From: Daniel Karbach <daniel.karbach@localhorst.tv>
Date: Sun, 8 Mar 2015 18:45:59 +0000 (+0100)
Subject: move controller from camera to world
X-Git-Url: https://git.localhorst.tv/?a=commitdiff_plain;h=753be639d7d04f9f7415db9fc2721485c531f0a1;p=blank.git

move controller from camera to world
---

diff --git a/src/app.cpp b/src/app.cpp
index 8c0793d..21eb85c 100644
--- a/src/app.cpp
+++ b/src/app.cpp
@@ -16,9 +16,6 @@ Application::Application()
 , ctx(window.CreateContext())
 , init_glew()
 , program()
-, move_velocity(0.003f)
-, pitch_sensitivity(-0.0025f)
-, yaw_sensitivity(-0.001f)
 , cam()
 , hud()
 , world()
@@ -26,12 +23,6 @@ Application::Application()
 , outline_visible(false)
 , outline_transform(1.0f)
 , running(false)
-, front(false)
-, back(false)
-, left(false)
-, right(false)
-, up(false)
-, down(false)
 , place(false)
 , remove(false)
 , pick(false)
@@ -45,7 +36,6 @@ Application::Application()
 
 	world.Generate();
 
-	cam.Position(glm::vec3(0, 4, 4));
 	hud.Viewport(960, 600);
 	hud.Display(*world.BlockTypes()[place_id]);
 
@@ -78,28 +68,7 @@ void Application::HandleEvents() {
 		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:
-					case SDLK_SPACE:
-						up = event.key.state == SDL_PRESSED;
-						break;
-					case SDLK_e:
-					case SDLK_LSHIFT:
-						down = event.key.state == SDL_PRESSED;
-						break;
-				}
+				world.Controller().HandleKeyboard(event.key);
 				break;
 			case SDL_MOUSEBUTTONDOWN:
 				if (event.button.button == 1) {
@@ -114,8 +83,7 @@ void Application::HandleEvents() {
 				}
 				break;
 			case SDL_MOUSEMOTION:
-				cam.RotateYaw(event.motion.xrel * yaw_sensitivity);
-				cam.RotatePitch(event.motion.yrel * pitch_sensitivity);
+				world.Controller().HandleMouse(event.motion);
 				break;
 			case SDL_QUIT:
 				running = false;
@@ -137,27 +105,9 @@ void Application::HandleEvents() {
 }
 
 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);
+	world.Update(dt);
 
-	cam.Update(dt);
-
-	Ray aim = cam.Aim();
+	Ray aim = world.Controller().Aim();
 	Chunk *chunk;
 	int blkid;
 	float dist;
@@ -207,13 +157,8 @@ void Application::Render() {
 
 	program.Activate();
 
-	program.SetLightDirection({ -1.0f, -3.0f, -2.0f });
-	program.SetVP(cam.View(), cam.Projection());
-
-	for (Chunk &chunk : world.LoadedChunks()) {
-		program.SetM(chunk.Transform());
-		chunk.Draw();
-	}
+	program.SetProjection(cam.Projection());
+	world.Render(program);
 
 	if (outline_visible) {
 		program.SetM(outline_transform);
diff --git a/src/app.hpp b/src/app.hpp
index e1f328a..0443942 100644
--- a/src/app.hpp
+++ b/src/app.hpp
@@ -39,21 +39,16 @@ private:
 	InitGLEW init_glew;
 	DirectionalLighting program;
 
-	float move_velocity;
-	float pitch_sensitivity;
-	float yaw_sensitivity;
-
 	Camera cam;
 	HUD hud;
 	World world;
-	OutlineModel outline;
 
+	OutlineModel outline;
 	bool outline_visible;
 	glm::mat4 outline_transform;
 
 	bool running;
 
-	bool front, back, left, right, up, down;
 	bool place, remove, pick;
 
 	int remove_id;
diff --git a/src/camera.cpp b/src/camera.cpp
index 4bbb0f1..8f61867 100644
--- a/src/camera.cpp
+++ b/src/camera.cpp
@@ -7,13 +7,11 @@
 namespace blank {
 
