94 lines
3.2 KiB
C++
94 lines
3.2 KiB
C++
#include "components/SpawnComponent.hpp"
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#include "Entities.hpp"
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#include "Entity.hpp"
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#include "components/CollectibleComponent.hpp"
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#include "components/HazardComponent.hpp"
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#include "components/NullZoneComponent.hpp"
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#include "components/ScrollComponent.hpp"
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#include "components/ScrollableComponent.hpp"
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#include "components/TransformComponent.hpp"
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#include "raylib.h"
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#include <algorithm>
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void SpawnComponent::Setup() {
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// Start a bit beyond the initial handcrafted segment.
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cursorWX = 1500.0f;
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}
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void SpawnComponent::Update(float) {
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if (!context || !context->entities) {
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return;
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}
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auto scroll = entity->GetComponent<ScrollComponent>();
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if (!scroll) {
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return;
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}
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const float cameraX = scroll->get().scrollX;
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const float spawnLimit = cameraX + spawnAheadDistance;
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// 70% stars, 20% asteroids, 5% null zones, 5% hazards -> keeps early play mostly collectible
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while (cursorWX < spawnLimit) {
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const float r = static_cast<float>(GetRandomValue(0, 99));
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if (r < 70.0f) {
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const float y = static_cast<float>(GetRandomValue(48, GetScreenHeight() - 48));
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auto star = CreateStar(cursorWX, y);
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star->SetContext(context);
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context->entities->push_back(star);
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} else if (r < 90.0f) {
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const float y = static_cast<float>(GetRandomValue(42, GetScreenHeight() - 42));
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auto asteroid = CreateAsteroid(cursorWX, y);
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asteroid->SetContext(context);
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context->entities->push_back(asteroid);
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} else if (r < 95.0f) {
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const float width = static_cast<float>(GetRandomValue(70, 140));
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auto zone = CreateNullZone(cursorWX, width);
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zone->SetContext(context);
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context->entities->push_back(zone);
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} else {
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const float y = static_cast<float>(GetRandomValue(42, GetScreenHeight() - 42));
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auto blackHole = CreateBlackHole(cursorWX, y);
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blackHole->SetContext(context);
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context->entities->push_back(blackHole);
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}
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const float gap =
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static_cast<float>(GetRandomValue(static_cast<int>(minGap), static_cast<int>(maxGap)));
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cursorWX += gap;
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}
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const float cullX = cameraX - despawnBehindDistance;
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for (auto &candidate : *context->entities) {
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if (!candidate || candidate.get() == entity || candidate->queuedForFree) {
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continue;
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}
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const bool isSpawnedGameplayObject =
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candidate->GetComponent<CollectibleComponent>().has_value() ||
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candidate->GetComponent<HazardComponent>().has_value() ||
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candidate->GetComponent<NullZoneComponent>().has_value();
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if (!isSpawnedGameplayObject) {
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continue;
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}
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auto scrollable = candidate->GetComponent<ScrollableComponent>();
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if (scrollable) {
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if (scrollable->get().worldX < cullX) {
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candidate->QueueFree();
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}
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continue;
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}
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auto transform = candidate->GetComponent<TransformComponent>();
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if (transform && transform->get().x < cullX) {
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candidate->QueueFree();
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}
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}
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}
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void SpawnComponent::Cleanup() {}
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