Mercurial > molko
annotate src/libmlk-core-js/core/js-sprite.c @ 361:39f5d932941a
misc: fix some warnings
| author | David Demelier <markand@malikania.fr> |
|---|---|
| date | Fri, 22 Oct 2021 14:26:41 +0200 |
| parents | 56830e59f776 |
| children | 460c78706989 |
| rev | line source |
|---|---|
| 344 | 1 /* |
| 2 * js-sprite.c -- core sprite binding | |
| 3 * | |
| 4 * Copyright (c) 2020-2021 David Demelier <markand@malikania.fr> | |
| 5 * | |
| 6 * Permission to use, copy, modify, and/or distribute this software for any | |
| 7 * purpose with or without fee is hereby granted, provided that the above | |
| 8 * copyright notice and this permission notice appear in all copies. | |
| 9 * | |
| 10 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES | |
| 11 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF | |
| 12 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR | |
| 13 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES | |
| 14 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN | |
| 15 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF | |
| 16 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. | |
| 17 */ | |
| 18 | |
| 19 #include <assert.h> | |
| 20 | |
| 21 #include <core/alloc.h> | |
| 22 #include <core/sprite.h> | |
| 23 | |
| 24 #include "js-sprite.h" | |
| 25 #include "js-texture.h" | |
| 26 | |
| 27 #define SIGNATURE DUK_HIDDEN_SYMBOL("Mlk.Sprite") | |
|
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28 #define PROTOTYPE DUK_HIDDEN_SYMBOL("Mlk.Sprite.Prototype") |
| 344 | 29 #define TEXREF DUK_HIDDEN_SYMBOL("Mlk.Sprite.texture") |
| 30 | |
| 31 static inline struct sprite * | |
| 32 self(duk_context *ctx) | |
| 33 { | |
| 34 struct sprite *sprite; | |
| 35 | |
| 36 duk_push_this(ctx); | |
| 37 duk_get_prop_string(ctx, -1, SIGNATURE); | |
| 38 sprite = duk_to_pointer(ctx, -1); | |
| 39 duk_pop_2(ctx); | |
| 40 | |
| 41 if (!sprite) | |
|
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42 return (void)duk_error(ctx, DUK_ERR_TYPE_ERROR, "not a Sprite object"), NULL; |
| 344 | 43 |
| 44 return sprite; | |
| 45 } | |
| 46 | |
| 47 static duk_ret_t | |
| 48 Sprite_constructor(duk_context *ctx) | |
| 49 { | |
| 50 struct sprite *sprite; | |
| 51 struct texture *tex = js_texture_require(ctx, 0); | |
| 52 const unsigned int cellw = duk_require_uint(ctx, 1); | |
| 53 const unsigned int cellh = duk_require_uint(ctx, 2); | |
| 54 | |
| 55 sprite = alloc_new0(sizeof (*sprite)); | |
| 56 sprite_init(sprite, tex, cellw, cellh); | |
| 57 | |
| 58 duk_push_this(ctx); | |
| 59 duk_push_pointer(ctx, sprite); | |
| 60 duk_put_prop_string(ctx, -2, SIGNATURE); | |
| 61 | |
| 62 /* Store a copy of texture to avoid destruction. */ | |
| 63 duk_dup(ctx, 0); | |
| 64 duk_put_prop_string(ctx, -2, TEXREF); | |
| 65 | |
| 66 duk_pop(ctx); | |
| 67 | |
| 68 return 0; | |
| 69 } | |
| 70 | |
| 71 static duk_ret_t | |
| 72 Sprite_destructor(duk_context *ctx) | |
| 73 { | |
| 74 duk_get_prop_string(ctx, 0, SIGNATURE); | |
| 75 free(duk_to_pointer(ctx, -1)); | |
| 76 duk_pop(ctx); | |
| 77 duk_del_prop_string(ctx, 0, SIGNATURE); | |
| 78 | |
| 79 /* Remove texture reference. */ | |
| 80 duk_del_prop_string(ctx, 0, TEXREF); | |
| 81 | |
| 82 return 0; | |
| 83 } | |
| 84 | |
| 85 static duk_ret_t | |
| 86 Sprite_draw(duk_context *ctx) | |
| 87 { | |
| 88 const struct sprite *sprite = self(ctx); | |
| 89 const unsigned int r = duk_require_uint(ctx, 0); | |
| 90 const unsigned int c = duk_require_uint(ctx, 1); | |
| 91 const int x = duk_require_int(ctx, 2); | |
| 92 const int y = duk_require_int(ctx, 3); | |
| 93 | |
| 94 if (r >= sprite->nrows) | |
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misc: fix some warnings
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parents:
345
diff
changeset
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95 return duk_error(ctx, DUK_ERR_RANGE_ERROR, "row overflow: %u >= %u", r, sprite->nrows); |
| 344 | 96 if (c >= sprite->ncols) |
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39f5d932941a
misc: fix some warnings
David Demelier <markand@malikania.fr>
parents:
345
diff
changeset
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97 return duk_error(ctx, DUK_ERR_RANGE_ERROR, "column overflow: %u >= %u", c, sprite->ncols); |
| 344 | 98 |
| 99 sprite_draw(sprite, r, c, x, y); | |
| 100 | |
| 101 return 0; | |
| 102 } | |
| 103 | |
| 104 static duk_ret_t | |
| 105 Sprite_scale(duk_context *ctx) | |
| 106 { | |
| 107 const struct sprite *sprite = self(ctx); | |
| 108 const unsigned int r = duk_require_uint(ctx, 0); | |
| 109 const unsigned int c = duk_require_uint(ctx, 1); | |
| 110 const int x = duk_require_int(ctx, 2); | |
| 111 const int y = duk_require_int(ctx, 3); | |
| 112 const unsigned int w = duk_require_uint(ctx, 4); | |
| 113 const unsigned int h = duk_require_uint(ctx, 5); | |
| 114 | |
| 115 if (r >= sprite->nrows) | |
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361
39f5d932941a
misc: fix some warnings
David Demelier <markand@malikania.fr>
parents:
345
diff
changeset
