Thank you Mattias :)
A member registered Oct 25, 2017
Recent community posts
Hey guys, I also made a quick program to visualize the default doslike palette (it will be useful for future projects):
#include <stdio.h>
#include <stddef.h>
#include <stdlib.h>
#include <stdint.h>
#include <stdbool.h>
#include <math.h>
#include <time.h>
#include "dos.h"
#define SCREEN_WIDTH screenwidth()
#define SCREEN_HEIGHT screenheight()
#define SQUARE_SIZE 15 // sqrt((SCREEN_WIDTH * SCREEN_HEIGHT) / MAX_PALETTE) == 15.8 (if SCREEN_WIDTH = 320, SCREEN_HEIGHT = 200, MAX_PALETTE = 256)
#define OFFSET 2
#define COLS_PER_ROW 21 // (SCREEN_WIDTH / SQUARE_SIZE) == 21.3333 (if SCREEN_WIDTH = 320, SQUARE_SIZE = 15)
#define MAX_PALETTE 256
#define COLOR_WHITE 15
#define COLOR_RED 41
#define PADDING 1
#define MOUSE_CURSOR_SIZE 3
char textbuffer[17]; // utility buffer for textual stuff
void input(void) {
if (keystate(KEY_ESCAPE)) exit(0); // exit the game
}
void update(void) {
}
void draw(void) {
int palindex = 0;
int x, y;
// mouse position & color
int mx = mousex(), my = mousey();
int mc = COLOR_RED;
// draw each color of the palette
for (int row = 0; palindex < MAX_PALETTE; row++) {
// row by row, as long as we have colors in the palette to draw
for (int col = 0; col < COLS_PER_ROW && palindex < MAX_PALETTE; col++) {
x = OFFSET + (col * SQUARE_SIZE);
y = OFFSET + (row * SQUARE_SIZE);
setcolor(palindex);
bar(x, y, SQUARE_SIZE - PADDING, SQUARE_SIZE - PADDING);
if (mx > x && mx < (x + SQUARE_SIZE) && my > y && my < (y + SQUARE_SIZE)) {
setcolor(COLOR_WHITE);
x = (SCREEN_WIDTH * 0.5) - 50;
y = SCREEN_HEIGHT - 15;
sprintf(textbuffer, "getcolor() = %d", palindex); outtextxy(x, y, textbuffer);
// if the mouse (that has a red cursor) is inside a redish color
// give to it a white color to increase contrast
if (palindex == 4 || palindex == 12 || (palindex >= 34 && palindex <= 41) || (palindex >= 108 && palindex <= 114))
mc = COLOR_WHITE;
}
palindex++;
}
}
// mouse cursor
setcolor(mc);
bar(mx, my, MOUSE_CURSOR_SIZE, MOUSE_CURSOR_SIZE);
}
int main(int argc, char* argv[]) {
setvideomode(videomode_320x200);
setdoublebuffer(1);
uint8_t* screen = screenbuffer();
while (!shuttingdown()) {
waitvbl();
clearscreen();
input();
update();
draw();
screen = swapbuffers();
}
return 0;
}
dos-like community · Created a new topic How to Generate Random Beeps (Square Waves)? (I am getting only noise).
