mirror of
https://github.com/JoeyDeVries/LearnOpenGL.git
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54 lines
1.9 KiB
C++
54 lines
1.9 KiB
C++
/******************************************************************
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** This code is part of Breakout.
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**
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** Breakout is free software: you can redistribute it and/or modify
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** it under the terms of the CC BY 4.0 license as published by
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** Creative Commons, either version 4 of the License, or (at your
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** option) any later version.
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******************************************************************/
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#include "ball_object.h"
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BallObject::BallObject()
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: GameObject(), Radius(12.5f), Stuck(true), Sticky(false), PassThrough(false) { }
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BallObject::BallObject(glm::vec2 pos, float radius, glm::vec2 velocity, Texture2D sprite)
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: GameObject(pos, glm::vec2(radius * 2.0f, radius * 2.0f), sprite, glm::vec3(1.0f), velocity), Radius(radius), Stuck(true), Sticky(false), PassThrough(false) { }
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glm::vec2 BallObject::Move(float dt, unsigned int window_width)
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{
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// if not stuck to player board
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if (!this->Stuck)
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{
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// move the ball
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this->Position += this->Velocity * dt;
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// then check if outside window bounds and if so, reverse velocity and restore at correct position
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if (this->Position.x <= 0.0f)
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{
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this->Velocity.x = -this->Velocity.x;
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this->Position.x = 0.0f;
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}
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else if (this->Position.x + this->Size.x >= window_width)
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{
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this->Velocity.x = -this->Velocity.x;
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this->Position.x = window_width - this->Size.x;
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}
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if (this->Position.y <= 0.0f)
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{
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this->Velocity.y = -this->Velocity.y;
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this->Position.y = 0.0f;
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}
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}
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return this->Position;
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}
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// resets the ball to initial Stuck Position (if ball is outside window bounds)
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void BallObject::Reset(glm::vec2 position, glm::vec2 velocity)
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{
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this->Position = position;
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this->Velocity = velocity;
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this->Stuck = true;
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this->Sticky = false;
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this->PassThrough = false;
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} |