#include "app.hpp"
+#include "geometry.hpp"
+
#include <iostream>
#include <stdexcept>
-namespace {
-
-constexpr GLfloat vtx_coords[] = {
- -1.0f, -1.0f, -5.0f,
- 1.0f, -1.0f, -5.0f,
- 0.0f, 1.0f, -5.0f,
-};
-
-}
-
namespace blank {
Application::Application()
: init_sdl()
+, init_img()
, init_gl()
, window()
, ctx(window.CreateContext())
, init_glew()
, program()
+, move_velocity(0.003f)
+, pitch_sensitivity(-0.0025f)
+, yaw_sensitivity(-0.001f)
+, blockType()
, cam()
-, vtx_buf(0)
+, chunk()
+, outline()
+, outline_visible(false)
+, outline_transform(1.0f)
+, light_position(17.0f, 17.0f, 17.0f)
+, light_color(1.0f, 1.0f, 1.0f)
+, light_power(250.0f)
+, m_handle(0)
+, v_handle(0)
+, mv_handle(0)
, mvp_handle(0)
-, running(false) {
+, light_position_handle(0)
+, light_color_handle(0)
+, light_power_handle(0)
+, running(false)
+, front(false)
+, back(false)
+, left(false)
+, right(false)
+, up(false)
+, down(false) {
GLContext::EnableVSync();
+ GLContext::EnableDepthTest();
+ GLContext::EnableBackfaceCulling();
program.LoadShader(
GL_VERTEX_SHADER,
"#version 330 core\n"
- "layout(location = 0) in vec3 vertexPosition_modelspace;\n"
+ "layout(location = 0) in vec3 vtx_position;\n"
+ "layout(location = 1) in vec3 vtx_color;\n"
+ "layout(location = 2) in vec3 vtx_normal;\n"
+ "uniform mat4 M;\n"
+ "uniform mat4 V;\n"
"uniform mat4 MVP;\n"
+ "uniform vec3 light_position;\n"
+ "out vec3 frag_color;\n"
+ "out vec3 vtx_world;\n"
+ "out vec3 normal;\n"
+ "out vec3 eye;\n"
+ "out vec3 light_direction;\n"
"void main() {\n"
- "vec4 v = vec4(vertexPosition_modelspace, 1);\n"
+ "vec4 v = vec4(vtx_position, 1);\n"
"gl_Position = MVP * v;\n"
+ "vtx_world = (M * v).xyz;\n"
+ "vec3 vtx_camera = (V * M * v).xyz;\n"
+ "eye = vec3(0, 0, 0) - vtx_camera;\n"
+ "vec3 light_camera = (V * v).xyz;\n"
+ "light_direction = light_position + eye;\n"
+ "normal = (V * M * vec4(vtx_normal, 0)).xyz;\n"
+ "frag_color = vtx_color;\n"
"}\n"
);
program.LoadShader(
GL_FRAGMENT_SHADER,
"#version 330 core\n"
+ "in vec3 frag_color;\n"
+ "in vec3 vtx_world;\n"
+ "in vec3 normal;\n"
+ "in vec3 eye;\n"
+ "in vec3 light_direction;\n"
+ "uniform mat4 MV;\n"
+ "uniform vec3 light_position;\n"
+ "uniform vec3 light_color;\n"
+ "uniform float light_power;\n"
"out vec3 color;\n"
"void main() {\n"
- "color = vec3(1, 1, 1);\n"
+ "vec3 ambient = vec3(0.1, 0.1, 0.1) * frag_color;\n"
+ "vec3 specular = vec3(0.3, 0.3, 0.3);\n"
+ "float distance = length(light_position - vtx_world);\n"
+ "vec3 n = normalize(normal);\n"
+ "vec3 l = normalize(light_direction);\n"
+ "float cos_theta = clamp(dot(n, l), 0, 1);\n"
+ "vec3 E = normalize(eye);\n"
+ "vec3 R = reflect(-l, n);\n"
+ "float cos_alpha = clamp(dot(E, R), 0, 1);\n"
+ "color = ambient"
+ " + frag_color * light_color * light_power * cos_theta / (distance * distance)"
+ " + specular * light_color * light_power * pow(cos_alpha, 5) / (distance * distance);\n"
