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https://github.com/isometimes/rpi4-osdev
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Controlling Breakout using the MacBook Pro trackpad over Bluetooth
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parent
3cea210167
commit
dbc2c6139b
3 changed files with 80 additions and 61 deletions
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@ -199,6 +199,34 @@ void moveRect(int oldx, int oldy, int width, int height, int shiftx, int shifty,
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}
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}
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void moveRectAbs(int oldx, int oldy, int width, int height, int newx, int newy, unsigned char attr)
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{
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unsigned int xcount = 0, ycount = 0;
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unsigned int bitmap[width][height]; // This is very unsafe if it's too big for the stack...
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unsigned int offs;
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// Save the bitmap
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while (xcount < width) {
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while (ycount < height) {
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offs = ((oldy + ycount) * pitch) + ((oldx + xcount) * 4);
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bitmap[xcount][ycount] = *((unsigned int*)(fb + offs));
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ycount++;
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}
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ycount=0;
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xcount++;
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}
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// Wipe it out with background colour
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drawRect(oldx, oldy, oldx + width, oldy + width, attr, 1);
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// Draw it again
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for (int i=newx;i<newx + width;i++) {
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for (int j=newy;j<newy + height;j++) {
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offs = (j * pitch) + (i * 4);
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*((unsigned int*)(fb + offs)) = bitmap[i-newx][j-newy];
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}
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}
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}
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void wait_msec(unsigned int n)
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{
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register unsigned long f, t, r;
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@ -6,4 +6,5 @@ void drawRect(int x1, int y1, int x2, int y2, unsigned char attr, int fill);
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void drawCircle(int x0, int y0, int radius, unsigned char attr, int fill);
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void drawLine(int x1, int y1, int x2, int y2, unsigned char attr);
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void moveRect(int oldx, int oldy, int width, int height, int shiftx, int shifty, unsigned char attr);
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void moveRectAbs(int oldx, int oldy, int width, int height, int newx, int newy, unsigned char attr);
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void wait_msec(unsigned int n);
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@ -25,7 +25,7 @@ unsigned int got_echo_name = 0;
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unsigned char echo_addr[6];
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unsigned int connected = 0;
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unsigned int connection_handle = 0;
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unsigned char dir = 1;
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unsigned char dir = 'l';
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void hci_poll2(unsigned char byte)
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{
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@ -150,47 +150,6 @@ void bt_conn()
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}
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}
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void acl_poll()
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{
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while (bt_isReadByteReady()) {
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unsigned char byte = bt_readByte();
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if (byte == HCI_EVENT_PKT) {
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unsigned char opcode = bt_waitReadByte();
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unsigned char length = bt_waitReadByte();
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for (int i=0;i<length;i++) bt_waitReadByte();
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} else if (byte == HCI_ACL_PKT) {
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unsigned char h1 = bt_waitReadByte();
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unsigned char h2 = bt_waitReadByte();
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unsigned int handle = h1 | (h2 & 0x0f);
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unsigned char flags = (h2 & 0xf0) >> 4;
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h1 = bt_waitReadByte();
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h2 = bt_waitReadByte();
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unsigned int length = h1 | (h2 << 8);
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unsigned char data[length];
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for (int i=0;i<length;i++) data[i] = bt_waitReadByte();
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length = data[0] | (data[1] << 8);
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unsigned int channel = data[2] | (data[3] << 8);
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unsigned char opcode = data[4];
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if (opcode == 0x1b) {
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unsigned int from_handle = data[5] | (data[6] << 8);
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if (length == 4) {
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dir = data[7];
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uart_byte(dir);
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}
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uart_writeText("\n");
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}
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}
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}
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}
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// The screen
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#define WIDTH 1920
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#define HEIGHT 1080
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@ -229,6 +188,7 @@ unsigned int numobjs = 0;
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struct Object objects[(ROWS * COLS) + (2 * NUM_LIVES)];
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struct Object *ball;
