luboslenco
111 lines
2.4 KiB
TypeScript
111 lines
2.4 KiB
TypeScript
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type random_node_t = {
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base?: logic_node_t;
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};
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let random_node_a: i32;
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let random_node_b: i32;
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let random_node_c: i32;
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let random_node_d: i32 = -1;
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function random_node_create(args: f32_array_t): random_node_t {
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let n: random_node_t = {};
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n.base = logic_node_create();
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n.base.get = random_node_get;
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return n;
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}
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function random_node_get(self: random_node_t, from: i32): logic_node_value_t {
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let min: f32 = logic_node_input_get(self.base.inputs[0])._f32;
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let max: f32 = logic_node_input_get(self.base.inputs[1])._f32;
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let v: logic_node_value_t = { _f32: min + random_node_get_float() * (max - min) };
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return v;
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}
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function random_node_get_int(): i32 {
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if (random_node_d == -1) {
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random_node_set_seed(352124);
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}
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// Courtesy of https://github.com/Kode/Kha/blob/main/Sources/kha/math/Random.hx
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let t: i32 = (random_node_a + random_node_b | 0) + random_node_d | 0;
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random_node_d = random_node_d + 1 | 0;
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let urandom_node_b: u32 = random_node_b;
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random_node_a = random_node_b ^ urandom_node_b >> 9;
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random_node_b = random_node_c + (random_node_c << 3) | 0;
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let urandom_node_c: u32 = random_node_c;
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random_node_c = random_node_c << 21 | urandom_node_c >> 11;
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random_node_c = random_node_c + t | 0;
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return t & 0x7fffffff;
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}
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function random_node_set_seed(seed: i32) {
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random_node_d = seed;
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random_node_a = 0x36aef51a;
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random_node_b = 0x21d4b3eb;
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random_node_c = 0xf2517abf;
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// Immediately skip a few possibly poor results the easy way
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for (let i: i32 = 0; i < 15; ++i) {
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random_node_get_int();
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}
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}
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function random_node_get_seed(): i32 {
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return random_node_d;
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}
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function random_node_get_float(): f32 {
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return random_node_get_int() / 0x7fffffff;
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}
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let random_node_def: ui_node_t = {
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id: 0,
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name: _tr("Random"),
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type: "random_node",
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x: 0,
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y: 0,
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color: 0xffb34f5a,
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inputs: [
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{
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id: 0,
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node_id: 0,
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name: _tr("Min"),
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type: "VALUE",
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color: 0xffa1a1a1,
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default_value: f32_array_create_x(0.0),
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min: 0.0,
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max: 1.0,
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precision: 100,
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display: 0
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},
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{
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id: 0,
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node_id: 0,
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name: _tr("Max"),
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type: "VALUE",
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color: 0xffa1a1a1,
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default_value: f32_array_create_x(1.0),
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min: 0.0,
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max: 1.0,
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precision: 100,
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display: 0
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}
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],
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outputs: [
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{
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id: 0,
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node_id: 0,
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name: _tr("Value"),
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type: "VALUE",
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color: 0xffa1a1a1,
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default_value: f32_array_create_x(0.5),
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min: 0.0,
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max: 1.0,
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precision: 100,
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display: 0
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}
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],
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buttons: [],
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width: 0
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};
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