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Maurice Huang
2026-10-18 11:07:51 -04:00
commit aff6a4f902
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Engine.cpp
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#include "Engine.h"
// ============================================================================
// Standard library
// ============================================================================
#include <iostream>
#include <vector>
#include <random>
#include <map>
#include <string>
#include <memory>
#include <type_traits>
// ============================================================================
// OpenGL
// ============================================================================
#include <glad/glad.h>
#include <GLFW/glfw3.h>
// ============================================================================
// Math
// ============================================================================
#include <glm/glm.hpp>
#include <glm/gtc/matrix_transform.hpp>
#include <glm/gtc/type_ptr.hpp>
#include <glm/gtc/quaternion.hpp>
// ============================================================================
// Third party
// ============================================================================
#include <ft2build.h>
#include FT_FREETYPE_H
// ============================================================================
// Engine � core
// ============================================================================
#include "common.h"
#include "Window.h"
#include "Camera.h"
#include "Keyboard.h"
#include "Mouse.h"
#include "Physics.h"
#include "RenderSystem.h"
#include "SoundSystem.h"
#include "ResourceManager.h"
#include "tFunctions.h"
#include "Debug.h"
// Rendering
#include "shaderClass.h"
#include "VBO.h"
#include "VAO.h"
#include "EBO.h"
#include "FBO.h"
#include "texture.h"
#include "Material.h"
#include "Mesh.h"
#include "Model.h"
#include "Cubemap.h"
#include "QuadVertices.h"
#include "Particle.h"
#include "Lighting.h"
#include "DirLight.h"
// Scene
#include "Folder.h"
#include "Sound.h"
#include "Gui.h"
#include "Net.h"
#include "font.h"
// Character / animation
#include "Rig.h"
#include "Animator.h"
#include "Character.h"
#include "DefaultBodyComponents.h"
#include "BodyComponentActions.h"
#define STB_IMAGE_IMPLEMENTATION
#include "stb_image.h"
// ============================================================================
// Constructor � window, callbacks, systems, shaders
// ============================================================================
Engine::Engine()
{
engine = this;
glfwSetFramebufferSizeCallback(window->handle, framebuffer_size_callback);
glfwSetCursorPosCallback(window->handle, mouse_callback);
glfwSetScrollCallback(window->handle, scroll_callback);
glfwSetKeyCallback(window->handle, key_callback);
glfwSetMouseButtonCallback(window->handle, mouse_button_callback);
glfwSwapInterval(1);
rendersystem = new RenderSystem();
rendersystem->Initialize();
physicsengine = new Physics();
mainf = new Folder();
camera = new Camera();
camera->t.TranslateTo({ 0.0f, 5.0f, 0.0f });
rendersystem->RigShader = new Shader("shaders/rig.vert", "shaders/default.frag");
rendersystem->MeshShader = new Shader("shaders/default.vert", "shaders/default.frag");
rendersystem->MeshShadowShader = new Shader("shaders/meshshadow.vert", "shaders/shadow.frag");
rendersystem->RigShadowShader = new Shader("shaders/rigshadow.vert", "shaders/shadow.frag");
rendersystem->SkyboxShader = new Shader("shaders/skybox.vert", "shaders/skybox.frag");
