types.ts

export enum MaterialType {
  EMPTY = 0,
  STONE = 1,
  SAND = 2,
  WATER = 3,
  WOOD = 4,
  FIRE = 5,
  SMOKE = 6,
  PLANT = 7,
  ACID = 8,
  LAVA = 9,
  STEAM = 10,
  ICE = 11,
  VOID = 12,   // Indestructible
  BOUNCY = 13, // Bouncy Ball
  // Custom materials start here
  CUSTOM_START = 100 
}

export type MaterialBehavior = 'static' | 'powder' | 'liquid' | 'gas' | 'fire' | 'bouncy';

export interface MaterialDef {
  id: number;
  name: string;
  color: string;
  behavior: MaterialBehavior;
  density?: number; // Heavier sinks
  flammable?: boolean;
  corrosive?: boolean; // Acid
  bounciness?: number; // 0-1
  viscosity?: number; // For liquids
  texturePattern?: 'flat' | 'noise' | 'bricks' | 'waves' | 'checker';
}

export interface GenerationRequest {
  prompt: string;
  width: number;
  height: number;
}

export type ToolType = 'brush' | 'eraser' | 'line' | 'rect' | 'stamp';

export interface Asset {
  id: string;
  name: string;
  width: number;
  height: number;
  data: number[]; // Flattened grid
}