Diff: Sprite.cpp

Revision:

3:98aa3db6a48f

Parent:

2:30020ddfccf6

--- a/Sprite.cpp	Sat Mar 02 16:11:43 2019 +0000
+++ b/Sprite.cpp	Thu Apr 01 19:10:58 2021 +0000
@@ -1,23 +1,117 @@
+#include <math.h>
 #include "Sprite.h"
+#include "uLCD_4DGL.h"
+#include "graphic.h"
+
 
-// Default Constructor
+extern uLCD_4DGL guLCD;
+extern double gTimeStep;
+extern double gOriginX;
+extern double gOriginY;
+
 Sprite::Sprite():
-m_CurrentDirection(NO_DIR), 
-m_DesiredDirection(NO_DIR),
-m_RowPos(0),
-m_ColPos(0)
-{}
-// Constructor
-Sprite::Sprite(enDIRECTIONS inDir, unsigned int inRow, unsigned int inCol):
-m_CurrentDirection(inDir), 
-m_DesiredDirection(inDir),
-m_RowPos(inRow),
-m_ColPos(inCol)
+m_xCenter(gOriginX),
+m_yCenter(gOriginY),
+m_DirX(0.0), 
+m_DirY(0.0),
+m_Velocity(0.0),
+m_color(WHITE),
+m_RotationVelocity(0.0),
+m_RotationDirection(NONE),
+m_numPoints(0), 
+m_bIsValid(false)
+{
+ 
+}
+/////////////////////////////////////////////////////////////////////////
+/////////////////////////////////////////////////////////////////////////
+// move   
+// Erase Sprite from current location
+// Move the sprite to the new location 
+// Draw sprite at new location
+void Sprite::move()
 {
+
+    // Erase object
+    draw(true);
+ 
+    // Translate to the origin all points around the origin using the center points   
+    for (int ii = 0 ; ii < m_numPoints ; ++ii)
+    {
+        m_xPoints[ii] -= m_xCenter;
+        m_yPoints[ii] -= m_yCenter;
+    }     
+ 
+    // Rotate around the origin
+    float tmpX, tmpY;
+    for (int ii = 0 ; ii < m_numPoints ; ++ii)
+    {
+        tmpX = m_xPoints[ii]*std::cos(m_RotationVelocity*PI/180.0) - m_yPoints[ii]*std::sin(m_RotationVelocity*PI/180.0);
+        tmpY = m_yPoints[ii]*std::cos(m_RotationVelocity*PI/180.0) + m_xPoints[ii]*std::sin(m_RotationVelocity*PI/180.0); 
+        
+        m_xPoints[ii] = tmpX;
+        m_yPoints[ii] = tmpY;     
+    }    
+    // Translate back to original location
+    for (int ii = 0 ; ii < m_numPoints ; ++ii)
+    {
+        m_xPoints[ii] += m_xCenter;
+        m_yPoints[ii] += m_yCenter;
+    }          
+    // Move to new location
+    for (int ii = 0 ; ii < (m_numPoints-1) ; ++ii)
+    {
+        m_xPoints[ii] += m_DirX*m_Velocity*(gTimeStep);
+        m_yPoints[ii] += m_DirY*m_Velocity*(gTimeStep);
+    } 
+    m_xCenter += m_DirX*m_Velocity*(gTimeStep);
+    m_yCenter += m_DirX*m_Velocity*(gTimeStep);
+    // Draw at the new location    
+    draw(false);
+ 
+}
+/////////////////////////////////////////////////////////////////////////
+/////////////////////////////////////////////////////////////////////////
+// draw sprite at new location
+void Sprite::draw(bool bErase)
+{
+    int currentColor = BLACK;
+    if (!bErase)
+    {
+        currentColor = m_color;
+    }
     
-}    
-// SetDesiredDirectionToMove    
-void Sprite::SetDesiredDirectionToMove(enDIRECTIONS dir)
+    if (m_numPoints < 2)
+    {
+        return;
+    }
+    else if (m_numPoints == 2)
+    {
+        guLCD.line((int)m_xPoints[m_numPoints-1], (int)m_yPoints[m_numPoints-1] , (int)m_xPoints[0], (int)m_yPoints[0], currentColor);
+    }
+    else
+    {         
+        for (int ii = 0 ; ii < (m_numPoints-1) ; ++ii)
+        {
+            guLCD.line((int)m_xPoints[ii], (int)m_yPoints[ii] , (int)m_xPoints[ii+1], (int)m_yPoints[ii+1], currentColor);
+        }
+        // go from last point to first point
+        guLCD.line((int)m_xPoints[m_numPoints-1], (int)m_yPoints[m_numPoints-1] , (int)m_xPoints[0], (int)m_yPoints[0], currentColor);
+    }
+
+}
+/////////////////////////////////////////////////////////////////////////
+/////////////////////////////////////////////////////////////////////////
+// addPoint
+// Adds a point to the vector of points
+void Sprite::addPoint(int x, int y)
 {
-    m_DesiredDirection = dir;
-}
\ No newline at end of file
+    m_xPoints[m_numPoints] = x;
+    m_yPoints[m_numPoints] = y;
+    m_numPoints++;
+    if (m_numPoints == NUM_POINTS)
+    {
+        m_numPoints = 0;
+    }
+}
+