89 lines
2.7 KiB
C++
89 lines
2.7 KiB
C++
#include <memory>
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#include <thread>
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#include "gameloop.hpp"
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#include "log.hpp"
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#include "math.hpp"
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#include "pathfinder/base.hpp"
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#include "pathfindingdemo.hpp"
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#include "user_input.hpp"
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#include "window.hpp"
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void GameLoop::Draw() {
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// draw the map (terrain tiles)
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const Map &map = m_Game->GetMap();
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const auto &tiles = map.GetMapTiles();
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for (size_t row = 0; row < tiles.size(); row++) {
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for (size_t col = 0; col < tiles[row].size(); col++) {
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const auto &camera = m_Game->GetCamera();
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const auto &position = camera.WorldToWindow(map.TileEdgeToWorld(
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TilePos{static_cast<int32_t>(row), static_cast<int32_t>(col)}));
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const auto &size = camera.WorldToWindowSize(map.GetTileSize());
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// LOG_DEBUG("Drawing rect (", row, ", ", col, ")");
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m_Window->DrawFilledRect(position, size, tiles[row][col]->R, tiles[row][col]->G,
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tiles[row][col]->B, tiles[row][col]->A);
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}
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}
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// draw the path, if it exists
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for (const auto& entity : m_Game->GetEntities())
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{
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WorldPos start_pos = entity->GetPosition();
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for (const auto &next_pos : entity->GetPath())
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{
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const auto &camera = m_Game->GetCamera();
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m_Window->DrawLine(camera.WorldToWindow(start_pos),
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camera.WorldToWindow(next_pos));
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start_pos = next_pos;
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}
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}
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// draw all the entities (player etc)
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for (auto &entity : m_Game->GetEntities()) {
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const auto &camera = m_Game->GetCamera();
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auto entity_pos = camera.WorldToWindow(entity->GetPosition());
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m_Window->DrawSprite(entity_pos,
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entity->GetSprite(),
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camera.GetZoom());
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if (entity->IsCollisionBoxVisible())
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{
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float collision_radius = camera.WorldToWindowSize(entity->GetCollisionRadius());
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m_Window->DrawCircle(entity_pos, collision_radius, 255, 0, 0);
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}
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if (entity->IsSelected())
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{
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float collision_radius = camera.WorldToWindowSize(entity->GetCollisionRadius());
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m_Window->DrawCircle(entity_pos, collision_radius, 0, 255, 0);
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}
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}
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// draw the selection box, if present
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if (m_Game->IsSelectionBoxActive())
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{
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const auto& [corner_pos, size] = m_Game->GetSelectionBoxPosSize();
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m_Window->DrawRect(corner_pos, size, 200, 20, 20);
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}
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}
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// TODO rethink coupling and dependencies in the game loop class
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void GameLoop::Run() {
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LOG_INFO("Running the game");
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while (!m_Game->IsExitRequested()) {
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m_Game->HandleActions(m_UserInput->GetActions());
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m_Game->UpdateWorld();
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// TODO measure fps, draw only if delay for target fps was reached
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// or create a separate thread for drawing
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m_Window->ClearWindow();
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Draw();
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m_Window->Flush();
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std::this_thread::sleep_for(std::chrono::milliseconds(30));
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}
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}
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