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Modified scene interface so that tiles are requested directly so that we

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can implement "virtual" scenes which return tiles infinitely in all
directions in anticipation of supporting scrolling.


git-svn-id: svn+ssh://src.earth.threerings.net/narya/trunk@1007 542714f4-19e9-0310-aa3c-eee0fc999fb1
This commit is contained in:
Michael Bayne
2002-02-17 08:01:15 +00:00
parent 1bd4668067
commit 42261772a5
4 changed files with 75 additions and 64 deletions
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src/java/com/threerings/miso/client/util/AStarPathUtil.java
+16 -17
View File
@@ -1,5 +1,5 @@
//
// $Id: AStarPathUtil.java,v 1.12 2002/02/07 20:02:53 mdb Exp $
// $Id: AStarPathUtil.java,v 1.13 2002/02/17 08:01:15 mdb Exp $
package com.threerings.miso.scene.util;
@@ -9,9 +9,9 @@ import java.util.*;
import com.threerings.media.util.MathUtil;
import com.threerings.miso.Log;
import com.threerings.miso.scene.DisplayMisoScene;
import com.threerings.miso.scene.Traverser;
import com.threerings.miso.tile.BaseTile;
import com.threerings.miso.tile.BaseTileLayer;
/**
* The <code>AStarPathUtil</code> class provides a facility for
@@ -26,15 +26,14 @@ public class AStarPathUtil
{
/**
* Return a list of <code>Point</code> objects representing a path
* from coordinates <code>(ax, by)</code> to
* <code>(bx, by)</code>, inclusive, determined by performing an
* A* search in the given array of tiles. Assumes the starting
* and destination nodes are traversable by the specified
* traverser.
* from coordinates <code>(ax, by)</code> to <code>(bx, by)</code>,
* inclusive, determined by performing an A* search in the given
* scene's base tile layer. Assumes the starting and destination nodes
* are traversable by the specified traverser.
*
* @param tiles the tile array.
* @param tilewid the tile array width.
* @param tilehei the tile array height.
* @param scene the scene in which a path is to be computed.
* @param tilewid the scene width in tiles.
* @param tilehei the scene height in tiles.
* @param trav the traverser to follow the path.
* @param ax the starting x-position in tile coordinates.
* @param ay the starting y-position in tile coordinates.
@@ -44,10 +43,10 @@ public class AStarPathUtil
* @return the list of points in the path.
*/
public static List getPath (
BaseTileLayer tiles, int tilewid, int tilehei, Traverser trav,
DisplayMisoScene scene, int tilewid, int tilehei, Traverser trav,
int ax, int ay, int bx, int by)
{
AStarInfo info = new AStarInfo(tiles, tilewid, tilehei, trav, bx, by);
AStarInfo info = new AStarInfo(scene, tilewid, tilehei, trav, bx, by);
// set up the starting node
AStarNode s = getNode(info, ax, ay);
@@ -199,7 +198,7 @@ public class AStarPathUtil
protected static boolean isTraversable (AStarInfo info, int x, int y)
{
return (isCoordinateValid(info, x, y) &&
info.trav.canTraverse(info.tiles.getTile(x, y)));
info.trav.canTraverse(info.scene.getBaseTile(x, y)));
}
/**
@@ -253,8 +252,8 @@ public class AStarPathUtil
*/
class AStarInfo
{
/** The tile layer being traversed. */
public BaseTileLayer tiles;
/** The scene whose base tile layer is being traversed. */
public DisplayMisoScene scene;
/** The tile array dimensions. */
public int tilewid, tilehei;
@@ -275,11 +274,11 @@ class AStarInfo
public int destx, desty;
public AStarInfo (
BaseTileLayer tiles, int tilewid, int tilehei, Traverser trav,
DisplayMisoScene scene, int tilewid, int tilehei, Traverser trav,
int destx, int desty)
{
// save off references
this.tiles = tiles;
this.scene = scene;
this.tilewid = tilewid;
this.tilehei = tilehei;
this.trav = trav;