particle POC

11 files changed, 394 insertions, 5 deletions

diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
index 0090188..b8ed359 100644
--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@@ -4,13 +4,16 @@ set(CMAKE_C_STANDARD 11)
 set(CMAKE_CXX_STANDARD 20)
 set(CMAKE_EXPORT_COMPILE_COMMANDS 1)
 
-# enable debug features
 set(CMAKE_BUILD_TYPE Debug)
 add_compile_definitions(DEBUG)
 
 project(crepe C CXX)
 
+find_package(SDL2 REQUIRED)
+include_directories(${SDL2_INCLUDE_DIRS})
+
 add_executable(main)
 
-add_subdirectory(crepe)
+target_link_libraries(main ${SDL2_LIBRARIES})
 
+add_subdirectory(crepe)
\ No newline at end of file
diff --git a/src/crepe/CMakeLists.txt b/src/crepe/CMakeLists.txt
index 392b7d7..c825529 100644
--- a/src/crepe/CMakeLists.txt
+++ b/src/crepe/CMakeLists.txt
@@ -1,3 +1,7 @@
 target_sources(main PUBLIC
-	main.cpp
+    main.cpp
+	Particle.cpp
+	ParticleEmitter.cpp
 )
+
+target_include_directories(main PUBLIC ${CMAKE_CURRENT_SOURCE_DIR})
diff --git a/src/crepe/Particle.cpp b/src/crepe/Particle.cpp
new file mode 100644
index 0000000..90957db
--- /dev/null
+++ b/src/crepe/Particle.cpp
@@ -0,0 +1,14 @@
+#include "Particle.hpp"
+
+Particle::Particle(float lifespan, Position position, Position velocity)
+    : lifespan(lifespan), position(position), velocity(velocity), timeInLife(0.0f) {}
+
+void Particle::update(float deltaTime) {
+    timeInLife += deltaTime;
+    position.x += static_cast<int>(velocity.x * deltaTime);
+    position.y += static_cast<int>(velocity.y * deltaTime);
+}
+
+bool Particle::isAlive() const {
+    return timeInLife < lifespan;
+}
diff --git a/src/crepe/Particle.hpp b/src/crepe/Particle.hpp
new file mode 100644
index 0000000..f8d2770
--- /dev/null
+++ b/src/crepe/Particle.hpp
@@ -0,0 +1,19 @@
+#pragma once
+
+class Particle {
+public:
+    struct Position {
+        int x;
+        int y;
+    };
+
+    Position position;
+    Position velocity;
+    float lifespan;
+
+    Particle(float lifespan, Position position, Position velocity);
+    void update(float deltaTime);
+    bool isAlive() const;
+private:
+    float timeInLife;
+};
diff --git a/src/crepe/ParticleEmitter.cpp b/src/crepe/ParticleEmitter.cpp
new file mode 100644
index 0000000..13aaeae
--- /dev/null
+++ b/src/crepe/ParticleEmitter.cpp
@@ -0,0 +1,40 @@
+#include "ParticleEmitter.hpp"
+
+ParticleEmitter::ParticleEmitter(int maxParticles, float emissionRate)
+    : maxParticles(maxParticles), emissionRate(emissionRate), elapsedTime(0.0f) {
+    position = { 0, 0 };  
+    std::srand(static_cast<unsigned int>(std::time(nullptr))); /
+}
+
+void ParticleEmitter::update(float deltaTime) {
+    elapsedTime += deltaTime;
+
+    while (elapsedTime >= (1.0f / emissionRate) && particles.size() < maxParticles) {
+        elapsedTime -= (1.0f / emissionRate);
+        emitParticle();
+    }
+
+    for (auto it = particles.begin(); it != particles.end();) {
+        it->update(deltaTime);
+        if (!it->isAlive()) {
+            it = particles.erase(it); 
+        } else {
+            ++it;
+        }
+    }
+}
+
+void ParticleEmitter::emitParticle() {
+    Particle::Position initialPosition = { position.x, position.y };
+    Particle::Position initialVelocity = {
+        static_cast<int>(randFloat(-50.0f, 50.0f, 10.0f, 100.0f)), 
+        static_cast<int>(randFloat(-50.0f, 50.0f, 10.0f, 100.0f))
+    };
+    particles.emplace_back(2.0f, initialPosition, initialVelocity); 
+}
+
+float ParticleEmitter::randFloat(float minangle, float maxangle, float minVel, float maxVel) {
+    float angle = static_cast<float>(rand()) / RAND_MAX * (maxangle - minangle) + minangle;
+    float velocity = static_cast<float>(rand()) / RAND_MAX * (maxVel - minVel) + minVel;
+    return velocity * std::cos(angle); 
+}
diff --git a/src/crepe/ParticleEmitter.hpp b/src/crepe/ParticleEmitter.hpp
new file mode 100644
index 0000000..682a2ae
--- /dev/null
+++ b/src/crepe/ParticleEmitter.hpp
@@ -0,0 +1,28 @@
+#pragma once
+
+#include <vector>
+#include <cstdlib>  
+#include <ctime>   
+#include "Particle.hpp"
+#include <cmath>
+
+class ParticleEmitter {
+public:
+    std::vector<Particle> particles;
+
+    struct Position {
+        int x;
+        int y;
+    } position;
+
+    int maxParticles;
+    float emissionRate;
+    float elapsedTime;
+
+    ParticleEmitter(int maxParticles, float emissionRate);
+    void update(float deltaTime);
+
+private:
+    void emitParticle();
+    float randFloat(float minangle, float maxangle, float minVel, float maxVel);
+};
diff --git a/src/crepe/crepe/CMakeFiles/CMakeDirectoryInformation.cmake b/src/crepe/crepe/CMakeFiles/CMakeDirectoryInformation.cmake
new file mode 100644
index 0000000..8d03506
--- /dev/null
+++ b/src/crepe/crepe/CMakeFiles/CMakeDirectoryInformation.cmake
@@ -0,0 +1,16 @@
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+
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+
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+
+
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+set(CMAKE_CXX_INCLUDE_REGEX_COMPLAIN ${CMAKE_C_INCLUDE_REGEX_COMPLAIN})
diff --git a/src/crepe/crepe/CMakeFiles/progress.marks b/src/crepe/crepe/CMakeFiles/progress.marks
new file mode 100644
index 0000000..573541a
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+++ b/src/crepe/crepe/CMakeFiles/progress.marks
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new file mode 100644
index 0000000..094215a
--- /dev/null
+++ b/src/crepe/crepe/Makefile
@@ -0,0 +1,140 @@
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+SHELL = /bin/sh
+
+# The CMake executable.
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+# The command to remove a file.
+RM = /usr/bin/cmake -E rm -f
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+#=============================================================================
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new file mode 100644
index 0000000..cd57803
--- /dev/null
+++ b/src/crepe/crepe/cmake_install.cmake
@@ -0,0 +1,44 @@
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+
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+  endif()
+  message(STATUS "Install configuration: \"${CMAKE_INSTALL_CONFIG_NAME}\"")
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+
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diff --git a/src/crepe/main.cpp b/src/crepe/main.cpp
index 8e9a184..73d041c 100644
--- a/src/crepe/main.cpp
+++ b/src/crepe/main.cpp
@@ -1,3 +1,83 @@
-#include <stdio.h>
+#include <iostream>
+#include <thread>
+#include <chrono>
+#include <SDL.h>
+#include "ParticleEmitter.hpp"
 
