feat(engine): implement perspective FOV, pathfinding, and GUI text widgets
Major Engine Enhancements: - Complete FOV (Field of View) system with perspective rendering - UIGrid.perspective property for entity-based visibility - Three-layer overlay colors (unexplored, explored, visible) - Per-entity visibility state tracking - Perfect knowledge updates only for explored areas - Advanced Pathfinding Integration - A* pathfinding implementation in UIGrid - Entity.path_to() method for direct pathfinding - Dijkstra maps for multi-target pathfinding - Path caching for performance optimization - GUI Text Input Widgets - TextInputWidget class with cursor, selection, scrolling - Improved widget with proper text rendering and input handling - Example showcase of multiple text input fields - Foundation for in-game console and chat systems - Performance & Architecture Improvements - PyTexture copy operations optimized - GameEngine update cycle refined - UIEntity property handling enhanced - UITestScene modernized Test Suite: - Interactive visibility demos showing FOV in action - Pathfinding comparison (A* vs Dijkstra) - Debug utilities for visibility and empty path handling - Sizzle reel demo combining pathfinding and vision - Multiple text input test scenarios This commit brings McRogueFace closer to a complete roguelike engine with essential features like line-of-sight, intelligent pathfinding, and interactive text input capabilities. 🤖 Generated with [Claude Code](https://claude.ai/code) Co-Authored-By: Claude <noreply@anthropic.com>
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src/scripts/text_input_widget.py
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src/scripts/text_input_widget.py
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"""
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Text Input Widget System for McRogueFace
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A reusable module for text input fields with focus management
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"""
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import mcrfpy
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class FocusManager:
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"""Manages focus across multiple widgets"""
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def __init__(self):
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self.widgets = []
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self.focused_widget = None
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self.focus_index = -1
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def register(self, widget):
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"""Register a widget"""
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self.widgets.append(widget)
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if self.focused_widget is None:
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self.focus(widget)
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def focus(self, widget):
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"""Set focus to widget"""
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if self.focused_widget:
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self.focused_widget.on_blur()
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self.focused_widget = widget
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self.focus_index = self.widgets.index(widget) if widget in self.widgets else -1
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if widget:
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widget.on_focus()
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def focus_next(self):
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"""Focus next widget"""
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if not self.widgets:
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return
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self.focus_index = (self.focus_index + 1) % len(self.widgets)
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self.focus(self.widgets[self.focus_index])
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def focus_prev(self):
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"""Focus previous widget"""
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if not self.widgets:
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return
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self.focus_index = (self.focus_index - 1) % len(self.widgets)
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self.focus(self.widgets[self.focus_index])
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def handle_key(self, key):
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"""Send key to focused widget"""
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if self.focused_widget:
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return self.focused_widget.handle_key(key)
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return False
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class TextInput:
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"""Text input field widget"""
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def __init__(self, x, y, width, height=24, label="", placeholder="", on_change=None):
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self.x = x
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self.y = y
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self.width = width
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self.height = height
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self.label = label
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self.placeholder = placeholder
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self.on_change = on_change
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# Text state
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self.text = ""
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self.cursor_pos = 0
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self.focused = False
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# Visual elements
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self._create_ui()
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def _create_ui(self):
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"""Create UI components"""
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# Background frame
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self.frame = mcrfpy.Frame(self.x, self.y, self.width, self.height)
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self.frame.fill_color = (255, 255, 255, 255)
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self.frame.outline_color = (128, 128, 128, 255)
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self.frame.outline = 2
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# Label (above input)
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if self.label:
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self.label_text = mcrfpy.Caption(self.label, self.x, self.y - 20)
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self.label_text.fill_color = (255, 255, 255, 255)
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# Text content
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self.text_display = mcrfpy.Caption("", self.x + 4, self.y + 4)
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self.text_display.fill_color = (0, 0, 0, 255)
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# Placeholder text
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if self.placeholder:
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self.placeholder_text = mcrfpy.Caption(self.placeholder, self.x + 4, self.y + 4)
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self.placeholder_text.fill_color = (180, 180, 180, 255)
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# Cursor
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self.cursor = mcrfpy.Frame(self.x + 4, self.y + 4, 2, self.height - 8)
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self.cursor.fill_color = (0, 0, 0, 255)
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self.cursor.visible = False
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# Click handler
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self.frame.click = self._on_click
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def _on_click(self, x, y, button, state):
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"""Handle mouse clicks"""
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print(self, x, y, button, state)
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if button == "left" and hasattr(self, '_focus_manager'):
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self._focus_manager.focus(self)
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def on_focus(self):
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"""Called when focused"""
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self.focused = True
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self.frame.outline_color = (0, 120, 255, 255)
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self.frame.outline = 3
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self.cursor.visible = True
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self._update_display()
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def on_blur(self):
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"""Called when focus lost"""
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self.focused = False
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self.frame.outline_color = (128, 128, 128, 255)
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self.frame.outline = 2
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self.cursor.visible = False
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self._update_display()
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def handle_key(self, key):
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"""Process keyboard input"""
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if not self.focused:
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return False
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old_text = self.text
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handled = True
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# Navigation and editing keys
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if key == "BackSpace":
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if self.cursor_pos > 0:
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self.text = self.text[:self.cursor_pos-1] + self.text[self.cursor_pos:]
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self.cursor_pos -= 1
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elif key == "Delete":
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if self.cursor_pos < len(self.text):
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self.text = self.text[:self.cursor_pos] + self.text[self.cursor_pos+1:]
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elif key == "Left":
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self.cursor_pos = max(0, self.cursor_pos - 1)
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elif key == "Right":
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self.cursor_pos = min(len(self.text), self.cursor_pos + 1)
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elif key == "Home":
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self.cursor_pos = 0
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elif key == "End":
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self.cursor_pos = len(self.text)
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elif key in ("Tab", "Return"):
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handled = False # Let parent handle
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elif len(key) == 1 and key.isprintable():
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self.text = self.text[:self.cursor_pos] + key + self.text[self.cursor_pos:]
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self.cursor_pos += 1
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else:
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handled = False
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# Update if changed
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if old_text != self.text:
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self._update_display()
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if self.on_change:
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self.on_change(self.text)
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elif handled:
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self._update_cursor()
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return handled
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def _update_display(self):
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"""Update visual state"""
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# Show/hide placeholder
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if hasattr(self, 'placeholder_text'):
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self.placeholder_text.visible = (self.text == "" and not self.focused)
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# Update text
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self.text_display.text = self.text
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self._update_cursor()
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def _update_cursor(self):
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"""Update cursor position"""
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if self.focused:
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# Estimate position (10 pixels per character)
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self.cursor.x = self.x + 4 + (self.cursor_pos * 10)
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def set_text(self, text):
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"""Set text programmatically"""
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self.text = text
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self.cursor_pos = len(text)
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self._update_display()
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def get_text(self):
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"""Get current text"""
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return self.text
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def add_to_scene(self, scene):
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"""Add all components to scene"""
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scene.append(self.frame)
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if hasattr(self, 'label_text'):
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scene.append(self.label_text)
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if hasattr(self, 'placeholder_text'):
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scene.append(self.placeholder_text)
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scene.append(self.text_display)
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scene.append(self.cursor)
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