Jeffery Hurley / Mbed OS Asteroids

Simple starter skeleton for asteroids video game.

Dependencies:   PinDetect

Sprite.cpp@5:454ff3197a74, 2021-04-01 (annotated)

Committer:
jhurley31
Date:
Thu Apr 01 20:09:47 2021 +0000
Revision:
5:454ff3197a74
Parent:
3:98aa3db6a48f 
Updating OS

Who changed what in which revision?

UserRevisionLine numberNew contents of line
jhurley31 3:98aa3db6a48f 1 #include <math.h>
jhurley31 2:30020ddfccf6 2 #include "Sprite.h"
jhurley31 3:98aa3db6a48f 3 #include "uLCD_4DGL.h"
jhurley31 3:98aa3db6a48f 4 #include "graphic.h"
jhurley31 3:98aa3db6a48f 5
jhurley31 2:30020ddfccf6 6
jhurley31 3:98aa3db6a48f 7 extern uLCD_4DGL guLCD;
jhurley31 3:98aa3db6a48f 8 extern double gTimeStep;
jhurley31 3:98aa3db6a48f 9 extern double gOriginX;
jhurley31 3:98aa3db6a48f 10 extern double gOriginY;
jhurley31 3:98aa3db6a48f 11
jhurley31 2:30020ddfccf6 12 Sprite::Sprite():
jhurley31 3:98aa3db6a48f 13 m_xCenter(gOriginX),
jhurley31 3:98aa3db6a48f 14 m_yCenter(gOriginY),
jhurley31 3:98aa3db6a48f 15 m_DirX(0.0),
jhurley31 3:98aa3db6a48f 16 m_DirY(0.0),
jhurley31 3:98aa3db6a48f 17 m_Velocity(0.0),
jhurley31 3:98aa3db6a48f 18 m_color(WHITE),
jhurley31 3:98aa3db6a48f 19 m_RotationVelocity(0.0),
jhurley31 3:98aa3db6a48f 20 m_RotationDirection(NONE),
jhurley31 3:98aa3db6a48f 21 m_numPoints(0),
jhurley31 3:98aa3db6a48f 22 m_bIsValid(false)
jhurley31 3:98aa3db6a48f 23 {
jhurley31 3:98aa3db6a48f 24
jhurley31 3:98aa3db6a48f 25 }
jhurley31 3:98aa3db6a48f 26 /////////////////////////////////////////////////////////////////////////
jhurley31 3:98aa3db6a48f 27 /////////////////////////////////////////////////////////////////////////
jhurley31 3:98aa3db6a48f 28 // move
jhurley31 3:98aa3db6a48f 29 // Erase Sprite from current location
jhurley31 3:98aa3db6a48f 30 // Move the sprite to the new location
jhurley31 3:98aa3db6a48f 31 // Draw sprite at new location
jhurley31 3:98aa3db6a48f 32 void Sprite::move()
jhurley31 2:30020ddfccf6 33 {
jhurley31 3:98aa3db6a48f 34
jhurley31 3:98aa3db6a48f 35 // Erase object
jhurley31 3:98aa3db6a48f 36 draw(true);
jhurley31 3:98aa3db6a48f 37
jhurley31 3:98aa3db6a48f 38 // Translate to the origin all points around the origin using the center points
jhurley31 3:98aa3db6a48f 39 for (int ii = 0 ; ii < m_numPoints ; ++ii)
jhurley31 3:98aa3db6a48f 40 {
jhurley31 3:98aa3db6a48f 41 m_xPoints[ii] -= m_xCenter;
jhurley31 3:98aa3db6a48f 42 m_yPoints[ii] -= m_yCenter;
jhurley31 3:98aa3db6a48f 43 }
jhurley31 3:98aa3db6a48f 44
jhurley31 3:98aa3db6a48f 45 // Rotate around the origin
jhurley31 3:98aa3db6a48f 46 float tmpX, tmpY;
jhurley31 3:98aa3db6a48f 47 for (int ii = 0 ; ii < m_numPoints ; ++ii)
jhurley31 3:98aa3db6a48f 48 {
jhurley31 3:98aa3db6a48f 49 tmpX = m_xPoints[ii]*std::cos(m_RotationVelocity*PI/180.0) - m_yPoints[ii]*std::sin(m_RotationVelocity*PI/180.0);
jhurley31 3:98aa3db6a48f 50 tmpY = m_yPoints[ii]*std::cos(m_RotationVelocity*PI/180.0) + m_xPoints[ii]*std::sin(m_RotationVelocity*PI/180.0);
jhurley31 3:98aa3db6a48f 51
jhurley31 3:98aa3db6a48f 52 m_xPoints[ii] = tmpX;
jhurley31 3:98aa3db6a48f 53 m_yPoints[ii] = tmpY;
jhurley31 3:98aa3db6a48f 54 }
jhurley31 3:98aa3db6a48f 55 // Translate back to original location
jhurley31 3:98aa3db6a48f 56 for (int ii = 0 ; ii < m_numPoints ; ++ii)
