Moved relevant code to the Scene class.

1 files changed, 303 insertions, 0 deletions

diff --git a/scene.cpp b/scene.cpp
index 199471f..dd27044 100644
--- a/scene.cpp
+++ b/scene.cpp
@@ -1,13 +1,47 @@
 #include "scene.h"
+#include "video.h"
 
 #include <SDL_image.h>
+#include <boost/format.hpp>
+
 #include "gl.h"
 
 #include <cmath>
+#include <queue>
 
 #define inrange(a, b, c) ((a) >= (b) && (a) <= (c))
 
 Scene::Scene() {
+	running = true;
+	grid = false;
+	terrain = true;
+	gravity = true;
+
+	last_node = NULL;
+
+	do_select = false;
+	show_selection = false;
+
+	/* setup shader programs */
+	GLVertexShader terrain_vertex("shaders/terrain_vertex.glsl");
+	GLFragmentShader terrain_fragment("shaders/terrain_fragment.glsl");
+	terrain_program.attach(terrain_vertex);
+	terrain_program.attach(terrain_fragment);
+	terrain_program.link();
+
+	terrain_program.use();
+	GLint tex1loc = glGetUniformLocation(terrain_program.get_program(), "tex[1]");
+	glUniform1i(tex1loc, 1);
+	GLint tex2loc = glGetUniformLocation(terrain_program.get_program(), "tex[2]");
+	glUniform1i(tex2loc, 2);
+	glUseProgram(0);
+
+	/* load textures */
+	grass_texture = load_texture("textures/Grass0073_3_S.jpg");
+	rock_texture = load_texture("textures/RockJagged0010_2_S.jpg");
+	soil_texture = load_texture("textures/SoilSand0168_9_S.jpg");
+
+	/* load heightmap */
 	SDL_Surface *hm = IMG_Load("heightmap.png");
 	float *heightmap = new float[hm->w * hm->h];
 	for(int x = 0; x < hm->w; x++) {
@@ -20,11 +54,16 @@ Scene::Scene() {
 	int h = hm->h;
 	SDL_FreeSurface(hm);
 	qt = new Quadtree(w, h, heightmap);
+
+	/* load font */
+	font = new FTTextureFont("font.ttf");
+	font->FaceSize(10);
 }
 
