1cfd74d65d832137e20e193c960802afba73b5d38sm/* 23c1e67e433728684b5f228c5d4f3e5b1457bb271sm * Copyright (C) 2010 The Android Open Source Project 3cfd74d65d832137e20e193c960802afba73b5d38sm * 4cfd74d65d832137e20e193c960802afba73b5d38sm * Licensed under the Apache License, Version 2.0 (the "License"); 5cfd74d65d832137e20e193c960802afba73b5d38sm * you may not use this file except in compliance with the License. 6cfd74d65d832137e20e193c960802afba73b5d38sm * You may obtain a copy of the License at 7cfd74d65d832137e20e193c960802afba73b5d38sm * 8cfd74d65d832137e20e193c960802afba73b5d38sm * http://www.apache.org/licenses/LICENSE-2.0 9cfd74d65d832137e20e193c960802afba73b5d38sm * 10cfd74d65d832137e20e193c960802afba73b5d38sm * Unless required by applicable law or agreed to in writing, software 11cfd74d65d832137e20e193c960802afba73b5d38sm * distributed under the License is distributed on an "AS IS" BASIS, 12cfd74d65d832137e20e193c960802afba73b5d38sm * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13cfd74d65d832137e20e193c960802afba73b5d38sm * See the License for the specific language governing permissions and 14cfd74d65d832137e20e193c960802afba73b5d38sm * limitations under the License. 15cfd74d65d832137e20e193c960802afba73b5d38sm */ 16cfd74d65d832137e20e193c960802afba73b5d38sm 17cfd74d65d832137e20e193c960802afba73b5d38smpackage com.replica.replicaisland; 18cfd74d65d832137e20e193c960802afba73b5d38sm 19cfd74d65d832137e20e193c960802afba73b5d38smimport com.replica.replicaisland.CollisionParameters.HitType; 20cfd74d65d832137e20e193c960802afba73b5d38sm 21cfd74d65d832137e20e193c960802afba73b5d38sm/** 22cfd74d65d832137e20e193c960802afba73b5d38sm * CollisionVolume describes a volume (rectangle, sphere, etc) used for dynamic collision detection. 23cfd74d65d832137e20e193c960802afba73b5d38sm * Volumes can be tested for intersection against other volumes, and can be grown to contain a set 24cfd74d65d832137e20e193c960802afba73b5d38sm * of other volumes. The volume itself is stored in object-relative space (in terms of offsets from 25cfd74d65d832137e20e193c960802afba73b5d38sm * some origin); when used with game objects the position of the parent object must be passed to 26cfd74d65d832137e20e193c960802afba73b5d38sm * a parameter of the intersection test. This means that a single instance of a CollisionVolume and 27cfd74d65d832137e20e193c960802afba73b5d38sm * its derivatives is safe to share amongst many game object instances. 28cfd74d65d832137e20e193c960802afba73b5d38sm */ 29cfd74d65d832137e20e193c960802afba73b5d38smpublic abstract class CollisionVolume extends AllocationGuard { 30cfd74d65d832137e20e193c960802afba73b5d38sm // TODO: does this really belong here? 31cfd74d65d832137e20e193c960802afba73b5d38sm // When used as an attack volume, mHitType specifies the type of hit that the volume deals. 32cfd74d65d832137e20e193c960802afba73b5d38sm // When used as a vulnerability volume, it specifies which type the volume is vulernable to 33cfd74d65d832137e20e193c960802afba73b5d38sm // (invalid = all types). 34cfd74d65d832137e20e193c960802afba73b5d38sm public int mHitType; 35cfd74d65d832137e20e193c960802afba73b5d38sm 36cfd74d65d832137e20e193c960802afba73b5d38sm public CollisionVolume() { 37cfd74d65d832137e20e193c960802afba73b5d38sm super(); 38cfd74d65d832137e20e193c960802afba73b5d38sm mHitType = HitType.INVALID; 39cfd74d65d832137e20e193c960802afba73b5d38sm } 40cfd74d65d832137e20e193c960802afba73b5d38sm 41cfd74d65d832137e20e193c960802afba73b5d38sm public CollisionVolume(int type) { 42cfd74d65d832137e20e193c960802afba73b5d38sm super(); 43cfd74d65d832137e20e193c960802afba73b5d38sm mHitType = type; 44cfd74d65d832137e20e193c960802afba73b5d38sm } 45cfd74d65d832137e20e193c960802afba73b5d38sm 46cfd74d65d832137e20e193c960802afba73b5d38sm public void setHitType(int type) { 47cfd74d65d832137e20e193c960802afba73b5d38sm mHitType = type; 48cfd74d65d832137e20e193c960802afba73b5d38sm } 49cfd74d65d832137e20e193c960802afba73b5d38sm 50cfd74d65d832137e20e193c960802afba73b5d38sm public int getHitType() { 51cfd74d65d832137e20e193c960802afba73b5d38sm return mHitType; 