FirstTest

#define SDL_MAIN_HANDLED
#include <SDL.h>
#include <iostream>
using namespace std;

//the structs patrutz gave us i blame him
struct piesa{
    int tip, ori, x, y, h, l;
}p[100];
struct conexiune{
    int p1, p2, pin1, pin2, tip;
}c[100];
int k=1,l,h,x,y,t,k2=1;
//colors we will use, to be updated later with prettier ones
SDL_Color col[10]={
    {255,0,0,255},
    {0,255,0,255},
    {0,0,255,255}
};

void menu(SDL_Renderer* renderer){
    //3 buttons for now each changing the piece we'll use
    if(x<=100){
        if(y<=100){
            l=100,h=50; t=0;
            //changes color to the first one
            SDL_SetRenderDrawColor(renderer,col[0].r,col[0].g,col[0].b,col[0].a);
        }
        else if(y<=200){
            l=50,h=50; t=1;
            SDL_SetRenderDrawColor(renderer,col[1].r,col[1].g,col[1].b,col[1].a);
        }
        else if(y<=300){
            l=150,h=100; t=2;
            SDL_SetRenderDrawColor(renderer,col[2].r,col[2].g,col[2].b,col[2].a);
        }
    }
}

void drawMenu(SDL_Renderer* renderer){
    //draws the menu with 3 filled squares
    SDL_Rect button={0,0,100,100};
    SDL_SetRenderDrawColor(renderer,col[0].r,col[0].g,col[0].b,col[0].a);
    SDL_RenderFillRect(renderer,&button);

    button={0,100,100,100};
    SDL_SetRenderDrawColor(renderer,col[1].r,col[1].g,col[1].b,col[1].a);
    SDL_RenderFillRect(renderer,&button);

    button={0,200,100,100};
    SDL_SetRenderDrawColor(renderer,col[2].r,col[2].g,col[2].b,col[2].a);
    SDL_RenderFillRect(renderer,&button);
}

void drawPiece(SDL_Renderer* renderer){

    //dreptunghi centrat in x y
    SDL_Rect rect={x-l/2,y-h/2,l,h};
    p[k].x=x, p[k].y=y;
    p[k].l=l, p[k].h=h, p[k].tip=t, p[k++].ori=0;

    //draws and updates screen
    SDL_RenderDrawRect(renderer,&rect);
    SDL_RenderPresent(renderer);
}

int inPiece(){
    //return which piece was clicked, 0 if no piece
    for(int i=0;i<k;i++){
        if(x>p[i].x-p[i].l/2&&x<p[i].x+p[i].l/2&&
           y>p[i].y-p[i].h/2&&y<p[i].y+p[i].h/2)
            return i;
    }
    return 0;
}
void connect(SDL_Renderer* renderer){
    //very basic connection selects first and second piece
    c[k2].p1=c[k2].p2;
    c[k2].p2=inPiece();
    //if last 2 selections were pieces
    if(c[k2].p1&&c[k2].p2){
        //white line between 2 pieces, moves to next connection
        SDL_SetRenderDrawColor(renderer, 255, 255, 255, 255);
        SDL_RenderDrawLine(renderer, p[c[k2].p1].x, p[c[k2].p1].y,  p[c[k2].p2].x,  p[c[k2].p2].y);
        k2++;
    }
    SDL_RenderPresent(renderer);
}

void drawLine(SDL_Renderer* renderer){
    //no use for testing only
    SDL_SetRenderDrawColor(renderer, 255, 0, 0, 255);
    SDL_RenderDrawLine(renderer, 100, 100, 700, 500);
    SDL_RenderPresent(renderer);
}

int main() {
    //create window
    SDL_Init(SDL_INIT_VIDEO);
    SDL_Window* window = SDL_CreateWindow("Fereastra SDL2",SDL_WINDOWPOS_CENTERED, SDL_WINDOWPOS_CENTERED, 800, 600, 0);

    //create renderer NOT the same thing as window
    SDL_Renderer* renderer = SDL_CreateRenderer(window, -1, SDL_RENDERER_ACCELERATED);
    SDL_Event event;

    //set bg color (r g b values)
    SDL_SetRenderDrawColor(renderer, 30, 20, 80, 255);
    SDL_RenderClear(renderer);
    drawMenu(renderer);
    SDL_RenderPresent(renderer);

    //start main loop
    int running = 1;
    while (running) {
        //here add events= things that happen
        while (SDL_PollEvent(&event)) {
            //when click
            if(event.type==SDL_MOUSEBUTTONDOWN){
                //takes mouse position in x y
                SDL_GetMouseState(&x,&y);

                cout<<inPiece(); //de verificare
                connect(renderer); //wont do anything if we dont connect
                if(x<=100&&y<=300)menu(renderer); //checks if menu was pressed
                else if(!inPiece())drawPiece(renderer); //draws if nothing else
            }
            //when key press
            if(event.type==SDL_KEYDOWN)
                drawLine(renderer);
            //when close window = ends main while
            if (event.type == SDL_QUIT) {
                running = 0;
            }
        }
        //resets color after connection turns it white
        SDL_SetRenderDrawColor(renderer,col[t].r,col[t].g,col[t].b,col[t].a);
        //updates screen on every frame = for now NOT necessary but who knows
        //SDL_RenderPresent(renderer);
    }
    return 0;
}