reinit repo after broken git
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krzosa
212
src/app/app_wasm.c
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212
src/app/app_wasm.c
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#define WASM_EXPORT __attribute__((visibility("default")))
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f64 wasm_parse_float(isize str, i32 len);
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void wasm_write_to_console(isize str, i32 len);
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void wasm_draw_text(isize str, i32 len, f64 x, f64 y, isize font_str, i32 font_len, i32 font_size, f32 r, f32 g, f32 b, f32 a);
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void wasm_draw_rect(f64 x, f64 y, f64 w, f64 h, f32 r, f32 g, f32 b, f32 a);
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f64 wasm_measure_text(isize str, i32 len, isize font_str, i32 font_len, i32 font_size);
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f64 wasm_get_font_height(isize font_str, i32 font_len, i32 font_size);
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void wasm_set_clip(f64 x, f64 y, f64 w, f64 h);
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void on_update();
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void app_update(app_event_t *events);
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extern char __heap_base;
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ma_arena_t wasm_perm_arena;
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WASM_EXPORT char wasm_temp_buff1[128] = {[127] = 0x13};
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WASM_EXPORT i32 wasm_temp_buff1_len = 127;
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WASM_EXPORT char wasm_temp_buff2[128] = {[127] = 0x13};
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WASM_EXPORT i32 wasm_temp_buff2_len = 127;
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char *font_face = "fira";
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i32 font_face_len = 4;
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f64 wasm_dpr;
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ma_arena_t *wasm_input_text_arena;
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STACK(app_event_t, 64) wasm_events;
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b32 wasm_event_failed_to_queue;
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f64 wasm_last_time = 0;
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void write_to_console(char *string) {
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int len = str_len(string);
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wasm_write_to_console((isize)string, len);
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}
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f64 s8_deserial_f64(s8_t string) {
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return wasm_parse_float((isize)string.str, (i32)string.len);
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}
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void clip(r2f64_t rect) {
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wasm_set_clip(wasm_dpr * rect.min.x, wasm_dpr * rect.min.y, wasm_dpr * (rect.max.x - rect.min.x), wasm_dpr * (rect.max.y - rect.min.y));
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}
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f64 get_font_height(void) {
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return wasm_get_font_height((isize) font_face, font_face_len, 20*wasm_dpr) / wasm_dpr;
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}
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f64 measure_text_ex(char *str, int len) {
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return wasm_measure_text((isize)str, len, (isize) font_face, font_face_len, 20*wasm_dpr) / wasm_dpr;
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}
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f64 measure_text(char *str) {
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return measure_text_ex(str, str_len(str));
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}
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void draw_text(v2f64_t pos, v4f32_t color, char *str, int len) {
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wasm_draw_text((isize)str, len, wasm_dpr * pos.x, wasm_dpr * pos.y, (isize) font_face, font_face_len, 20*wasm_dpr, color.r * 255.f, color.g * 255.f, color.b * 255.f, color.a);
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}
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void draw_textf(v2f64_t pos, char *str, ...) {
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char buff[1024];
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va_list args;
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va_start(args, str);
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int len = stbsp_vsnprintf(buff, sizeof(buff), str, args);
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va_end(args);
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wasm_draw_text((isize)buff, len, wasm_dpr * pos.x, wasm_dpr * pos.y, (isize) font_face, font_face_len, 20*wasm_dpr, 0, 0, 0, 1);
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}
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void draw_rect(r2f64_t rect, v4f32_t color) {
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wasm_draw_rect(wasm_dpr * rect.min.x, wasm_dpr * rect.min.y, wasm_dpr * (rect.max.x - rect.min.x), wasm_dpr * (rect.max.y - rect.min.y), color.r * 255.f, color.g * 255.f, color.b * 255.f, color.a);
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}
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void wasm_add_event(app_event_t event) {
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if (wasm_events.len < lengthof(wasm_events.data)) {
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STACK_PUSH(wasm_events, event);
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} else if (wasm_event_failed_to_queue == false) {
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wasm_event_failed_to_queue = true;
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debugf("failed to queue event");
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}
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}
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WASM_EXPORT void wasm_mouse_move(f64 x, f64 y, b32 ctrl, b32 shift, b32 alt, b32 meta) {
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wasm_add_event((app_event_t){
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.kind = app_event_kind_mouse_move,
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.mouse_pos = {x, y},
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.ctrl = ctrl,
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.shift = shift,
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.alt = alt,
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.meta = meta,
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});
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}
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WASM_EXPORT void wasm_mouse_down(f64 x, f64 y, i32 button, b32 ctrl, b32 shift, b32 alt, b32 meta) {
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button += 1;
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assert(button >= app_mouse_button_left && button <= app_mouse_button_right);
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wasm_add_event((app_event_t){
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.kind = app_event_kind_mouse_down,
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.mouse_pos = {x, y},
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.mouse_button = button,
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.ctrl = ctrl,