"}\n"
);
program.Link();
glGenVertexArrays(1, &VertexArrayID);
glBindVertexArray(VertexArrayID);
- glGenBuffers(1, &vtx_buf);
- glBindBuffer(GL_ARRAY_BUFFER, vtx_buf);
- glBufferData(GL_ARRAY_BUFFER, sizeof(vtx_coords), vtx_coords, GL_STATIC_DRAW);
+ cam.Position(glm::vec3(0, 4, 4));
+
+ blockType.Add(BlockType(true, glm::vec3(1, 1, 1)));
+ blockType.Add(BlockType(true, glm::vec3(1, 0, 0)));
+ blockType.Add(BlockType(true, glm::vec3(0, 1, 0)));
+ blockType.Add(BlockType(true, glm::vec3(0, 0, 1)));
+
+ chunk.BlockAt(glm::vec3(0, 0, 0)) = Block(blockType[4]);
+ chunk.BlockAt(glm::vec3(0, 0, 1)) = Block(blockType[1]);
+ chunk.BlockAt(glm::vec3(1, 0, 0)) = Block(blockType[2]);
+ chunk.BlockAt(glm::vec3(1, 0, 1)) = Block(blockType[3]);
+ chunk.BlockAt(glm::vec3(2, 0, 0)) = Block(blockType[4]);
+ chunk.BlockAt(glm::vec3(2, 0, 1)) = Block(blockType[1]);
+ chunk.BlockAt(glm::vec3(3, 0, 0)) = Block(blockType[2]);
+ chunk.BlockAt(glm::vec3(3, 0, 1)) = Block(blockType[3]);
+ chunk.BlockAt(glm::vec3(2, 0, 2)) = Block(blockType[4]);
+ chunk.BlockAt(glm::vec3(2, 0, 3)) = Block(blockType[1]);
+ chunk.BlockAt(glm::vec3(3, 0, 2)) = Block(blockType[2]);
+ chunk.BlockAt(glm::vec3(3, 0, 3)) = Block(blockType[3]);
+ chunk.BlockAt(glm::vec3(1, 1, 0)) = Block(blockType[1]);
+ chunk.BlockAt(glm::vec3(1, 1, 1)) = Block(blockType[4]);
+ chunk.BlockAt(glm::vec3(2, 1, 1)) = Block(blockType[3]);
+ chunk.BlockAt(glm::vec3(2, 2, 1)) = Block(blockType[2]);
+ chunk.Invalidate();
+ outline.vertices = std::vector<glm::vec3>({
+ { 0.0f, 0.0f, 0.0f }, { 1.0f, 0.0f, 0.0f },
+ { 1.0f, 0.0f, 0.0f }, { 1.0f, 1.0f, 0.0f },
+ { 1.0f, 1.0f, 0.0f }, { 0.0f, 1.0f, 0.0f },
+ { 0.0f, 1.0f, 0.0f }, { 0.0f, 0.0f, 0.0f },
+ { 0.0f, 0.0f, 0.0f }, { 0.0f, 0.0f, 1.0f },
+ { 1.0f, 0.0f, 0.0f }, { 1.0f, 0.0f, 1.0f },
+ { 1.0f, 1.0f, 0.0f }, { 1.0f, 1.0f, 1.0f },
+ { 0.0f, 1.0f, 0.0f }, { 0.0f, 1.0f, 1.0f },
+ { 0.0f, 0.0f, 1.0f }, { 1.0f, 0.0f, 1.0f },
+ { 1.0f, 0.0f, 1.0f }, { 1.0f, 1.0f, 1.0f },
+ { 1.0f, 1.0f, 1.0f }, { 0.0f, 1.0f, 1.0f },
+ { 0.0f, 1.0f, 1.0f }, { 0.0f, 0.0f, 1.0f },
+ });
+ outline.colors.resize(24, { -1, -1, -1 });
+ outline.Invalidate();
+
+ m_handle = program.UniformLocation("M");
+ v_handle = program.UniformLocation("V");
+ mv_handle = program.UniformLocation("MV");
mvp_handle = program.UniformLocation("MVP");
+ light_position_handle = program.UniformLocation("light_position");
+ light_color_handle = program.UniformLocation("light_color");
+ light_power_handle = program.UniformLocation("light_power");
glClearColor(0.0, 0.0, 0.0, 1.0);
}
void Application::Run() {
running = true;
Uint32 last = SDL_GetTicks();
+ window.GrabMouse();
while (running) {
Uint32 now = SDL_GetTicks();
int delta = now - last;
void Application::Loop(int dt) {
HandleEvents();
+ Update(dt);
Render();
}
SDL_Event event;