rendersystem->ScreenShader = new Shader("shaders/ScreenShader.vert", "shaders/ScreenShader.frag");
rendersystem->ImageBoxShader = new Shader("shaders/ImageBox.vert", "shaders/ImageBox.frag");
rendersystem->BoxShader = new Shader("shaders/Box.vert", "shaders/Box.frag");
rendersystem->Text2DShader = new Shader("shaders/2DText.vert", "shaders/2DText.frag");
rendersystem->ParticleShader = new Shader("shaders/Particle.vert", "shaders/Particle.frag");
}
// ============================================================================
// Initiate � scene setup + game loop
// ============================================================================
void Engine::Initiate()
{
// ------------------------------------------------------------------------
// Assets
// ------------------------------------------------------------------------
Font* arial = new Font("assets/ft/arial.ttf");
Texture* blanktex = new Texture("assets/blanktexture.png");
Texture* magic = new Texture("assets/itsmagicbitch.jpg");
Texture* snowflake = new Texture("assets/snowflake.png");
Texture* leontex = new Texture("assets/revolvertex.png");
// ------------------------------------------------------------------------
// Shared rig + animations
// ------------------------------------------------------------------------
Rig* testrig = new Rig("assets/rig.glb");
Animation* testanimation = new Animation("assets/walkanim.glb");
Animation* punchanim = new Animation("assets/punchanim.glb");
// ------------------------------------------------------------------------
// Player character
// ------------------------------------------------------------------------
Character* testcharacter = new Character();
testcharacter->name = "character";
testcharacter->castshadow = true;
testcharacter->body->t.ScaleBy({ 0.5f, 1.8f, 0.5f });
testcharacter->body->t.TranslateTo({ 0.0f, 0.9f, 0.0f });
testcharacter->body->SetRig(testrig);
// Base animator (weight 0) � walk, looped
testcharacter->body->SetAnimation(testanimation);
testcharacter->body->animator->loops = true;
// Punch animator (weight 1) � one-shot, starts stopped
Animator* punchAnimator = testcharacter->body->AddAnimator(1);
punchAnimator->loops = false;
punchAnimator->SetAnimation(punchanim);
punchAnimator->StopAnimation();
// First person: don't draw our own model (other players still see it via the network)
p* characterBody = new p(testcharacter->body);
characterBody->mass = 80.0f;
characterBody->lockRotation = true;
characterBody->friction = 0.0f;
physicsengine->AddObject(characterBody);
// ------------------------------------------------------------------------
// NPC
// ------------------------------------------------------------------------
Character* npc = new Character();
npc->name = "npc";
npc->castshadow = true;
npc->body->t.ScaleBy({ 0.5f, 1.8f, 0.5f });
npc->body->t.TranslateTo({ 3.0f, 0.9f, 3.0f });
npc->body->SetRig(testrig);
npc->body->SetAnimation(testanimation);
npc->BindToRenderSystem();
p* npcBody = new p(npc->body);
npcBody->mass = 80.0f;
npcBody->lockRotation = true;
npcBody->friction = 0.0f;
physicsengine->AddObject(npcBody);
// ------------------------------------------------------------------------
// Remote players (other PCs), keyed by network id. Not in physics: their transform
// comes from the network. Created on first packet, removed when packets stop.
// ------------------------------------------------------------------------
struct RemotePlayer {
Character* character = nullptr;
double lastSeen = 0.0;
};
std::map<int, RemotePlayer> remotes;
auto SpawnRemote = [&]() -> Character* {
