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#include <stdlib.h>
#include <time.h>
#include <unistd.h>
#include "til.h"
#include "draw.h"
/* Copyright (C) 2018-19 Philip J. Freeman <elektron@halo.nu> */
int pix_width = 16;
int pix_height = 16;
int num_pix = 4;
char pix_map[][16*16] = {
{
0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 1, 1, 0, 0, 0, 0, 1, 1, 0, 0, 0, 0,
0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0,
0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0,
0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0,
0, 1, 0, 0, 1, 1, 0, 0, 0, 0, 1, 1, 0, 0, 1, 0,
1, 0, 0, 0, 1, 1, 0, 0, 0, 0, 1, 1, 0, 0, 0, 1,
1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1,
1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1,
1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1,
0, 1, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 1, 0,
0, 1, 0, 0, 1, 1, 0, 0, 0, 0, 1, 1, 0, 0, 1, 0,
0, 0, 1, 0, 0, 0, 1, 1, 1, 1, 0, 0, 0, 1, 0, 0,
0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0,
0, 0, 0, 0, 1, 1, 0, 0, 0, 0, 1, 1, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0,
},
{
0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 1, 1, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 1, 1, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 1, 1, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 1, 1, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 1, 1, 0, 0, 0, 0, 0, 0, 0,
1, 0, 0, 0, 0, 0, 0, 1, 1, 0, 0, 0, 0, 0, 0, 1,
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
1, 0, 0, 0, 0, 0, 0, 1, 1, 0, 0, 0, 0, 0, 0, 1,
0, 0, 0, 0, 0, 0, 0, 1, 1, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 1, 1, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 1, 1, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 1, 1, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 1, 1, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0,
},
{
0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0,
0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0,
0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0,
0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0,
0, 1, 0, 0, 1, 0, 0, 0, 0, 0, 0, 1, 0, 0, 1, 0,
1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1,
1, 0, 0, 0, 0, 0, 1, 0, 0, 1, 0, 0, 0, 0, 0, 1,
1, 0, 0, 0, 0, 0, 0, 1, 1, 0, 0, 0, 0, 0, 0, 1,
1, 0, 0, 0, 0, 0, 0, 1, 1, 0, 0, 0, 0, 0, 0, 1,
1, 0, 0, 0, 0, 0, 1, 0, 0, 1, 0, 0, 0, 0, 0, 1,
1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1,
0, 1, 0, 0, 1, 0, 0, 0, 0, 0, 0, 1, 0, 0, 1, 0,
0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0,
0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0,
0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0,
0, 0, 0, 0, 0, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0,
},
{
0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 1, 1, 0, 0, 0, 0, 1, 1, 0, 0, 0, 0,
0, 0, 0, 1, 0, 0, 0, 1, 1, 0, 0, 0, 1, 0, 0, 0,
0, 0, 1, 0, 0, 0, 1, 0, 0, 1, 0, 0, 0, 1, 0, 0,
0, 1, 0, 0, 0, 0, 1, 0, 0, 1, 0, 0, 0, 0, 1, 0,
0, 1, 0, 0, 0, 0, 0, 1, 1, 0, 0, 0, 0, 0, 1, 0,
1, 0, 0, 1, 1, 0, 0, 0, 0, 0, 0, 1, 1, 0, 0, 1,
1, 0, 1, 0, 0, 1, 0, 0, 0, 0, 1, 0, 0, 1, 0, 1,
1, 0, 1, 0, 0, 1, 0, 0, 0, 0, 1, 0, 0, 1, 0, 1,
1, 0, 0, 1, 1, 0, 0, 0, 0, 0, 0, 1, 1, 0, 0, 1,
0, 1, 0, 0, 0, 0, 0, 1, 1, 0, 0, 0, 0, 0, 1, 0,
