Optimization: grid processing array
This commit is contained in:
Dejvino
+316
-249
@@ -1,5 +1,6 @@
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#include "synth_engine.h"
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#include <math.h>
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#include <utility>
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#include <string.h>
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// A simple sine lookup table for the sine oscillator
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@@ -35,6 +36,7 @@ SynthEngine::SynthEngine(uint32_t sampleRate)
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// Initialize SINK
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grid[GRID_W / 2][GRID_H - 1].type = GridCell::SINK;
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rebuildProcessingOrder();
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}
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SynthEngine::~SynthEngine() {
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@@ -70,6 +72,7 @@ void SynthEngine::importGrid(const uint8_t* buffer) {
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c.rotation = r;
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}
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}
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rebuildProcessingOrder_locked();
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}
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void SynthEngine::clearGrid() {
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@@ -84,8 +87,10 @@ void SynthEngine::clearGrid() {
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c.rotation = 0;
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c.value = 0.0f;
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c.phase = 0.0f;
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c.next_value = 0.0f;
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}
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}
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rebuildProcessingOrder_locked();
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}
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void SynthEngine::loadPreset(int preset) {
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@@ -201,6 +206,8 @@ void SynthEngine::loadPreset(int preset) {
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grid[sinkX][y].type = GridCell::WIRE; grid[sinkX][y].rotation = 2;
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}
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}
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rebuildProcessingOrder_locked();
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}
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void SynthEngine::setFrequency(float freq) {
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@@ -236,9 +243,68 @@ float SynthEngine::_random() {
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return (float)_rngState / 4294967296.0f;
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}
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void SynthEngine::rebuildProcessingOrder_locked() {
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_processing_order.clear();
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bool visited[GRID_W][GRID_H] = {false};
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std::vector<std::pair<int, int>> q;
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// Start BFS from the SINK backwards
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q.push_back({GRID_W / 2, GRID_H - 1});
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visited[GRID_W / 2][GRID_H - 1] = true;
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int head = 0;
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while(head < (int)q.size()) {
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std::pair<int, int> curr = q[head++];
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int cx = curr.first;
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int cy = curr.second;
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// Check neighbors to see if they output to (cx, cy)
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int nx_offsets[4] = {0, 1, 0, -1};
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int ny_offsets[4] = {-1, 0, 1, 0};
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for(int i=0; i<4; ++i) {
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int tx = cx + nx_offsets[i];
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int ty = cy + ny_offsets[i];
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if (tx >= 0 && tx < GRID_W && ty >= 0 && ty < GRID_H && !visited[tx][ty]) {
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GridCell& neighbor = grid[tx][ty];
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bool pointsToCurr = false;
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if (neighbor.type != GridCell::EMPTY && neighbor.type != GridCell::SINK) {
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int dx = cx - tx;
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int dy = cy - ty;
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int dir = -1;
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if (dx == 0 && dy == -1) dir = 0; // N
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else if (dx == 1 && dy == 0) dir = 1; // E
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else if (dx == 0 && dy == 1) dir = 2; // S
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else if (dx == -1 && dy == 0) dir = 3; // W
