106 lines
2.5 KiB
C++
106 lines
2.5 KiB
C++
#include "MySimple2DScene.h"
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#include "stdafx.h"
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#include <cmath>
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#include <iostream>
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#include "constants.h"
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#include "DrawMode.h"
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#include "MeshFactory.h"
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MySimple2DScene::MySimple2DScene(Application& application)
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: Scene(application),
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m_shape(MeshFactory<MySimpleShaderProgram::Vertex, MySimpleShaderProgram::Index>::gen(
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DrawMode::DRAW_TRIANGLES,
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MySimpleShaderProgram::Vertex(-50.0f, 50.0f, 0.0f),
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MySimpleShaderProgram::Vertex(50.0f, 150.0f, 0.0f),
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MySimpleShaderProgram::Vertex(-100.0f, -50.0f, 0.0f),
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MySimpleShaderProgram::Vertex(100.0f, -50.0f, 0.0f)
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), DrawMode::DRAW_TRIANGLES),
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m_batch(&m_shape, 2),
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m_camera(m_screen_size)
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{}
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MySimple2DScene::~MySimple2DScene()
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{}
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void MySimple2DScene::init()
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{
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m_batch.init();
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}
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void MySimple2DScene::use()
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{
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glEnable(GL_DEPTH_TEST);
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glDepthFunc(GL_LESS);
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}
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void MySimple2DScene::unuse()
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{
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}
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void MySimple2DScene::update(float delta_time, clock_t clock)
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{
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float brightness;
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float radians;
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clock_t c;
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const clock_t intervals = 512 * CLOCKS_PER_SEC / 100;
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const clock_t half_interval = 256 * CLOCKS_PER_SEC / 100;
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c = clock % intervals;
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if (c < half_interval)
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brightness = (float)c / half_interval;
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else
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brightness = (float)(intervals - c) / half_interval;
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radians = (float)TAU * c / intervals;
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{
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MySimpleShaderProgram::Color& color = m_batch.get_color(0);
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color.r = brightness;
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color.g = brightness;
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color.b = brightness;
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color.a = 1.0f;
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Poseable& pose = m_batch.get_pose(0);
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pose.update_position(vec3(cos(radians) * 50, 0.0f, 0.0f));
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}
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{
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MySimpleShaderProgram::Color& color = m_batch.get_color(1);
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color.r = 1.0f - brightness;
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color.g = 1.0f - brightness;
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color.b = 1.0f - brightness;
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color.a = 1.0f;
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Poseable& pose = m_batch.get_pose(1);
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pose.update_position(vec3(0.0f, sin(radians) * 50, 0.0f));
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}
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vec2 camera_translation(0.0f, 0.0f);
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if (m_input_manager.is_key_down(GLFW_KEY_W)) camera_translation.y += 1;
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if (m_input_manager.is_key_down(GLFW_KEY_S)) camera_translation.y -= 1;
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if (m_input_manager.is_key_down(GLFW_KEY_A)) camera_translation.x -= 1;
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if (m_input_manager.is_key_down(GLFW_KEY_D)) camera_translation.x += 1;
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m_camera.translate(camera_translation * delta_time * 100.0f);
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}
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void MySimple2DScene::prerender()
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{
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m_camera.prerender();
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m_batch.prerender();
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}
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void MySimple2DScene::render()
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{
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glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
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m_shader_program.use();
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glUniformMatrix4fv(0, 1, GL_FALSE, &m_camera.get_world_to_view_matrix()[0][0]);
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m_batch.render();
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}
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