85 lines
2.4 KiB
C
85 lines
2.4 KiB
C
// Copyright 2013 Normmatt
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// Licensed under GPLv2 or any later version
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// Refer to the license.txt file included.
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#include <stdlib.h>
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#include <string.h>
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#include <stdarg.h>
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#include <stdio.h>
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#include "font.h"
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#include "draw.h"
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int current_y = 0;
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void ClearScreen(unsigned char *screen, int color)
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{
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int i;
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unsigned char *screenPos = screen;
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for (i = 0; i < (SCREEN_HEIGHT * SCREEN_WIDTH); i++) {
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*(screenPos++) = color >> 16; // B
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*(screenPos++) = color >> 8; // G
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*(screenPos++) = color & 0xFF; // R
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}
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}
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void DrawCharacter(unsigned char *screen, int character, int x, int y, int color, int bgcolor)
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{
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int yy, xx;
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for (yy = 0; yy < 8; yy++) {
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int xDisplacement = (x * BYTES_PER_PIXEL * SCREEN_WIDTH);
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int yDisplacement = ((SCREEN_WIDTH - (y + yy) - 1) * BYTES_PER_PIXEL);
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unsigned char *screenPos = screen + xDisplacement + yDisplacement;
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unsigned char charPos = font[character * 8 + yy];
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for (xx = 7; xx >= 0; xx--) {
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if ((charPos >> xx) & 1) {
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*(screenPos + 0) = color >> 16; // B
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*(screenPos + 1) = color >> 8; // G
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*(screenPos + 2) = color & 0xFF; // R
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} else {
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*(screenPos + 0) = bgcolor >> 16; // B
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*(screenPos + 1) = bgcolor >> 8; // G
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*(screenPos + 2) = bgcolor & 0xFF; // R
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}
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screenPos += BYTES_PER_PIXEL * SCREEN_WIDTH;
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}
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}
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}
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void DrawString(unsigned char *screen, const char *str, int x, int y, int color, int bgcolor)
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{
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const size_t string_len = strlen(str);
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for (size_t i = 0; i < string_len; i++)
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DrawCharacter(screen, str[i], x + i * 8, y, color, bgcolor);
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}
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void DrawStringF(int x, int y, const char *format, ...)
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{
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char str[256];
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va_list va;
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va_start(va, format);
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vsnprintf(str, 256, format, va);
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va_end(va);
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DrawString(TOP_SCREEN0, str, x, y, RGB(0, 0, 0), RGB(255, 255, 255));
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DrawString(TOP_SCREEN1, str, x, y, RGB(0, 0, 0), RGB(255, 255, 255));
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}
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void Debug(const char *format, ...)
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{
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char str[256];
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va_list va;
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va_start(va, format);
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vsnprintf(str, 256, format, va);
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va_end(va);
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DrawString(TOP_SCREEN0, str, 10, current_y, RGB(255, 0, 0), RGB(255, 255, 255));
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DrawString(TOP_SCREEN1, str, 10, current_y, RGB(255, 0, 0), RGB(255, 255, 255));
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current_y += 10;
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}
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