Mirai's Miscellaneous Misadventures

M18 / engines / mfb.c

1// copyright 2022 zamfofex
2// license: AGPLv3 or later
3
4#include <stdlib.h>
5
6#include <MiniFB.h>
7
8#include <mimimi/engines.h>
9#include <mimimi/assets.h>
10#include <mimimi/behaviors.h>
11#include <mimimi/geometry.h>
12#include <mimimi/chapters.h>
13
14#include <mimimi/engines/mfb.h>
15
16static struct mimimi_size mimimi_mfb_size = {512, 256};
17
18static void mimimi_mfb_stamp(void *data, int x0, int y0, struct mimimi_image *image)
19{
20	static unsigned char xterm[] = {0x00, 0x5F, 0x87, 0xAF, 0xD7, 0xFF};
21	
22	uint32_t *buffer = data;
23	
24	for (int y = 0 ; y < image->height ; y++)
25	for (int x = 0 ; x < image->width ; x++)
26	{
27		int x1 = x + x0;
28		int y1 = y + y0;
29		
30		if (x1 < 0) continue;
31		if (y1 < 0) continue;
32		if (x1 >= mimimi_mfb_size.width) continue;
33		if (y1 >= mimimi_mfb_size.height) continue;
34		
35		int offset = x1 + y1 * mimimi_mfb_size.width;
36		
37		unsigned char color = image->colors[x + y * image->width];
38		if (color == 0) continue;
39		
40		color -= 16;
41		unsigned char r, g, b;
42		r = xterm[(color / 36) % 6];
43		g = xterm[(color / 6) % 6];
44		b = xterm[color % 6];
45		
46		buffer[offset + 0] = MFB_RGB(r, g, b);
47	}
48}
49
50void mimimi_mfb(struct mimimi_chapter *chapter)
51{
52	struct mfb_window *window = mfb_open_ex("Mirai's Miscellaneous Misadventures", mimimi_mfb_size.width, mimimi_mfb_size.height, WF_RESIZABLE);
53	if (window == NULL) exit(1);
54	
55	uint32_t *buffer = malloc(mimimi_mfb_size.width * mimimi_mfb_size.height * 4);
56	if (buffer == NULL) exit(1);
57	
58	chapter->engine->data = buffer;
59	chapter->engine->stamp = &mimimi_mfb_stamp;
60	chapter->engine->size = &mimimi_mfb_size;
61	
62	struct mimimi_behavior *behavior = chapter->behavior;
63	
64	for (;;)
65	{
66		for (int y = 0 ; y < mimimi_mfb_size.height ; y++)
67		for (int x = 0 ; x < mimimi_mfb_size.width ; x++)
68		{
69			int offset = x + y * mimimi_mfb_size.width;
70			buffer[offset] = MFB_RGB(0xEE, 0xEE, 0xEE);
71		}
72		
73		unsigned char *keys = mfb_get_key_buffer(window);
74		if (keys[KB_KEY_Q]) break;
75		
76		chapter->left = keys[KB_KEY_LEFT];
77		chapter->right = keys[KB_KEY_RIGHT];
78		
79		(*behavior->behave)(behavior->data);
80		
81		if(mfb_update_ex(window, buffer, mimimi_mfb_size.width, mimimi_mfb_size.height) < 0) 
82			break;
83	}
84	
85	mfb_close(window);
86	(*behavior->finish)(behavior->data);
87	free(buffer);
88}