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if (neighbor.type == GridCell::FORK) {
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int leftOut = (neighbor.rotation + 3) % 4;
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int rightOut = (neighbor.rotation + 1) % 4;
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if (dir == leftOut || dir == rightOut) pointsToCurr = true;
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} else {
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if (neighbor.rotation == dir) pointsToCurr = true;
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}
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}
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if (pointsToCurr) {
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visited[tx][ty] = true;
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q.push_back({tx, ty});
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}
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}
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}
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}
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_processing_order = q;
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}
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void SynthEngine::rebuildProcessingOrder() {
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SynthLockGuard<SynthMutex> lock(gridMutex);
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rebuildProcessingOrder_locked();
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}
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float SynthEngine::processGridStep() {
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// Double buffer for values to handle feedback loops gracefully (1-sample delay)
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static float next_values[GRID_W][GRID_H];
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auto isConnected = [&](int tx, int ty, int from_x, int from_y) -> bool {
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if (from_x < 0 || from_x >= GRID_W || from_y < 0 || from_y >= GRID_H) return false;
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@@ -327,260 +393,261 @@ float SynthEngine::processGridStep() {
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return hasSide ? gain : 1.0f;
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};
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for (int x = 0; x < GRID_W; ++x) {
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for (int y = 0; y < GRID_H; ++y) {
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GridCell& c = grid[x][y];
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float val = 0.0f;
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// 1. Calculate next values for active cells
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for (const auto& cell_coord : _processing_order) {
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int x = cell_coord.first;
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int y = cell_coord.second;
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GridCell& c = grid[x][y];
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float val = 0.0f;
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if (c.type == GridCell::EMPTY) {
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if (c.type == GridCell::EMPTY) {
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val = 0.0f;
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} else if (c.type == GridCell::FIXED_OSCILLATOR) {
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// Gather inputs for modulation
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float mod = getInputFromTheBack(x, y, c);
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// Freq 10 to 1000 Hz
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float freq = 10.0f + c.param * 990.0f + (mod * 500.0f); // FM
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if (freq < 1.0f) freq = 1.0f;
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float inc = freq * (float)SINE_TABLE_SIZE / (float)_sampleRate;
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c.phase += inc;
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if (c.phase >= SINE_TABLE_SIZE) c.phase -= SINE_TABLE_SIZE;
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val = (float)sine_table[(int)c.phase] / 32768.0f;
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val *= getSideInputGain(x, y, c);
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} else if (c.type == GridCell::INPUT_OSCILLATOR) {
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float mod = getInputFromTheBack(x, y, c);
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// Freq based on current note + octave param (1-5)
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float baseFreq = getFrequency();
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int octave = 1 + (int)(c.param * 4.99f); // Map 0.0-1.0 to 1-5
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float freq = baseFreq * (float)(1 << (octave - 1)); // 2^(octave-1)
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freq += (mod * 500.0f); // Apply FM
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if (freq < 1.0f) freq = 1.0f; // Protect against negative/zero freq
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float inc = freq * (float)SINE_TABLE_SIZE / (float)_sampleRate;
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c.phase += inc;
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if (c.phase >= SINE_TABLE_SIZE) c.phase -= SINE_TABLE_SIZE;