 Scene::~Scene() {
 	if(qt)
 		delete qt;
+	delete font;
 }
 
 void Scene::lookat() {
@@ -94,3 +133,267 @@ bool Scene::select(int x, int y, float& px, float& py, float& pz) {
 void Scene::update() {
 	qt->update(pos.x, pos.z);
 }
+
+void Scene::events() {
+	SDL_Event event;
+	while(SDL_PollEvent(&event)) {
+		switch(event.type) {
+			case SDL_QUIT:
+				running = false;
+				break;
+			case SDL_KEYDOWN:
+				switch(event.key.keysym.sym) {
+					case SDLK_ESCAPE:
+						running = false;
+						break;
+					case SDLK_g:
+						grid = !grid;
+						break;
+					case SDLK_t:
+						terrain = !terrain;
+						break;
+					case SDLK_SPACE:
+						yvel = .05;
+						break;
+					case SDLK_h:
+						gravity = !gravity;
+						break;
+					case SDLK_u:
+						update();
+						break;
+					default:
+						break;
+				}
+				break;
+			case SDL_MOUSEBUTTONUP:
+				switch(event.button.button) {
+					case SDL_BUTTON_LEFT:
+						sx = event.button.x;
+						sy = event.button.y;
+						do_select = true;
+						// TODO: reimplement selection
+						break;
+					case SDL_BUTTON_RIGHT:
+						show_selection = false;
+						break;
+					case SDL_BUTTON_WHEELUP:
+					case SDL_BUTTON_WHEELDOWN:
+						// TODO: reimplement?
+						break;
+				}
+			case SDL_MOUSEMOTION:
+				if(event.motion.x == video::width/2 && event.motion.y == video::height/2)
+					break;
+				yaw += (float)event.motion.xrel / 500;
+				pitch += (float)event.motion.yrel / 500;
+				if(yaw > 2*M_PI)
+					yaw -= 2*M_PI;
+				else if(yaw < 0)
+					yaw += 2*M_PI;
+				if(pitch > M_PI)
+					pitch = M_PI;
+				else if(pitch < 0)
+					pitch = 0;
+				SDL_WarpMouse(video::width/2, video::height/2);
+				break;
+		}
+	}
+}
+
+void Scene::render() {
+	unsigned int time = SDL_GetTicks();
+	unsigned int steps = time - last_time + 1;
+	last_time = time;
+
+	glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
+	glLoadIdentity();
+	video::persp();
+
+	unsigned char *keystate = SDL_GetKeyState(NULL);
+	float forward = 0;
+	float right = 0;
+	bool moved = false;
+	if(keystate[SDLK_w]) {
+		moved = true;
+		forward++;
+	}
+	if(keystate[SDLK_s]) {
+		moved = true;
+		forward--;
+	}
+	if(keystate[SDLK_a]) {
+		moved = true;
+		right--;
+	}
+	if(keystate[SDLK_d]) {
+		moved = true;
+		right++;
+	}
+	if(keystate[SDLK_q])
+		pos.y -= 0.002*steps*(keystate[SDLK_LSHIFT]?10:1);
+	if(keystate[SDLK_e])
+		pos.y += 0.002*steps*(keystate[SDLK_LSHIFT]?10:1);
+	if(moved && (forward || right)) {
+		move(forward, right, steps*(keystate[SDLK_LSHIFT]?10:1));
+	}
+
+	std::string move_str;
+	Quadtree::QuadNode *node = qt->find(pos.x, pos.z);
+	if(node) {
+		if(gravity) {
+			float y = node->get_height(pos.x, pos.z);
+			if(pos.y > y && !keystate[SDLK_e])
+				yvel -= 9.81 * steps / 85000;
+			if(yvel < -.5)
+				yvel = -.5;
+			pos.y += yvel * steps;
+			if(pos.y < y) {
+				pos.y = y;
+				yvel = 0;
+			}
+		}
+		move_str = (boost::format("%s %.2f,%.2f %.2fx%.2f") % pos.str() % node->x % node->y % node->width % node->height).str();
+
+		if(last_node != node) {
+			last_node = node;
+			update();
+		}
+	}
+
+	lookat();
+
+	//glEnable(GL_LIGHTING);
+	const float light_pos[4] = {50, 100, 50, 1};
+	//const float light_pos[4] = {0, 1, 0, 0};
+	//glLightfv(GL_LIGHT0, GL_POSITION, light_pos);
+
+	unsigned int chunks_rendered = 0;
+	if(terrain) {
+		terrain_program.use();
+		glEnable(GL_TEXTURE_2D);
+
+		glActiveTexture(GL_TEXTURE0);
+		glBindTexture(GL_TEXTURE_2D, grass_texture);
+
+		glActiveTexture(GL_TEXTURE1);
+		glBindTexture(GL_TEXTURE_2D, rock_texture);
+
+		glActiveTexture(GL_TEXTURE2);
+		glBindTexture(GL_TEXTURE_2D, soil_texture);
+
+		std::queue<Quadtree::QuadChunk*> q;
+		q.push(qt->root);
+		while(!q.empty()) {
+			Quadtree::QuadChunk *chunk = q.front();
+			q.pop();
+			if(!chunk->nodes) {
+				for(int i = 0; i < 4; i++)
+					q.push(chunk->children[i]);
