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* Control Mapping System for Black Trigram
* Manages keyboard control bindings with localStorage persistence
*
* @module utils/controlMapping
* @category Input System
* @korean 컨트롤 매핑 시스템
*/
import { TrigramStance } from "../types/common";
import { TRIGRAM_STANCES_ORDER } from "../systems/trigram/types";
/**
* Control binding configuration
* Maps game actions to keyboard keys
*
* @category Input System
* @korean 컨트롤 바인딩
*/
export interface ControlBinding {
/** Stance selection keys (1-8 by default) */
readonly stances: readonly string[];
/** Attack action key */
readonly attack: string;
/** Block/Guard action key */
readonly block: string;
/** Movement keys */
readonly movement: {
readonly up: string;
readonly down: string;
readonly left: string;
readonly right: string;
};
/** Special action keys */
readonly special: {
readonly precision: string;
readonly quickSwitch: string;
readonly reset: string;
};
}
/**
* Storage key for localStorage persistence
*/
const STORAGE_KEY = "blacktrigram_controls";
/**
* Default control bindings following game design specifications
* Based on game-design.md lines 942-947
*/
const DEFAULT_BINDINGS: ControlBinding = {
stances: ["1", "2", "3", "4", "5", "6", "7", "8"],
attack: " ", // Spacebar
block: "b",
movement: {
up: "w",
down: "s",
left: "a",
right: "d",
},
special: {
precision: "Control",
quickSwitch: "q",
reset: "r",
},
};
/**
* Control Mapper class for managing keyboard bindings
* Handles loading, saving, and querying control mappings
*
* @example
* ```typescript
* const mapper = new ControlMapper();
*
* // Get stance for key press
* const stance = mapper.getStanceForKey("3"); // Returns 2 (0-indexed)
*
* // Update bindings
* mapper.saveBindings({
* ...mapper.getBindings(),
* stances: ['q', 'w', 'e', 'r', 'a', 's', 'd', 'f']
* });
* ```
*
* @public
* @korean 컨트롤매퍼
*/
export class ControlMapper {
private bindings: ControlBinding;
/**
* Creates a new ControlMapper instance
* Automatically loads bindings from localStorage
*/
constructor() {
this.bindings = this.loadBindings();
}
/**
* Load bindings from localStorage
* Returns default bindings if none exist
*
* @returns Control bindings from storage or defaults
* @korean 바인딩 로드
*/
loadBindings(): ControlBinding {
try {
const saved = localStorage.getItem(STORAGE_KEY);
if (saved) {
const parsed = JSON.parse(saved) as ControlBinding;
// Validate loaded bindings
if (this.validateBindings(parsed)) {
return parsed;
}
}
} catch (error) {
console.warn("Failed to load control bindings:", error);
}
return this.getDefaultBindings();
}
/**
* Save bindings to localStorage
*
* @param bindings - Control bindings to save
* @korean 바인딩 저장
*/
saveBindings(bindings: ControlBinding): void {
if (!this.validateBindings(bindings)) {
console.error("Invalid control bindings, not saving");
return;
}
try {
localStorage.setItem(STORAGE_KEY, JSON.stringify(bindings));
this.bindings = bindings;
} catch (error) {
console.error("Failed to save control bindings:", error);
}
}
/**
* Get default control bindings
*
* @returns Default control configuration
* @korean 기본 바인딩
*/
getDefaultBindings(): ControlBinding {
return { ...DEFAULT_BINDINGS };
}
/**
* Get current control bindings
*
* @returns Current control configuration
* @korean 현재 바인딩
*/
getBindings(): ControlBinding {
return { ...this.bindings };
}
/**
* Reset bindings to default
*
* @korean 기본값으로 리셋
*/
resetToDefaults(): void {
this.saveBindings(this.getDefaultBindings());
}
/**
* Get stance index for a given key
* Returns null if key is not bound to a stance
*
* @param key - Keyboard key to check
* @returns Stance index (0-7) or null
* @korean 키에 대한 자세 조회
