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Snake game that combines DMD and IRreceiver
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Rhys Weatherley
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31
doc/ir-snake.dox
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31
doc/ir-snake.dox
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/*
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* Copyright (C) 2012 Southern Storm Software, Pty Ltd.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included
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* in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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* DEALINGS IN THE SOFTWARE.
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*/
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/**
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\file ir-snake.dox
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\page ir_snake Snake Video Game Using an Infrared Remote Control
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This example demonstrates the use of the DMD and IRreceiver classes.
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The full source code follows:
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\include IR/examples/Snake/Snake.pde
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*/
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@ -49,6 +49,8 @@ LCD shield.
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\li \ref dmd_demo "Demo" that shows off various bitmap drawing features.
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\li \ref dmd_running_figure "RunningFigure" example that demonstrates how
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to draw and animate bitmaps.
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\li \ref ir_snake "Snake" game that combines the dot matrix display with
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IRreceiver to make a simple video game.
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\section main_BlinkLED BlinkLED Utility Library
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@ -90,6 +92,8 @@ realtime clock and the LCD library to implement an alarm clock.
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\li IRreceiver class that receives incoming RC-5 commands from an
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infrared remote control.
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\li \ref ir_dumpir "DumpIR" example that dumps all incoming RC-5 commands.
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\li \ref ir_snake "Snake" game that combines DMD with an infrared remote
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control to make a simple video game.
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\section main_other Other
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190
libraries/IR/examples/Snake/Snake.pde
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190
libraries/IR/examples/Snake/Snake.pde
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/*
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* Copyright (C) 2012 Southern Storm Software, Pty Ltd.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included
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* in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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* DEALINGS IN THE SOFTWARE.
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*/
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#include <IRreceiver.h>
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#include <DMD.h>
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#include <Mono5x7.h>
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#define SNAKE_ADVANCE_TIME 150
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#define SNAKE_BLINK_TIME 500
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#define SNAKE_INC_STEPS 5
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#define SNAKE_MAX_LENGTH 50
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#define SNAKE_START_LENGTH 10
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struct Point
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{
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int x, y;
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};
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DMD display;
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IRreceiver ir;
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bool paused;
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bool gameOver;
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bool waitForStart;
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bool snakeDrawn;
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unsigned long lastChange;
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Point direction;
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Point snakeParts[SNAKE_MAX_LENGTH];
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int snakeLength;
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int incStep;
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ISR(TIMER1_OVF_vect)
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{
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display.refresh();
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}
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void setup() {
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display.enableTimer1();
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display.setFont(Mono5x7);
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startGame();
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}
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void drawSnake(Bitmap::Color color) {
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for (int index = 0; index < snakeLength; ++index)
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display.setPixel(snakeParts[index].x, snakeParts[index].y, color);
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}
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void loop() {
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// Handle the "Game Over" state. Any key press starts a new game.
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int cmd = ir.command();
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if (gameOver) {
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if (cmd != -1 && (cmd & IRreceiver::AUTO_REPEAT) == 0)
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startGame();
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return;
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}
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// Pause the game if waiting for the first start. While waiting,
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// blink the location of the snake to help the player get their bearings.
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if (waitForStart) {
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if (cmd == -1) {
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if ((millis() - lastChange) >= SNAKE_BLINK_TIME) {
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snakeDrawn = !snakeDrawn;
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drawSnake(snakeDrawn ? Bitmap::White : Bitmap::Black);
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lastChange += SNAKE_BLINK_TIME;
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}
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return;
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}
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drawSnake(Bitmap::White);
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waitForStart = false;
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snakeDrawn = true;
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lastChange = millis();
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}
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// Process commands from the player.
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switch (cmd) {
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// Both arrow keys and numbers can be used to control the direction,
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// in case the remote control does not have arrow keys.
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case RC5_LEFT: case RC5_4:
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changeDirection(-1, 0);
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break;
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case RC5_RIGHT: case RC5_6:
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changeDirection(1, 0);
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break;
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case RC5_UP: case RC5_2:
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changeDirection(0, -1);
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break;
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case RC5_DOWN: case RC5_8:
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changeDirection(0, 1);
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break;
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case RC5_PAUSE: case RC5_PLAY: case RC5_0:
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// Pause or resume the game.
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paused = !paused;
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lastChange = millis();
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break;
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case RC5_STOP: case RC5_STANDBY:
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// Stop the game and start a new one.
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startGame();
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break;
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}
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// Advance the snake position if not paused and the timeout has expired.
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if (!paused && (millis() - lastChange) >= SNAKE_ADVANCE_TIME) {
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++incStep;
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advanceSnake(incStep >= SNAKE_INC_STEPS);
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lastChange += SNAKE_ADVANCE_TIME;
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}
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}
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void startGame() {
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randomSeed(micros() + analogRead(A0)); // Analog read adds some noise.
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display.clear();
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display.drawRect(0, 0, display.width() - 1, display.height() - 1);
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for (int count = 0; count < 10; ++count) {
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int x, y;
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if (random(0, 2) == 0) {
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x = random(1, display.width() - 5);
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y = random(1, display.height() - 1);
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display.drawLine(x, y, x + 4, y);
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} else {
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x = random(1, display.width() - 1);
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y = random(1, display.height() - 3);
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display.drawLine(x, y, x, y + 2);
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}
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}
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paused = false;
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gameOver = false;
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waitForStart = true;
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snakeDrawn = true;
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lastChange = millis();
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direction.x = 1;
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direction.y = 0;
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incStep = 0;
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snakeLength = SNAKE_START_LENGTH;
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for (int index = 0; index < snakeLength; ++index) {
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snakeParts[index].x = 3 + index;
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snakeParts[index].y = 4;
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display.setPixel
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(snakeParts[index].x, snakeParts[index].y, Bitmap::White);
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}
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}
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void changeDirection(int x, int y) {
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direction.x = x;
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direction.y = y;
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}
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void advanceSnake(bool increase) {
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int x = snakeParts[snakeLength - 1].x + direction.x;
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int y = snakeParts[snakeLength - 1].y + direction.y;
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if (display.pixel(x, y) == Bitmap::White) {
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gameOver = true;
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display.clear();
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display.drawText(5, 0, "Game");
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display.drawText(3, 8, "Over!");
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return;
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}
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if (!increase || snakeLength >= SNAKE_MAX_LENGTH) {
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display.setPixel(snakeParts[0].x, snakeParts[0].y, Bitmap::Black);
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for (int index = 0; index < snakeLength - 1; ++index)
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snakeParts[index] = snakeParts[index + 1];
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} else {
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++snakeLength;
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}
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snakeParts[snakeLength - 1].x = x;
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snakeParts[snakeLength - 1].y = y;
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display.setPixel(x, y, Bitmap::White);
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if (increase)
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incStep = 0;
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}
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