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add a TileMeshCollection parameter to make this a bit more portable between all the subclasses

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Gered 2013-08-06 18:11:40 -04:00
parent a8b2c39101
commit 690c7d7952
1 changed files with 43 additions and 3 deletions
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46
src/com/blarg/gdx/tilemap3d/TileContainer.java
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@ -7,6 +7,8 @@ import com.badlogic.gdx.math.collision.BoundingBox;
import com.badlogic.gdx.math.collision.Ray;
import com.blarg.gdx.math.IntersectionTester;
import com.blarg.gdx.math.MathHelpers;
import com.blarg.gdx.tilemap3d.tilemesh.TileMesh;
import com.blarg.gdx.tilemap3d.tilemesh.TileMeshCollection;
import sun.reflect.generics.reflectiveObjects.NotImplementedException;
public abstract class TileContainer {
@ -257,7 +259,7 @@ public abstract class TileContainer {
return collided;
}
public boolean checkForCollision(Ray ray, TileCoord collisionCoords, Vector3 tileMeshCollisionPoint) {
public boolean checkForCollision(Ray ray, TileCoord collisionCoords, TileMeshCollection tileMeshes, Vector3 tileMeshCollisionPoint) {
// if the ray doesn't collide with any solid tiles in the first place, then
// we can skip this more expensive triangle collision check...
if (!checkForCollision(ray, tmpCoords))
@ -271,11 +273,49 @@ public abstract class TileContainer {
return checkForCollisionWithTileMesh(
ray,
tmpCoords.x, tmpCoords.y, tmpCoords.z,
tileMeshes,
tileMeshCollisionPoint
);
}
public boolean checkForCollisionWithTileMesh(Ray ray, int x, int y, int z, Vector3 collisionPoint) {
throw new NotImplementedException();
static final Vector3 tileWorldPosition = new Vector3();
static final Vector3 collisionPoint = new Vector3();
static final Vector3 tmpA = new Vector3();
static final Vector3 tmpB = new Vector3();
static final Vector3 tmpC = new Vector3();
public boolean checkForCollisionWithTileMesh(Ray ray, int x, int y, int z, TileMeshCollection tileMeshes, Vector3 outCollisionPoint) {
Tile tile = get(x, y, z);
TileMesh mesh = tileMeshes.get(tile);
Vector3[] vertices = mesh.getCollisionVertices();
// world position of this tile, will be used to move each
// mesh triangle into world space
tileWorldPosition.set((float)x, (float)y, (float)z);
float closestSquaredDistance = Float.POSITIVE_INFINITY;
boolean collided = false;
collisionPoint.set(Vector3.Zero);
for (int i = 0; i < vertices.length; i += 3) {
// get the vertices making up this triangle (and move the vertices into world space)
tmpA.set(vertices[i]).add(tileWorldPosition);
tmpB.set(vertices[i + 1]).add(tileWorldPosition);
tmpC.set(vertices[i + 2]).add(tileWorldPosition);
if (Intersector.intersectRayTriangle(ray, tmpA, tmpB, tmpC, collisionPoint)) {
collided = true;
// if this is the closest collision yet, then keep the distance
// and point of collision
float squaredDistance = tmp1.set(collisionPoint).sub(ray.origin).len2();
if (squaredDistance < closestSquaredDistance) {
closestSquaredDistance = squaredDistance;
outCollisionPoint.set(collisionPoint);
}
}
}
return collided;
}
}