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val = (float)sine_table[(int)c.phase] / 32768.0f;
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val *= getSideInputGain(x, y, c);
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} else if (c.type == GridCell::WAVETABLE) {
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float mod = getInputFromTheBack(x, y, c);
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// Track current note frequency + FM
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float freq = getFrequency() + (mod * 500.0f);
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if (freq < 1.0f) freq = 1.0f;
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float inc = freq * (float)SINE_TABLE_SIZE / (float)_sampleRate;
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c.phase += inc;
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if (c.phase >= SINE_TABLE_SIZE) c.phase -= SINE_TABLE_SIZE;
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float phase_norm = c.phase / (float)SINE_TABLE_SIZE; // 0.0 to 1.0
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int wave_select = (int)(c.param * 7.99f);
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switch(wave_select) {
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case 0: val = (float)sine_table[(int)c.phase] / 32768.0f; break;
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case 1: val = (phase_norm * 2.0f) - 1.0f; break; // Saw
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case 2: val = (phase_norm < 0.5f) ? 1.0f : -1.0f; break; // Square
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case 3: val = (phase_norm < 0.5f) ? (phase_norm * 4.0f - 1.0f) : (3.0f - phase_norm * 4.0f); break; // Triangle
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case 4: val = 1.0f - (phase_norm * 2.0f); break; // Ramp
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case 5: val = (phase_norm < 0.25f) ? 1.0f : -1.0f; break; // Pulse 25%
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case 6: // Distorted Sine
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val = sin(phase_norm * 2.0 * M_PI) + sin(phase_norm * 4.0 * M_PI) * 0.3f;
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val /= 1.3f; // Normalize
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break;
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case 7: // Organ-like
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val = sin(phase_norm * 2.0 * M_PI) * 0.6f +
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sin(phase_norm * 4.0 * M_PI) * 0.2f +
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sin(phase_norm * 8.0 * M_PI) * 0.1f;
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val /= 0.9f; // Normalize
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break;
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}
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val *= getSideInputGain(x, y, c);
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} else if (c.type == GridCell::NOISE) {
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float mod = getInputFromTheBack(x, y, c);
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float white = _random() * 2.0f - 1.0f;
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int shade = (int)(c.param * 4.99f);
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switch(shade) {
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case 0: // Brown (Leaky integrator)
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c.phase = (c.phase + white * 0.1f) * 0.95f;
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val = c.phase * 3.0f; // Gain up
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break;
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case 1: // Pink (Approx: LPF)
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c.phase = 0.5f * c.phase + 0.5f * white;
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val = c.phase;
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break;
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case 2: // White
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val = white;
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break;
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case 3: // Yellow (HPF)
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val = white - c.phase;
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c.phase = white; // Store last sample
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break;
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case 4: // Green (BPF approx)
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c.phase = (c.phase + white) * 0.5f; // LPF
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val = white - c.phase; // HPF result
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break;
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}
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// Apply Amplitude Modulation (AM) from input
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val *= (1.0f + mod);
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val *= getSideInputGain(x, y, c);
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} else if (c.type == GridCell::LFO) {
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// Low Frequency Oscillator (0.1 Hz to 20 Hz)
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float freq = 0.1f + c.param * 19.9f;
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float inc = freq * (float)SINE_TABLE_SIZE / (float)_sampleRate;
