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Systems now control most of the game's operations and a lot of the rendering logic, this now brings in a camera so maps can be larger than the viewport.

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Zed A. Shaw 2024-10-17 21:43:19 -04:00
parent e42647d727
commit da64e526c4
5 changed files with 62 additions and 36 deletions
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33
systems.cpp
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@ -1,4 +1,9 @@
#include "systems.hpp"
#include <fmt/core.h>
#include <string>
using std::string;
using namespace fmt;
void System::enemy_pathing(DinkyECS::World &world, Map &game_map, Player &player) {
// move enemies system
@ -38,9 +43,31 @@ void System::combat(DinkyECS::World &world, Player &player) {
});
};
void System::draw_entities(DinkyECS::World &world, ftxui::Canvas &canvas) {
void System::draw_entities(DinkyECS::World &world, Map &game_map, ftxui::Canvas &canvas, const Point &cam_orig, size_t view_x, size_t view_y) {
world.system<Position, Tile>([&](const auto &ent, auto &pos, auto &tile) {
canvas.DrawText(pos.location.x*2, pos.location.y*4, tile.chr);
if(pos.location.x >= cam_orig.x && pos.location.x <= cam_orig.x + view_x
&& pos.location.y >= cam_orig.y && pos.location.y <= cam_orig.y + view_y) {
Point loc = game_map.map_to_camera(pos.location, cam_orig);
canvas.DrawText(loc.x*2, loc.y*4, tile.chr);
}
});
}
void System::draw_map(DinkyECS::World &world, Map &game_map, ftxui::Canvas &canvas, size_t view_x, size_t view_y) {
const auto& player = world.get<Player>();
const auto& player_position = world.component<Position>(player.entity);
Point start = game_map.center_camera(player_position.location, view_x, view_y);
Matrix &walls = game_map.walls();
size_t end_x = std::min(view_x, game_map.width() - start.x);
size_t end_y = std::min(view_y, game_map.height() - start.y);
for(size_t x = 0; x < end_x; ++x) {
for(size_t y = 0; y < end_y; ++y) {
string tile = walls[start.y+y][start.x+x] == 1 ? WALL_TILE : FLOOR_TILE;
canvas.DrawText(x * 2, y * 4, tile);
}
}
System::draw_entities(world, game_map, canvas, start, view_x, view_y);
}