-int main() { printf("Hello World!\n"); }
+const int WINDOW_WIDTH = 800;
+const int WINDOW_HEIGHT = 600;
+
+void renderParticles(SDL_Renderer* renderer, const ParticleEmitter& emitter) {
+    for (const auto& particle : emitter.particles) {
+        SDL_SetRenderDrawColor(renderer, 255, 255, 255, 255); 
+        SDL_Rect rect = { particle.position.x, particle.position.y, 5, 5 }; 
+        SDL_RenderFillRect(renderer, &rect);
+    }
+}
+
+int main(int argc, char* argv[]) {
+  
+    if (SDL_Init(SDL_INIT_VIDEO) != 0) {
+        std::cerr << "SDL Initialization Error: " << SDL_GetError() << std::endl;
+        return 1;
+    }
+
+    SDL_Window* window = SDL_CreateWindow("Particle System",
+                                          SDL_WINDOWPOS_CENTERED,
+                                          SDL_WINDOWPOS_CENTERED,
+                                          WINDOW_WIDTH,
+                                          WINDOW_HEIGHT,
+                                          SDL_WINDOW_SHOWN);
+    if (!window) {
+        std::cerr << "Window Creation Error: " << SDL_GetError() << std::endl;
+        SDL_Quit();
+        return 1;
+    }
+
+    // Create SDL renderer
+    SDL_Renderer* renderer = SDL_CreateRenderer(window, -1, SDL_RENDERER_ACCELERATED);
+    if (!renderer) {
+        std::cerr << "Renderer Creation Error: " << SDL_GetError() << std::endl;
+        SDL_DestroyWindow(window);
+        SDL_Quit();
+        return 1;
+    }
+
+    ParticleEmitter emitter(100, 10.0f);
+    emitter.position = { 400, 300 };
+    ParticleEmitter emitter2(100, 10.0f);
+    emitter2.position = { 600, 600 }; 
+
+    float deltaTime = 0.1f;
+
+    bool running = true;
+    SDL_Event event;
+    while (running) {
+
+        while (SDL_PollEvent(&event)) {
+            if (event.type == SDL_QUIT) {
+                running = false;
+            }
+        }
+
+        emitter.update(deltaTime);
+        emitter2.update(deltaTime);
+
+        SDL_SetRenderDrawColor(renderer, 0, 0, 0, 255); 
+        SDL_RenderClear(renderer);
+
+        renderParticles(renderer, emitter);
+        renderParticles(renderer, emitter2);
+
+        SDL_RenderPresent(renderer);
+
+        
+    }
+
+  
+    SDL_DestroyRenderer(renderer);
+    SDL_DestroyWindow(window);
+    SDL_Quit();
+
+    return 0;
+}