asteroids/power.cpp at master · carljohan/asteroids · GitHub

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#include "power.h"
#include <cmath>

#define PI M_PI

using namespace std;

power::power(){

	x = 0;
	y = 0;
	type = 1;
	count = 0;

}

// Function to change properties
void power::set( int nx, int ny, int ntype ){

	x = nx;
	y = ny;
	type = ntype;

}

// Get functions
int power::getx(){

	return x;

}

int power::gety(){

	return y;

}

int power::getType(){

	return type;

}

// Check if ship has collided with powerup
int power::check_collision( double nx, double ny ){

	if(!type){
		return 0;
	}

	if( sqrt(pow(x-nx,2)+pow(y-ny,2)) <= 30 ){
		return 1;
	}

	return 0;

}

// Draw function
void power::draw( SDL_Surface* screen, Uint32 color ){

	if( type ){

		int size = 10;

		double ax = x+size*cos(0);
		double ay = y+size*sin(0);
		double bx = x+size*cos(PI/3);
		double by = y+size*sin(PI/3);
		double cx = x+size*cos(2*PI/3);
		double cy = y+size*sin(2*PI/3);
		double dx = x+size*cos(PI);
		double dy = y+size*sin(PI);
		double ex = x+size*cos(4*PI/3);
		double ey = y+size*sin(4*PI/3);
		double fx = x+size*cos(5*PI/3);
		double fy = y+size*sin(5*PI/3);

		Draw_Line(screen, ax,ay, bx,by, color);
		Draw_Line(screen, bx,by, cx,cy, color);
		Draw_Line(screen, cx,cy, dx,dy, color);
		Draw_Line(screen, dx,dy, ex,ey, color);
		Draw_Line(screen, ex,ey, fx,fy, color);
		Draw_Line(screen, fx,fy, ax,ay, color);

		size = 14;

		ax = x+size*cos(0);
		ay = y+size*sin(0);
		bx = x+size*cos(PI/3);
		by = y+size*sin(PI/3);
		cx = x+size*cos(2*PI/3);
		cy = y+size*sin(2*PI/3);
		dx = x+size*cos(PI);
		dy = y+size*sin(PI);
		ex = x+size*cos(4*PI/3);
		ey = y+size*sin(4*PI/3);
		fx = x+size*cos(5*PI/3);
		fy = y+size*sin(5*PI/3);

		// Adds rotation effect
		if (count <= 15){

			Draw_Line(screen, ax,ay, bx,by, color);
			Draw_Line(screen, cx,cy, dx,dy, color);
			Draw_Line(screen, ex,ey, fx,fy, color);

		}else{

			Draw_Line(screen, fx,fy, ax,ay, color);
			Draw_Line(screen, dx,dy, ex,ey, color);
			Draw_Line(screen, bx,by, cx,cy, color);

			if(count >= 30){
				count = 0;
			}

		}

	count++;
	}
}