52cfd74d65d832137e20e193c960802afba73b5d38sm } 53cfd74d65d832137e20e193c960802afba73b5d38sm 54cfd74d65d832137e20e193c960802afba73b5d38sm 55cfd74d65d832137e20e193c960802afba73b5d38sm public abstract boolean intersects(Vector2 position, FlipInfo flip, CollisionVolume other, 56cfd74d65d832137e20e193c960802afba73b5d38sm Vector2 otherPosition, FlipInfo otherFlip); 57cfd74d65d832137e20e193c960802afba73b5d38sm 58cfd74d65d832137e20e193c960802afba73b5d38sm public float getMinXPosition(FlipInfo flip) { 59cfd74d65d832137e20e193c960802afba73b5d38sm float value = 0; 60cfd74d65d832137e20e193c960802afba73b5d38sm if (flip != null && flip.flipX) { 61cfd74d65d832137e20e193c960802afba73b5d38sm final float maxX = getMaxX(); 62cfd74d65d832137e20e193c960802afba73b5d38sm value = flip.parentWidth - maxX; 63cfd74d65d832137e20e193c960802afba73b5d38sm } else { 64cfd74d65d832137e20e193c960802afba73b5d38sm value = getMinX(); 65cfd74d65d832137e20e193c960802afba73b5d38sm } 66cfd74d65d832137e20e193c960802afba73b5d38sm return value; 67cfd74d65d832137e20e193c960802afba73b5d38sm } 68cfd74d65d832137e20e193c960802afba73b5d38sm 69cfd74d65d832137e20e193c960802afba73b5d38sm public float getMaxXPosition(FlipInfo flip) { 70cfd74d65d832137e20e193c960802afba73b5d38sm float value = 0; 71cfd74d65d832137e20e193c960802afba73b5d38sm if (flip != null && flip.flipX) { 72cfd74d65d832137e20e193c960802afba73b5d38sm final float minX = getMinX(); 73cfd74d65d832137e20e193c960802afba73b5d38sm value = flip.parentWidth - minX; 74cfd74d65d832137e20e193c960802afba73b5d38sm } else { 75cfd74d65d832137e20e193c960802afba73b5d38sm value = getMaxX(); 76cfd74d65d832137e20e193c960802afba73b5d38sm } 77cfd74d65d832137e20e193c960802afba73b5d38sm return value; 78cfd74d65d832137e20e193c960802afba73b5d38sm } 79cfd74d65d832137e20e193c960802afba73b5d38sm 80cfd74d65d832137e20e193c960802afba73b5d38sm public float getMinYPosition(FlipInfo flip) { 81cfd74d65d832137e20e193c960802afba73b5d38sm float value = 0; 82cfd74d65d832137e20e193c960802afba73b5d38sm if (flip != null && flip.flipY) { 83cfd74d65d832137e20e193c960802afba73b5d38sm final float maxY = getMaxY(); 84cfd74d65d832137e20e193c960802afba73b5d38sm value = flip.parentHeight - maxY; 85cfd74d65d832137e20e193c960802afba73b5d38sm } else { 86cfd74d65d832137e20e193c960802afba73b5d38sm value = getMinY(); 87cfd74d65d832137e20e193c960802afba73b5d38sm } 88cfd74d65d832137e20e193c960802afba73b5d38sm return value; 89cfd74d65d832137e20e193c960802afba73b5d38sm } 90cfd74d65d832137e20e193c960802afba73b5d38sm 91cfd74d65d832137e20e193c960802afba73b5d38sm public float getMaxYPosition(FlipInfo flip) { 92cfd74d65d832137e20e193c960802afba73b5d38sm float value = 0; 93cfd74d65d832137e20e193c960802afba73b5d38sm if (flip != null && flip.flipY) { 94cfd74d65d832137e20e193c960802afba73b5d38sm final float minY = getMinY(); 95cfd74d65d832137e20e193c960802afba73b5d38sm value = flip.parentHeight - minY; 96cfd74d65d832137e20e193c960802afba73b5d38sm } else { 97cfd74d65d832137e20e193c960802afba73b5d38sm value = getMaxY(); 98cfd74d65d832137e20e193c960802afba73b5d38sm } 99cfd74d65d832137e20e193c960802afba73b5d38sm return value; 100cfd74d65d832137e20e193c960802afba73b5d38sm } 101cfd74d65d832137e20e193c960802afba73b5d38sm 102cfd74d65d832137e20e193c960802afba73b5d38sm protected abstract float getMinX(); 103cfd74d65d832137e20e193c960802afba73b5d38sm protected abstract float getMaxX(); 104cfd74d65d832137e20e193c960802afba73b5d38sm protected abstract float getMinY(); 105cfd74d65d832137e20e193c960802afba73b5d38sm protected abstract float getMaxY(); 106cfd74d65d832137e20e193c960802afba73b5d38sm 107cfd74d65d832137e20e193c960802afba73b5d38sm 108cfd74d65d832137e20e193c960802afba73b5d38sm public static class FlipInfo { 109cfd74d65d832137e20e193c960802afba73b5d38sm public boolean flipX; 110cfd74d65d832137e20e193c960802afba73b5d38sm public boolean flipY; 111cfd74d65d832137e20e193c960802afba73b5d38sm public float parentWidth; 112cfd74d65d832137e20e193c960802afba73b5d38sm public float parentHeight; 113cfd74d65d832137e20e193c960802afba73b5d38sm } 114cfd74d65d832137e20e193c960802afba73b5d38sm} 115