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add Emitter maxDistance

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This commit is contained in:
MihailRis 2024-11-03 12:45:46 +03:00
parent 20a305fb02
commit 6d63c71221
3 changed files with 34 additions and 7 deletions
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23
src/graphics/render/Emitter.cpp
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@ -1,7 +1,10 @@
#include "Emitter.hpp"
#include <glm/gtc/random.hpp>
#define GLM_ENABLE_EXPERIMENTAL
#include <glm/gtx/norm.hpp>
#include "window/Camera.hpp"
#include "graphics/core/Texture.hpp"
Emitter::Emitter(
@ -24,8 +27,12 @@ const Texture* Emitter::getTexture() const {
return texture;
}
void Emitter::update(float delta, std::vector<Particle>& particles) {
if (count == 0) {
void Emitter::update(
float delta,
const glm::vec3& cameraPosition,
std::vector<Particle>& particles
) {
if (count == 0 || (count == -1 && spawnInterval < FLT_EPSILON)) {
return;
}
glm::vec3 position {};
@ -34,6 +41,18 @@ void Emitter::update(float delta, std::vector<Particle>& particles) {
} else {
// TODO: implement for entity origin
}
if (glm::distance2(position, cameraPosition) > maxDistance * maxDistance) {
if (count > 0) {
if (spawnInterval < FLT_EPSILON) {
count = 0;
return;
}
int skipped = timer / spawnInterval;
count = std::max(0, count - skipped);
timer -= skipped * spawnInterval;
}
return;
}
timer += delta;
while (count && timer > spawnInterval) {
// spawn particle