![](/media/cache/profiles/dream_vangogh.jpg.50x50_q85.jpg)
NXP Rapid IoT prototyping kit port of Silabs "hungry gecko" smake-like game. https://os.mbed.com/teams/SiliconLabs/code/Hungry_gecko/
Dependencies: lib_sx9500 GraphicsDisplay ColorMemLCD Large_fonts
See a detailed description of this project on Hackster.io . https://www.hackster.io/marcomerli/riotwear-snake-ca6dfc
Diff: gecko.cpp
- Revision:
- 80:77210aa1ad9c
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/gecko.cpp Thu Dec 26 16:47:58 2019 +0000 @@ -0,0 +1,246 @@ +/***************************************************************************//** + * @file gecko.cpp + * @brief class for creating a gecko-like object and keeps track of its momvement + ******************************************************************************* + * @section License + * <b>(C) Copyright 2015 Silicon Labs, http://www.silabs.com</b> + ******************************************************************************* + * + * Permission is granted to anyone to use this software for any purpose, + * including commercial applications, and to alter it and redistribute it + * freely, subject to the following restrictions: + * + * 1. The origin of this software must not be misrepresented; you must not + * claim that you wrote the original software. + * 2. Altered source versions must be plainly marked as such, and must not be + * misrepresented as being the original software. + * 3. This notice may not be removed or altered from any source distribution. + * + * DISCLAIMER OF WARRANTY/LIMITATION OF REMEDIES: Silicon Labs has no + * obligation to support this Software. Silicon Labs is providing the + * Software "AS IS", with no express or implied warranties of any kind, + * including, but not limited to, any implied warranties of merchantability + * or fitness for any particular purpose or warranties against infringement + * of any proprietary rights of a third party. + * + * Silicon Labs will not be liable for any consequential, incidental, or + * special damages, or any other relief, or for any claim by any third party, + * arising from your use of this Software. + * + ******************************************************************************/ + +#include "gecko.h" + +/* Number of pixels used in the Gecko head */ +#define NPIXHEAD 16 +/* Number of pixels used in one Gecko part */ +#define NPARTPIXEL 21 + +/* + * Pixel map for a gecko part and head + * y-crd is encoded in the 4 most significant bits, x-crd is encoded in the 4 least significant bits + * The upper left corner of the part is assigned coordinates (x,y)=(0,0) + */ + +const uint8_t head_px_map[NPIXHEAD] = {0x03, 0x12, 0x14, 0x21, 0x25, 0x30, 0x32, 0x34, 0x36, 0x40, 0x46, 0x51, 0x55, 0x62, 0x63, 0x64}; +const uint8_t gecko_px_map[NPARTPIXEL] = {0x02, 0x03, 0x04, 0x11, 0x15, 0x20, 0x23, 0x26, 0x30, 0x32, 0x33, 0x34, 0x36, 0x40, 0x43, 0x46, 0x51, 0x55, 0x62, 0x63, 0x64}; + +Gecko::Gecko():_length(3){ + _head.init(3, 3, UP, head_px_map, NPIXHEAD); + _last = _length-1; + for (int i=0;i<_length;i++){ + _position[i] = (_head.getY() + i +1)*BOARD_WIDTH + _head.getX(); + } + +} + +void Gecko::move(ColorMemLCD &display, Direction dir){ + + // Remove the last part of the gecko + this->removePart(display, this->getX(_last)*STEPSIZE + BOARDERWIDTH/2, (this->getY(_last)+TOPEDGE)*STEPSIZE + BOARDERWIDTH/2); + + // Remove head + _head.remove(display); + + // Update the part next to the head + _head.setDir(dir); + _position[_last] = _head.getY()*BOARD_WIDTH + _head.getX(); + + switch(dir){ + case UP: + if (_head.getY() == 0) + { + _head.setY(BOARD_HEIGHT-1); + } + else + { + _head.setY(_head.getY() - 1); + } + break; + case DOWN: + if ( _head.getY() == (BOARD_HEIGHT-1)) + { + _head.setY(0); + } + else + { + _head.setY(_head.getY() + 1); + } + break; + case RIGHT: + if (_head.getX() == (BOARD_WIDTH-1)) + { + _head.setX(0); + } + else + { + _head.setX(_head.getX() + 1); + } + break; + case LEFT: + if (_head.getX() == 0) + { + _head.setX(BOARD_WIDTH-1); + } + else + { + _head.setX(_head.getX() - 1); + } + break; + } + + // Draw the parts of the gecko which have been moved + _head.draw(display); + this->drawPart(display, this->getX(_last)*STEPSIZE + BOARDERWIDTH/2, (this->getY(_last)+TOPEDGE)*STEPSIZE + BOARDERWIDTH/2); + + // Update the index of the last part + if (_last == 0){ + _last += _length; + } + _last -= 1; +} + +void Gecko::draw(ColorMemLCD &display) const{ + _head.draw(display); + + // Loop over indices of all parts of the gecko + for (uint8_t i=0;i<_length;i++){ + this->drawPart(display, this->getX(i)*STEPSIZE + BOARDERWIDTH/2, (this->getY(i)+TOPEDGE)*STEPSIZE + BOARDERWIDTH/2); + } +} + +bool Gecko::selfCollision() const{ + /* Check if some pixels have the same coordinate */ + for (int i=0;i<_length;i++) + { + if ((_head.getX()==this->getX(i)) && (_head.getY()==this->getY(i))){ + return true; + } + } + return false; +} + +void Gecko::increaseLength(ColorMemLCD &display, Direction dir) +{ + if ((_length + 1)> MAXLENGTH) return; + + // Store the tail of the gecko + uint8_t tempPos = _position[_last] ; + + // Move the gecko + this->move(display, dir); + + uint8_t temp[MAXLENGTH]; + + // Copy the front of the gecko + for (uint8_t i = _last + 1;i<_length;i++) + { + temp[i] = _position[i]; + } + + // Insert the "old" tail + _position[_last + 1] = tempPos; + + // Insert the front of the gecko + for (uint8_t i = _last + 1;i<_length;i++) + { + _position[i+1] = temp[i]; + } + + // Draw last part of the gecko + this->drawPart(display, this->getX(_last+1)*STEPSIZE + BOARDERWIDTH/2, (this->getY(_last+1)+TOPEDGE)*STEPSIZE + BOARDERWIDTH/2); + + + // Update length and position of last + _length += 1; + _last += 1; +} + +bool Gecko::headOccupiesTile(uint8_t x_ref, uint8_t y_ref) const{ + return ((x_ref == _head.getX()) && (y_ref == _head.getY())); +} + +bool Gecko::occupiesTile(uint8_t x_ref, uint8_t y_ref) const{ + if ( (x_ref == _head.getX()) && (y_ref == _head.getY()) ){ + return true; + } + + for (uint8_t i=0;i<_length;i++) + { + if ((x_ref == this->getX(i)) && (y_ref == this->getY(i)) ) + { + return true; + } + } + return false; +} + +void Gecko::drawPart(ColorMemLCD &display, uint8_t x, uint8_t y) const +{ + // + // x and y denotes the coordinates of the top left corner + // Assumes that x and y are given such that the entire part is on the screen + +#if(MULTI_UPDATE) + display.window( BOARDERWIDTH/2, y, LCD_DISP_WIDTH - BOARDERWIDTH/2, STEPSIZE ); +#endif + + for (int i=0;i<NPARTPIXEL;i++){ + display.pixel(x + static_cast<uint8_t>(gecko_px_map[i] & 0xF), y + static_cast<uint8_t>( (gecko_px_map[i] >> 4) & 0xF), FOREGROUND_COLOR); + } + +#if(MULTI_UPDATE) + display.update(); +#endif + +} + +void Gecko::removePart(ColorMemLCD &display, uint8_t x, uint8_t y) const +{ + + // x and y denotes the coordinates of the top left corner + // Assumes that x and y are given such that the part is on the screen + +#if(MULTI_UPDATE) + display.window( BOARDERWIDTH/2, y, LCD_DISP_WIDTH - BOARDERWIDTH/2, STEPSIZE ); +#endif + + for (int i=0;i<NPARTPIXEL;i++){ + display.pixel(x + static_cast<uint8_t>(gecko_px_map[i] & 0xF), y + static_cast<uint8_t>( (gecko_px_map[i] >> 4) & 0xF), BACKGROUND_COLOR); + } + +#if(MULTI_UPDATE) + display.update(); +#endif + +} + +uint8_t Gecko::getX(uint8_t indx) const{ + return _position[indx] - BOARD_WIDTH*(_position[indx]/BOARD_WIDTH); +} + +uint8_t Gecko::getY(uint8_t indx) const{ + return _position[indx]/BOARD_WIDTH; +} + +