 Camera::Camera()
-: FPSController()
-, fov(45.0f)
+: fov(45.0f)
 , aspect(1.0f)
 , near_clip(0.1f)
 , far_clip(100.0f)
-, projection(glm::perspective(fov, aspect, near_clip, far_clip))
-, view(glm::inverse(Transform())) {
+, projection(glm::perspective(fov, aspect, near_clip, far_clip)) {
 
 }
 
@@ -47,20 +45,6 @@ void Camera::Clip(float near, float far) {
 	UpdateProjection();
 }
 
-Ray Camera::Aim() const {
-	const glm::mat4 inv_vp(glm::inverse(projection * view));
-	glm::vec4 from = inv_vp * glm::vec4(0.0f, 0.0f, -1.0f, 1.0f);
-	from /= from.w;
-	glm::vec4 to = inv_vp * glm::vec4(0.0f, 0.0f, 1.0f, 1.0f);
-	to /= to.w;
-	return Ray{ glm::vec3(from), glm::normalize(glm::vec3(to - from)) };
-}
-
-
-void Camera::Update(int dt) {
-	FPSController::Update(dt);
-	view = glm::inverse(Transform());
-}
 
 void Camera::UpdateProjection() {
 	projection = glm::perspective(fov, aspect, near_clip, far_clip);
diff --git a/src/camera.hpp b/src/camera.hpp
index 805109c..22e2ba5 100644
--- a/src/camera.hpp
+++ b/src/camera.hpp
@@ -3,21 +3,14 @@
 
 #include <glm/glm.hpp>
 
-#include "controller.hpp"
-#include "geometry.hpp"
-
 
 namespace blank {
 
-class Camera
-: public FPSController {
+class Camera {
 
 public:
 	Camera();
 
-	Camera(const Camera &) = delete;
-	Camera &operator =(const Camera &) = delete;
-
 	void Viewport(int width, int height);
 	void Viewport(int x, int y, int width, int height);
 
@@ -26,12 +19,7 @@ public:
 	void Aspect(float w, float h);
 	void Clip(float near, float far);
 
-	Ray Aim() const;
-
 	const glm::mat4 &Projection() { return projection; }
-	const glm::mat4 &View() { return view; }
-
-	void Update(int dt);
 
 private:
 	void UpdateProjection();
@@ -43,7 +31,6 @@ private:
 	float far_clip;
 
 	glm::mat4 projection;
-	glm::mat4 view;
 
 };
 
diff --git a/src/controller.cpp b/src/controller.cpp
index d0a026b..3911e0f 100644
--- a/src/controller.cpp
+++ b/src/controller.cpp
@@ -12,23 +12,124 @@ FPSController::FPSController()
 : velocity(0, 0, 0)
 , position(0, 0, 0)
 , pitch(0)
-, yaw(0) {
+, yaw(0)
+, transform(1.0f)
+, dirty(true)
+, move_velocity(0.003f)
+, pitch_sensitivity(-0.0025f)
+, yaw_sensitivity(-0.001f)
+, front(false)
+, back(false)
+, left(false)
+, right(false)
+, up(false)
+, down(false) {
 
 }
 
 
-glm::mat4 FPSController::Transform() const {
-	return glm::translate(position) * glm::eulerAngleYX(yaw, pitch);
+const glm::mat4 &FPSController::Transform() const {
+	if (dirty) {
+		transform = glm::translate(position) * glm::eulerAngleYX(yaw, pitch);
+		dirty = false;
+	}
+	return transform;
+}
+
+Ray FPSController::Aim() const {
+	glm::vec4 from = Transform() * glm::vec4(0.0f, 0.0f, 1.0f, 1.0f);
+	from /= from.w;
+	glm::vec4 to = Transform() * glm::vec4(0.0f, 0.0f, -1.0f, 1.0f);
+	to /= to.w;
+	return Ray{ glm::vec3(from), glm::normalize(glm::vec3(to - from)) };
 }
 
