src/core.c

changeset 7
9dd76cbd6c90
parent 6
302971e8599b
child 8
756b49205a29
equal deleted inserted replaced
6:302971e8599b 7:9dd76cbd6c90
1 /*
2 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
3 * Copyright 2023 Mike Becker. All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions are met:
7 *
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 *
11 * 2. Redistributions in binary form must reproduce the above copyright
12 * notice, this list of conditions and the following disclaimer in the
13 * documentation and/or other materials provided with the distribution.
14 *
15 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
16 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
18 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
19 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
20 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
21 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
22 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
23 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
24 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
25 * POSSIBILITY OF SUCH DAMAGE.
26 */
27
28 #include "ascension/core.h"
29
30 #include <cx/linked_list.h>
31 #include <cx/printf.h>
32
33 #include <SDL2/SDL.h>
34 #include <SDL2/SDL_ttf.h>
35
36 AscContext asc_context;
37
38 // forward declare the destructor functions that reside in other units
39 void asc_window_destroy_impl(void* obj);
40
41 void asc_context_initialize(void) {
42 if (asc_test_flag(asc_context.flags, ASC_FLAG_INITILIZED))
43 return;
44 asc_clear_flag(&asc_context.flags, ASC_FLAG_HAS_ERROR);
45
46 // initialize error buffer
47 cxBufferInit(
48 &asc_context.error_buffer,
49 NULL,
50 256,
51 NULL,
52 CX_BUFFER_AUTO_EXTEND
53 );
54
55 // initialize lists
56 asc_context.windows = cxLinkedListCreateSimple(CX_STORE_POINTERS);
57 asc_context.windows->simple_destructor =
58 (cx_destructor_func)asc_window_destroy_impl;
59
60 // initialize SDL
61 if (SDL_Init(SDL_INIT_VIDEO) < 0) {
62 asc_error(SDL_GetError());
63 } else {
64 if (TTF_Init() < 0) {
65 asc_error(TTF_GetError());
66 }
67 }
68 SDL_ClearError();
69 asc_set_flag(&asc_context.flags, ASC_FLAG_INITILIZED);
70 asc_dprintf("Ascension context initialized.");
71 }
72
73 void asc_context_destroy(void) {
74 // destroy lists
75 cxListDestroy(asc_context.windows);
76
77 // quit SDL
78 if (TTF_WasInit())
79 TTF_Quit();
80 SDL_Quit();
81
82 // destroy the error buffer
83 cxBufferDestroy(&asc_context.error_buffer);
84 asc_context.flags = 0;
85 asc_dprintf("Ascension context destroyed.");
86 }
87
88 void asc_error_cchar(char const* text) {
89 asc_error_cxstr(cx_str(text));
90 }
91
92 void asc_error_cuchar(unsigned char const* text) {
93 asc_error_cxstr(cx_str((char const*)text));
94 }
95
96 void asc_error_cxstr(cxstring text) {
97 if (text.length == 0) return;
98
99 // write error to debug output
100 asc_dprintf("ERROR: %*.s", (int)text.length, text.ptr);
101
102 // write error to buffer
103 CxBuffer* buf = &asc_context.error_buffer;
104 cxBufferWrite(text.ptr, 1, text.length, buf);
105 cxBufferPut(buf, '\n');
106
107 asc_set_flag(&asc_context.flags, ASC_FLAG_HAS_ERROR);
108 }
109
110 bool asc_has_error(void) {
111 return asc_test_flag(asc_context.flags, ASC_FLAG_HAS_ERROR);
112 }
113
114 char const* asc_get_error(void) {
115 // we zero-terminate the current buffer contents before providing them
116 cxBufferPut(&asc_context.error_buffer, 0);
117 --asc_context.error_buffer.pos;
118 --asc_context.error_buffer.size;
119 return asc_context.error_buffer.space;
120 }
121
122 void asc_clear_error(void) {
123 cxBufferClear(&asc_context.error_buffer);
124 asc_clear_flag(&asc_context.flags, ASC_FLAG_HAS_ERROR);
125 }

mercurial