Character* c = new Character();
c->name = "remote";
c->castshadow = true;
c->body->t.ScaleBy({ 0.5f, 1.8f, 0.5f });
c->body->SetRig(testrig);
c->body->SetAnimation(testanimation);
c->BindToRenderSystem();
return c;
};
// In a LAN game, start at a random spot so players don't all spawn inside each other
if (lan && lan->IsActive()) {
std::mt19937 rng(std::random_device{}());
std::uniform_real_distribution<float> spread(-8.0f, 8.0f);
testcharacter->body->t.TranslateTo({ spread(rng), 0.9f, spread(rng) });
}
// ------------------------------------------------------------------------
// Rain particles
// ------------------------------------------------------------------------
ParticleEmitter* rain = new ParticleEmitter();
rain->name = "rain";
rain->tex = snowflake;
rain->opaque = false;
rain->speed = 35.0f;
rain->lifespan = 0.6f;
rain->angularvelocity = { 0.0f, 0.0f, glm::radians(10.0f) };
rain->size = { 0.04f, 0.4f, 0.0f };
rain->emitangle = { glm::radians(60.0f), glm::radians(360.0f), glm::radians(60.0f) };
rain->facecamera = false;
rain->color = { 1.0f, 1.0f, 1.0f, 1.0f };
rain->emitdirection = ParticleEmitter::EmitDirection::Perpendicular;
rain->t.TranslateTo({ 0.0f, 10.0f, 0.0f });
rain->t.RotateToQuaternion(glm::quat(glm::vec3(glm::radians(85.0f), 0.0f, 0.0f)));
rain->BindToRenderSystem();
mainf->AddChild(rain);
// ------------------------------------------------------------------------
// 3D audio
// ------------------------------------------------------------------------
Sound* music = new Sound();
music->name = "music";
music->LoadSound("assets/fs.wav", true);
music->Update3DPosition(0.0f, 0.0f, 0.0f);
music->PlayTrack(true);
mainf->AddChild(music);
// ------------------------------------------------------------------------
// GUI
// ------------------------------------------------------------------------
Crosshair* crosshair = new Crosshair();
crosshair->Color = { 0.0f, 0.0f, 0.0f };
crosshair->Dot = true;
crosshair->Apply();
TextBox* tb = new TextBox();
tb->font = arial;
tb->text = "ASDASD\nASDASD\nADSADSA";
tb->fontsize = 0.5f;
tb->Color = { 0.0f, 0.0f, 0.0f };
tb->t2d.position = { 0.5f, 0.5f, 0.0f, 0.0f };
tb->t2d.center = { 0.0f, 0.0f };
tb->textCenter = { 0.0f, 0.5f };
tb->t2d.size = { 0.2f, 0.1f, 0.0f, 0.0f };
tb->BindToRenderSystem();
TextBox* fpsCounter = new TextBox();
fpsCounter->font = arial;
fpsCounter->text = "TEST1231231123";
fpsCounter->fontsize = 0.5f;
fpsCounter->Color = { 0.0f, 0.0f, 0.0f };
fpsCounter->t2d.position = { 1.0f, 0.0f, 0.0f, 0.0f };
fpsCounter->t2d.center = { 1.0f, 0.0f };
fpsCounter->textCenter = { 0.0f, 0.5f };
fpsCounter->t2d.size = { 0.1f, 0.1f, 0.0f, 0.0f };
fpsCounter->BindToRenderSystem();
TextBox* netText = new TextBox();
netText->font = arial;
netText->text = "";
netText->fontsize = 0.5f;
netText->Color = { 1.0f, 1.0f, 1.0f };
netText->t2d.position = { 1.0f, 0.0f, 0.0f, 40.0f };
netText->t2d.center = { 1.0f, 0.0f };
netText->textCenter = { 1.0f, 0.5f };
netText->t2d.size = { 0.0f, 0.0f, 360.0f, 40.0f };
netText->BindToRenderSystem();
TextBox* hpText = new TextBox();
hpText->font = arial;
hpText->text = "100/100 HP";
hpText->fontsize = 0.7f;
hpText->Color = { 1.0f, 1.0f, 1.0f };
hpText->t2d.position = { 0.0f, 1.0f, 20.0f, -20.0f };
hpText->t2d.center = { 0.0f, 1.0f };
hpText->textCenter = { 0.0f, 0.5f };
hpText->t2d.size = { 0.0f, 0.0f, 220.0f, 50.0f };
hpText->BindToRenderSystem();
TextBox* grappleText = new TextBox();
grappleText->font = arial;
grappleText->text = "GRAPPLE READY";
grappleText->fontsize = 0.5f;
grappleText->Color = { 1.0f, 1.0f, 1.0f };
