ConcreteAsteroid4.cpp

00001 #include "uLCD_4DGL.h"
00002 #include "ConcreteAsteroid4.h"
00003 #include "AbsAst.h"
00004 #include <math.h>
00005 
00006 extern int asteroid_sprite_4;
00007 extern uLCD_4DGL uLCD;
00008 
00009 #define ASTEROID_HEIGHT 12
00010 #define ASTEROID_WIDTH 15
00011 #define SPRITE_MAX 15
00012 #define SCREEN_MAX 125
00013 #define SCREEN_MIN 1
00014 #define NUM_ASTEROIDS 4
00015 
00016 ConcreteAsteroid4::ConcreteAsteroid4(){
00017     //START IN RANDOM YPOS AND ZERO XPOS
00018     xpos = 0;
00019     ypos = (rand() % SCREEN_MAX );;
00020     //VELOCITY VECTOR, Y VECTOR IS -5 TO +5, X VECTOR IS 1 TO 11
00021     dx = (rand() % 10) +1 ;
00022     dy = (rand() % 10 -5);
00023 }
00024 
00025 void ConcreteAsteroid4::draw(){
00026         uLCD.BLIT(xpos, ypos, ASTEROID_WIDTH, ASTEROID_HEIGHT, &asteroid_sprite_4);
00027     }
00028     
00029 // MOVE BY ONE UNIT OF THE VELOCITY VECTOR
00030 void ConcreteAsteroid4::update(){
00031      xpos= xpos + dx;
00032      ypos = ypos + dy;
00033 }