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c.phase += inc;
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if (c.phase >= SINE_TABLE_SIZE) c.phase -= SINE_TABLE_SIZE;
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// Output full range -1.0 to 1.0
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val = (float)sine_table[(int)c.phase] / 32768.0f;
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} else if (c.type == GridCell::FORK) {
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// Sum inputs from "Back" (Input direction)
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val = getInputFromTheBack(x, y, c);
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} else if (c.type == GridCell::GATE_INPUT) {
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// Outputs 1.0 when gate is open (key pressed), 0.0 otherwise
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val = _isGateOpen ? 1.0f : 0.0f;
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} else if (c.type == GridCell::ADSR_ATTACK) {
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// Slew Limiter (Up only)
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float in = getInputFromTheBack(x, y, c);
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float rate = 1.0f / (0.001f + c.param * 2.0f * _sampleRate); // 0.001s to 2s
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if (in > c.value) {
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c.value += rate;
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if (c.value > in) c.value = in;
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} else {
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c.value = in;
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}
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val = c.value;
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} else if (c.type == GridCell::ADSR_DECAY || c.type == GridCell::ADSR_RELEASE) {
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// Slew Limiter (Down only)
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float in = getInputFromTheBack(x, y, c);
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float rate = 1.0f / (0.001f + c.param * 2.0f * _sampleRate);
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if (in < c.value) {
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c.value -= rate;
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if (c.value < in) c.value = in;
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} else {
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c.value = in;
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}
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val = c.value;
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} else if (c.type == GridCell::ADSR_SUSTAIN) {
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// Attenuator
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float in = getInputFromTheBack(x, y, c);
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val = in * c.param;
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} else if (c.type == GridCell::WIRE) {
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// Sum inputs from all neighbors that point to me
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float sum = getSummedInput(x, y, c);
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val = sum;
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} else if (c.type == GridCell::LPF) {
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// Input from Back
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float in = getInputFromTheBack(x, y, c);
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// Simple one-pole LPF
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// Cutoff mapping: Exponential-ish 20Hz to 15kHz
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float cutoff = 20.0f + c.param * c.param * 15000.0f;
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float alpha = 2.0f * M_PI * cutoff / (float)_sampleRate;
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if (alpha > 1.0f) alpha = 1.0f;
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// c.phase stores previous output
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val = c.phase + alpha * (in - c.phase);
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c.phase = val;
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} else if (c.type == GridCell::HPF) {
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// Input from Back
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float in = getInputFromTheBack(x, y, c);
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float cutoff = 20.0f + c.param * c.param * 15000.0f;
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float alpha = 2.0f * M_PI * cutoff / (float)_sampleRate;
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if (alpha > 1.0f) alpha = 1.0f;
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// HPF = Input - LPF
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// c.phase stores LPF state
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float lpf = c.phase + alpha * (in - c.phase);
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c.phase = lpf;
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val = in - lpf;
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} else if (c.type == GridCell::VCA) {
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// Input from Back
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float in = getInputFromTheBack(x, y, c);
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// Mod from other directions (sum)