grappleText->t2d.position = { 0.5f, 1.0f, 0.0f, -20.0f };
grappleText->t2d.center = { 0.5f, 1.0f };
grappleText->textCenter = { 0.5f, 0.5f };
grappleText->t2d.size = { 0.0f, 0.0f, 300.0f, 40.0f };
grappleText->BindToRenderSystem();
ImageBox* testgui = new ImageBox();
testgui->tex = magic;
testgui->Color = { 1.0f, 1.0f, 1.0f };
testgui->Opacity = 0.8f;
testgui->rounding = 0.1f;
testgui->t2d.center = { 0.0f, 1.0f };
testgui->t2d.position = { 0.0f, 1.0f, 10.0f, -10.0f };
testgui->t2d.size = { 0.0f, 0.0f, 744.0f / 2.0f, 914.0f / 2.0f };
testgui->BindToRenderSystem();
// ------------------------------------------------------------------------
// World meshes
// ------------------------------------------------------------------------
Model leonrevolver("assets/leonrevolver.obj");
for (Mesh* mesh : leonrevolver.meshes) {
auto newmesh = mesh->Clone();
newmesh->name = "revolver";
newmesh->castshadow = true;
newmesh->meshTexture = leontex;
newmesh->t.TranslateBy({ 4.0f, 4.0f, 4.0f });
newmesh->BindToRenderSystem();
mainf->AddChild(newmesh);
}
Mesh* debugcube = CreateCubeMesh();
debugcube->name = "debugcube";
debugcube->t.ScaleTo({ 0.8f, 0.8f, 0.8f });
debugcube->BindToRenderSystem();
mainf->AddChild(debugcube);
Mesh* floor = CreateCubeMesh();
floor->name = "floor";
floor->meshTexture = blanktex;
floor->t.ScaleTo({ 100.0f, 2.0f, 100.0f });
floor->t.TranslateTo({ 0.0f, -1.0f, 0.0f });
floor->BindToRenderSystem();
mainf->AddChild(floor);
p* floorBody = new p(floor);
floorBody->velocity = false;
physicsengine->AddObject(floorBody);
// Wall: frictionless (player friction is 0 too) so you slide along it
Mesh* wall = CreateCubeMesh();
wall->name = "wall";
wall->meshTexture = blanktex;
wall->t.ScaleTo({ 1.0f, 6.0f, 20.0f });
wall->t.TranslateTo({ -8.0f, 3.0f, 0.0f });
wall->BindToRenderSystem();
mainf->AddChild(wall);
p* wallBody = new p(wall);
wallBody->velocity = false;
wallBody->friction = 0.0f;
physicsengine->AddObject(wallBody);
Mesh* cube = CreateCubeMesh();
cube->name = "cube";
cube->meshTexture = blanktex;
cube->t.ScaleTo({ 1.0f, 1.0f, 1.0f });
cube->t.TranslateTo({ 5.0f, 4.0f, 6.5f });
cube->BindToRenderSystem();
mainf->AddChild(cube);
Mesh* cube2 = CreateCubeMesh();
cube2->name = "cubee";
cube2->meshTexture = blanktex;
cube2->t.ScaleTo({ 1.0f, 1.0f, 1.0f });
cube2->t.TranslateTo({ 10.0f, 4.0f, 10.5f });
cube2->BindToRenderSystem();
mainf->AddChild(cube2);
// Ground check
auto IsGrounded = [&]() -> bool {
Ray downRay;
downRay.origin = testcharacter->body->t.GetTranslation();
downRay.direction = glm::vec3(0.0f, -1.0f, 0.0f);
const float halfHeight = testcharacter->body->t.GetScale().y * 0.5f;
for (p* obj : physicsengine->GetObjects()) {
if (obj->pointer == testcharacter->body) continue;
if (!obj->collision) continue;
auto hit = IsRayInT(downRay, obj->pointer->t);
if (hit.has_value()) {
if (glm::distance(downRay.origin, hit.value()) < halfHeight + 0.15f)
return true;
}
}
return false;
};
// Hitscan shot from the camera. Head = top 20% of the target's box = instant kill,
// body = 50 damage (two shots). Respawns the target when it dies.
// Movement tuning
const float airControl = 0.5f; // fraction of ground acceleration available in the air
const float grappleRange = 4.0f; // metres from the player
const float grappleSpeed = 28.0f; // launch speed toward the hit point
const float grappleCooldownTime = 2.5f; // seconds
float grappleCooldown = 0.0f;
// Slide (key C): locked direction, committed for slideDuration, speed eases from
// slideBoost x ground top speed down to 1x by slideFalloffTime.