 
 void FPSController::OrientationVelocity(const glm::vec3 &vel) {
-	velocity = glm::rotateY(vel, yaw);
+	Velocity(glm::rotateY(vel, yaw));
+}
+
+
+void FPSController::Pitch(float p) {
+	pitch = p;
+	if (pitch > PI / 2) {
+		pitch = PI / 2;
+	} else if (pitch < -PI / 2) {
+		pitch = -PI / 2;
+	}
+	dirty = true;
+}
+
+void FPSController::RotatePitch(float delta) {
+	Pitch(pitch + delta);
+}
+
+void FPSController::Yaw(float y) {
+	yaw = y;
+	if (yaw > PI) {
+		yaw -= PI * 2;
+	} else if (yaw < -PI) {
+		yaw += PI * 2;
+	}
+	dirty = true;
+}
+
+void FPSController::RotateYaw(float delta) {
+	Yaw(yaw + delta);
+}
+
+
+void FPSController::HandleKeyboard(const SDL_KeyboardEvent &event) {
+	switch (event.keysym.sym) {
+		case SDLK_w:
+			front = event.state == SDL_PRESSED;
+			break;
+		case SDLK_s:
+			back = event.state == SDL_PRESSED;
+			break;
+		case SDLK_a:
+			left = event.state == SDL_PRESSED;
+			break;
+		case SDLK_d:
+			right = event.state == SDL_PRESSED;
+			break;
+		case SDLK_q:
+		case SDLK_SPACE:
+			up = event.state == SDL_PRESSED;
+			break;
+		case SDLK_e:
+		case SDLK_LSHIFT:
+			down = event.state == SDL_PRESSED;
+			break;
+	}
+}
+
+void FPSController::HandleMouse(const SDL_MouseMotionEvent &event) {
+	RotateYaw(event.xrel * yaw_sensitivity);
+	RotatePitch(event.yrel * pitch_sensitivity);
 }
 
 
 void FPSController::Update(int dt) {
-	position += velocity * float(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;
+	}
+	OrientationVelocity(vel);
+
+	Move(velocity * float(dt));
 }
 
 }
diff --git a/src/controller.hpp b/src/controller.hpp
index f636bcd..853eeff 100644
--- a/src/controller.hpp
+++ b/src/controller.hpp
@@ -1,6 +1,9 @@
 #ifndef BLANK_CONTROLLER_HPP_
 #define BLANK_CONTROLLER_HPP_
 
+#include "geometry.hpp"
+
+#include <SDL.h>
 #include <glm/glm.hpp>
 
 
@@ -11,20 +14,24 @@ class FPSController {
 public:
 	FPSController();
 
-	glm::mat4 Transform() const;
+	const glm::mat4 &Transform() const;
+	Ray Aim() const;
 
-	void Velocity(glm::vec3 vel) { velocity = vel; }
+	void Velocity(glm::vec3 vel) { velocity = vel; dirty = true; }
 	void OrientationVelocity(const glm::vec3 &vel);
-	void Position(glm::vec3 pos) { position = pos; }
-	void Move(glm::vec3 delta) { position += delta; }
+	void Position(glm::vec3 pos) { position = pos; dirty = true; }
+	void Move(glm::vec3 delta) { Position(position + delta); }
 
 	// all angles in radians (full circle = 2π)
 	float Pitch() const { return pitch; }
-	void Pitch(float p) { pitch = p; }
-	void RotatePitch(float delta) { pitch += delta; }
+	void Pitch(float p);
+	void RotatePitch(float delta);
 	float Yaw() const { return yaw; }
-	void Yaw(float y) { yaw = y; }
-	void RotateYaw(float delta) { yaw += delta; }
+	void Yaw(float y);
+	void RotateYaw(float delta);
+
+	void HandleKeyboard(const SDL_KeyboardEvent &);
+	void HandleMouse(const SDL_MouseMotionEvent &);
 
 	void Update(int dt);
 
@@ -34,6 +41,15 @@ private:
 	float pitch;
 	float yaw;
 
+	mutable glm::mat4 transform;
+	mutable bool dirty;
+
+	float move_velocity;
+	float pitch_sensitivity;
+	float yaw_sensitivity;
+
+	bool front, back, left, right, up, down;
+
 };
 