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float mod = getSummedInput(x, y, c);
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mod -= in; // Remove signal input from mod sum (it was included in getInput calls)
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// Gain = Param + Mod
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float gain = c.param + mod;
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if (gain < 0.0f) gain = 0.0f;
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val = in * gain;
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} else if (c.type == GridCell::BITCRUSHER) {
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float in = getInputFromTheBack(x, y, c);
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// Bit depth reduction
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float bits = 1.0f + c.param * 15.0f; // 1 to 16 bits
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float steps = powf(2.0f, bits);
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val = roundf(in * steps) / steps;
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} else if (c.type == GridCell::DISTORTION) {
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float in = getInputFromTheBack(x, y, c);
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// Soft clipping
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float drive = 1.0f + c.param * 20.0f;
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float x_driven = in * drive;
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// Simple soft clip: x / (1 + |x|)
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val = x_driven / (1.0f + fabsf(x_driven));
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} else if (c.type == GridCell::RECTIFIER) {
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float in = getInputFromTheBack(x, y, c);
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// Mix between original and rectified based on param
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float rect = fabsf(in);
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val = in * (1.0f - c.param) + rect * c.param;
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} else if (c.type == GridCell::GLITCH) {
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float in = getInputFromTheBack(x, y, c);
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// Param controls probability of glitch
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float chance = c.param * 0.2f; // 0 to 20% chance per sample
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if (_random() < chance) {
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int mode = (int)(_random() * 3.0f);
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if (mode == 0) val = in * 50.0f; // Massive gain (clipping)
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else if (mode == 1) val = _random() * 2.0f - 1.0f; // White noise burst
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else val = 0.0f; // Drop out
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} else {
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val = in;
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}
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} else if (c.type == GridCell::OPERATOR || c.type == GridCell::SINK) {
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// Gather inputs
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float inputs[4];
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int count = 0;
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int outDir = (c.type == GridCell::SINK) ? -1 : c.rotation;
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float iN = (outDir != 0) ? getInput(x, y, x, y-1) : 0.0f; if(iN!=0) inputs[count++] = iN;
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float iE = (outDir != 1) ? getInput(x, y, x+1, y) : 0.0f; if(iE!=0) inputs[count++] = iE;
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float iS = (outDir != 2) ? getInput(x, y, x, y+1) : 0.0f; if(iS!=0) inputs[count++] = iS;
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float iW = (outDir != 3) ? getInput(x, y, x-1, y) : 0.0f; if(iW!=0) inputs[count++] = iW;
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if (c.type == GridCell::SINK) {
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// Sink just sums everything
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val = 0.0f;
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} else if (c.type == GridCell::FIXED_OSCILLATOR) {
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// Gather inputs for modulation
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float mod = getInputFromTheBack(x, y, c);
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// Freq 10 to 1000 Hz
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float freq = 10.0f + c.param * 990.0f + (mod * 500.0f); // FM
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if (freq < 1.0f) freq = 1.0f;
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float inc = freq * (float)SINE_TABLE_SIZE / (float)_sampleRate;
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c.phase += inc;
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if (c.phase >= SINE_TABLE_SIZE) c.phase -= SINE_TABLE_SIZE;
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val = (float)sine_table[(int)c.phase] / 32768.0f;
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val *= getSideInputGain(x, y, c);
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} else if (c.type == GridCell::INPUT_OSCILLATOR) {
