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// Includes, namespace and prototypes
#include "template.h"
using namespace AGK;
app App;

// Constants for the screen resolution
const int SCREEN_WIDTH = 640, SCREEN_HEIGHT = 480;

// Constants for the sprite indices
const int BALL1_SPRITE = 1;
const int BALL2_SPRITE = 2;

// Constant for ball 1's initial X position
const float BALL1_X = 0;

// Constant for ball 2's initial X position
const float BALL2_X = 511;

// Constant for the Y position of both sprites
const float BALL_Y = 175;

// Constant for the distance to move each frame
const float DISTANCE = 1;

// Begin app, called once at the start
void app::Begin( void )
{
	// Set the virtual resolution and window title
	agk::SetVirtualResolution(SCREEN_WIDTH, SCREEN_HEIGHT);
	agk::SetWindowTitle("Randomly Moving Bowling Balls - Jacob Henley");

	// Create the sprites
	agk::CreateSprite(BALL1_SPRITE, "BowlingBall1.png");
	agk::CreateSprite(BALL2_SPRITE, "BowlingBall2.png");

	// Set the position of each sprite
	agk::SetSpritePosition(BALL1_SPRITE, BALL1_X, BALL_Y);
	agk::SetSpritePosition(BALL2_SPRITE, BALL2_X, BALL_Y);
}

// Main loop, called every frame
void app::Loop ( void )
{
	// Get the X-coordinate of each sprite
	float ball1x = agk::GetSpriteX(BALL1_SPRITE);
	float ball2x = agk::GetSpriteX(BALL2_SPRITE);

	// Determine if the two sprites have collided
	if (agk::GetSpriteCollision(BALL1_SPRITE, BALL2_SPRITE))
	{
		// Reset the sprites to random locations
		agk::SetSpriteX(BALL1_SPRITE, BALL1_X);
		agk::SetSpriteX(BALL2_SPRITE, BALL2_X);
	}
	else
	{
		// Move ball 1 to the right
		agk::SetSpriteX(BALL1_SPRITE, ball1x + DISTANCE);

		// Move ball 2 to the left
		agk::SetSpriteX(BALL2_SPRITE, ball2x - DISTANCE);
	}

	// Refresh the screen
	agk::Sync();
}

// Called when the app ends
void app::End ( void )
{
}