diff options
Diffstat (limited to 'src/render.cpp')
| -rw-r--r-- | src/render.cpp | 36 |
1 files changed, 30 insertions, 6 deletions
diff --git a/src/render.cpp b/src/render.cpp index 5ae2c15..9965b8f 100644 --- a/src/render.cpp +++ b/src/render.cpp @@ -25,8 +25,8 @@ #include <components/Light.hpp> #include <components/Script.hpp> -void RenderSystem::configure([[maybe_unused]] entityx::EntityManager& entities, - [[maybe_unused]] entityx::EventManager& events) +void RenderSystem::configure(entityx::EntityManager&, + entityx::EventManager& events) { events.subscribe<NewRenderEvent>(*this); events.subscribe<DelRenderEvent>(*this); @@ -40,9 +40,33 @@ void RenderSystem::configure([[maybe_unused]] entityx::EntityManager& entities, init(); } -void RenderSystem::update([[maybe_unused]] entityx::EntityManager& entities, - [[maybe_unused]] entityx::EventManager& events, - [[maybe_unused]] entityx::TimeDelta dt) +float RenderSystem::getWorldViewWidth() const +{ + return camPos.z * height / width * 2.0; +} + +float RenderSystem::getWorldViewHeight() const +{ + return getWorldViewWidth() * height / width; +} + +Position RenderSystem::uiToWorldCoord(float x, float y) const +{ + glm::vec2 scaled; + scaled.x = x / width - 0.5; + scaled.y = y / height - 0.5; + + Position world; + world.x = scaled.x * getWorldViewWidth() + camPos.x; + world.y = scaled.y * getWorldViewHeight() + camPos.y; + world.z = camPos.z; + + return world; +} + +void RenderSystem::update(entityx::EntityManager& entities, + entityx::EventManager&, + entityx::TimeDelta) { // TODO move these to only happen once to speed up rendering static GLuint s = worldShader.getProgram(); @@ -309,7 +333,7 @@ void RenderSystem::update([[maybe_unused]] entityx::EntityManager& entities, SDL_GL_SwapWindow(window.get()); } -int RenderSystem::init(void) +int RenderSystem::init() { if (SDL_InitSubSystem(SDL_INIT_VIDEO) != 0) { |