snakecpp/teleports.cpp at master · Majcin9/snakecpp · GitHub

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#include "teleports.h"

Teleports::Teleports(Snake snake){
	init(snake);
}
void Teleports::init(Snake snake){
	portal_bmp = SDL_LoadBMP("./bitmaps/portal.bmp");
	for (int i = 0;i<N_OF_TELEPORTS;i++){
		teleports[i].num = i;
		position_teleport(snake,i,1);
		position_teleport(snake,i,2);
	}
}
void Teleports::position_teleport(Snake snake,int num,int which){
	int x,y,pos_ok = 1;
	int tries = 0;
	int positions_x = SCREEN_WIDTH/24;
	int positions_y = SCREEN_HEIGHT/24;
	do{
		tries++;
		pos_ok = 1;
		x = rand()%(positions_x-1);
		y = rand()%(positions_y-2)+1;
		x = x*24 + 12;
		y = y*24 + 36;
		for (int i = 0;i<num;i++){
			if ((teleports[i].one.x == x && teleports[i].one.y == y) ||
			    (teleports[i].two.x == x && teleports[i].two.y == y)){
				pos_ok = 0;
			}
		}
		if (which == 2 && (teleports[num].one.x == x && teleports[num].one.y == y)){
			pos_ok = 0;
		}
		for (int i = 0;i<snake.length;i++){
			if (snake.snake_parts[i].x == x && snake.snake_parts[i].y == y) {
				pos_ok = 0;
			}
		}
	}while(!pos_ok && tries <1000);

	if (pos_ok){
		if (which == 1){
			teleports[num].one = {x,y};
		}
		else if (which == 2){
			teleports[num].two = {x,y};
		}
	}
}
void Teleports::set_window_size(int width,int height){
	screen_width = width;
	screen_height = height;
}
void Teleports::DrawTeleports(Renderer renderer){
	char number_str[10] = "";
	int w,h;
	SDL_Rect dest;
	w = portal_bmp->w;
	h = portal_bmp->h;
	dest.w = w;
	dest.h = h;
	for (int i = 0;i<N_OF_TELEPORTS;i++){
		sprintf(number_str, "%d",teleports[i].num);
		dest.x = teleports[i].one.x - w / 2;
		dest.y = teleports[i].one.y - h / 2;
		SDL_BlitSurface(portal_bmp, NULL, renderer.screen, &dest);
		renderer.DrawString(teleports[i].one.x, teleports[i].one.y, number_str);
		sprintf(number_str, "%d",teleports[i].num);
		dest.x = teleports[i].two.x - w / 2;
		dest.y = teleports[i].two.y - h / 2;
		SDL_BlitSurface(portal_bmp, NULL, renderer.screen, &dest);
		renderer.DrawString(teleports[i].two.x, teleports[i].two.y, number_str);
	}

}
void Teleports::teleport_snake(Snake* snake){
	for (int i = 0;i<N_OF_TELEPORTS;i++){
		if (snake->snake_parts[0].x == teleports[i].one.x && snake->snake_parts[0].y == teleports[i].one.y){
			snake->posx = teleports[i].two.x;
			snake->posy = teleports[i].two.y;
		}
		else if (snake->snake_parts[0].x == teleports[i].two.x && snake->snake_parts[0].y == teleports[i].two.y){
			snake->posx = teleports[i].one.x;
			snake->posy = teleports[i].one.y;
		}
	}

}
void Teleports::save(FILE* fptr){
	for (int i = 0;i<N_OF_TELEPORTS;i++){
		fprintf(fptr,"%d,%d,%d,%d ",teleports[i].one.x,teleports[i].one.y,
					    teleports[i].two.x,teleports[i].two.y);
	}
}
int Teleports::load(FILE* fptr){
	for (int i = 0;i<N_OF_TELEPORTS;i++){
		if (!fscanf(fptr,"%d,%d,%d,%d ",&teleports[i].one.x,&teleports[i].one.y,
					    &teleports[i].two.x,&teleports[i].two.y)){
			return 0;
		}
	}
	return 1;
}