mirror of
https://github.com/sehugg/8bitworkshop.git
synced 2024-11-27 01:51:35 +00:00
104 lines
3.5 KiB
C
104 lines
3.5 KiB
C
//-----------------------------LICENSE NOTICE------------------------------------
|
|
// This file is part of CPCtelera: An Amstrad CPC Game Engine
|
|
// Copyright (C) 2016 ronaldo / Fremos / Cheesetea / ByteRealms (@FranGallegoBR)
|
|
//
|
|
// This program is free software: you can redistribute it and/or modify
|
|
// it under the terms of the GNU Lesser General Public License as published by
|
|
// the Free Software Foundation, either version 3 of the License, or
|
|
// (at your option) any later version.
|
|
//
|
|
// This program is distributed in the hope that it will be useful,
|
|
// but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
// GNU Lesser General Public License for more details.
|
|
//
|
|
// You should have received a copy of the GNU Lesser General Public License
|
|
// along with this program. If not, see <http://www.gnu.org/licenses/>.
|
|
//------------------------------------------------------------------------------
|
|
|
|
#include "cpctelera.h"
|
|
#include <stdio.h>
|
|
|
|
// Total random numbers to show (up to 255)
|
|
#define N_RND_NUMBERS 50
|
|
|
|
//////////////////////////////////////////////////////////////////
|
|
// wait4UserKeypress
|
|
// Waits till the user presses a key, counting the number of
|
|
// loop iterations passed.
|
|
//
|
|
// Returns:
|
|
// <u32> Number of iterations passed
|
|
//
|
|
u32 wait4UserKeypress() {
|
|
u32 c = 0; // Count the number of cycles passed till user k
|
|
|
|
// Wait 'till the user presses a key, counting loop iterations
|
|
do {
|
|
c++; // One more cycle
|
|
cpct_scanKeyboard_f(); // Scan the scan the keyboard
|
|
} while ( ! cpct_isAnyKeyPressed_f() );
|
|
|
|
return c;
|
|
}
|
|
|
|
//////////////////////////////////////////////////////////////////
|
|
// initialize
|
|
// Shows introductory messages and initializes the pseudo-random
|
|
// number generator
|
|
//
|
|
void initialize() {
|
|
u32 seed; // Value to initialize the random seed
|
|
|
|
// Introductory message
|
|
printf("\017\003========= BASIC RANDOM NUMBERS =========\n\n\r");
|
|
printf("\017\002Press any key to generate random numbers\n\n\r");
|
|
|
|
// Wait till the users presses a key and use the number of
|
|
// passed cycles as random seed for the Random Number Generator
|
|
seed = wait4UserKeypress();
|
|
|
|
// Random seed may never be 0, so check first and add 1 if it was 0
|
|
if (!seed)
|
|
seed++;
|
|
|
|
// Print the seed and seed the random number generator
|
|
printf("\017\003Selected seed: \017\002%d\n\r", seed);
|
|
cpct_srand8(seed);
|
|
}
|
|
|
|
//////////////////////////////////////////////////////////////////
|
|
// printRandomNumbers
|
|
// Prints some random numbers in the screen, as requested.
|
|
// INPUT:
|
|
// nNumbers - Total amount of pseudo-random numbers to print
|
|
//
|
|
void printRandomNumbers(u8 nNumbers) {
|
|
// Anounce numbers
|
|
printf("\017\003Generating \017\002%d\017\003 random numbers\n\n\r\017\001", N_RND_NUMBERS);
|
|
|
|
// Count from nNumbers to 0, printing random numbers
|
|
while (nNumbers--) {
|
|
u8 random_number = cpct_rand(); // Get next random number
|
|
printf("%d ", random_number); // Print it
|
|
}
|
|
|
|
// End printing with newlines
|
|
printf("\n\n\r");
|
|
}
|
|
|
|
//////////////////////////////////////////////////////////////////
|
|
// MAIN ENTRY POINT OF THE APPLICATION
|
|
//
|
|
void main(void) {
|
|
// Loop forever
|
|
while (1) {
|
|
// Initialize everything and print some random numbers
|
|
initialize();
|
|
printRandomNumbers(N_RND_NUMBERS);
|
|
|
|
// Wait 'till the user stops pressing a key
|
|
do { cpct_scanKeyboard_f(); } while ( cpct_isAnyKeyPressed_f() );
|
|
}
|
|
}
|