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;
+}
+
+