Primer commit

ltexture.cpp

@@ -0,0 +1,141 @@
+#include <SDL2/SDL.h>
+#include <SDL2/SDL_image.h>
+#include <stdio.h>
+#include <string>
+#include "const.h"
+#include "globals.h"
+#include "ltexture.h"
+
+LTexture::LTexture()
+{
+	//Initialize
+	mTexture = NULL;
+	mWidth = 0;
+	mHeight = 0;
+}
+
+LTexture::~LTexture()
+{
+	//Deallocate
+	free();
+}
+
+bool LTexture::loadFromFile(std::string path)
+{
+	//Get rid of preexisting texture
+	free();
+
+	//The final texture
+	SDL_Texture *newTexture = NULL;
+
+	//Load image at specified path
+	SDL_Surface *loadedSurface = IMG_Load(path.c_str());
+	if (loadedSurface == NULL)
+	{
+		printf("Unable to load image %s! SDL_image Error: %s\n", path.c_str(), IMG_GetError());
+	}
+	else
+	{
+		//Color key image
+		SDL_SetColorKey(loadedSurface, SDL_TRUE, SDL_MapRGB(loadedSurface->format, COLOR_KEY_R, COLOR_KEY_G, COLOR_KEY_B));
+
+		//Create texture from surface pixels
+		newTexture = SDL_CreateTextureFromSurface(gRenderer, loadedSurface);
+		if (newTexture == NULL)
+		{
+			printf("Unable to create texture from %s! SDL Error: %s\n", path.c_str(), SDL_GetError());
+		}
+		else
+		{
+			//Get image dimensions
+			mWidth = loadedSurface->w;
+			mHeight = loadedSurface->h;
+		}
+
+		//Get rid of old loaded surface
+		SDL_FreeSurface(loadedSurface);
+	}
+
+	//Return success
+	mTexture = newTexture;
+	return mTexture != NULL;
+}
+
+bool LTexture::createBlank( int width, int height, SDL_TextureAccess access )
+{
+    //Create uninitialized texture
+    mTexture = SDL_CreateTexture( gRenderer, SDL_PIXELFORMAT_RGBA8888, access, width, height );
+    if( mTexture == NULL )
+    {
+        printf( "Unable to create blank texture! SDL Error: %s\n", SDL_GetError() );
+    }
+    else
+    {
+        mWidth = width;
+        mHeight = height;
+    }
+
+    return mTexture != NULL;
+}
+
+void LTexture::free()
+{
+	//Free texture if it exists
+	if (mTexture != NULL)
+	{
+		SDL_DestroyTexture(mTexture);
+		mTexture = NULL;
+		mWidth = 0;
+		mHeight = 0;
+	}
+}
+
+void LTexture::setColor(Uint8 red, Uint8 green, Uint8 blue)
+{
+	//Modulate texture rgb
+	SDL_SetTextureColorMod(mTexture, red, green, blue);
+}
+
+void LTexture::setBlendMode(SDL_BlendMode blending)
+{
+	//Set blending function
+	SDL_SetTextureBlendMode(mTexture, blending);
+}
+
+void LTexture::setAlpha(Uint8 alpha)
+{
+	//Modulate texture alpha
+	SDL_SetTextureAlphaMod(mTexture, alpha);
+}
+
+void LTexture::render(int x, int y, SDL_Rect *clip, double angle, SDL_Point *center, SDL_RendererFlip flip)
+{
+	//Set rendering space and render to screen
+	SDL_Rect renderQuad = {x, y, mWidth, mHeight};
+
+	//Set clip rendering dimensions
+	if (clip != NULL)
+	{
+		renderQuad.w = clip->w;
+		renderQuad.h = clip->h;
+	}
+
+	//Render to screen
+	SDL_RenderCopyEx(gRenderer, mTexture, clip, &renderQuad, angle, center, flip);
+}
+
+void LTexture::setAsRenderTarget()
+{
+    //Make self render target
+    SDL_SetRenderTarget( gRenderer, mTexture );
+}
+
+int LTexture::getWidth()
+{
+	return mWidth;
+}
+
+int LTexture::getHeight()
+{
+	return mHeight;
+}