Paddle.cpp

//Headers to include
#include "Paddle.h"

Paddle::Paddle(SDL_Renderer* renderer, bool isRightPaddleSet, bool isAiSet)
{
	isRightPaddle = isRightPaddleSet;
	isAi = isAiSet;
	rendererInstance = renderer;

	width = height / (paddleImgSrcRect.h / paddleImgSrcRect.w);		//Calculates the width of the paddle using the height and size of the texture, so that the texture isn't stretched

	position.x = position.y = 0;
	speed = 5.f;
	edgeOffset = 25.f;

	if (isRightPaddle)
	{
		position.x = SCREEN_WIDTH - width - edgeOffset;
		position.y = (SCREEN_HEIGHT / 2) - (height / 2);
	}
	else
	{
		position.x = 0 + edgeOffset;
		position.y = (SCREEN_HEIGHT / 2) - (height / 2);
	}

	paddleRect.x = (int)position.x; paddleRect.y = (int)position.y;
	paddleRect.w = width; paddleRect.h = height;

	testThing.x = position.x;
	testThing.y = 0;
	testThing.w = paddleRect.w;
	testThing.h = SCREEN_HEIGHT;

	paddleTexture = SDL_CreateTextureFromSurface(rendererInstance, paddleTempSurface);
	if (!paddleTexture) std::cerr << "couldn't load paddle textrue";
	SDL_FreeSurface(paddleTempSurface);

}

void Paddle::Update(float frameSpeed)
{
	//Y vel is subtracted because position is from top right, and positive moving up is more common and makes more sense
	if (!isAi)
		position.y -= (speed * direction) * frameSpeed;
	
	//Old code to stop paddles from going off screen
	/*if (position.y < 0)
		position.y = 0;
	else if (position.y + height > SCREEN_HEIGHT)
		position.y = SCREEN_HEIGHT - height;*/

	paddleRect.x = position.x; paddleRect.y = position.y;
}

void Paddle::SetDirection(int directionSet) 
{ 
	//If statement only moves the paddles if the movement won't cause them to go off screen. More efficient than checking if the paddle is off screen and setting it to be back on screen
	if(directionSet == 0 || (directionSet > 0 && position.y > 0) || (directionSet < 0  && position.y < SCREEN_HEIGHT - height))
		direction = directionSet; 
}