+				continue;
+			} else if(!chunk->vbo_object)
+				continue;
+			chunks_rendered++;
+		glBindBuffer(GL_ARRAY_BUFFER, chunk->vbo_object);
+		glVertexPointer(3, GL_FLOAT, 0, NULL);
+		glNormalPointer(GL_FLOAT, 0, (GLvoid*)(chunk->vertices*3*sizeof(float)));
+		glTexCoordPointer(2, GL_FLOAT, 0, (GLvoid*)(chunk->vertices*3*sizeof(float)*2));
+		glEnableClientState(GL_VERTEX_ARRAY);
+		glEnableClientState(GL_NORMAL_ARRAY);
+		glEnableClientState(GL_TEXTURE_COORD_ARRAY);
+		glDrawArrays(GL_TRIANGLES, 0, chunk->vertices);
+		glDisableClientState(GL_VERTEX_ARRAY);
+		glDisableClientState(GL_NORMAL_ARRAY);
+		glDisableClientState(GL_TEXTURE_COORD_ARRAY);
+		}
+		glDisable(GL_TEXTURE_2D);
+		// set active to texture0 to avoid breaking the texture font
+		glActiveTexture(GL_TEXTURE0);
+		glUseProgram(0);
+	}
+	if(grid) {
+		if(terrain)
+			glColor3f(0, 0, 0);
+		else
+			glColor3f(1, 1, 1);
+		std::queue<Quadtree::QuadChunk*> q;
+		q.push(qt->root);
+		while(!q.empty()) {
+			Quadtree::QuadChunk *chunk = q.front();
+			q.pop();
+			if(!chunk->nodes) {
+				for(int i = 0; i < 4; i++)
+					q.push(chunk->children[i]);
+				continue;
+			} else if(chunk->vbo_object) {
+				for(unsigned int i = 0; i < chunk->node_count; i++)
+					chunk->nodes[i]->draw_grid();
+			}
+		}
+	}
+
+	//glDisable(GL_LIGHTING);
+
+	float px, py, pz;
+	if(do_select && select(sx, sy, px, py, pz)) {
+		do_select = false;
+		selected = Vector3(px, py, pz);
+		show_selection = true;
+	}
+	if(show_selection) {
+		glColor3f(1, 0, 0);
+		glBegin(GL_TRIANGLE_FAN);
+			glVertex3f(selected.x, selected.y, selected.z);
+			glVertex3f(selected.x+.5, selected.y+1, selected.z-.5);
+			glVertex3f(selected.x+.5, selected.y+1, selected.z+.5);
+			glVertex3f(selected.x-.5, selected.y+1, selected.z+.5);
+			glVertex3f(selected.x-.5, selected.y+1, selected.z-.5);
+			glVertex3f(selected.x+.5, selected.y+1, selected.z-.5);
+		glEnd();
+	}
+
+	video::ortho();
+	float height = font->LineHeight();
+	glColor3f(1, 1, 1);
+	glTranslatef(0, video::height-height, 0);
+	font->Render((boost::format("%dx%d  chunks: %d  steps: %d")
+				% qt->width % qt->height % chunks_rendered % steps).str().c_str());
+	//font->Render((boost::format("%dx%d  %d levels  %d nodes  tree creation time: %f  steps: %d  update: %d")
+	//			% scene.qt->width % scene.qt->height % scene.qt->levels % scene.qt->nodes % scene.qt->init_time % steps % scene.qt->thread_running).str().c_str());
+	//glTranslatef(0, height, 0);
+	//font->Render((boost::format("selected: %x") % selected).str().c_str());
+	glTranslatef(0, -height, 0);
+	font->Render(move_str.c_str());
+	/*if(selected) {
+		glTranslatef(0, height, 0);
+		//font->Render((boost::format("(%s %s %s %s)") % selected->a->str() % selected->b->str() % selected->c->str() % selected->d->str()).str().c_str());
+		font->Render(selected->str().c_str());
+	}*/
+
+	SDL_GL_SwapBuffers();
+}
+
+GLuint Scene::load_texture(const char *filename) {
+	GLuint texture;
+	SDL_Surface *surface = IMG_Load(filename);
+	SDL_Surface *image = SDL_CreateRGBSurface(SDL_SWSURFACE, surface->w, surface->h, 32,
+			0x000000ff, 0x0000ff00, 0x00ff0000, 0xff000000);
+	SDL_Rect area;
+	area.x = area.y = 0;
+	area.w = surface->w;
+	area.h = surface->h;
+	SDL_BlitSurface(surface, &area, image, &area);
+	glPixelStorei(GL_UNPACK_ALIGNMENT, 4);
+	glGenTextures(1, &texture);
+	glBindTexture(GL_TEXTURE_2D, texture);
+	glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR_MIPMAP_LINEAR);
+	glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
+	if(image->format->Amask) {
+		gluBuild2DMipmaps(GL_TEXTURE_2D, 4, image->w, image->h, GL_RGBA, GL_UNSIGNED_BYTE, image->pixels);
+	} else {
+		gluBuild2DMipmaps(GL_TEXTURE_2D, 3, image->w, image->h, GL_RGB, GL_UNSIGNED_BYTE, image->pixels);
+	}
+	SDL_FreeSurface(surface);
+	SDL_FreeSurface(image);
+
+	return texture;
+}