I'm making a little game as a small project but I can't get an if statement to do anything. If I make it !statement it works though. I run this if statement to find which cube on the "grid" (An array or cubes I render in a for loop I didn't show) the mouse clicked on. I use C++ and SDL2 on a Mac. This is my code:
#include <iostream>
#include <SDL2/SDL.h>
void RenderRects(SDL_Renderer *renderer);
void ToggleRect(int MouseX, int MouseY);
struct Grid
{
bool IsActive;
SDL_Rect Rect;
};
Grid grid[228960];
int main()
{
bool IsRunning = true;
bool IsRunningSim;
SDL_Init(SDL_INIT_EVERYTHING);
SDL_Window *window = SDL_CreateWindow("My Game", SDL_WINDOWPOS_CENTERED, SDL_WINDOWPOS_CENTERED, 1000, 780, SDL_WINDOW_SHOWN | SDL_WINDOW_RESIZABLE);
SDL_Renderer *renderer = SDL_CreateRenderer(window, -1, SDL_RENDERER_ACCELERATED);
int h, w;
SDL_MaximizeWindow(window);
SDL_GetRendererOutputSize(renderer, &w, &h);
while (IsRunning)
{
// std::cout << w << std::endl;
// std::cout << h << std::endl;
SDL_Event ev;
while (SDL_PollEvent(&ev))
{
if (ev.type == SDL_QUIT)
{
IsRunning = false;
}
if (ev.type == SDL_MOUSEBUTTONDOWN)
{
int x, y;
SDL_GetMouseState(&x, &y);
ToggleRect(x, y);
}
}
SDL_SetRenderDrawColor(renderer, 0, 0, 0, 255);
SDL_RenderClear(renderer);
//rendering
RenderRects(renderer);
SDL_RenderPresent(renderer);
}
SDL_DestroyRenderer(renderer);
SDL_DestroyWindow(window);
SDL_Quit();
return 0;
}
void RenderRects(SDL_Renderer *renderer)
{
for (int i = 0; i < 1440; i += 10)
{
for (int j = 0; j < 795; j += 10)
{
SDL_Rect Rect = {i, j, 10, 10};
grid[i].Rect = Rect;
SDL_SetRenderDrawColor(renderer, 100, 100, 100, 225);
SDL_RenderDrawRect(renderer, &grid[i].Rect);
}
}
}
void ToggleRect(int MouseX, int MouseY)
{
SDL_Point MousePos;
MousePos.x = MouseX;
MousePos.y = MouseY;
for (int i = 0; i < 228961; i++)
{
if (SDL_PointInRect(&MousePos, &grid[i].Rect)) //This is the if that doesn't work.
{
std::cout << i << std::endl;
}
}
}
I have fixed this. I had to change my method of drawing since it was drawing over the rect and then showing after I changed its color. There was also an issue with generating the Rects that was probably effect it.