factorygame/util/util.c

//
// Created by bruno on 4/24/25.
//

#include <dirent.h>
#include "util.h"
//#include "font.h"

//The window we'll be rendering to
SDL_Window *window = NULL;
volatile bool running = true;

bool debugMode = false;

//The surface contained by the window
SDL_Renderer *mainRenderer = NULL;

SDL_Rect screenRect;

SDL_Texture *createFlippedTexture(SDL_Renderer *renderer, SDL_Texture *src, SDL_RendererFlip flip) {
    int w, h;
    SDL_QueryTexture(src, NULL, NULL, &w, &h);

    SDL_Texture *renderTarget = SDL_GetRenderTarget(renderer);

    SDL_Texture *target = SDL_CreateTexture(renderer, SDL_PIXELFORMAT_RGBA8888, SDL_TEXTUREACCESS_TARGET, w, h);
    SDL_SetRenderTarget(renderer, target);
    SDL_RenderCopyEx(renderer, src, NULL, NULL, 0, NULL, flip);
    SDL_SetRenderTarget(renderer, renderTarget);

    return target;
}

SDL_Texture *createRotatedTexture(SDL_Renderer *renderer, SDL_Texture *src, double angle) {
    int w, h;
    SDL_QueryTexture(src, NULL, NULL, &w, &h);
    SDL_Texture *renderTarget = SDL_GetRenderTarget(renderer);

    SDL_Texture *target = SDL_CreateTexture(renderer, SDL_PIXELFORMAT_RGBA8888, SDL_TEXTUREACCESS_TARGET, w, h);
    SDL_SetRenderTarget(renderer, target);
    SDL_RenderCopyEx(renderer, src, NULL, NULL, angle, NULL, SDL_FLIP_NONE);
    SDL_SetRenderTarget(renderer, renderTarget);

    return target;
}

SDL_Texture *ScaleTexture(SDL_Renderer *renderer, SDL_Texture *src, int newWidth, int newHeight) {
    SDL_Texture *scaledTex = SDL_CreateTexture(renderer,
                                               SDL_PIXELFORMAT_RGBA8888,
                                               SDL_TEXTUREACCESS_TARGET,
                                               newWidth,
                                               newHeight);

    if (!scaledTex) {
        SDL_Log("Failed to create target texture: %s", SDL_GetError());
        return nullptr;
    }

    // Save current render target
    SDL_Texture *oldTarget = SDL_GetRenderTarget(renderer);

    SDL_SetRenderTarget(renderer, scaledTex);
    SDL_SetRenderDrawColor(renderer, 0, 0, 0, 0);
    SDL_RenderClear(renderer);

    SDL_Rect dst = {0, 0, newWidth, newHeight};
    SDL_RenderCopy(renderer, src, NULL, &dst);

    SDL_SetRenderTarget(renderer, oldTarget);  // Restore

    return scaledTex;
}

void DrawThickRect(SDL_Renderer *renderer, SDL_Rect rect, int thickness) {
    for (int i = 0; i < thickness; i++) {
        SDL_Rect r = {rect.x - i, rect.y - i, rect.w + i * 2, rect.h + i * 2};
        SDL_RenderDrawRect(renderer, &r);
    }
}

void renderBar(SDL_Renderer *renderer,
               int x, int y, int width, int height,
               int maxValue, int currentValue,
               SDL_Color barColor, int margin) {
    if (maxValue <= 0) return; // Avoid division by zero

    // Clamp value
    if (currentValue < 0) currentValue = 0;
    if (currentValue == 0) {
        return;
    }
    if (currentValue > maxValue) currentValue = maxValue;

    // Calculate filled width based on currentValue
    int filledWidth = (width * currentValue) / maxValue;

    // Bar rectangle
    SDL_Rect barRect = {x, y, filledWidth, height};

    // Background rectangle with margin
    SDL_Rect bgRect = {
            x - margin,
            y - margin,
            width + margin * 2,
            height + margin * 2
    };

    // Draw background (black)
    SDL_SetRenderDrawColor(renderer, 0, 0, 0, 255);
    SDL_RenderFillRect(renderer, &bgRect);

    // Draw bar with provided color
    SDL_SetRenderDrawColor(renderer, barColor.r, barColor.g, barColor.b, barColor.a);
    SDL_RenderFillRect(renderer, &barRect);

    char barString[20];
    sprintf(barString, "%d/%d", currentValue, maxValue);

    //renderText(mainRenderer, fonts[3], barString, width / 2, margin);
}

int cmpstringp(const void *p1, const void *p2) {
    return strcmp(*(const char **) p1, *(const char **) p2);
}


// Helper function to iterate over sorted entries in a directory
void iterateSortedDir(const char *path, DirEntryCallback callback, SDL_Renderer *renderer) {
    DIR *dir = opendir(path);
    if (!dir) {
        perror("opendir");
        return;
    }

    struct dirent *entry;
    char **names = NULL;
    size_t count = 0;

    // Collect file names
    while ((entry = readdir(dir)) != NULL) {
        if (entry->d_name[0] == '.') continue;
        names = realloc(names, sizeof(char *) * (count + 1));
        if (!names) {
            perror("realloc");
            closedir(dir);
            return;
        }
        names[count++] = strdup(entry->d_name);
    }
    closedir(dir);

    // Sort entries
    qsort(names, count, sizeof(char *), cmpstringp);

    // Call the user-provided function for each file
    if (names != NULL) {
        for (size_t i = 0; i < count; i++) {
            if (names[i] != NULL) {
                callback(names[i], renderer);
                free(names[i]);
            }
        }
        free(names);
    }
}