player.cpp

#include "Player.h"
#include "Engine.h"

Player::Player(SDL_Renderer* renderer)
{
		blaster = new Weapon(renderer);
		playerTexture.LoadFromFile(renderer, "resources/player_ship_retina.png");
		width = playerTexture.GetWidth();
		height = playerTexture.GetHeight();
		SpriteAngle = 0.0;

		position.X = (Engine::GetScreenWidth() / 2) - (width / 2);
		position.Y = (Engine::GetScreenHeight() /2) - (height / 2);
		moveSpeed = 5;

		SDLTexture = playerTexture.GetTexture();
		lastShotTime = 0;
}

Player::~Player()
{
	
}

//handles key presses and mouse clicks 
void Player::HandleInput(Input* input)
{
	if (input->KeyPressed(MOVE_UP))
	{
		movePlayer(Y, -moveSpeed);
	}
	if (input->KeyPressed(MOVE_DOWN))
	{
		movePlayer(Y, moveSpeed);
	}
	if (input->KeyPressed(MOVE_LEFT))
	{
		movePlayer(X, -moveSpeed);
	}
	if (input->KeyPressed(MOVE_RIGHT))
	{
		movePlayer(X, moveSpeed);
	}
	if (input->KeyPressed(SHOOT))
	{
		currentTime = SDL_GetTicks();
		
		if ((currentTime - lastShotTime) > shotInterval)
		{
			shoot();
			lastShotTime = SDL_GetTicks();
		}
	}
	
	//Calculate the angle to the mouse cursor and set the player rotation accordingly
	mousePosition = input->GetMousePosition();
	playerCenter = { position.X + width / 2, position.Y + height / 2};
	Vector2 delta = { mousePosition->X - playerCenter.X, mousePosition->Y - playerCenter.Y};

	angle = atan2(delta.Y, delta.X) * 180 / M_PI;
	angle += 90.0; //Add 90 to rotate the texture correctly

}

void Player::movePlayer(Axis axis, int moveAmount) 
{
	if (axis == X) {
		position.X += moveAmount;
	}
	else {
		position.Y += moveAmount;
	}
	if ((position.X + (width*0.5))> Engine::GetScreenWidth())
	{
		position.X = 0 - (width*0.5);
	}
	else if ((position.X + (width*0.5)) < 0)
	{
		position.X = Engine::GetScreenWidth() - (width*0.5);
	}
	else if ((position.Y + (height*0.5)) > Engine::GetScreenHeight())
	{
		position.Y = 0 - (height*0.5);
	}
	else if ((position.Y + (height*0.5)) < 0)
	{
		position.Y = Engine::GetScreenHeight() - (height*0.5);
	}
}

int Player::getMoveSpeed() 
{
	return moveSpeed;
}

Vector2 Player::GetPosition() const 
{
	return position;
}

SDL_Texture *Player::GetPlayerTexture() 
{
	return SDLTexture;
}

void Player::Render(SDL_Renderer *renderer) 
{
	blaster->Render(renderer);
	SDL_Rect renderQuad = { position.X, position.Y, width, height };
	SDL_RenderCopyEx(renderer, SDLTexture, NULL, &renderQuad, angle, NULL, SDL_FLIP_NONE);
}

void Player::shoot()
{	

	Vector2 directionVector = { mousePosition->X - playerCenter.X, mousePosition->Y - playerCenter.Y};
	Vector2 normalizedDirection = directionVector.Normalize();
	Vector2 direction = { normalizedDirection.X * width / 2 , normalizedDirection.Y * width / 2 };
	Vector2 bulletPos = { playerCenter.X + direction.X, playerCenter.Y + direction.Y };
	blaster->Shoot(bulletPos, direction, angle);
}

void Player::Update()
{
	blaster->Update();
}