游戏手柄代码

package handshank.demo; import android.content.Context; import android.graphics.Bitmap; import android.graphics.Canvas; import android.graphics.Color; import android.graphics.Matrix; import android.graphics.Paint; import android.graphics.PointF; import android.view.MotionEvent; /** * @author Administrator * @version 创建时间：2011-6-27 下午03:38:11 类说明:手柄类 */ public class HandShank { public static final int JOYSTICK_UP = 0; public static final int JOYSTICK_DOWN = 1; public static final int JOYSTICK_LEFT = 2; public static final int JOYSTICK_RIGHT = 3; public static final int JOYSTICK_SHOOT = 4; public static final int JOYSTICK_JUMP = 5; /** * 最大点击触屏个数 */ public static final int MAX_TOUCHPOINTS = 4; Bitmap joystick_roundImg = null; // 摇杆圆 Bitmap[] joystick_upImg = null; // 上 Bitmap[] joystick_downImg = null;// 下 Bitmap[] joystick_leftImg = null; // 左 Bitmap[] joystick_rightImg = null; // 右 Bitmap[] joystick_shootImg = null; // 攻击 Bitmap[] joystick_jumpImg = null; // 跳 int[] isFocused;// 用来存储模拟按键的按键状态 PointF pc,p1,p2,p3,p4,p5,shootPc,jumpPc; float roundH,roundW,roundr; float d; float shootImgR,jumpImgR; Matrix matrix; public HandShank(Context context) { joystick_roundImg = MyResource.getResImg(context, "joystick_round"); joystick_upImg = new Bitmap[2]; joystick_upImg[0] = MyResource.getResImg(context, "joystick_up"); joystick_upImg[1] = MyResource.getResImg(context, "joystick_upd"); joystick_downImg = new Bitmap[2]; joystick_downImg[0] = MyResource.getResImg(context, "joystick_down"); joystick_downImg[1] = MyResource.getResImg(context, "joystick_downd"); joystick_leftImg = new Bitmap[2]; joystick_leftImg[0] = MyResource.getResImg(context, "joystick_left"); joystick_leftImg[1] = MyResource.getResImg(context, "joystick_leftd"); joystick_rightImg = new Bitmap[2]; joystick_rightImg[0] = MyResource.getResImg(context, "joystick_right"); joystick_rightImg[1] = MyResource.getResImg(context, "joystick_rightd"); joystick_shootImg = new Bitmap[2]; joystick_shootImg[0] = MyResource.getResImg(context, "joystick_shoot"); joystick_shootImg[1] = MyResource.getResImg(context, "joystick_shootd"); joystick_jumpImg = new Bitmap[2]; joystick_jumpImg[0] = MyResource.getResImg(context, "joystick_jump"); joystick_jumpImg[1] = MyResource.getResImg(context, "joystick_jumpd"); isFocused = new int[7]; initData(); } public void initData() { roundH = joystick_roundImg.getHeight(); roundW = joystick_roundImg.getWidth(); d = (float) (Math.sqrt(2.0) * roundW / 4f); roundr = roundW / 2f; shootImgR = joystick_shootImg[0].getWidth() / 2; jumpImgR = joystick_jumpImg[0].getWidth() / 2 + 10; float roundy = MySurfaceView.screenH - roundH / 2f; pc = new PointF(roundW / 2, roundy); p1 = new PointF(roundr, roundy - roundr); p2 = new PointF(0, roundy - roundr); p3 = new PointF(0, roundy + roundr); p4 = new PointF(2 * roundr, roundy + roundr); p5 = new PointF(2 * roundr, roundy - roundr); shootPc = new PointF(MySurfaceView.screenW - 3 * shootImgR, MySurfaceView.screenH - shootImgR); jumpPc = new PointF(MySurfaceView.screenW - 1 * jumpImgR, MySurfaceView.screenH - jumpImgR - shootImgR); matrix = new Matrix(); } public void touch(MotionEvent event) { int pointerCount = event.getPointerCount(); if (pointerCount > MAX_TOUCHPOINTS) { pointerCount = MAX_TOUCHPOINTS; } for (int i = 0; i < isFocused.length; i++) { isFocused[i] = 0; } for (int i = 0; i < pointerCount; i++) { float x = event.getX(i); float y = event.getY(i); PointF p = new PointF(x, y); switch (event.getAction()) { case MotionEvent.ACTION_DOWN: case MotionEvent.ACTION_MOVE: if (ModelCheck.inTriangle(p, p3, p2, pc)) {// 左 isFocused[JOYSTICK_LEFT] = 1; } else if (ModelCheck.inTriangle(p, p4, p5, pc)) {// 右 isFocused[JOYSTICK_RIGHT] = 1; } else if (ModelCheck.inTriangle(p, p2, p5, pc)) {// 上 isFocused[JOYSTICK_UP] = 1; }else if(ModelCheck.inTriangle(p,p3,p4,pc)){ isFocused[JOYSTICK_DOWN] =1; } else if (ModelCheck.pointInCircle(p, shootPc, shootImgR)) {// AT isFocused[JOYSTICK_SHOOT] = 1; } else if (ModelCheck.pointInCircle(p, jumpPc, jumpImgR)) {// JUMP isFocused[JOYSTICK_JUMP] = 1; } } } } /** * 恢复虚拟按键状态 */ public void reJoystickStatus() { for (int i = 0; i < isFocused.length; i++) { isFocused[i] = 0; } } /** * 绘制手柄 * * @param canvas * @param x * @param y * @param paint * 千万要注意：此时绘制的位置数据已经是缩放了的数据了，所以需要返回到原来的数据， * 因为利用了双缓存，最外层还套了一成缩放，所以需要除掉缩放了得数据 * 放置此处的原因：因为绘图不需要对数据进行大量的修改，逻辑也是没有的，所以放在此处返回最不容易将数据弄错 */ public void draw(Canvas canvas, Paint paint) { canvas.save(); canvas.drawBitmap(joystick_roundImg, pc.x - roundr, pc.y - roundr, paint); matrix.setTranslate(pc.x - d + 7, pc.y - roundr + 9); canvas.drawBitmap(joystick_upImg[isFocused[JOYSTICK_UP]], matrix, paint); matrix.setTranslate(pc.x - d + 7, pc.y + 2); canvas.drawBitmap(joystick_downImg[isFocused[JOYSTICK_DOWN]], matrix, paint); matrix.setTranslate(pc.x - roundr + 9, pc.y - d + 7); canvas.drawBitmap(joystick_leftImg[isFocused[JOYSTICK_LEFT]], matrix, paint); matrix.setTranslate(pc.x + 2, pc.y - d + 7); canvas.drawBitmap(joystick_rightImg[isFocused[JOYSTICK_RIGHT]], matrix, paint); canvas.drawBitmap(joystick_shootImg[isFocused[JOYSTICK_SHOOT]], shootPc.x - shootImgR, shootPc.y - shootImgR, paint); canvas.drawBitmap(joystick_jumpImg[isFocused[JOYSTICK_JUMP]], jumpPc.x - jumpImgR, jumpPc.y - jumpImgR, paint); canvas.restore(); } }