sle/src/tile_picker/main.c

/* SPDX-License-Identifier: GPL-3.0-or-later */
/* Copyright (C) 2021 KikooDX */

#include "mouse.h"
#include "options.h"
#include "shared_data.h"
#include "tile_picker/draw.h"
#include <raylib.h>
#include <stdbool.h>
#include <stdio.h>
#include <stdlib.h>

static void init_mouse(struct Options options);
static void update_mouse(int *mouse_x, int *mouse_y,
                         struct Options options,
                         struct SharedData *shared_data);

int tile_picker_main(struct Options options,
                     struct SharedData *shared_data)
{
	int mouse_x;
	int mouse_y;
	Texture2D tileset;

	/* initialize raylib */
	InitWindow(options.picker_window_width,
	           options.picker_window_height,
	           "SLE secondary window");
	SetTargetFPS(options.picker_target_fps);
	init_mouse(options);
	/* load textures */
	tileset = LoadTexture(options.tileset_path);

	/* only proceed if tileset is well loaded */
	if (tileset.width > 0) {
		while (!shared_data->end_child) {
			/* update */
			update_mouse(&mouse_x, &mouse_y, options,
			             shared_data);

			/* draw */
			BeginDrawing();

			ClearBackground(BLACK);
			tileset_draw(tileset, options,
			             shared_data->selected_tile);

			EndDrawing();
		}
	}

	/* unload textures */
	UnloadTexture(tileset);

	CloseWindow();

	return EXIT_SUCCESS;
}

static void init_mouse(struct Options options)
{
	SetMouseOffset(-options.picker_padding,
	               -options.picker_padding);
	SetMouseScale(
	    1.0 / (options.tile_width + options.picker_padding),
	    1.0 / (options.tile_height + options.picker_padding));
}

static void update_mouse(int *mouse_x, int *mouse_y,
                         struct Options options,
                         struct SharedData *shared_data)
{
	const bool left_click = IsMouseButtonDown(0);
	const bool right_click = IsMouseButtonDown(1);

	update_mouse_position(
	    mouse_x, mouse_y,
	    options.tileset_width *
		(options.tileset_width + options.picker_padding),
	    options.tileset_height *
		(options.tileset_height + options.picker_padding));

	/* set left button tile */
	if (left_click)
		shared_data->selected_tile =
		    *mouse_x + *mouse_y * options.tileset_width;
}