path: root/src/mansdl-checkEvent.cc

/* Include libraries */
#include <SDL2/SDL.h>

/* Include header files */
#include "fractData.hh"
#include "mansdl.hh"

void mansdl::checkEvent(fractData* fd, SDL_Event* event) {
	const Uint8* keyState = SDL_GetKeyboardState(NULL);
	bool         ctrl     = keyState[SDL_SCANCODE_LCTRL] || keyState[SDL_SCANCODE_RCTRL];

	switch(event->type) {
		case SDL_QUIT:
			quit = true;
			break;

		case SDL_MOUSEWHEEL:
			if(event->wheel.y > 0) {
				switch(ctrl) {
					case true: {
						unsigned int result = fd->maxIter * 2;

						if(result > 2) {
							fd->maxIter = result;

							doGenerate = true;
						}

						break;
					}

					case false:
						fd->zoom = fd->zoom * 1.25;
						doGenerate = true;
						break;
				}
			} else if(event->wheel.y < 0) {
				switch(ctrl) {
					case true: {
						unsigned int result = fd->maxIter / 2;

						if(result >= 2) {
							fd->maxIter = result;
							doGenerate = true;
						}

						break;
					}

					case false:
						fd->zoom = fd->zoom / 1.25;
						doGenerate = true;
						break;
				}
			}

			break;

		case SDL_KEYDOWN:
			switch(ctrl) {
				case true:
					if(keyState[SDL_SCANCODE_X])
						quit = true;

					if(fd->fract == julia) {
						if(keyState[SDL_SCANCODE_W]) {
							fd->julia_imag = fd->julia_imag - 0.005;
							doGenerate = true;
						} if(keyState[SDL_SCANCODE_S]) {
							fd->julia_imag = fd->julia_imag + 0.005;
							doGenerate = true;
						} if(keyState[SDL_SCANCODE_A]) {
							fd->julia_real = fd->julia_real - 0.005;
							doGenerate = true;
						} if(keyState[SDL_SCANCODE_D]) {
							fd->julia_real = fd->julia_real + 0.005;
							doGenerate = true;
						}
					}

					break;

				case false:
					if(keyState[SDL_SCANCODE_A]) {
						fd->real = fd->real - 0.1 / fd->zoom;
						doGenerate = true;
					} if(keyState[SDL_SCANCODE_D]) {
						fd->real = fd->real + 0.1 / fd->zoom;
						doGenerate = true;
					} if(keyState[SDL_SCANCODE_W]) {
						fd->imag = fd->imag - 0.1 / fd->zoom;
						doGenerate = true;
					} if(keyState[SDL_SCANCODE_S]) {
						fd->imag = fd->imag + 0.1 / fd->zoom;
						doGenerate = true;
					}

					break;
			}

			break;
	}
}