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float mod = getInputFromTheBack(x, y, c);
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// Freq based on current note + octave param (1-5)
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float baseFreq = getFrequency();
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int octave = 1 + (int)(c.param * 4.99f); // Map 0.0-1.0 to 1-5
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float freq = baseFreq * (float)(1 << (octave - 1)); // 2^(octave-1)
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freq += (mod * 500.0f); // Apply FM
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if (freq < 1.0f) freq = 1.0f; // Protect against negative/zero freq
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float inc = freq * (float)SINE_TABLE_SIZE / (float)_sampleRate;
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c.phase += inc;
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if (c.phase >= SINE_TABLE_SIZE) c.phase -= SINE_TABLE_SIZE;
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val = (float)sine_table[(int)c.phase] / 32768.0f;
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val *= getSideInputGain(x, y, c);
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} else if (c.type == GridCell::WAVETABLE) {
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float mod = getInputFromTheBack(x, y, c);
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// Track current note frequency + FM
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float freq = getFrequency() + (mod * 500.0f);
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if (freq < 1.0f) freq = 1.0f;
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float inc = freq * (float)SINE_TABLE_SIZE / (float)_sampleRate;
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c.phase += inc;
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if (c.phase >= SINE_TABLE_SIZE) c.phase -= SINE_TABLE_SIZE;
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float phase_norm = c.phase / (float)SINE_TABLE_SIZE; // 0.0 to 1.0
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int wave_select = (int)(c.param * 7.99f);
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switch(wave_select) {
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case 0: val = (float)sine_table[(int)c.phase] / 32768.0f; break;
|
||||
case 1: val = (phase_norm * 2.0f) - 1.0f; break; // Saw
|
||||
case 2: val = (phase_norm < 0.5f) ? 1.0f : -1.0f; break; // Square
|
||||
case 3: val = (phase_norm < 0.5f) ? (phase_norm * 4.0f - 1.0f) : (3.0f - phase_norm * 4.0f); break; // Triangle
|
||||
case 4: val = 1.0f - (phase_norm * 2.0f); break; // Ramp
|
||||
case 5: val = (phase_norm < 0.25f) ? 1.0f : -1.0f; break; // Pulse 25%
|
||||
case 6: // Distorted Sine
|
||||
val = sin(phase_norm * 2.0 * M_PI) + sin(phase_norm * 4.0 * M_PI) * 0.3f;
|
||||
val /= 1.3f; // Normalize
|
||||
break;
|
||||
case 7: // Organ-like
|
||||
val = sin(phase_norm * 2.0 * M_PI) * 0.6f +
|
||||
sin(phase_norm * 4.0 * M_PI) * 0.2f +
|
||||
sin(phase_norm * 8.0 * M_PI) * 0.1f;
|
||||
val /= 0.9f; // Normalize
|
||||
break;
|
||||
}
|
||||
val *= getSideInputGain(x, y, c);
|
||||
} else if (c.type == GridCell::NOISE) {
|
||||
float mod = getInputFromTheBack(x, y, c);
|
||||
|
||||
float white = _random() * 2.0f - 1.0f;
|
||||
int shade = (int)(c.param * 4.99f);
|
||||
switch(shade) {
|
||||
case 0: // Brown (Leaky integrator)
|
||||
c.phase = (c.phase + white * 0.1f) * 0.95f;
|
||||
val = c.phase * 3.0f; // Gain up
|
||||
break;
|
||||
case 1: // Pink (Approx: LPF)
|
||||
c.phase = 0.5f * c.phase + 0.5f * white;
|
||||
val = c.phase;
|
||||
break;
|
||||
case 2: // White
|
||||
val = white;
|
||||
break;
|
||||
case 3: // Yellow (HPF)
|
||||
val = white - c.phase;
|
||||
c.phase = white; // Store last sample
|
||||
break;
|
||||
case 4: // Green (BPF approx)
|
||||
c.phase = (c.phase + white) * 0.5f; // LPF
|
||||
val = white - c.phase; // HPF result
|
||||
break;
|
||||
}
|
||||
|
||||
// Apply Amplitude Modulation (AM) from input
|
||||
val *= (1.0f + mod);
|
||||
val *= getSideInputGain(x, y, c);
|
||||
} else if (c.type == GridCell::LFO) {
|
||||
// Low Frequency Oscillator (0.1 Hz to 20 Hz)
|
||||
float freq = 0.1f + c.param * 19.9f;
|
||||
float inc = freq * (float)SINE_TABLE_SIZE / (float)_sampleRate;
|
||||
c.phase += inc;
|
||||
if (c.phase >= SINE_TABLE_SIZE) c.phase -= SINE_TABLE_SIZE;
|
||||
// Output full range -1.0 to 1.0
|
||||
val = (float)sine_table[(int)c.phase] / 32768.0f;
|
||||
} else if (c.type == GridCell::FORK) {
|
||||
// Sum inputs from "Back" (Input direction)
|
||||
val = getInputFromTheBack(x, y, c);
|
||||
} else if (c.type == GridCell::GATE_INPUT) {
|
||||
// Outputs 1.0 when gate is open (key pressed), 0.0 otherwise
|
||||
val = _isGateOpen ? 1.0f : 0.0f;
|
||||
} else if (c.type == GridCell::ADSR_ATTACK) {
|
||||
// Slew Limiter (Up only)
|
||||
float in = getInputFromTheBack(x, y, c);
|
||||
float rate = 1.0f / (0.001f + c.param * 2.0f * _sampleRate); // 0.001s to 2s
|
||||
if (in > c.value) {
|
||||
c.value += rate;
|
||||
if (c.value > in) c.value = in;
|
||||
} else {
|
||||
c.value = in;
|
||||
}
|
||||
val = c.value;
|
||||
} else if (c.type == GridCell::ADSR_DECAY || c.type == GridCell::ADSR_RELEASE) {
|
||||
// Slew Limiter (Down only)
|
||||
float in = getInputFromTheBack(x, y, c);
|
||||
float rate = 1.0f / (0.001f + c.param * 2.0f * _sampleRate);
|
||||
if (in < c.value) {
|
||||
c.value -= rate;
|
||||
if (c.value < in) c.value = in;
|
||||
} else {
|
||||
c.value = in;
|
||||
}
|
||||
val = c.value;
|
||||
