-section">
<h3 id="GridPoint"><span class="class-name">GridPoint</span></h3>
<p>UIGridPoint object</p>
<h4>Methods:</h4>
</div>
<div class="method-section">
<h3 id="GridPointState"><span class="class-name">GridPointState</span></h3>
<p>UIGridPointState object</p>
<h4>Methods:</h4>
</div>
<div class="method-section">
<h3 id="Scene"><span class="class-name">Scene</span></h3>
<p>Base class for object-oriented scenes</p>
<h4>Methods:</h4>
<div style="margin-left: 20px; margin-bottom: 15px;">
<h5><code class="method-name">activate(...)</code></h5>
<p>Make this the active scene</p>
</div>
<div style="margin-left: 20px; margin-bottom: 15px;">
<h5><code class="method-name">get_ui(...)</code></h5>
<p>Get the UI element collection for this scene</p>
</div>
<div style="margin-left: 20px; margin-bottom: 15px;">
<h5><code class="method-name">register_keyboardRegister a keyboard handler function (alternative to overriding on_keypress)</code></h5>
</div>
</div>
<div class="method-section">
<h3 id="Sprite"><span class="class-name">Sprite</span></h3>
<p><em>Inherits from: Drawable</em></p>
<p>Sprite(pos=None, texture=None, sprite_index=0, **kwargs)
A sprite UI element that displays a texture or portion of a texture atlas.
Args:
pos (tuple, optional): Position as (x, y) tuple. Default: (0, 0)
texture (Texture, optional): Texture object to display. Default: default texture
sprite_index (int, optional): Index into texture atlas. Default: 0
Keyword Args:
scale (float): Uniform scale factor. Default: 1.0
scale_x (float): Horizontal scale factor. Default: 1.0
scale_y (float): Vertical scale factor. Default: 1.0
click (callable): Click event handler. Default: None
visible (bool): Visibility state. Default: True
opacity (float): Opacity (0.0-1.0). Default: 1.0
z_index (int): Rendering order. Default: 0
name (str): Element name for finding. Default: None
x (float): X position override. Default: 0
y (float): Y position override. Default: 0
Attributes:
x, y (float): Position in pixels
pos (Vector): Position as a Vector object
texture (Texture): The texture being displayed
sprite_index (int): Current sprite index in texture atlas
scale (float): Uniform scale factor
scale_x, scale_y (float): Individual scale factors
click (callable): Click event handler
visible (bool): Visibility state
opacity (float): Opacity value
z_index (int): Rendering order
name (str): Element name
w, h (float): Read-only computed size based on texture and scale</p>
<h4>Methods:</h4>
<div style="margin-left: 20px; margin-bottom: 15px;">
<h5><code class="method-name">get_boundsGet bounding box as (x, y, width, height)</code></h5>
</div>
<div style="margin-left: 20px; margin-bottom: 15px;">
<h5><code class="method-name">moveMove by relative offset (dx, dy)</code></h5>
</div>
<div style="margin-left: 20px; margin-bottom: 15px;">
<h5><code class="method-name">resizeResize to new dimensions (width, height)</code></h5>
</div>
</div>
<div class="method-section">
<h3 id="Texture"><span class="class-name">Texture</span></h3>
<p>SFML Texture Object</p>
<h4>Methods:</h4>
</div>
<div class="method-section">
<h3 id="Timer"><span class="class-name">Timer</span></h3>
<p>Timer(name, callback, interval, once=False)
Create a timer that calls a function at regular intervals.
Args:
name (str): Unique identifier for the timer
callback (callable): Function to call - receives (timer, runtime) args
interval (int): Time between calls in milliseconds
once (bool): If True, timer stops after first call. Default: False
Attributes:
interval (int): Time between calls in milliseconds
remaining (int): Time until next call in milliseconds (read-only)
paused (bool): Whether timer is paused (read-only)
active (bool): Whether timer is active and not paused (read-only)
callback (callable): The callback function
once (bool): Whether timer stops after firing once
Methods:
pause(): Pause the timer, preserving time remaining
resume(): Resume a paused timer
cancel(): Stop and remove the timer
restart(): Reset timer to start from beginning
Example:
def on_timer(timer, runtime):
print(f&#x27;Timer {timer} fired at {runtime}ms&#x27;)
if runtime &gt; 5000:
timer.cancel()
timer = mcrfpy.Timer(&#x27;my_timer&#x27;, on_timer, 1000)
timer.pause() # Pause timer
timer.resume() # Resume timer
timer.once = True # Make it one-shot</p>
<h4>Methods:</h4>
<div style="margin-left: 20px; margin-bottom: 15px;">
<h5><code class="method-name">cancelcancel() -> None</code></h5>
<p>Cancel the timer and remove it from the timer system.
The timer will no longer fire and cannot be restarted.</p>
</div>
<div style="margin-left: 20px; margin-bottom: 15px;">
<h5><code class="method-name">pausepause() -> None</code></h5>
<p>Pause the timer, preserving the time remaining until next trigger.
