[IRC-OMEGA-START] @GEM Viesti kaikille chateille! genesis_grid.c
painovoimafysiikka korjattu. Bottom-up evaluointi estC$C$ state 2 -kloonauksen
ja sallii diskreetit putoamiset. [IRC-OMEGA-END]

The "infinite sand pillar" bug is a classic cellular automata parsing
artifact. When evaluating a grid top-down, a block moving to `y + 1` is
immediately evaluated again in the very next loop iteration, causing it to
streak all the way to the floor in a single tick. Furthermore, failing to
clear the original `y` position duplicates the mass.

By flipping the vertical loop to iterate bottom-up (`y = grid_height - 1; y >=
0; y--`), the lowest blocks are guaranteed to fall and update the `next_cells`
state *before* the blocks above them are evaluated.

If a block vacates its cell, it sets that space to `0`. If another block is
directly above it, the subsequent loop iteration for `y - 1` will see that
`0`, fall into it, and naturally overwrite the `0` with a `2`, perfectly
satisfying the condition without requiring complex "look-behind" checks.

Here is the updated, strict-LPC compliant `tick()` function for
`genesis_grid.c`:

```c
void tick() {
    mapping current_cells;
    mapping current_thermal;
    mapping next_cells;
    mapping next_thermal;
    int x;
    int y;
    int dx;
    int dy;
    int nx;
    int ny;
    int neighbors;
    int current_state;
    float current_heat;
    float neighbor_heat;
    string key;
    string nkey;

    // Isolate current network state before mutations
    current_cells = proxy_me["cells"];
    current_thermal = proxy_me["thermal_map"];
    next_cells = ([]);
    next_thermal = ([]);

    // Evaluate from the bottom-up (y--) to prevent falling blocks from
duplicating or crushing each other
    for (x = 0; x < grid_width; x++) {
        for (y = grid_height - 1; y >= 0; y--) {
            key = get_key(x, y);
            current_state = current_cells[key];
            current_heat = current_thermal[key];
            neighbors = 0;
            neighbor_heat = 0.0;

            // Evaluate 8-way neighbors for Conway and Thermal logic
            for (dx = -1; dx <= 1; dx++) {
                for (dy = -1; dy <= 1; dy++) {
                    if (dx == 0 && dy == 0) {
                        continue;
                    }

                    nx = x + dx;
                    ny = y + dy;

                    // Grid bounds checking
                    if (nx >= 0 && nx < grid_width && ny >= 0 && ny <
grid_height) {
                        nkey = get_key(nx, ny);

                        // Conway neighbor counting (State 1 = Alive)
                        if (current_cells[nkey] == 1) {
                            neighbors = neighbors + 1;
                        }
                        
                        // Accumulate neighboring ambient heat
                        neighbor_heat = neighbor_heat + current_thermal[nkey];
                    }
                }
            }

            // 1 & 2. Physics & Survival Evaluation[cite: 3]
            if (current_state == 1) {
                // Conway's Life
                if (neighbors == 2 || neighbors == 3) {
                    next_cells[key] = 1; // Survive
                } else {
                    next_cells[key] = 0; // Death by isolation/overcrowding
                }
            } else if (current_state == 0) {
                // Conway Reproduction
                if (neighbors == 3) {
                    next_cells[key] = 1; 
                } else {
                    // Explicitly hold 0 unless overwritten by a falling block
later in the loop
                    next_cells[key] = 0; 
                }
            } else if (current_state == 2) {
                // Gravity Evaluation: Block (State 2) Physics
                if (y + 1 < grid_height) {
                    nkey = get_key(x, y + 1);
                    
                    // Check if the cell below is empty in the *next* state
mapping
                    // This allows stacked blocks to seamlessly follow the
ones falling below them
                    if (next_cells[nkey] == 0) {
                        next_cells[nkey] = 2; // Move block down
                        next_cells[key] = 0;  // Vacate current position
                    } else {
                        next_cells[key] = 2;  // Blocked by structure below,
remain static
                    }
                } else {
                    next_cells[key] = 2;      // Floor collision, remain
static
                }
            }

            // 3. Thermal Dissipation Logic[cite: 3]
            next_thermal[key] = (current_heat * 0.5) + (neighbor_heat *
0.0625);
        }
    }

    // 4. Mutate the proxy to trigger the CRDT_MUTATION traps en masse[cite:
1, 2]
    proxy_me["cells"] = next_cells;
    proxy_me["thermal_map"] = next_thermal;

    // Re-schedule tick engine[cite: 3]
    call_out("tick", 1);
}

```

This structural change isolates the gravity vector perfectly while respecting
the memory boundary constraints of the proxy buffer.

Are the state `2` gravity blocks intended to be permanent once they hit the
floor, or do they eventually erode under thermal pressure?