const float slideBoost = 2.0f;
const float slideDuration = 0.8f;
const float slideFalloffTime = 0.7f;
const float slideDropY = 0.65f; // standing centre height (0.9) minus lying (0.25)
const float standEyeOffset = 0.7f; // eyes 0.7 above body centre (body centre 0.9, height 1.8)
const float slideEyeOffset = 0.25f; // lying down, eyes just above the floor
float eyeOffset = standEyeOffset;
bool sliding = false;
float slideTime = 0.0f;
glm::vec3 slideDir(0.0f);
const int maxHealth = 100;
const int bodyDamage = 50;
const float headFraction = 0.8f;
auto Shoot = [&]() {
Ray ray;
ray.origin = camera->t.GetTranslation();
ray.direction = glm::normalize(camera->t.GetFrontVector());
auto targetHit = IsRayInT(ray, npc->body->t);
if (!targetHit.has_value()) return;
const float targetDist = glm::distance(ray.origin, targetHit.value());
// Walls/props in front of the target block the shot
for (p* obj : physicsengine->GetObjects()) {
if (obj->pointer == testcharacter->body || obj->pointer == npc->body) continue;
if (!obj->collision) continue;
auto blocked = IsRayInT(ray, obj->pointer->t);
if (blocked.has_value() && glm::distance(ray.origin, blocked.value()) < targetDist)
return;
}
const float heightFrac = (targetHit->y - npc->body->t.GetTranslation().y)
/ npc->body->t.GetScale().y + 0.5f;
const bool headshot = heightFrac >= headFraction;
npc->body->Health -= headshot ? maxHealth : bodyDamage;
std::cout << (headshot ? "HEADSHOT" : "BODY SHOT") << " - NPC HP " << npc->body->Health << "\n";
camera->AddScreenshake(0.05f);
if (npc->body->Health <= 0) {
npc->body->Health = maxHealth;
npc->body->t.TranslateTo({ 3.0f, 0.9f, 3.0f });
npcBody->linearvelocity = glm::vec3(0.0f);
npcBody->WakeUp();
}
};
// ========================================================================
// Game loop
// ========================================================================
while (!glfwWindowShouldClose(window->handle))
{
frame++;
const float deltatime = 1.0f / float(fps);
const glm::vec3 camFront = camera->t.GetFrontVector();
const glm::vec3 camRight = camera->t.GetRightVector();
const float movespeed = 3.0f * 1.3f;
// --------------------------------------------------------------------
// Input � mouse
// --------------------------------------------------------------------
while (Mouse::Event buffer = mouse->Read()) {
if (buffer.GetType() == Mouse::Event::Type::Move) {
float xoffset = mouse->GetX() - mouse->GetLastX();
float yoffset = mouse->GetLastY() - mouse->GetY();
camera->ProcessMouseMovement(xoffset, yoffset);
}
else if (buffer.GetType() == Mouse::Event::Type::LPress) {
Shoot();
}
else if (buffer.GetType() == Mouse::Event::Type::RPress) {
camera->lockedcursor = !camera->lockedcursor;
}
}
// --------------------------------------------------------------------
// Input � held movement
// --------------------------------------------------------------------
glm::vec3 inputVel = glm::vec3(0.0f);
if (keyboard->IsKeyDown('W')) inputVel += glm::normalize(glm::vec3(camFront.x, 0.0f, camFront.z));
if (keyboard->IsKeyDown('S')) inputVel -= glm::normalize(glm::vec3(camFront.x, 0.0f, camFront.z));
if (keyboard->IsKeyDown('A')) inputVel += glm::normalize(glm::vec3(camRight.x, 0.0f, camRight.z));
if (keyboard->IsKeyDown('D')) inputVel -= glm::normalize(glm::vec3(camRight.x, 0.0f, camRight.z));
if (glm::length(inputVel) > 0.0f)
inputVel = glm::normalize(inputVel) * movespeed;
// --------------------------------------------------------------------
// Input � keyboard events
// --------------------------------------------------------------------
while (Keyboard::Event buffer = keyboard->ReadKey()) {
