breakout/highscores.c

#include <stdio.h>
#include <stdlib.h>
#include <stdbool.h>
#include <string.h>
#include <SDL2/SDL.h>
#include <SDL2/SDL_image.h>
#include <SDL2/SDL_ttf.h>

#include "highscores.h"

int entriesGot = 0;
User * ul;
SDL_Color White;
SDL_Texture * Message;
SDL_Surface * surfaceMessage;
SDL_Rect Message_rect;
TTF_Font * font = NULL;

void HIGHSCORES_Initialize(){
    printf("Initializing Highscores...\n");
    White = (SDL_Color) {255, 255, 255 };
    ul = malloc(10 * sizeof(User));
    font = TTF_OpenFont("assets/fonts/monofur.ttf", 48);
    if (!font) printf("Font could not initialize! Error: %s\n", TTF_GetError());
    else printf("Font was successfully initialized!\n");
    printFontStyle(font);
    HIGHSCORES_ReloadList(&entriesGot);
    printf("Highscores initialized!\n");
}

void printFontStyle(TTF_Font * ffont){
    int style;

    style = TTF_GetFontStyle(ffont);
    printf("The font style is:");
    if (style == TTF_STYLE_NORMAL)
        printf(" normal");
    else {
        if (style & TTF_STYLE_BOLD)
            printf(" bold");
        if (style & TTF_STYLE_ITALIC)
            printf(" italic");
        if (style & TTF_STYLE_UNDERLINE)
            printf(" underline");
        if (style & TTF_STYLE_STRIKETHROUGH)
            printf(" strikethrough");
    }
    printf("\n");
}

void HIGHSCORES_Draw(SDL_Renderer * renderer){
    char * buffer = calloc(100, sizeof(char));
    int count = 0;
    char format[20] = "| %-50s | %-10s |";

    sprintf(buffer, format, "Username", "Score");
    HIGHSCORES_GenerateTexture(renderer, buffer);
    Message_rect.y = 70;
    Message_rect.x = 50;
    SDL_RenderCopy(renderer, Message, NULL, &Message_rect);
    while (count < entriesGot) {
        sprintf(buffer, format, ul[count].Username, ul[count].Score);
        HIGHSCORES_GenerateTexture(renderer, buffer);
        Message_rect.y = ((Message_rect.h + 10) * (count + 1)) + 140;
        Message_rect.x = 50;
        SDL_RenderCopy(renderer, Message, NULL, &Message_rect);
        count++;
    }
}

void HIGHSCORES_Deinitialize(){
    printf("De-initializing Highscores...\n");
    TTF_CloseFont(font);
    font = NULL; // to be safe...
    SDL_FreeSurface(surfaceMessage);
    SDL_DestroyTexture(Message);
    free(ul);
    printf("Highscores de-initialized!\n");
}

void HIGHSCORES_GenerateTexture(SDL_Renderer * renderer, char * text){
    int w, h;

    TTF_SizeText(font, text, &w, &h);
    surfaceMessage = TTF_RenderText_Solid(font, text, White); // as TTF_RenderText_Solid could only be used on SDL_Surface then you have to create the surface first
    Message = SDL_CreateTextureFromSurface(renderer, surfaceMessage); // now you can convert it into a texture
    Message_rect = (SDL_Rect) {.x = 0, .y = 0, .w = w, .h = h }; // create a rect
}

void HIGHSCORES_ReloadList(int * usercount){
    printf("Call BHI interface:\n");
    system("bhi top output.txt");
    printf("BHI interface quit!\nBHI output handling...\n");

    *usercount = 0;
    FILE * fp;
    char * line = NULL;
    size_t len = 0;
    ssize_t read;
    char * name, * scorestring;
    int nameCharCount = 0, scoreCharCount = 0;
    bool switchread = false;
    ul = malloc(10 * sizeof(User));
    fp = fopen("output.txt", "r");
    if (fp == NULL)
        return;
    if ((read = getline(&line, &len, fp)) != -1)
        if (line[0] == 0)
            return;
    int counter = 0;
    while ((read = getline(&line, &len, fp)) != -1) {
        name = malloc(read * sizeof(char));
        scorestring = malloc(read * sizeof(char));
        nameCharCount = 0;
        scoreCharCount = 0;
        switchread = false;
        #ifdef DEBUG
        printf("Retrieved line of length %u:\n", read);
        printf("%s", line);
        #endif
        for (ssize_t i = 0; i < read; i++) {
            if (line[i] == '+') {
                switchread = true;
                continue;
            }
            if (switchread) {
                if (line[i] == '\n') break;
                scorestring[scoreCharCount++] = line[i];
            } else
                name[nameCharCount++] = line[i];
        }
        name[nameCharCount] = '\0';
        scorestring[scoreCharCount] = '\0';
        User tmp;
        strcpy(tmp.Username, name);
        strcpy(tmp.Score, scorestring);
        ul[counter++] = tmp;
    }
    free(name);
    free(scorestring);

    fclose(fp);
    if (line)
        free(line);
    for (size_t i = 0; i < counter; i++) {
        printf("User: %s -> Score: %s\n", ul[i].Username, ul[i].Score);
    }

    *usercount = counter;
    printf("BHI Interface successfully quit!\n");
} /* main */