 }
diff --git a/src/geometry.hpp b/src/geometry.hpp
index bcc9c9a..d74e08e 100644
--- a/src/geometry.hpp
+++ b/src/geometry.hpp
@@ -7,6 +7,8 @@
 
 namespace blank {
 
+constexpr float PI = 3.141592653589793238462643383279502884;
+
 struct AABB {
 	glm::vec3 min;
 	glm::vec3 max;
diff --git a/src/shader.cpp b/src/shader.cpp
index e01c11f..43b3910 100644
--- a/src/shader.cpp
+++ b/src/shader.cpp
@@ -211,7 +211,19 @@ void DirectionalLighting::SetLightDirection(const glm::vec3 &dir) {
 	glUniform3f(light_direction_handle, light_direction.x, light_direction.y, light_direction.z);
 }
 
+void DirectionalLighting::SetProjection(const glm::mat4 &p) {
+	projection = p;
+	vp = p * view;
+}
+
+void DirectionalLighting::SetView(const glm::mat4 &v) {
+	view = v;
+	vp = projection * v;
+}
+
 void DirectionalLighting::SetVP(const glm::mat4 &v, const glm::mat4 &p) {
+	projection = p;
+	view = v;
 	vp = p * v;
 }
 
diff --git a/src/shader.hpp b/src/shader.hpp
index 97211c4..195376c 100644
--- a/src/shader.hpp
+++ b/src/shader.hpp
@@ -70,6 +70,8 @@ public:
 	void SetLightDirection(const glm::vec3 &);
 
 	void SetM(const glm::mat4 &m);
+	void SetProjection(const glm::mat4 &p);
+	void SetView(const glm::mat4 &v);
 	void SetVP(const glm::mat4 &v, const glm::mat4 &p);
 	void SetMVP(const glm::mat4 &m, const glm::mat4 &v, const glm::mat4 &p);
 
@@ -79,6 +81,8 @@ private:
 	glm::vec3 light_direction;
 	glm::vec3 light_color;
 
+	glm::mat4 projection;
+	glm::mat4 view;
 	glm::mat4 vp;
 
 	GLuint m_handle;
diff --git a/src/world.cpp b/src/world.cpp
index 57583e6..7a498c3 100644
--- a/src/world.cpp
+++ b/src/world.cpp
@@ -179,6 +179,8 @@ World::World()
 	blockType.Add(BlockType{ true, { 0.0f, 0.0f, 1.0f }, &blockShape }); // blue block
 	blockType.Add(BlockType{ true, { 0.0f, 0.0f, 1.0f }, &stairShape }); // blue stair
 	blockType.Add(BlockType{ true, { 0.0f, 0.0f, 1.0f }, &slabShape }); // blue slab
+
+	player.Position({ 4.0f, 4.0f, 4.0f });
 }
 
 
@@ -273,4 +275,20 @@ Chunk &World::Next(const Chunk &to, const glm::vec3 &dir) {
 	return Generate(tgt_pos);
 }
 
+
+void World::Update(int dt) {
+	player.Update(dt);
+}
+
+
+void World::Render(DirectionalLighting &program) {
+	program.SetLightDirection({ -1.0f, -3.0f, -2.0f });
+	program.SetView(glm::inverse(player.Transform()));
+
+	for (Chunk &chunk : LoadedChunks()) {
+		program.SetM(chunk.Transform());
+		chunk.Draw();
+	}
+}
+
 }
diff --git a/src/world.hpp b/src/world.hpp
index ce44c7c..8ca03a2 100644
--- a/src/world.hpp
+++ b/src/world.hpp
@@ -1,9 +1,11 @@
 #ifndef BLANK_WORLD_HPP_
 #define BLANK_WORLD_HPP_
 
+#include "controller.hpp"
 #include "geometry.hpp"
 #include "model.hpp"
 #include "noise.hpp"
+#include "shader.hpp"
 #include "shape.hpp"
 
 #include <list>
@@ -179,8 +181,14 @@ public:
 	BlockTypeRegistry &BlockTypes() { return blockType; }
 	std::list<Chunk> &LoadedChunks() { return chunks; }
 
+	FPSController &Controller() { return player; }
+
 	Chunk &Next(const Chunk &, const glm::vec3 &dir);
 
+	void Update(int dt);
+
+	void Render(DirectionalLighting &);
+
 private:
 	Chunk &Generate(const glm::vec3 &);
 
@@ -193,6 +201,8 @@ private:
 	SimplexNoise blockNoise;
 	SimplexNoise colorNoise;
 
+	FPSController player;
+
 	std::list<Chunk> chunks;
 
 };