ParticleEmitterComponent.hpp

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#pragma once
#include "components/AssetTypes.hpp"
#include "components/ColorTypes.hpp"
#include <glm/vec2.hpp>
#include <glm/vec3.hpp>
#include <vector>
 
namespace vex {

    struct alignas(16) ParticleGPUData {
        glm::vec4 position; 
        float scaleX;       
        float scaleY;       
        uint32_t textureID; 
        uint32_t isUnlit;   
        glm::vec4 color;    
    };
 
 

    struct Particle {
        glm::vec3 position = glm::vec3(0.0f); 
        glm::vec3 velocity = glm::vec3(0.0f); 
        vex::rgba color = vex::rgba(1.0f, 1.0f, 1.0f, 1.0f); 
        vex::rgba startColor = vex::rgba(1.0f, 1.0f, 1.0f, 1.0f); 
        vex::rgba endColor = vex::rgba(1.0f, 1.0f, 1.0f, 0.0f); 
        float startSize = 1.0f; 
        float endSize = 0.0f;   
        float life = 0.0f;      
        float startingLife = 1.0f; 
    };

    struct ParticleEmitterComponent {
        vex::texture_asset_path texturePath; 
        bool isTransparent = true;  
        bool isUnlit = true;        
        bool active = true;         
        float spawnRate = 0.1f;     
        float spawnTimer = 0.0f;    
        glm::vec3 gravity = glm::vec3(0.0f, -9.81f, 0.0f); 
        glm::vec3 initialVelocity = glm::vec3(0.0f, 5.0f, 0.0f); 
        glm::vec3 velocityVariation = glm::vec3(2.0f, 2.0f, 2.0f); 
        float particleLife = 3.0f;  
        float particleLifeVariation = 0.5f; 
        float startSize = 1.0f;     
        float endSize = 0.0f;       
        vex::rgba startColor = vex::rgba(1.0f, 1.0f, 1.0f, 1.0f); 
        vex::rgba endColor = vex::rgba(1.0f, 1.0f, 1.0f, 0.0f);   
        std::vector<Particle> cpuParticles; 
        std::vector<ParticleGPUData> activeParticles; 
    };
 
}