63 lines
1.4 KiB
C
63 lines
1.4 KiB
C
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#include <sysinit.h>
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#include "basic/basic.h"
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#include "lcd/render.h"
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#include "usetable.h"
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#define SCREEN_WIDTH 12
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#define SCREEN_HEIGHT 8
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#define INVALID_POS 127
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#define FONT_WIDTH 7
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#define FONT_HEIGHT 8
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#define MATRIX_LINES_LENGTH 15
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#define MAX_LINE_LENGTH 6
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void ram(void){
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lcdClear();
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struct matrix_line {
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int head_x, head_y;
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int cur_length;
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int length;
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} matrix_lines[MATRIX_LINES_LENGTH];
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for (int i = 0; i < MATRIX_LINES_LENGTH; i++) {
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matrix_lines[i].cur_length = -1;
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}
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while (1) {
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for(int i = 0; i<MATRIX_LINES_LENGTH; i++) {
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struct matrix_line *ml = matrix_lines + i;
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// new tail
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if (ml->cur_length == -1) {
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ml->head_x = getRandom() % SCREEN_WIDTH;
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ml->head_y = getRandom() % SCREEN_HEIGHT - 1;
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ml->length = getRandom() % MAX_LINE_LENGTH + 3;
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ml->cur_length = 0;
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}
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// new char
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if (ml->head_y < SCREEN_HEIGHT-1) {
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ml->head_y++;
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int chr = getRandom() % 95 + 33;
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DoChar(ml->head_x * FONT_WIDTH, ml->head_y * FONT_HEIGHT, chr);
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ml->cur_length++;
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}
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// remove chars (when length or bottom is reached)
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if (ml->cur_length > ml->length || ml->head_y >= SCREEN_HEIGHT-1) {
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DoChar(ml->head_x * FONT_WIDTH, (ml->head_y - ml->cur_length) * FONT_HEIGHT, ' ');
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ml->cur_length--;
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}
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}
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lcdDisplay();
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// Exit on enter+left
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int key = getInputRaw();
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if(key== BTN_ENTER || key == BTN_LEFT)
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return;
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delayms(60);
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};
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};
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