} else if (c.type == GridCell::ADSR_SUSTAIN) {
|
||||
// Attenuator
|
||||
float in = getInputFromTheBack(x, y, c);
|
||||
val = in * c.param;
|
||||
} else if (c.type == GridCell::WIRE) {
|
||||
// Sum inputs from all neighbors that point to me
|
||||
float sum = getSummedInput(x, y, c);
|
||||
val = sum;
|
||||
} else if (c.type == GridCell::LPF) {
|
||||
// Input from Back
|
||||
float in = getInputFromTheBack(x, y, c);
|
||||
|
||||
// Simple one-pole LPF
|
||||
// Cutoff mapping: Exponential-ish 20Hz to 15kHz
|
||||
float cutoff = 20.0f + c.param * c.param * 15000.0f;
|
||||
float alpha = 2.0f * M_PI * cutoff / (float)_sampleRate;
|
||||
if (alpha > 1.0f) alpha = 1.0f;
|
||||
|
||||
// c.phase stores previous output
|
||||
val = c.phase + alpha * (in - c.phase);
|
||||
c.phase = val;
|
||||
} else if (c.type == GridCell::HPF) {
|
||||
// Input from Back
|
||||
float in = getInputFromTheBack(x, y, c);
|
||||
|
||||
float cutoff = 20.0f + c.param * c.param * 15000.0f;
|
||||
float alpha = 2.0f * M_PI * cutoff / (float)_sampleRate;
|
||||
if (alpha > 1.0f) alpha = 1.0f;
|
||||
|
||||
// HPF = Input - LPF
|
||||
// c.phase stores LPF state
|
||||
float lpf = c.phase + alpha * (in - c.phase);
|
||||
c.phase = lpf;
|
||||
val = in - lpf;
|
||||
} else if (c.type == GridCell::VCA) {
|
||||
// Input from Back
|
||||
float in = getInputFromTheBack(x, y, c);
|
||||
|
||||
// Mod from other directions (sum)
|
||||
float mod = getSummedInput(x, y, c);
|
||||
mod -= in; // Remove signal input from mod sum (it was included in getInput calls)
|
||||
|
||||
// Gain = Param + Mod
|
||||
float gain = c.param + mod;
|
||||
if (gain < 0.0f) gain = 0.0f;
|
||||
val = in * gain;
|
||||
} else if (c.type == GridCell::BITCRUSHER) {
|
||||
float in = getInputFromTheBack(x, y, c);
|
||||
|
||||
// Bit depth reduction
|
||||
float bits = 1.0f + c.param * 15.0f; // 1 to 16 bits
|
||||
float steps = powf(2.0f, bits);
|
||||
val = roundf(in * steps) / steps;
|
||||
} else if (c.type == GridCell::DISTORTION) {
|
||||
float in = getInputFromTheBack(x, y, c);
|
||||
|
||||
// Soft clipping
|
||||
float drive = 1.0f + c.param * 20.0f;
|
||||
float x_driven = in * drive;
|
||||
// Simple soft clip: x / (1 + |x|)
|
||||
val = x_driven / (1.0f + fabsf(x_driven));
|
||||
} else if (c.type == GridCell::RECTIFIER) {
|
||||
float in = getInputFromTheBack(x, y, c);
|
||||
// Mix between original and rectified based on param
|
||||
float rect = fabsf(in);
|
||||
val = in * (1.0f - c.param) + rect * c.param;
|
||||
} else if (c.type == GridCell::GLITCH) {
|
||||
float in = getInputFromTheBack(x, y, c);
|
||||
// Param controls probability of glitch
|
||||
float chance = c.param * 0.2f; // 0 to 20% chance per sample
|
||||
if (_random() < chance) {
|
||||
int mode = (int)(_random() * 3.0f);
|
||||
if (mode == 0) val = in * 50.0f; // Massive gain (clipping)
|
||||
else if (mode == 1) val = _random() * 2.0f - 1.0f; // White noise burst
|
||||
else val = 0.0f; // Drop out
|
||||
} else {
|
||||
val = in;
|
||||
}
|
||||
} else if (c.type == GridCell::OPERATOR || c.type == GridCell::SINK) {
|
||||
// Gather inputs
|
||||
float inputs[4];
|
||||
int count = 0;
|
||||
int outDir = (c.type == GridCell::SINK) ? -1 : c.rotation;
|
||||
|
||||
float iN = (outDir != 0) ? getInput(x, y, x, y-1) : 0.0f; if(iN!=0) inputs[count++] = iN;
|
||||
float iE = (outDir != 1) ? getInput(x, y, x+1, y) : 0.0f; if(iE!=0) inputs[count++] = iE;
|
||||
float iS = (outDir != 2) ? getInput(x, y, x, y+1) : 0.0f; if(iS!=0) inputs[count++] = iS;
|
||||
float iW = (outDir != 3) ? getInput(x, y, x-1, y) : 0.0f; if(iW!=0) inputs[count++] = iW;
|
||||
|
||||
if (c.type == GridCell::SINK) {
|
||||
// Sink just sums everything
|
||||
val = 0.0f;
|
||||
for(int k=0; k<count; ++k) val += inputs[k];
|
||||
} else {
|
||||
// Operator
|
||||
int opType = (int)(c.param * 5.99f);
|
||||
if (count == 0) val = 0.0f;
|
||||
else {
|
||||
val = inputs[0];
|
||||
for (int i=1; i<count; ++i) {
|
||||
switch(opType) {
|
||||
case 0: val += inputs[i]; break; // ADD
|
||||
case 1: val *= inputs[i]; break; // MUL
|
||||
case 2: val -= inputs[i]; break; // SUB
|
||||
case 3: if(inputs[i]!=0) val /= inputs[i]; break; // DIV
|
||||
case 4: if(inputs[i]<val) val = inputs[i]; break; // MIN
|
||||
case 5: if(inputs[i]>val) val = inputs[i]; break; // MAX
|
||||
}
|
||||
for(int k=0; k<count; ++k) val += inputs[k];
|
||||
} else {
|
||||
// Operator
|
||||
int opType = (int)(c.param * 5.99f);
|
||||
if (count == 0) val = 0.0f;
|
||||
else {
|
||||
val = inputs[0];
|
||||
for (int i=1; i<count; ++i) {
|
||||
switch(opType) {
|
||||
case 0: val += inputs[i]; break; // ADD
|
||||
case 1: val *= inputs[i]; break; // MUL
|
||||
case 2: val -= inputs[i]; break; // SUB
|
||||
case 3: if(inputs[i]!=0) val /= inputs[i]; break; // DIV
|
||||
case 4: if(inputs[i]<val) val = inputs[i]; break; // MIN
|
||||
case 5: if(inputs[i]>val) val = inputs[i]; break; // MAX
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
next_values[x][y] = val;
|
||||
}
|
||||
}
|
||||
} // End of big switch
|
||||
c.next_value = val;
|
||||
} // End of for loop over _processing_order
|
||||
|
||||
// Update state
|
||||
for(int x=0; x < GRID_W; ++x) {
|
||||
for(int y=0; y < GRID_H; ++y) {
|
||||
grid[x][y].value = next_values[x][y];
|
||||
}
|
||||
// 2. Update current values from next values for active cells
|
||||
for (const auto& cell_coord : _processing_order) {
|
||||
int x = cell_coord.first;
|
||||
int y = cell_coord.second;
|
||||
grid[x][y].value = grid[x][y].next_value;
|
||||
}
|
||||
|
||||
return grid[GRID_W / 2][GRID_H - 1].value;
|
||||
|
||||
Reference in New Issue
Block a user