comparison: src/core.c
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 } |