jhurley31 3:98aa3db6a48f 57 {
jhurley31 3:98aa3db6a48f 58 m_xPoints[ii] += m_xCenter;
jhurley31 3:98aa3db6a48f 59 m_yPoints[ii] += m_yCenter;
jhurley31 3:98aa3db6a48f 60 }
jhurley31 3:98aa3db6a48f 61 // Move to new location
jhurley31 3:98aa3db6a48f 62 for (int ii = 0 ; ii < (m_numPoints-1) ; ++ii)
jhurley31 3:98aa3db6a48f 63 {
jhurley31 3:98aa3db6a48f 64 m_xPoints[ii] += m_DirX*m_Velocity*(gTimeStep);
jhurley31 3:98aa3db6a48f 65 m_yPoints[ii] += m_DirY*m_Velocity*(gTimeStep);
jhurley31 3:98aa3db6a48f 66 }
jhurley31 3:98aa3db6a48f 67 m_xCenter += m_DirX*m_Velocity*(gTimeStep);
jhurley31 3:98aa3db6a48f 68 m_yCenter += m_DirX*m_Velocity*(gTimeStep);
jhurley31 3:98aa3db6a48f 69 // Draw at the new location
jhurley31 3:98aa3db6a48f 70 draw(false);
jhurley31 3:98aa3db6a48f 71
jhurley31 3:98aa3db6a48f 72 }
jhurley31 3:98aa3db6a48f 73 /////////////////////////////////////////////////////////////////////////
jhurley31 3:98aa3db6a48f 74 /////////////////////////////////////////////////////////////////////////
jhurley31 3:98aa3db6a48f 75 // draw sprite at new location
jhurley31 3:98aa3db6a48f 76 void Sprite::draw(bool bErase)
jhurley31 3:98aa3db6a48f 77 {
jhurley31 3:98aa3db6a48f 78 int currentColor = BLACK;
jhurley31 3:98aa3db6a48f 79 if (!bErase)
jhurley31 3:98aa3db6a48f 80 {
jhurley31 3:98aa3db6a48f 81 currentColor = m_color;
jhurley31 3:98aa3db6a48f 82 }
jhurley31 2:30020ddfccf6 83
jhurley31 3:98aa3db6a48f 84 if (m_numPoints < 2)
jhurley31 3:98aa3db6a48f 85 {
jhurley31 3:98aa3db6a48f 86 return;
jhurley31 3:98aa3db6a48f 87 }
jhurley31 3:98aa3db6a48f 88 else if (m_numPoints == 2)
jhurley31 3:98aa3db6a48f 89 {
jhurley31 3:98aa3db6a48f 90 guLCD.line((int)m_xPoints[m_numPoints-1], (int)m_yPoints[m_numPoints-1] , (int)m_xPoints[0], (int)m_yPoints[0], currentColor);
jhurley31 3:98aa3db6a48f 91 }
jhurley31 3:98aa3db6a48f 92 else
jhurley31 3:98aa3db6a48f 93 {
jhurley31 3:98aa3db6a48f 94 for (int ii = 0 ; ii < (m_numPoints-1) ; ++ii)
jhurley31 3:98aa3db6a48f 95 {
jhurley31 3:98aa3db6a48f 96 guLCD.line((int)m_xPoints[ii], (int)m_yPoints[ii] , (int)m_xPoints[ii+1], (int)m_yPoints[ii+1], currentColor);
jhurley31 3:98aa3db6a48f 97 }
jhurley31 3:98aa3db6a48f 98 // go from last point to first point
jhurley31 3:98aa3db6a48f 99 guLCD.line((int)m_xPoints[m_numPoints-1], (int)m_yPoints[m_numPoints-1] , (int)m_xPoints[0], (int)m_yPoints[0], currentColor);
jhurley31 3:98aa3db6a48f 100 }
jhurley31 3:98aa3db6a48f 101
jhurley31 3:98aa3db6a48f 102 }
jhurley31 3:98aa3db6a48f 103 /////////////////////////////////////////////////////////////////////////
jhurley31 3:98aa3db6a48f 104 /////////////////////////////////////////////////////////////////////////
jhurley31 3:98aa3db6a48f 105 // addPoint
jhurley31 3:98aa3db6a48f 106 // Adds a point to the vector of points
jhurley31 3:98aa3db6a48f 107 void Sprite::addPoint(int x, int y)
jhurley31 2:30020ddfccf6 108 {
jhurley31 3:98aa3db6a48f 109 m_xPoints[m_numPoints] = x;
jhurley31 3:98aa3db6a48f 110 m_yPoints[m_numPoints] = y;
jhurley31 3:98aa3db6a48f 111 m_numPoints++;
jhurley31 3:98aa3db6a48f 112 if (m_numPoints == NUM_POINTS)
jhurley31 3:98aa3db6a48f 113 {
jhurley31 3:98aa3db6a48f 114 m_numPoints = 0;
jhurley31 3:98aa3db6a48f 115 }
jhurley31 3:98aa3db6a48f 116 }
jhurley31 3:98aa3db6a48f 117