while (SDL_PollEvent(&event)) {
switch (event.type) {
+ case SDL_KEYDOWN:
+ case SDL_KEYUP:
+ switch (event.key.keysym.sym) {
+ case SDLK_w:
+ front = event.key.state == SDL_PRESSED;
+ break;
+ case SDLK_s:
+ back = event.key.state == SDL_PRESSED;
+ break;
+ case SDLK_a:
+ left = event.key.state == SDL_PRESSED;
+ break;
+ case SDLK_d:
+ right = event.key.state == SDL_PRESSED;
+ break;
+ case SDLK_q:
+ up = event.key.state == SDL_PRESSED;
+ break;
+ case SDLK_e:
+ down = event.key.state == SDL_PRESSED;
+ break;
+ }
+ break;
+ case SDL_MOUSEMOTION:
+ cam.RotateYaw(event.motion.xrel * yaw_sensitivity);
+ cam.RotatePitch(event.motion.yrel * pitch_sensitivity);
+ break;
case SDL_QUIT:
running = false;
break;
}
}
+void Application::Update(int dt) {
+ glm::vec3 vel;
+ if (right && !left) {
+ vel.x = move_velocity;
+ } else if (left && !right) {
+ vel.x = -move_velocity;
+ }
+ if (up && !down) {
+ vel.y = move_velocity;
+ } else if (down && !up) {
+ vel.y = -move_velocity;
+ }
+ if (back && !front) {
+ vel.z = move_velocity;
+ } else if (front && !back) {
+ vel.z = -move_velocity;
+ }
+ cam.OrientationVelocity(vel);
+
+ cam.Update(dt);
+
+ Ray aim = cam.Aim();
+ int blkid;
+ float dist;
+ if (chunk.Intersection(aim, glm::mat4(1.0f), &blkid, &dist)) {
+ glm::vec3 pos = Chunk::ToCoords(blkid);
+ outline_visible = true;
+ outline_transform = glm::translate(glm::mat4(1.0f), pos);
+ } else {
+ outline_visible = false;
+ }
+}
+
void Application::Render() {
- glClear(GL_COLOR_BUFFER_BIT);
+ GLContext::Clear();
program.Use();
- glm::mat4 model(1.0f); // identity: no transformation
- glm::mat4 mvp(cam.MakeMVP(model));
+ glm::mat4 m(1.0f);
+ glm::mat4 mv(cam.View() * m);
+ glm::mat4 mvp(cam.MakeMVP(m));
+ glUniformMatrix4fv(m_handle, 1, GL_FALSE, &m[0][0]);
+ glUniformMatrix4fv(v_handle, 1, GL_FALSE, &cam.View()[0][0]);
+ glUniformMatrix4fv(mv_handle, 1, GL_FALSE, &mv[0][0]);
glUniformMatrix4fv(mvp_handle, 1, GL_FALSE, &mvp[0][0]);
+ glUniform3f(light_position_handle, light_position.x, light_position.y, light_position.z);
+ glUniform3f(light_color_handle, light_color.x, light_color.y, light_color.z);
+ glUniform1f(light_power_handle, light_power);
- glEnableVertexAttribArray(0);
- glBindBuffer(GL_ARRAY_BUFFER, vtx_buf);
- glVertexAttribPointer(
- 0, // attribute 0 (for shader)
- 3, // size
- GL_FLOAT, // type
- GL_FALSE, // normalized
- 0, // stride
- nullptr // offset
- );
- glDrawArrays(
- GL_TRIANGLES, // how
- 0, // start
- 3 // len
- );
- glDisableVertexAttribArray(0);
+ chunk.Draw();
+ if (outline_visible) {
+ mv = cam.View() * outline_transform;
+ mvp = cam.MakeMVP(outline_transform);
+ glUniformMatrix4fv(m_handle, 1, GL_FALSE, &m[0][0]);
+ glUniformMatrix4fv(mv_handle, 1, GL_FALSE, &mv[0][0]);
+ glUniformMatrix4fv(mvp_handle, 1, GL_FALSE, &mvp[0][0]);
+ outline.Draw();
+ }
window.Flip();
}
projects / blank.git / blobdiff