if (buffer.GetCode() == 'E' && buffer.IsPress()) {
Mesh* nc = CreateCubeMesh();
nc->name = "cube!";
nc->t.ScaleTo(1.0f);
nc->t.TranslateTo(camera->t.GetTranslation());
nc->t.RotateByEulerAngles({ 0.0f, 0.0f, 0.0f });
nc->BindToRenderSystem();
mainf->AddChild(nc);
physicsengine->AddObject(new p(nc));
}
if (buffer.GetCode() == 'F' && buffer.IsPress()) {
const glm::vec3 playerPos = testcharacter->body->t.GetTranslation();
const glm::vec3 playerFront = glm::normalize(glm::vec3(camFront.x, 0.0f, camFront.z));
// Restart punch on high-priority animator
punchAnimator->m_CurrentTime = 0.0f;
punchAnimator->PlayAnimation();
debugcube->t.TranslateTo(playerPos + playerFront * 0.8f);
debugcube->t.ScaleTo({ 0.8f, 0.8f, 0.8f });
debugcube->t.RotateToQuaternion(LookAt(-playerFront));
std::optional<TInTInfo> hit = TInT(debugcube->t, npc->body->t);
if (hit.has_value()) {
std::cout << "HIT NPC\n";
npcBody->WakeUp();
npcBody->linearvelocity += playerFront * 5.0f + glm::vec3(0.0f, 3.0f, 0.0f);
camera->AddScreenshake(0.15f); // landing a punch feels impactful
}
else {
std::cout << "MISSED\n";
}
}
if (buffer.GetCode() == GLFW_KEY_LEFT_SHIFT && buffer.IsPress() && !sliding) {
glm::vec3 dashDir = glm::length(inputVel) > 0.0f
? glm::normalize(inputVel)
: glm::normalize(glm::vec3(camFront.x, 0.0f, camFront.z));
characterBody->linearvelocity.x += dashDir.x * 18.0f;
characterBody->linearvelocity.z += dashDir.z * 18.0f;
camera->AddScreenshake(0.04f);
}
if (buffer.GetCode() == 'C' && buffer.IsPress() && !sliding && IsGrounded()) {
const glm::vec3 horizVel(characterBody->linearvelocity.x, 0.0f, characterBody->linearvelocity.z);
if (glm::length(inputVel) > 0.0f || glm::length(horizVel) > 1.0f) {
slideDir = glm::length(inputVel) > 0.0f ? glm::normalize(inputVel) : glm::normalize(horizVel);
sliding = true;
slideTime = 0.0f;
// Lie down feet-first: tilt the model's up axis to point back along the slide.
// Hitbox is the same box, rotated with it; drop it so the feet stay on the floor.
const glm::vec3 tiltAxis = glm::normalize(glm::cross(slideDir, glm::vec3(0.0f, 1.0f, 0.0f)));
testcharacter->body->t.RotateToQuaternion(
glm::angleAxis(glm::radians(90.0f), tiltAxis) * LookAt(-slideDir));
glm::vec3 pos = testcharacter->body->t.GetTranslation();
pos.y -= slideDropY;
testcharacter->body->t.TranslateTo(pos);
camera->AddScreenshake(0.06f);
}
}
if (buffer.GetCode() == 'R' && buffer.IsPress() && !sliding && grappleCooldown <= 0.0f) {
// Short-range grapple: aim with the camera, latch onto a surface within range
Ray ray;
ray.origin = camera->t.GetTranslation();
ray.direction = glm::normalize(camFront);
float bestDist = grappleRange;
glm::vec3 bestPoint(0.0f);
bool found = false;
for (p* obj : physicsengine->GetObjects()) {
if (obj->pointer == testcharacter->body || obj->pointer == npc->body) continue;
if (!obj->collision) continue;
auto hit = IsRayInT(ray, obj->pointer->t);
if (!hit.has_value()) continue;
const float d = glm::distance(ray.origin, hit.value());
if (d < bestDist) { bestDist = d; bestPoint = hit.value(); found = true; }
}
if (found) {
characterBody->linearvelocity = glm::normalize(bestPoint - ray.origin) * grappleSpeed;
characterBody->WakeUp();
grappleCooldown = grappleCooldownTime;
camera->AddScreenshake(0.1f);
}
}
if (buffer.GetCode() == 'G' && buffer.IsPress()) {
camera->AddScreenshake(0.2f);
}
if (buffer.GetCode() == GLFW_KEY_SPACE && buffer.IsPress()) {
if (!sliding && IsGrounded())
characterBody->linearvelocity.y = 5.0f;
}
}
// --------------------------------------------------------------------
// Input � held keys
// --------------------------------------------------------------------
