SDL2-Galaga/AnimatedTexture.cpp at master · OneMeanDragon/SDL2-Galaga · GitHub

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//-----------------------------------------------------------------//
// AnimatedTexture.cpp                                             //
// Extends the Texture class' functionality to handle animations   //
// Uses the Texture class' spritesheet constructor                 //
//                                                                 //
// By: Ather Omar                                                  //
//-----------------------------------------------------------------//
#include "AnimatedTexture.h"
//---------------------------------------------------------------
// QuickSDL
//---------------------------------------------------------------
namespace QuickSDL {

	AnimatedTexture::AnimatedTexture(std::string filename, int x, int y, int w, int h, int frameCount, float animationSpeed, ANIM_DIR animationDir)
		: Texture(filename, x, y, w, h) {

		mTimer = Timer::Instance();

		mStartX = x;
		mStartY = y;

		mFrameCount = frameCount;
		mAnimationSpeed = animationSpeed;
		mTimePerFrame = mAnimationSpeed / mFrameCount;
		mAnimationTimer = 0.0f;

		mAnimationDirection = animationDir;

		mAnimationDone = false;

		mWrapMode = loop;
	}

	AnimatedTexture::~AnimatedTexture() {

	}

	void AnimatedTexture::WrapMode(WRAP_MODE mode) {

		mWrapMode = mode;
	}

	void AnimatedTexture::ResetAnimation()
	{
		mAnimationTimer = 0.0f;
		mAnimationDone = false;
	}

	bool AnimatedTexture::IsAnimating()
	{
		return !mAnimationDone;
	}

	void AnimatedTexture::Update() {

		if(!mAnimationDone) {

			mAnimationTimer += mTimer->DeltaTime();

			if(mAnimationTimer >= mAnimationSpeed) {

				//Only loop if the wrap mode is loop
				if(mWrapMode == loop) {

					mAnimationTimer -= mAnimationSpeed;

				} else {

					mAnimationDone = true;
					mAnimationTimer = mAnimationSpeed - mTimePerFrame;
				}
			}

			if(mAnimationDirection == horizontal) {

				mClipRect.x = mStartX + (int)(mAnimationTimer / mTimePerFrame) * mWidth;

			} else {

				mClipRect.y = mStartY + (int)(mAnimationTimer / mTimePerFrame) * mHeight;
			}
		}
	}
}