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struct Object *paddle;
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int paddlewidth = 80;
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void removeObject(struct Object *object)
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{
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@ -243,6 +203,13 @@ void moveObject(struct Object *object, int xoff, int yoff)
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object->y = object->y + yoff;
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}
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void moveObjectAbs(struct Object *object, int x, int y)
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{
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moveRectAbs(object->x, object->y, object->width, object->height, x, y, 0x00);
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object->x = x;
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object->y = y;
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}
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struct Object *detectCollision(struct Object *with, int xoff, int yoff)
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{
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for (int i=0; i<numobjs;i++) {
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@ -260,16 +227,6 @@ struct Object *detectCollision(struct Object *with, int xoff, int yoff)
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return 0;
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}
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// KEY HANDLER
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unsigned char getUart()
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{
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unsigned char ch = 0;
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if (uart_isReadByteReady()) ch = uart_readByte();
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return ch;
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}
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// OBJECT INITIALISERS
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void initBricks()
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@ -319,7 +276,6 @@ void initBall()
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void initPaddle()
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{
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int paddlewidth = 80;
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int paddleheight = 20;
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drawRect((WIDTH-paddlewidth)/2, (HEIGHT-MARGIN-paddleheight), (WIDTH-paddlewidth)/2 + paddlewidth, (HEIGHT-MARGIN), 0x11, 1);
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@ -348,6 +304,47 @@ void drawScoreboard(int score, int lives)
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drawString((WIDTH/2)-252, MARGIN-25, string, 0x0f, 3);
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}
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void acl_poll()
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{
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while (bt_isReadByteReady()) {
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unsigned char byte = bt_readByte();
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if (byte == HCI_EVENT_PKT) {
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unsigned char opcode = bt_waitReadByte();
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unsigned char length = bt_waitReadByte();
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for (int i=0;i<length;i++) bt_waitReadByte();
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} else if (byte == HCI_ACL_PKT) {
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unsigned char h1 = bt_waitReadByte();
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unsigned char h2 = bt_waitReadByte();
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unsigned int handle = h1 | (h2 & 0x0f);
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unsigned char flags = (h2 & 0xf0) >> 4;
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h1 = bt_waitReadByte();
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h2 = bt_waitReadByte();
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unsigned int length = h1 | (h2 << 8);
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unsigned char data[length];
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for (int i=0;i<length;i++) data[i] = bt_waitReadByte();
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length = data[0] | (data[1] << 8);
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unsigned int channel = data[2] | (data[3] << 8);
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unsigned char opcode = data[4];
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if (opcode == 0x1b) {
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unsigned int from_handle = data[5] | (data[6] << 8);
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if (length == 4) {
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dir = data[7];
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moveObjectAbs(paddle, MARGIN + (dir*((VIRTWIDTH - paddlewidth)/100)), paddle->y);
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}
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uart_writeText("\n");
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}
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}
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}
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}
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void main()
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{
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struct Object *foundObject;
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@ -405,13 +402,6 @@ void main()
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while (lives > 0 && bricks > 0) {
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acl_poll();
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// Get any waiting input and flush the buffer
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if (dir != 1) {
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if (dir == 2) if (paddle->x + paddle->width + (paddle->width / 2) <= WIDTH-MARGIN) moveObject(paddle, paddle->width / 2, 0);
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if (dir == 0) if (paddle->x >= MARGIN+(paddle->width / 2)) moveObject(paddle, -(paddle->width / 2), 0);
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}
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uart_loadOutputFifo();
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// Are we going to hit anything?
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foundObject = detectCollision(ball, velocity_x, velocity_y);
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@ -429,7 +419,7 @@ void main()
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}
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}
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wait_msec(4000); // Wait a little...
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wait_msec(0x2000);
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moveObject(ball, velocity_x, velocity_y);
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// Check we're in the game arena still
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