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#include "Randomizer2.h"
#include "Puzzle.h"
#include "Random.h"
#include "Solver.h"
#include "Memory.h"
void FloodFillInternal(const Puzzle& p, std::vector<std::vector<bool>>& reached, int x, int y) {
if (x%2 == 1 && y%2 == 1) return;
auto cell = p.GetCell(x, y);
if (cell.undefined) return;
if (cell.gap != Cell::Gap::NONE) return;
if (reached[x][y]) return;
reached[x][y] = true;
FloodFillInternal(p, reached, x-1, y);
FloodFillInternal(p, reached, x+1, y);
FloodFillInternal(p, reached, x, y-1);
FloodFillInternal(p, reached, x, y+1);
}
// Returns true: All nodes reachable / false: Some node disconnected
bool FloodFill(const Puzzle& p) {
std::vector<std::vector<bool>> reached;
reached.resize(p.width);
for (int x=0; x<p.width; x++) reached[x].resize(p.height);
FloodFillInternal(p, reached, 0, 0);
for (int x=0; x<p.width; x++) {
for (int y=0; y<p.height; y++) {
if (x%2 == 0 && y%2 == 0) { // @Specialized
if (!reached[x][y]) return false;
}
}
}
return true;
}
Randomizer2::Randomizer2(const std::shared_ptr<Memory>& memory) : _memory(memory) {}
void Randomizer2::Randomize() {
// 4x4
// 14 gaps
// start (x=0, y=8)
// end (x=8, y=0) Up
// 1 solution
Puzzle p;
while (true) {
p.NewGrid(4, 4);
std::vector<Pos> corners;
std::vector<Pos> cells;
std::vector<Pos> edges;
for (int x=0; x<p.width; x++) {
for (int y=0; y<p.height; y++) {
if (x%2 == 0 && y%2 == 0) corners.emplace_back(Pos{x, y});
else if (x%2 == 1 && y%2 == 1) cells.emplace_back(Pos{x, y});
else edges.emplace_back(Pos{x, y});
}
}
for (int i=0; i<14; i++) {
for (int j=0; j<edges.size(); j++) {
int edge = Random::RandInt(0, static_cast<int>(edges.size() - 1));
Pos pos = edges[edge];
p.grid[pos.x][pos.y].gap = Cell::Gap::FULL;
edges.erase(edges.begin() + edge);
if (FloodFill(p)) {
break;
} else {
p.grid[pos.x][pos.y].gap = Cell::Gap::NONE;
}
}
}
p.grid[0][8].start = true;
p.grid[8][0].end = Cell::Dir::UP;
auto solutions = Solver::Solve(p);
if (solutions.size() > 0) break;
}
PuzzleSerializer(_memory).WritePuzzle(p, 0x293);
// 7x7
// 35 gaps
// start (x=8, y=8)
// end (x=4, y=0) Up
// 2 solutions, 37 & 39
while (true) {
p.NewGrid(7, 7);
std::vector<Pos> corners;
std::vector<Pos> cells;
std::vector<Pos> edges;
for (int x=0; x<p.width; x++) {
for (int y=0; y<p.height; y++) {
if (x%2 == 0 && y%2 == 0) corners.emplace_back(Pos{x, y});
else if (x%2 == 1 && y%2 == 1) cells.emplace_back(Pos{x, y});
else edges.emplace_back(Pos{x, y});
}
}
for (int i=0; i<35; i++) {
for (int j=0; j<edges.size(); j++) {
// TODO: Precompute edge weights and make a weighted cut.
// This will also preclude the need for flood filling.
