From bd24f87e18bef29679023ee9a60028f2afdbb470 Mon Sep 17 00:00:00 2001 From: jaroWMR Date: Tue, 1 Oct 2024 19:10:24 +0200 Subject: particle POC --- src/crepe/CMakeLists.txt | 6 +- src/crepe/Particle.cpp | 14 +++ src/crepe/Particle.hpp | 19 +++ src/crepe/ParticleEmitter.cpp | 40 ++++++ src/crepe/ParticleEmitter.hpp | 28 +++++ .../CMakeFiles/CMakeDirectoryInformation.cmake | 16 +++ src/crepe/crepe/CMakeFiles/progress.marks | 1 + src/crepe/crepe/Makefile | 140 +++++++++++++++++++++ src/crepe/crepe/cmake_install.cmake | 44 +++++++ src/crepe/main.cpp | 84 ++++++++++++- 10 files changed, 389 insertions(+), 3 deletions(-) create mode 100644 src/crepe/Particle.cpp create mode 100644 src/crepe/Particle.hpp create mode 100644 src/crepe/ParticleEmitter.cpp create mode 100644 src/crepe/ParticleEmitter.hpp create mode 100644 src/crepe/crepe/CMakeFiles/CMakeDirectoryInformation.cmake create mode 100644 src/crepe/crepe/CMakeFiles/progress.marks create mode 100644 src/crepe/crepe/Makefile create mode 100644 src/crepe/crepe/cmake_install.cmake (limited to 'src/crepe') 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(velocity.x * deltaTime); + position.y += static_cast(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(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(randFloat(-50.0f, 50.0f, 10.0f, 100.0f)), + static_cast(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(rand()) / RAND_MAX * (maxangle - minangle) + minangle; + float velocity = static_cast(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 +#include +#include +#include "Particle.hpp" +#include + +class ParticleEmitter { +public: + std::vector 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 @@ +# CMAKE generated file: DO NOT EDIT! +# Generated by "Unix Makefiles" Generator, CMake Version 3.28 + +# Relative path conversion top directories. +set(CMAKE_RELATIVE_PATH_TOP_SOURCE "/home/jaro/crepe/src") +set(CMAKE_RELATIVE_PATH_TOP_BINARY "/home/jaro/crepe/src/crepe") + +# Force unix paths in dependencies. +set(CMAKE_FORCE_UNIX_PATHS 1) + + +# The C and CXX include file regular expressions for this directory. +set(CMAKE_C_INCLUDE_REGEX_SCAN "^.*$") +set(CMAKE_C_INCLUDE_REGEX_COMPLAIN "^$") +set(CMAKE_CXX_INCLUDE_REGEX_SCAN ${CMAKE_C_INCLUDE_REGEX_SCAN}) +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 --- /dev/null +++ b/src/crepe/crepe/CMakeFiles/progress.marks @@ -0,0 +1 @@ +0 diff --git a/src/crepe/crepe/Makefile b/src/crepe/crepe/Makefile new file mode 100644 index 0000000..094215a --- /dev/null +++ b/src/crepe/crepe/Makefile @@ -0,0 +1,140 @@ +# CMAKE generated file: DO NOT EDIT! +# Generated by "Unix Makefiles" Generator, CMake Version 3.28 + +# Default target executed when no arguments are given to make. +default_target: all +.PHONY : default_target + +# Allow only one "make -f Makefile2" at a time, but pass parallelism. +.NOTPARALLEL: + +#============================================================================= +# Special targets provided by cmake. + +# Disable implicit rules so canonical targets will work. +.SUFFIXES: + +# Disable VCS-based implicit rules. +% : %,v + +# Disable VCS-based implicit rules. +% : RCS/% + +# Disable VCS-based implicit rules. +% : RCS/%,v + +# Disable VCS-based implicit rules. +% : SCCS/s.% + +# Disable VCS-based implicit rules. +% : s.% + +.SUFFIXES: .hpux_make_needs_suffix_list + +# Command-line flag to silence nested $(MAKE). +$(VERBOSE)MAKESILENT = -s + +#Suppress display of executed commands. +$(VERBOSE).SILENT: + +# A target that is always out of date. +cmake_force: +.PHONY : cmake_force + 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cleanup operation of make. + +# Special rule to run CMake to check the build system integrity. +# No rule that depends on this can have commands that come from listfiles +# because they might be regenerated. +cmake_check_build_system: + cd /home/jaro/crepe/src/crepe && $(CMAKE_COMMAND) -S$(CMAKE_SOURCE_DIR) -B$(CMAKE_BINARY_DIR) --check-build-system CMakeFiles/Makefile.cmake 0 +.PHONY : cmake_check_build_system + diff --git a/src/crepe/crepe/cmake_install.cmake b/src/crepe/crepe/cmake_install.cmake new file mode 100644 index 0000000..cd57803 --- /dev/null +++ b/src/crepe/crepe/cmake_install.cmake @@ -0,0 +1,44 @@ +# Install script for directory: /home/jaro/crepe/src/crepe + +# Set the install prefix +if(NOT DEFINED CMAKE_INSTALL_PREFIX) + set(CMAKE_INSTALL_PREFIX "/usr/local") +endif() +string(REGEX REPLACE "/$" "" CMAKE_INSTALL_PREFIX "${CMAKE_INSTALL_PREFIX}") + +# Set the install configuration name. +if(NOT DEFINED CMAKE_INSTALL_CONFIG_NAME) + if(BUILD_TYPE) + string(REGEX REPLACE "^[^A-Za-z0-9_]+" "" + CMAKE_INSTALL_CONFIG_NAME "${BUILD_TYPE}") + else() + set(CMAKE_INSTALL_CONFIG_NAME "Debug") + endif() + message(STATUS "Install configuration: \"${CMAKE_INSTALL_CONFIG_NAME}\"") +endif() + +# Set the component getting installed. +if(NOT CMAKE_INSTALL_COMPONENT) + if(COMPONENT) + message(STATUS "Install component: \"${COMPONENT}\"") + set(CMAKE_INSTALL_COMPONENT "${COMPONENT}") + else() + set(CMAKE_INSTALL_COMPONENT) + endif() +endif() + +# Install shared libraries without execute permission? +if(NOT DEFINED CMAKE_INSTALL_SO_NO_EXE) + set(CMAKE_INSTALL_SO_NO_EXE "1") +endif() + +# Is this installation the result of a crosscompile? +if(NOT DEFINED CMAKE_CROSSCOMPILING) + set(CMAKE_CROSSCOMPILING "FALSE") +endif() + +# Set default install directory permissions. +if(NOT DEFINED CMAKE_OBJDUMP) + set(CMAKE_OBJDUMP "/usr/bin/objdump") +endif() + 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 +#include +#include +#include +#include +#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; +} -- cgit v1.2.3