breakout/settings.c

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

#include "settings.h"

#define Slider_min 410
#define Slider_max 790
#define Slider_height 120
#define Scalar_width 20
#define Scalar_height Slider_height
#define Bar_width 400
#define Bar_height Slider_height

SDL_Texture* Setting_Texture;

SDL_Rect Settings_rect;
Slider BV;
Slider BS;
Slider BT;

bool Settings_IsInit=false;

void Settings_Initialize (SDL_Renderer* renderer) {
  Initialize_Slider(400,300,Scalar_width,Bar_width,Scalar_height,&BV);
  Initialize_Slider(450,520,40,600,60,&BS);
  Initialize_Slider(400,700,Scalar_width,Bar_width,Scalar_height,&BT);
  Setting_Texture = IMG_LoadTexture(renderer, "assets/images/settings_title.png");
  Settings_rect = (SDL_Rect){.x = 800, .y = 180, .w=313, .h=100};
  Settings_IsInit = true;
}

void Settings_Draw (SDL_Renderer* renderer) {
  SDL_RenderCopy(renderer, Setting_Texture, NULL, &Settings_rect);
  Draw_Slider(renderer,&BV);
  Draw_Slider(renderer,&BS);
  Draw_Slider(renderer,&BT);
}

void Settings_Deinitialize(){
  if(Settings_IsInit){
    SDL_DestroyTexture(Setting_Texture);
    Settings_IsInit=false;
  }
}

void Draw_Slider(SDL_Renderer* renderer,Slider* beta){
  SDL_SetRenderDrawColor(renderer,255,255,255,255);
  SDL_RenderDrawRect(renderer,&beta->Bar_rect);
  int x,y;
  Uint32 Mousestate=SDL_GetMouseState(&x,&y);
  if(y<=((beta->Scalar_rect.y)+(beta->h))&&y>=(beta->Scalar_rect.y)&&x<=(beta->bw+beta->x)&&x>=(beta->x)&&(Mousestate & SDL_BUTTON(SDL_BUTTON_LEFT))){
    SDL_RenderFillRect(renderer,&beta->Scalar_rect);
    SDL_RenderDrawRect(renderer,&beta->Scalar_rect);
    if(x>(beta->x+beta->bw-(beta->sw)/2)){
      beta->Scalar_rect.x=(beta->x+beta->bw-(beta->sw)/2)-(beta->Scalar_rect.w)/2;
      beta->Slider_value=(beta->x+beta->bw-(beta->sw)/2);
    }
    else if(x<beta->x+(beta->sw)/2){
      beta->Scalar_rect.x=beta->x;
      beta->Slider_value=beta->x+(beta->sw)/2;
    }
    else{
      beta->Scalar_rect.x=x-(beta->Scalar_rect.w/2);
      beta->Slider_value=x;
    }
  }
  else{
    SDL_RenderDrawRect(renderer,&beta->Scalar_rect);
    printf("%f",beta->Slider_value);
  }
}

void mapping(int *px,int *py,Slider* beta){

}

void Initialize_Slider(int x,int y,int sw,int bw,int h,Slider* beta){
  beta->Scalar_rect = (SDL_Rect){.x=x,.y=y,.w=sw,.h=h};
  beta->Bar_rect =  (SDL_Rect){.x=x,.y=y,.w=bw,.h=h};
  beta->x=x;
  beta->y=y;
  beta->sw=sw;
  beta->bw=bw;
  beta->h=h;
}