Initial working version of many miso classes. The beginnings of some
of our tile- and scene-related machinations. git-svn-id: svn+ssh://src.earth.threerings.net/narya/trunk@44 542714f4-19e9-0310-aa3c-eee0fc999fb1
This commit is contained in:
Walter Korman
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//
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// $Id: DisplayMisoSceneImpl.java,v 1.1 2001/07/12 22:38:03 shaper Exp $
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package com.threerings.cocktail.miso.scene;
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import com.threerings.cocktail.miso.tile.Tile;
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import com.threerings.cocktail.miso.tile.TileManager;
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import java.awt.Point;
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import java.io.*;
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/**
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* A scene represents the data model corresponding to a single screen
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* for game play. For instance, one scene might display a portion of
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* a street with several buildings scattered about on the periphery.
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*/
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public class Scene
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{
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public Tile tiles[][][]; // the tiles comprising the scene
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/**
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* Construct a new Scene object initialized to a default state.
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*/
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public Scene (TileManager tmgr)
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{
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_tmgr = tmgr;
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_name = DEF_SCENE_NAME;
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_sid = 0;
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_version = VERSION;
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tiles = new Tile[TILE_WIDTH][TILE_HEIGHT][NUM_LAYERS];
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Tile tile = _tmgr.getTile(DEF_TILESET_NAME, DEF_TILE_NAME);
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for (int xx = 0; xx < TILE_WIDTH; xx++) {
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for (int yy = 0; yy < TILE_HEIGHT; yy++) {
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for (int ii = 0; ii < NUM_LAYERS; ii++) {
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if (ii == LAYER_BASE) {
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tiles[xx][yy][ii] = tile;
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}
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}
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}
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}
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_file = null;
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}
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public File getFile ()
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{
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return _file;
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}
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public void setFile (File file)
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{
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_file = file;
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}
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/**
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* Return the number of actual (non-null) tiles present in the
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* specified tile layer for this scene.
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*/
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public int getNumLayerTiles (int lnum)
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{
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if (lnum == LAYER_BASE) return TILE_WIDTH * TILE_HEIGHT;
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int numTiles = 0;
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for (int xx = 0; xx < TILE_WIDTH; xx++) {
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for (int yy = 0; yy < TILE_HEIGHT; yy++) {
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if (tiles[xx][yy] != null) numTiles++;
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}
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}
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return numTiles;
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}
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/**
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* Populate the scene object by reading the contents from the given
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* input stream.
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*/
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public void readFrom (InputStream in) throws IOException
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{
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DataInputStream dis = new DataInputStream(in);
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// read scene header information
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_name = dis.readUTF();
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_sid = dis.readShort();
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_version = dis.readShort();
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// make sure we can understand the file format
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if (_version < 0 || _version > VERSION) {
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throw new IOException("Can't understand scene file format " +
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" [version=" + _version + "]");
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}
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// allocate full tile array. null tiles denote tiles in absentia.
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tiles = new Tile[TILE_WIDTH][TILE_HEIGHT][NUM_LAYERS];
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// read all tiles for the base layer
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for (int xx = 0; xx < TILE_WIDTH; xx++) {
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for (int yy = 0; yy < TILE_HEIGHT; yy++) {
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// read tile details
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short tsid = dis.readShort();
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short tid = dis.readShort();
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// retrieve tile from tile manager
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tiles[xx][yy][LAYER_BASE] = _tmgr.getTile(tsid, tid);
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}
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}
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// read tiles for each of the subsequent layers
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for (int lnum = 1; lnum < NUM_LAYERS; lnum++) {
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// read the number of tiles in this layer
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int numTiles = dis.readShort();
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for (int ii = 0; ii < numTiles; ii++) {
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// read tile details
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short tsid = dis.readShort();
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short tid = dis.readShort();
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byte tx = dis.readByte();
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byte ty = dis.readByte();
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// retrieve tile from tile manager
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tiles[tx][ty][lnum] = _tmgr.getTile(tsid, tid);
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}
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}
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// read hotspot points
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short numSpots = dis.readShort();
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_hotspots = new Point[numSpots];
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for (int ii = 0; ii < numSpots; ii++) {
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_hotspots[ii] = new Point();
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_hotspots[ii].x = dis.readByte();
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_hotspots[ii].y = dis.readByte();
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}
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// read exit points
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short numExits = dis.readShort();
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_exits = new ExitPoint[numExits];
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for (int ii = 0; ii < numExits; ii++) {
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_exits[ii] = new ExitPoint();
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_exits[ii].x = dis.readByte();
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_exits[ii].y = dis.readByte();
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_exits[ii].sid = dis.readShort();
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}
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}
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/**
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* Write this scene object to the specified output stream.
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*/
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public void writeTo (OutputStream out) throws IOException
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{
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DataOutputStream dos = new DataOutputStream(out);
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// write scene header information
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dos.writeUTF(_name);
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dos.writeShort(_sid);
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dos.writeShort(_version);
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// write tiles for the base layer
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for (int xx = 0; xx < TILE_WIDTH; xx++) {
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for (int yy = 0; yy < TILE_HEIGHT; yy++) {
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Tile tile = tiles[xx][yy][LAYER_BASE];
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dos.writeShort(tile.tsid);
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dos.writeShort(tile.tid);
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}
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}
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// write tiles for each of the subsequent layers
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for (int lnum = 1; lnum < NUM_LAYERS; lnum++) {
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// write the number of tiles in this layer
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dos.writeShort(getNumLayerTiles(lnum));
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for (int xx = 0; xx < TILE_WIDTH; xx++) {
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for (int yy = 0; yy < TILE_HEIGHT; yy++) {
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Tile tile = tiles[xx][yy][lnum];
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if (tile != null) {
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dos.writeShort(tile.tsid);
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dos.writeShort(tile.tid);
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}
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}
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}
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}
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// write hotspot points
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int numSpots = (_hotspots == null) ? 0 : _hotspots.length;
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dos.writeShort(numSpots);
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for (int ii = 0; ii < numSpots; ii++) {
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dos.writeByte(_hotspots[ii].x);
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dos.writeByte(_hotspots[ii].y);
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}
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// write exit points
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int numExits = (_exits == null) ? 0 : _exits.length;
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dos.writeShort(numExits);
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for (int ii = 0; ii < numExits; ii++) {
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dos.writeByte(_exits[ii].x);
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dos.writeByte(_exits[ii].y);
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dos.writeByte(_exits[ii].sid);
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}
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}
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// the latest scene file format version number
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protected static final short VERSION = 1;
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// scene width/height in tiles
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protected static final int TILE_WIDTH = 20;
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protected static final int TILE_HEIGHT = 40;
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// layer identifiers and total number of layers
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protected static final int LAYER_BASE = 0;
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protected static final int LAYER_OBJECT = 1;
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protected static final int NUM_LAYERS = 2;
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protected static final String DEF_SCENE_NAME = "Untitled Scene";
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protected static final String DEF_TILESET_NAME = "ground";
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protected static final String DEF_TILE_NAME = "dirt";
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protected String _name; // the scene name
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protected short _sid; // the unique scene id
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protected short _version; // file format version
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protected Point _hotspots[]; // hot spot zone points
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protected ExitPoint _exits[]; // exit points to different scenes
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protected File _file; // the file last associated with this scene
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protected TileManager _tmgr;
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}
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