0, 1, 0, 0, 0, 0, 1, 0, 0, 1, 0, 0, 0, 0, 1, 0,
0, 0, 1, 0, 0, 0, 1, 0, 0, 1, 0, 0, 0, 1, 0, 0,
0, 0, 0, 1, 0, 0, 0, 1, 1, 0, 0, 0, 1, 0, 0, 0,
0, 0, 0, 0, 1, 1, 0, 0, 0, 0, 1, 1, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0,
},
};
typedef struct pixbounce_context_t {
unsigned n_cpus;
int x, y;
int x_dir, y_dir;
int pix_num;
} pixbounce_context_t;
/* randomly pick another pixmap from the list, excluding the current one. */
static int pick_pix(int num_pics, int last_pic)
{
int pix_num = last_pic;
while(pix_num == last_pic)
pix_num = rand() % num_pics;
return pix_num;
}
static void * pixbounce_create_context(unsigned ticks, unsigned num_cpus, til_setup_t *setup)
{
pixbounce_context_t *ctxt;
ctxt = malloc(sizeof(pixbounce_context_t));
if (!ctxt)
return NULL;
ctxt->n_cpus = num_cpus;
ctxt->x = -1;
ctxt->y = -1;
ctxt->x_dir = 0;
ctxt->y_dir = 0;
ctxt->pix_num = rand() % num_pix;
return ctxt;
}
static void pixbounce_destroy_context(void *context)
{
pixbounce_context_t *ctxt = context;
free(context);
}
static void pixbounce_render_fragment(void *context, unsigned ticks, unsigned cpu, til_fb_fragment_t *fragment)
{
pixbounce_context_t *ctxt = context;
int multiplier_x, multiplier_y, multiplier;
int width = fragment->width, height = fragment->height;
/* check for very small fragment */
if(pix_width*2>width||pix_height*2>height)
return;
/* calculate multiplyer for the pixmap */
multiplier_x = width / pix_width;
multiplier_y = height / pix_height;
if(multiplier_x>=multiplier_y) {
multiplier = multiplier_y * 77 / 100;
} else if(multiplier_y>multiplier_x) {
multiplier = multiplier_x * 77 / 100;
}
/* randomly initialize location and direction of pixmap */
if(ctxt->x == -1) {
ctxt->x = rand() % (width - pix_width * multiplier) + 1;
ctxt->y = rand() % (height - pix_height * multiplier) + 1;
ctxt->x_dir = (rand() % 3) - 1;
ctxt->y_dir = (rand() % 3) - 1;
}
/* blank the frame */
til_fb_fragment_clear(fragment);
/* translate pixmap to multiplier size and draw it to the fragment */
for(int cursor_y=0; cursor_y < pix_height*multiplier; cursor_y++) {
for(int cursor_x=0; cursor_x < pix_width*multiplier; cursor_x++) {
int pix_offset = ((cursor_y/multiplier)*pix_width) + (cursor_x/multiplier);
if(pix_map[ctxt->pix_num][pix_offset] == 0) continue;
til_fb_fragment_put_pixel_unchecked(
fragment, ctxt->x+cursor_x, ctxt->y+cursor_y,
makergb(0xFF, 0xFF, 0xFF, 1)
);
}
}
/* update pixmap location */
if(ctxt->x+ctxt->x_dir < 0) {
ctxt->x_dir = 1;
ctxt->pix_num = pick_pix(num_pix, ctxt->pix_num);
}
if((ctxt->x+(pix_width*multiplier))+ctxt->x_dir > width) {
ctxt->x_dir = -1;
ctxt->pix_num = pick_pix(num_pix, ctxt->pix_num);
}
if(ctxt->y+ctxt->y_dir < 0) {
ctxt->y_dir = 1;
ctxt->pix_num = pick_pix(num_pix, ctxt->pix_num);
}
if((ctxt->y+(pix_height*multiplier))+ctxt->y_dir > height) {
ctxt->y_dir = -1;
ctxt->pix_num = pick_pix(num_pix, ctxt->pix_num);
}
ctxt->x = ctxt->x+ctxt->x_dir;
ctxt->y = ctxt->y+ctxt->y_dir;
}
til_module_t pixbounce_module = {
.create_context = pixbounce_create_context,
.destroy_context = pixbounce_destroy_context,
.render_fragment = pixbounce_render_fragment,
.name = "pixbounce",
.description = "Pixmap bounce",
.author = "Philip J Freeman <elektron@halo.nu>",
.flags = TIL_MODULE_OVERLAYABLE,
};
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