*/
getStanceForKey(key: string): number | null {
const normalizedKey = key.toLowerCase();
const index = this.bindings.stances.findIndex(
(k) => k.toLowerCase() === normalizedKey
);
return index >= 0 ? index : null;
}
/**
* Get key for a given stance index
*
* @param stanceIndex - Stance index (0-7)
* @returns Key bound to that stance
* @korean 자세에 대한 키 조회
*/
getKeyForStance(stanceIndex: number): string | null {
if (stanceIndex < 0 || stanceIndex >= this.bindings.stances.length) {
return null;
}
return this.bindings.stances[stanceIndex];
}
/**
* Get TrigramStance enum for a given key
*
* @param key - Keyboard key to check
* @returns TrigramStance or null
* @korean 키에 대한 팔괘 자세
*/
getTrigramStanceForKey(key: string): TrigramStance | null {
const index = this.getStanceForKey(key);
if (index === null) return null;
return TRIGRAM_STANCES_ORDER[index] ?? null;
}
/**
* Check if a key is bound to an action
*
* @param key - Keyboard key to check
* @returns Action name or null
* @korean 키 바인딩 확인
*/
getActionForKey(key: string): string | null {
const normalizedKey = key.toLowerCase();
// Check stance keys
if (this.getStanceForKey(key) !== null) {
return "stance";
}
// Check other actions
if (normalizedKey === this.bindings.attack.toLowerCase()) return "attack";
if (normalizedKey === this.bindings.block.toLowerCase()) return "block";
// Check movement
const movement = this.bindings.movement;
if (normalizedKey === movement.up.toLowerCase()) return "move_up";
if (normalizedKey === movement.down.toLowerCase()) return "move_down";
if (normalizedKey === movement.left.toLowerCase()) return "move_left";
if (normalizedKey === movement.right.toLowerCase()) return "move_right";
// Check special
const special = this.bindings.special;
if (normalizedKey === special.precision.toLowerCase()) return "precision";
if (normalizedKey === special.quickSwitch.toLowerCase())
return "quick_switch";
Eif (normalizedKey === special.reset.toLowerCase()) return "reset";
return null;
}
/**
* Validate control bindings
* Ensures no duplicate keys and all required keys are present
*
* @param bindings - Bindings to validate
* @returns True if valid
* @korean 바인딩 검증
*/
private validateBindings(bindings: ControlBinding): boolean {
// Check that stances array has exactly 8 entries
if (
!bindings.stances ||
!Array.isArray(bindings.stances) ||
bindings.stances.length !== 8
) {
return false;
}
// Check for duplicate keys
const allKeys = [
...bindings.stances,
bindings.attack,
bindings.block,
bindings.movement.up,
bindings.movement.down,
bindings.movement.left,
bindings.movement.right,
bindings.special.precision,
bindings.special.quickSwitch,
bindings.special.reset,
];
const uniqueKeys = new Set(allKeys.map((k) => k.toLowerCase()));
if (uniqueKeys.size !== allKeys.length) {
// Duplicate keys found
return false;
}
return true;
}
/**
* Check if bindings have conflicts
* Returns array of conflicting keys
*
* @param bindings - Bindings to check
* @returns Array of duplicate keys
* @korean 바인딩 충돌 확인
*/
getConflicts(bindings: ControlBinding): string[] {
const keyCount = new Map<string, number>();
const conflicts: string[] = [];
const allKeys = [
...bindings.stances,
bindings.attack,
bindings.block,
bindings.movement.up,
bindings.movement.down,
bindings.movement.left,
bindings.movement.right,
bindings.special.precision,
bindings.special.quickSwitch,
bindings.special.reset,
];
allKeys.forEach((key) => {
const normalized = key.toLowerCase();
keyCount.set(normalized, (keyCount.get(normalized) ?? 0) + 1);
});
keyCount.forEach((count, key) => {
if (count > 1) {
conflicts.push(key);
}
});
return conflicts;
}
}
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