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116 return duk_error(ctx, DUK_ERR_RANGE_ERROR, "row overflow: %u >= %u", r, sprite->nrows); |
| 344 | 117 if (c >= sprite->ncols) |
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361
39f5d932941a
misc: fix some warnings
David Demelier <markand@malikania.fr>
parents:
345
diff
changeset
|
118 return duk_error(ctx, DUK_ERR_RANGE_ERROR, "column overflow: %u >= %u", c, sprite->ncols); |
| 344 | 119 |
| 120 sprite_scale(sprite, r, c, x, y, w, h); | |
| 121 | |
| 122 return 0; | |
| 123 } | |
| 124 | |
| 125 static const duk_function_list_entry methods[] = { | |
| 126 { "draw", Sprite_draw, 4 }, | |
| 127 { "scale", Sprite_scale, 6 }, | |
| 128 { NULL, NULL, 0 } | |
| 129 }; | |
| 130 | |
| 131 void | |
| 132 js_sprite_bind(duk_context *ctx) | |
| 133 { | |
| 134 assert(ctx); | |
| 135 | |
| 136 duk_push_c_function(ctx, Sprite_constructor, 3); | |
| 137 duk_push_object(ctx); | |
| 138 duk_put_function_list(ctx, -1, methods); | |
| 139 duk_push_c_function(ctx, Sprite_destructor, 1); | |
| 140 duk_set_finalizer(ctx, -2); | |
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parents:
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diff
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141 duk_dup(ctx, -1); |
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parents:
344
diff
changeset
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142 duk_put_global_string(ctx, PROTOTYPE); |
| 344 | 143 duk_put_prop_string(ctx, -2, "prototype"); |
| 144 duk_put_global_string(ctx, "Sprite"); | |
| 145 } | |
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parents:
344
diff
changeset
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146 |
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56830e59f776
js: add animation bindings
David Demelier <markand@malikania.fr>
parents:
344
diff
changeset
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147 struct sprite * |
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56830e59f776
js: add animation bindings
David Demelier <markand@malikania.fr>
parents:
344
diff
changeset
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148 js_sprite_require(duk_context *ctx, duk_idx_t idx) |
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56830e59f776
js: add animation bindings
David Demelier <markand@malikania.fr>
parents:
344
diff
changeset
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149 { |
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56830e59f776
js: add animation bindings
David Demelier <markand@malikania.fr>
parents:
344
diff
changeset
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150 struct sprite *sprite; |
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56830e59f776
js: add animation bindings
David Demelier <markand@malikania.fr>
parents:
344
diff
changeset
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151 |
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56830e59f776
js: add animation bindings
David Demelier <markand@malikania.fr>
parents:
344
diff
changeset
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152 duk_get_prop_string(ctx, idx, SIGNATURE); |
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56830e59f776
js: add animation bindings
David Demelier <markand@malikania.fr>
parents:
344
diff
changeset
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153 sprite = duk_to_pointer(ctx, -1); |
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56830e59f776
js: add animation bindings
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parents:
344
diff
changeset
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154 duk_pop(ctx); |
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56830e59f776
js: add animation bindings
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parents:
344
diff
changeset
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155 |
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56830e59f776
js: add animation bindings
David Demelier <markand@malikania.fr>
parents:
344
diff
changeset
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156 if (!sprite) |
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361
39f5d932941a
misc: fix some warnings
David Demelier <markand@malikania.fr>
parents:
345
diff
changeset
|
157 return (void)duk_error(ctx, DUK_ERR_TYPE_ERROR, "not a Sprite object"), NULL; |
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345
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js: add animation bindings
David Demelier <markand@malikania.fr>
parents:
344
diff
changeset
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158 |
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56830e59f776
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parents:
344
diff
changeset
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159 return sprite; |
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56830e59f776
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parents:
344
diff
changeset
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160 } |