// https://en.wikipedia.org/wiki/Biconnected_component
int edge = Random::RandInt(0, static_cast<int>(edges.size() - 1));
Pos pos = edges[edge];
p.grid[pos.x][pos.y].gap = Cell::Gap::FULL;
edges.erase(edges.begin() + edge);
if (FloodFill(p)) {
break;
} else {
p.grid[pos.x][pos.y].gap = Cell::Gap::NONE;
}
}
}
switch (Random::RandInt(1, 4)) {
case 1:
p.grid[Random::RandInt(0, p.width-1)][0].end = Cell::Dir::UP;
break;
case 2:
p.grid[Random::RandInt(0, p.width-1)][p.height-1].end = Cell::Dir::DOWN;
break;
case 3:
p.grid[0][Random::RandInt(0, p.height-1)].end = Cell::Dir::LEFT;
break;
case 4:
p.grid[p.width-1][Random::RandInt(0, p.height-1)].end = Cell::Dir::RIGHT;
break;
}
switch (Random::RandInt(1, 3)) {
case 1: // Horiz (6) [5/7][4/6/8]
p.grid[Random::RandInt(0, 1)*2 + 5][Random::RandInt(0, 2)*2 + 4].start = true;
break;
case 2: // Verti (6) [4/6/8][5/7]
p.grid[Random::RandInt(0, 2)*2 + 4][Random::RandInt(0, 1)*2 + 5].start = true;
break;
case 3: // Inter (9) [4/6/8][4/6/8]
p.grid[Random::RandInt(0, 2)*2 + 4][Random::RandInt(0, 2)*2 + 4].start = true;
break;
}
auto solutions = Solver::Solve(p);
if (solutions.size() > 0) break;
}
PuzzleSerializer(_memory).WritePuzzle(p, 0x295);
}
void Randomizer2::RandomizeKeep() {
Puzzle p;
p.width = 9;
p.height = 10;
p.grid.clear();
p.grid.resize(p.width);
for (int x=0; x<p.width; x++) p.grid[x].resize(p.height);
p.NewGrid(5, 5);
p.grid[2][1].gap = Cell::Gap::FULL;
p.grid[4][1].gap = Cell::Gap::FULL;
p.grid[6][1].gap = Cell::Gap::FULL;
p.grid[8][1].gap = Cell::Gap::FULL;
p.grid[3][2].gap = Cell::Gap::FULL;
p.grid[5][2].gap = Cell::Gap::FULL;
p.grid[8][3].gap = Cell::Gap::FULL;
p.grid[2][5].gap = Cell::Gap::FULL;
p.grid[6][5].gap = Cell::Gap::FULL;
p.grid[7][6].gap = Cell::Gap::FULL;
p.grid[2][7].gap = Cell::Gap::FULL;
p.grid[4][7].gap = Cell::Gap::FULL;
p.grid[0][9].gap = Cell::Gap::FULL;
p.grid[2][9].gap = Cell::Gap::FULL;
p.grid[6][9].gap = Cell::Gap::FULL;
p.grid[8][9].gap = Cell::Gap::FULL;
p.grid[8][0].end = Cell::Dir::UP;
p.grid[4][9].start = true;
// 0x00496
// 0x00344
// 0x00495
// 0x00488
// 0x00489
SetGate(0x00496, 2, 1);
}
void Randomizer2::SetGate(int panel, int X, int Y) {
// x: (-1.5)X + (0.7)Y + 67.1
// y: (0.3)X + (1.5)Y + 106.9
// z: -19.1
// Horizontal: (0, 0, -.1, 1)
// Vertical: (0, 0, -.77, .63)
float x = -1.5f * X + 0.7f * Y + 67.1f;
float y = 0.3f * X + 1.5f * Y + 106.9f;
_memory->WritePanelData<float>(panel, POSITION, {x, y, 19.1f});
float z, w;
if (X%2 == 0 && Y%2 == 1) { // Horizontal
z = -0.1f;
w = 1.0f;
} else if (X%2 == 1 && Y%2 == 0) { // Vertical
z = -.77f;
w = .63f;
} else {
assert(false);
return;
}
_memory->WritePanelData<float>(panel, ORIENTATION, {0.0f, 0.0f, z, w});
}
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