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.shift = shift,
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.alt = alt,
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.meta = meta,
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});
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}
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WASM_EXPORT void wasm_mouse_up(f64 x, f64 y, i32 button, b32 ctrl, b32 shift, b32 alt, b32 meta) {
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button += 1;
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assert(button >= app_mouse_button_left && button <= app_mouse_button_right);
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wasm_add_event((app_event_t){
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.kind = app_event_kind_mouse_up,
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.mouse_pos = {x, y},
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.mouse_button = button,
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.ctrl = ctrl,
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.shift = shift,
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.alt = alt,
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.meta = meta,
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});
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}
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WASM_EXPORT void wasm_mouse_wheel(f64 delta_x, f64 delta_y, f64 delta_z, b32 ctrl, b32 shift, b32 alt, b32 meta) {
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wasm_add_event((app_event_t){
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.kind = app_event_kind_mouse_wheel,
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.mouse_wheel_delta = {delta_x, delta_y, delta_z},
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.ctrl = ctrl,
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.shift = shift,
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.alt = alt,
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.meta = meta,
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});
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}
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WASM_EXPORT void wasm_key_down(char *key, b32 ctrl, b32 shift, b32 alt, b32 meta) {
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assert(wasm_temp_buff1[127] == 0x13); // make sure we didn't overwrite memory in JS
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assert(wasm_temp_buff2[127] == 0x13);
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s8_t key8 = s8_from_char(key);
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wasm_key_map_t map = wasm_map_key_string_to_app_key(key8);
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if (map.key != app_key_invalid) {
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wasm_add_event((app_event_t){
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.kind = app_event_kind_key_down,
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.key = map.key,
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.ctrl = ctrl,
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.shift = shift,
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.alt = alt,
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.meta = meta,
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});
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}
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if (map.filter_out) {
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return;
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}
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s8_t text = s8_copy(wasm_input_text_arena, key8);
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wasm_add_event((app_event_t){
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.kind = app_event_kind_text,
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.text = text,
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.ctrl = ctrl,
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.shift = shift,
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.alt = alt,
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.meta = meta,
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});
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}
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WASM_EXPORT void wasm_key_up(char *key, b32 ctrl, b32 shift, b32 alt, b32 meta) {
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assert(wasm_temp_buff1[127] == 0x13); // make sure we didn't overwrite memory in JS
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assert(wasm_temp_buff2[127] == 0x13);
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s8_t key8 = s8_from_char(key);
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wasm_key_map_t map = wasm_map_key_string_to_app_key(key8);
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if (map.key != app_key_invalid) {
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wasm_add_event((app_event_t){
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.kind = app_event_kind_key_down,
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.key = map.key,
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.ctrl = ctrl,
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.shift = shift,
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.alt = alt,
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.meta = meta,
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});
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}
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}
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WASM_EXPORT void wasm_update(f64 time, f64 width, f64 height, f64 dpr) {
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f64 delta_time = (time - wasm_last_time);
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for (i32 i = 0; i < wasm_events.len; i += 1) {
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wasm_events.data[i].dpr = dpr;
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wasm_events.data[i].window_size = (v2f32_t){width / dpr, height / dpr};
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wasm_events.data[i].time = time;
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wasm_events.data[i].delta_time = delta_time;
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}
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wasm_dpr = dpr;
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on_update();
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wasm_events.len = 0;
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wasm_last_time = time;
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ma_set0(wasm_input_text_arena);
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}
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WASM_EXPORT void wasm_init(void) {
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isize page_size = kib(64);
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isize page_count = __builtin_wasm_memory_size(0);
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u8 *memory = (u8 *)&__heap_base;
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usize memory_size = page_count * (page_size) - (isize)memory;
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wasm_perm_arena.data = memory;
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wasm_perm_arena.commit = wasm_perm_arena.reserve = memory_size;
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wasm_input_text_arena = ma_push_arena(&wasm_perm_arena, kib(1));
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debugf("on_init, __builtin_wasm_memory_size(0) = %d(%d)", page_count, memory_size);
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}
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