diff options
Diffstat (limited to 'src/systems/render.cpp')
| -rw-r--r-- | src/systems/render.cpp | 146 |
1 files changed, 146 insertions, 0 deletions
diff --git a/src/systems/render.cpp b/src/systems/render.cpp new file mode 100644 index 0000000..ce79522 --- /dev/null +++ b/src/systems/render.cpp @@ -0,0 +1,146 @@ +#include <systems/render.hpp> + +#include <components/visible.hpp> +#include <components/sprite.hpp> +#include <components/position.hpp> +#include <components/solid.hpp> +#include <components/flash.hpp> + +#include <thread> +#include <chrono> +using namespace std::literals::chrono_literals; + +#include <glm.hpp> +#include <render.hpp> +#include <engine.hpp> +#include <font.hpp> +#include <ui.hpp> + +std::string RenderSystem::loadTexString; +Texture RenderSystem::loadTexResult; + +Texture RenderSystem::loadTexture(const std::string& file) +{ + loadTexString = file; + loadTexResult = Texture(); + while (loadTexResult.isEmpty()) + std::this_thread::sleep_for(1ms); + auto t = loadTexResult; + loadTexResult = Texture(); + return t; +} + +void RenderSystem::render(void) +{ + if (!loadTexString.empty()) { + loadTexResult = Texture(loadTexString, false); + loadTexString.clear(); + } + + if (!loadTexResult.isEmpty()) + return; + + Render::worldShader.use(); + Render::worldShader.enable(); + + game::entities.each<Visible, Sprite, Position>([](entityx::Entity entity, Visible &visible, Sprite &sprite, Position &pos) { + // Verticies and shit + float its = 0; + + float sz; + if (entity.has_component<Solid>()) + sz = entity.component<Solid>()->width; + else + sz = sprite.getSpriteSize().x; + + if (sprite.faceLeft) { + glm::mat4 scale = glm::scale(glm::mat4(1.0f), glm::vec3(-1.0f,1.0f,1.0f)); + glm::mat4 translate = glm::translate(glm::mat4(1.0f), glm::vec3(0.0f - sz - pos.x * 2.0f, 0.0f, 0.0f)); + + glm::mat4 mov = scale * translate; + glUniformMatrix4fv(Render::worldShader.uniform[WU_transform], 1, GL_FALSE, glm::value_ptr(mov)); + } + + for (auto &S : sprite.sprite) { + auto sp = S.first; + auto size = sp.size * game::HLINE; + vec2 drawOffset (HLINES(S.second.x), HLINES(S.second.y)); + vec2 loc (pos.x + drawOffset.x, pos.y + drawOffset.y); + + GLfloat verts[] = { + loc.x, loc.y, visible.z + its, sp.offset_tex.x, sp.offset_tex.y, + loc.x + size.x, loc.y, visible.z + its, sp.offset_tex.x + sp.size_tex.x, sp.offset_tex.y, + loc.x + size.x, loc.y + size.y, visible.z + its, sp.offset_tex.x + sp.size_tex.x, sp.offset_tex.y + sp.size_tex.y, + loc.x, loc.y, visible.z + its, sp.offset_tex.x, sp.offset_tex.y, + loc.x + size.x, loc.y + size.y, visible.z + its, sp.offset_tex.x + sp.size_tex.x, sp.offset_tex.y + sp.size_tex.y, + loc.x, loc.y + size.y, visible.z + its, sp.offset_tex.x, sp.offset_tex.y + sp.size_tex.y + }; + + sp.tex.use(); + + glUniform1i(Render::worldShader.uniform[WU_texture], 0); + + glVertexAttribPointer(Render::worldShader.coord, 3, GL_FLOAT, GL_FALSE, 5 * sizeof(GLfloat), verts); + glVertexAttribPointer(Render::worldShader.tex, 2, GL_FLOAT, GL_FALSE, 5 * sizeof(GLfloat), verts + 3); + glDrawArrays(GL_TRIANGLES, 0, 6); + + if (entity.has_component<Flash>()) { + auto& f = *entity.component<Flash>(); + if (f.ms > 0) { + verts[2] = verts[7] = verts[12] = verts[17] = verts[22] = verts[27] = visible.z + its - 0.001f; + float alpha = static_cast<float>(f.ms) / static_cast<float>(f.totalMs); + glUniform4f(Render::worldShader.uniform[WU_tex_color], f.color.red, f.color.green, f.color.blue, alpha); + glVertexAttribPointer(Render::worldShader.coord, 3, GL_FLOAT, GL_FALSE, 5 * sizeof(GLfloat), verts); + glVertexAttribPointer(Render::worldShader.tex, 2, GL_FLOAT, GL_FALSE, 5 * sizeof(GLfloat), verts + 3); + glDrawArrays(GL_TRIANGLES, 0, 6); + glUniform4f(Render::worldShader.uniform[WU_tex_color], 1.0, 1.0, 1.0, 1.0); + } + } + + its-=.01; + } + glUniformMatrix4fv(Render::worldShader.uniform[WU_transform], 1, GL_FALSE, glm::value_ptr(glm::mat4(1.0f))); + + if (entity.has_component<Health>()) { + float width = entity.component<Solid>()->width; + auto& health = *entity.component<Health>(); + width *= health.health / static_cast<float>(health.maxHealth); + + GLfloat health_coord[] = { + pos.x, pos.y, -9, 0, 0, + pos.x + width, pos.y, -9, 0, 0, + pos.x + width, pos.y - 5, -9, 0, 0, + pos.x + width, pos.y - 5, -9, 0, 0, + pos.x, pos.y - 5, -9, 0, 0, + pos.x, pos.y, -9, 0, 0, + }; + + Colors::red.use(); + glVertexAttribPointer(Render::worldShader.coord, 3, GL_FLOAT, GL_FALSE, 5 * sizeof(GLfloat), health_coord); + glVertexAttribPointer(Render::worldShader.tex, 2, GL_FLOAT, GL_FALSE, 5 * sizeof(GLfloat), health_coord + 3); + glDrawArrays(GL_TRIANGLES, 0, 6); + } + }); + + Render::worldShader.disable(); + Render::worldShader.unuse(); + + game::entities.each<Visible, Position, Solid, Name>([](entityx::Entity e, Visible &v, Position &pos, Solid& dim, Name &name) { + (void)e; + (void)v; + FontSystem::setFontZ(-5.0f); + UISystem::putStringCentered(vec2(pos.x + dim.width / 2, pos.y - FontSystem::getSize() - HLINES(0.5)), name.name); + }); +} + +void RenderSystem::update(entityx::EntityManager &en, entityx::EventManager &ev, entityx::TimeDelta dt) +{ + (void)ev; + (void)dt; + + en.each<Flash>([](entityx::Entity e, Flash& flash) { + if (--flash.ms <= 0) // TODO delta time? + e.remove<Flash>(); + }); +} + |