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 19cfd74d65d832137e20e193c960802afba73b5d38sm 20cfd74d65d832137e20e193c960802afba73b5d38sm/** 21cfd74d65d832137e20e193c960802afba73b5d38sm * A game component that implements velocity-based movement. 22cfd74d65d832137e20e193c960802afba73b5d38sm */ 23cfd74d65d832137e20e193c960802afba73b5d38smpublic class MovementComponent extends GameComponent { 24cfd74d65d832137e20e193c960802afba73b5d38sm // If multiple game components were ever running in different threads, this would need 25cfd74d65d832137e20e193c960802afba73b5d38sm // to be non-static. 26cfd74d65d832137e20e193c960802afba73b5d38sm private static Interpolator sInterpolator = new Interpolator(); 27cfd74d65d832137e20e193c960802afba73b5d38sm 28cfd74d65d832137e20e193c960802afba73b5d38sm public MovementComponent() { 29cfd74d65d832137e20e193c960802afba73b5d38sm super(); 30cfd74d65d832137e20e193c960802afba73b5d38sm setPhase(ComponentPhases.MOVEMENT.ordinal()); 31cfd74d65d832137e20e193c960802afba73b5d38sm } 32cfd74d65d832137e20e193c960802afba73b5d38sm 33cfd74d65d832137e20e193c960802afba73b5d38sm @Override 34cfd74d65d832137e20e193c960802afba73b5d38sm public void reset() { 35cfd74d65d832137e20e193c960802afba73b5d38sm 36cfd74d65d832137e20e193c960802afba73b5d38sm } 37cfd74d65d832137e20e193c960802afba73b5d38sm 38cfd74d65d832137e20e193c960802afba73b5d38sm @Override 39cfd74d65d832137e20e193c960802afba73b5d38sm public void update(float timeDelta, BaseObject parent) { 40cfd74d65d832137e20e193c960802afba73b5d38sm GameObject object = (GameObject) parent; 41cfd74d65d832137e20e193c960802afba73b5d38sm 42cfd74d65d832137e20e193c960802afba73b5d38sm sInterpolator.set(object.getVelocity().x, object.getTargetVelocity().x, 43cfd74d65d832137e20e193c960802afba73b5d38sm object.getAcceleration().x); 44cfd74d65d832137e20e193c960802afba73b5d38sm float offsetX = sInterpolator.interpolate(timeDelta); 45cfd74d65d832137e20e193c960802afba73b5d38sm float newX = object.getPosition().x + offsetX; 46cfd74d65d832137e20e193c960802afba73b5d38sm float newVelocityX = sInterpolator.getCurrent(); 47cfd74d65d832137e20e193c960802afba73b5d38sm 48cfd74d65d832137e20e193c960802afba73b5d38sm sInterpolator.set(object.getVelocity().y, object.getTargetVelocity().y, 49cfd74d65d832137e20e193c960802afba73b5d38sm object.getAcceleration().y); 50cfd74d65d832137e20e193c960802afba73b5d38sm float offsetY = sInterpolator.interpolate(timeDelta); 51cfd74d65d832137e20e193c960802afba73b5d38sm float newY = object.getPosition().y + offsetY; 52cfd74d65d832137e20e193c960802afba73b5d38sm float newVelocityY = sInterpolator.getCurrent(); 53cfd74d65d832137e20e193c960802afba73b5d38sm 54cfd74d65d832137e20e193c960802afba73b5d38sm if (object.positionLocked == false) { 55cfd74d65d832137e20e193c960802afba73b5d38sm object.getPosition().set(newX, newY); 56cfd74d65d832137e20e193c960802afba73b5d38sm } 57cfd74d65d832137e20e193c960802afba73b5d38sm 58cfd74d65d832137e20e193c960802afba73b5d38sm object.getVelocity().set(newVelocityX, newVelocityY); 59cfd74d65d832137e20e193c960802afba73b5d38sm } 60cfd74d65d832137e20e193c960802afba73b5d38sm 61cfd74d65d832137e20e193c960802afba73b5d38sm} 62