The timer can be resumed later with resume().</p>
</div>
<div style="margin-left: 20px; margin-bottom: 15px;">
<h5><code class="method-name">restartrestart() -> None</code></h5>
<p>Restart the timer from the beginning.
Resets the timer to fire after a full interval from now.</p>
</div>
<div style="margin-left: 20px; margin-bottom: 15px;">
<h5><code class="method-name">resumeresume() -> None</code></h5>
<p>Resume a paused timer from where it left off.
Has no effect if the timer is not paused.</p>
</div>
</div>
<div class="method-section">
<h3 id="UICollection"><span class="class-name">UICollection</span></h3>
<p>Iterable, indexable collection of UI objects</p>
<h4>Methods:</h4>
<div style="margin-left: 20px; margin-bottom: 15px;">
<h5><code class="method-name">append(...)</code></h5>
</div>
<div style="margin-left: 20px; margin-bottom: 15px;">
<h5><code class="method-name">count(...)</code></h5>
</div>
<div style="margin-left: 20px; margin-bottom: 15px;">
<h5><code class="method-name">extend(...)</code></h5>
</div>
<div style="margin-left: 20px; margin-bottom: 15px;">
<h5><code class="method-name">index(...)</code></h5>
</div>
<div style="margin-left: 20px; margin-bottom: 15px;">
<h5><code class="method-name">remove(...)</code></h5>
</div>
</div>
<div class="method-section">
<h3 id="UICollectionIter"><span class="class-name">UICollectionIter</span></h3>
<p>Iterator for a collection of UI objects</p>
<h4>Methods:</h4>
</div>
<div class="method-section">
<h3 id="UIEntityCollectionIter"><span class="class-name">UIEntityCollectionIter</span></h3>
<p>Iterator for a collection of UI objects</p>
<h4>Methods:</h4>
</div>
<div class="method-section">
<h3 id="Vector"><span class="class-name">Vector</span></h3>
<p>SFML Vector Object</p>
<h4>Methods:</h4>
<div style="margin-left: 20px; margin-bottom: 15px;">
<h5><code class="method-name">angle(...)</code></h5>
<p>Return the angle in radians from the positive X axis</p>
</div>
<div style="margin-left: 20px; margin-bottom: 15px;">
<h5><code class="method-name">copy(...)</code></h5>
<p>Return a copy of this vector</p>
</div>
<div style="margin-left: 20px; margin-bottom: 15px;">
<h5><code class="method-name">distance_to(...)</code></h5>
<p>Return the distance to another vector</p>
</div>
<div style="margin-left: 20px; margin-bottom: 15px;">
<h5><code class="method-name">dot(...)</code></h5>
<p>Return the dot product with another vector</p>
</div>
<div style="margin-left: 20px; margin-bottom: 15px;">
<h5><code class="method-name">magnitude(...)</code></h5>
<p>Return the length of the vector</p>
</div>
<div style="margin-left: 20px; margin-bottom: 15px;">
<h5><code class="method-name">magnitude_squared(...)</code></h5>
<p>Return the squared length of the vector</p>
</div>
<div style="margin-left: 20px; margin-bottom: 15px;">
<h5><code class="method-name">normalize(...)</code></h5>
<p>Return a unit vector in the same direction</p>
</div>
</div>
<div class="method-section">
<h3 id="Window"><span class="class-name">Window</span></h3>
<p>Window singleton for accessing and modifying the game window properties</p>
<h4>Methods:</h4>
<div style="margin-left: 20px; margin-bottom: 15px;">
<h5><code class="method-name">center(...)</code></h5>
<p>Center the window on the screen</p>
</div>
<div style="margin-left: 20px; margin-bottom: 15px;">
<h5><code class="method-name">get(...)</code></h5>
<p>Get the Window singleton instance</p>
</div>
<div style="margin-left: 20px; margin-bottom: 15px;">
<h5><code class="method-name">screenshot(...)</code></h5>
<p>Take a screenshot. Pass filename to save to file, or get raw bytes if no filename.</p>
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<h2 id='constants'>Constants</h2>
<ul>
<li><code>FOV_BASIC</code> (int): 0</li>
<li><code>FOV_DIAMOND</code> (int): 1</li>
<li><code>FOV_PERMISSIVE_0</code> (int): 3</li>
<li><code>FOV_PERMISSIVE_1</code> (int): 4</li>
<li><code>FOV_PERMISSIVE_2</code> (int): 5</li>
<li><code>FOV_PERMISSIVE_3</code> (int): 6</li>
<li><code>FOV_PERMISSIVE_4</code> (int): 7</li>
<li><code>FOV_PERMISSIVE_5</code> (int): 8</li>
<li><code>FOV_PERMISSIVE_6</code> (int): 9</li>
<li><code>FOV_PERMISSIVE_7</code> (int): 10</li>
<li><code>FOV_PERMISSIVE_8</code> (int): 11</li>
<li><code>FOV_RESTRICTIVE</code> (int): 12</li>
<li><code>FOV_SHADOW</code> (int): 2</li>
</ul>
</div>
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