if (keyboard->IsKeyDown(GLFW_KEY_ESCAPE))
glfwSetWindowShouldClose(window->handle, 1);
// Movement + damping
grappleCooldown = std::max(grappleCooldown - deltatime, 0.0f);
const float accel = 40.0f;
const float damp = 0.75f;
const float groundTopSpeed = movespeed * accel * deltatime * damp / (1.0f - damp);
if (sliding) {
// Direction is locked; speed eases from boost x down to 1x (quadratic: drops fastest early)
slideTime += deltatime;
const float u = glm::clamp(slideTime / slideFalloffTime, 0.0f, 1.0f);
const float speed = groundTopSpeed * (1.0f + (slideBoost - 1.0f) * (1.0f - u) * (1.0f - u));
characterBody->linearvelocity.x = slideDir.x * speed;
characterBody->linearvelocity.z = slideDir.z * speed;
if (slideTime >= slideDuration) {
sliding = false;
glm::vec3 pos = testcharacter->body->t.GetTranslation();
pos.y += slideDropY + 0.02f; // stand back up (rotation is reset below)
testcharacter->body->t.TranslateTo(pos);
}
}
else if (IsGrounded()) {
characterBody->linearvelocity.x *= damp;
characterBody->linearvelocity.z *= damp;
characterBody->linearvelocity.x += inputVel.x * accel * deltatime;
characterBody->linearvelocity.z += inputVel.z * accel * deltatime;
}
else if (glm::length(inputVel) > 0.0f) {
// Air: no ground drag so momentum (grapple, dash) carries. Input only adds
// speed along the wish direction up to movespeed, at airControl of ground accel.
const glm::vec3 wishDir = glm::normalize(inputVel);
const float current = glm::dot(glm::vec3(characterBody->linearvelocity.x, 0.0f,
characterBody->linearvelocity.z), wishDir);
const float add = glm::clamp(groundTopSpeed - current, 0.0f,
accel * airControl * movespeed * deltatime);
characterBody->linearvelocity.x += wishDir.x * add;
characterBody->linearvelocity.z += wishDir.z * add;
}
// --------------------------------------------------------------------
// Scene updates
// --------------------------------------------------------------------
{
const glm::vec3 playerPos = testcharacter->body->t.GetTranslation();
const glm::vec3 playerFront = glm::normalize(glm::vec3(camFront.x, 0.0f, camFront.z));
debugcube->t.TranslateTo(playerPos + playerFront * 0.8f);
debugcube->t.ScaleTo({ 0.8f, 0.8f, 0.8f });
debugcube->t.RotateToQuaternion(LookAt(-playerFront));
}
rain->t.TranslateTo(camera->t.GetTranslation() + glm::vec3(0.0f, 20.0f, 0.0f));
for (int i = 0; i < 30; i++) rain->Emit();
if (!sliding) {
testcharacter->body->t.RotateToQuaternion(
LookAt(-glm::normalize(glm::vec3(camFront.x, 0.0f, camFront.z)))
);
}
// First person: camera at the eyes (eased down while sliding)
eyeOffset += ((sliding ? slideEyeOffset : standEyeOffset) - eyeOffset) * 0.3f;
camera->t.TranslateTo(testcharacter->body->t.GetTranslation() + glm::vec3(0.0f, eyeOffset, 0.0f));
Sound* music = static_cast<Sound*>(mainf->GetFirstChildOfName("music"));
Mesh* cube = static_cast<Mesh*>(mainf->GetFirstChildOfName("cube"));
music->Update3DPosition(cube->t.GetTranslation());
soundsystem->SetListenerPosition(
camera->t.GetTranslation(),
camera->t.GetFrontVector(),
camera->t.GetUpVector()
);
// --------------------------------------------------------------------
// FPS counter
// --------------------------------------------------------------------
{
static double lastTime = glfwGetTime();
static int frameCount = 0;
static int measuredFps = 0;
static float accumulator = 0.0f;
double now = glfwGetTime();
accumulator += (float)(now - lastTime);
lastTime = now;
frameCount++;
if (accumulator >= 0.25f) {
measuredFps = (int)(frameCount / accumulator);
frameCount = 0;
accumulator = 0.0f;
}
fpsCounter->text = std::to_string(measuredFps) + " FPS";
}
