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@ -2,6 +2,8 @@ |
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#include <stdio.h> |
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#include <stdlib.h> |
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#include <string.h> |
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#include <queue> |
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#include <set> |
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#include <vector> |
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#include <cassert> |
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@ -223,7 +225,93 @@ State* state; |
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// Algoritmy
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// main (zde doplňte kód)
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// otoč směr podle jiného otočení
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Direction combine_directions(Direction a, Direction b) |
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{ |
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if (a == STAY || b == STAY) |
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{ |
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fprintf(stderr, "Nelze kombinovat se STAY."); |
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exit(1); |
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} |
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return (Direction) ((a + b) % 4); |
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} |
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// získej opačný směr
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Direction invert_direction(Direction a) |
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{ |
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if (a == STAY) return STAY; |
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return combine_directions(a, DOWN); |
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} |
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// další políčko v daném směru
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Field* get_neighbour_field(Field* f, Direction direction) |
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{ |
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int neighbour_i, neighbour_j; |
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switch (direction) |
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{ |
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case UP: |
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neighbour_i = f->i - 1; |
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neighbour_j = f->j; |
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break; |
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case DOWN: |
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neighbour_i = f->i + 1; |
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neighbour_j = f->j; |
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break; |
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case LEFT: |
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neighbour_i = f->i; |
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neighbour_j = f->j - 1; |
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break; |
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case RIGHT: |
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neighbour_i = f->i; |
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neighbour_j = f->j + 1; |
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break; |
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default: |
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neighbour_i = f->i; |
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neighbour_j = f->j; |
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} |
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// zajisti, aby souřadnice byly v rozsahu herní plochy
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neighbour_i %= state->world.size(); |
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neighbour_j %= state->world[0].size(); |
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return state->world[neighbour_i][neighbour_j]; |
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} |
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// jestli daný tým může vstoupit na políčko
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bool is_field_accessible(Field* f, Team* t) |
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{ |
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if (f->hill) return false; |
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if (f->occupied_by_team != NULL && f->occupied_by_team != t) return false; |
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return true; |
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} |
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// Najdi nejkratší cestu od vojáka k cílovému políčku.
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// Vrátí první krok, který má voják udělat.
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// Pokud žádná cesta neexistuje, vrátí STAY.
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Direction pathfind(Member* m, Field* goal) |
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{ |
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std::set<Field*> explored; |
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std::queue<Field*> queue; |
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queue.push(goal); |
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auto dirs = {UP, LEFT, DOWN, RIGHT}; |
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while (!queue.empty()) |
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{ |
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auto field = queue.front(); |
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queue.pop(); |
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for (auto direction : dirs) |
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{ |
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auto neighbour = get_neighbour_field(field, direction); |
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if (explored.find(neighbour) != explored.end()) continue; |
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if (!is_field_accessible(neighbour, m->team)) continue; |
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// pokud jsme našli vojáka, vrátíme první krok
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if (neighbour == m->field) return invert_direction(direction); |
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queue.push(neighbour); |
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explored.insert(neighbour); |
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} |
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} |
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return STAY; |
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} |
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// Strategie
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int main() |
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{ |
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@ -231,7 +319,7 @@ int main() |
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scanf("%m[^\n]", &input_str); |
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state = new State(input_str); |
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// TODO sem patří herní logika
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// TODO: zde doplňte svou herní strategii
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for(Member *m: state->my_team->members) |
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m->action = UP; |
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