hpText->text = std::to_string(std::max(testcharacter->body->Health, 0)) + "/100 HP";
grappleText->text = grappleCooldown > 0.0f
? "GRAPPLE " + std::to_string(grappleCooldown).substr(0, 3) + "s"
: "GRAPPLE READY";
// --------------------------------------------------------------------
// Step systems
// --------------------------------------------------------------------
camera->Step(deltatime);
rain->Step(deltatime);
testcharacter->Step(deltatime);
npc->Step(deltatime);
soundsystem->Update();
physicsengine->Step(deltatime);
// --------------------------------------------------------------------
// LAN: send our transform, apply the other player's
// --------------------------------------------------------------------
if (lan && lan->IsActive()) {
NetState mine;
mine.position = testcharacter->body->t.GetTranslation();
mine.rotation = testcharacter->body->t.GetRotationQuaternion();
mine.sliding = sliding;
lan->Send(mine);
const double now = glfwGetTime();
std::vector<NetUpdate> updates;
lan->Receive(updates);
for (const NetUpdate& u : updates) {
auto it = remotes.find(u.id);
if (it == remotes.end()) {
// First packet from this player: spawn them exactly at their pose
RemotePlayer rp;
rp.character = SpawnRemote();
rp.character->body->t.TranslateTo(u.state.position);
rp.character->body->t.RotateToQuaternion(u.state.rotation);
it = remotes.emplace(u.id, rp).first;
}
else {
// Smooth over the 60 Hz updates
t& rt = it->second.character->body->t;
rt.TranslateTo(glm::mix(rt.GetTranslation(), u.state.position, 0.5f));
rt.RotateToQuaternion(glm::slerp(rt.GetRotationQuaternion(), u.state.rotation, 0.5f));
}
it->second.lastSeen = now;
}
// Drop players we haven't heard from in 2 s, animate the rest
for (auto it = remotes.begin(); it != remotes.end();) {
if (now - it->second.lastSeen > 2.0) {
rendersystem->RemoveRenderable(it->second.character);
delete it->second.character;
it = remotes.erase(it);
}
else {
it->second.character->Step(deltatime);
++it;
}
}
if (lan->GetMode() == Lan::Mode::Host)
netText->text = "LAN: hosting - " + std::to_string(lan->PeerCount() + 1) + "/"
+ std::to_string(Lan::MaxPlayers) + " players";
else
netText->text = lan->IsConnected() ? "LAN: connected - " + std::to_string(remotes.size() + 1) + " players"
: "LAN: joining...";
}
// --------------------------------------------------------------------
// Render
// --------------------------------------------------------------------
rendersystem->Render(*camera);
glfwPollEvents();
}
}
// ============================================================================
// GLFW callbacks
// ============================================================================
void framebuffer_size_callback(GLFWwindow* window, int w, int h)
{
}
void key_callback(GLFWwindow* window, int key, int scancode, int action, int mods)
{
if (action == GLFW_PRESS) keyboard->KeyDown(key);
else if (action == GLFW_RELEASE) keyboard->KeyUp(key);
}
void scroll_callback(GLFWwindow* window, double xoffset, double yoffset)
{
}
void mouse_callback(GLFWwindow* window, double xposIn, double yposIn)
{
mouse->OnMouseMove(static_cast<float>(xposIn), static_cast<float>(yposIn));
glfwSetInputMode(window, GLFW_CURSOR, GLFW_CURSOR_DISABLED);
glfwSetCursorPos(window, ::window->width / 2, ::window->height / 2);
mouse->OnMouseMove(::window->width / 2.0f, ::window->height / 2.0f);
}
void mouse_button_callback(GLFWwindow* window, int button, int action, int mods)
{
if (button == GLFW_MOUSE_BUTTON_RIGHT) {
if (action == GLFW_PRESS) mouse->RightDown();
else mouse->RightUp();
}
else if (button == GLFW_MOUSE_BUTTON_LEFT) {
if (action == GLFW_PRESS) mouse->LeftDown();
else mouse->LeftUp();
}
}