nuclear@1: #include <math.h>
nuclear@0: #include "level.h"
nuclear@0: #include "logger.h"
nuclear@1: #include "texman.h"
nuclear@1: #include "sdrman.h"
nuclear@0: 
nuclear@0: static void gen_mesh(Mesh *mesh);
nuclear@0: 
nuclear@1: static ShaderProg *level_sdr;
nuclear@1: 
nuclear@0: Level::Level()
nuclear@0: {
nuclear@1: 	dlimit_near = 0;
nuclear@1: 	dlimit_far = 25;
nuclear@1: 
nuclear@1: 	fly_speed = 3.0;
nuclear@0: 
nuclear@0: 	gen_mesh(&tile_mesh);
nuclear@0: 
nuclear@0: 	tile_obj = new Object;
nuclear@0: 	tile_obj->set_mesh(&tile_mesh);
nuclear@1: 	tile_obj->material.tex[0] = texset.get("data/purple_grid.png");
nuclear@1: 
nuclear@1: 	level_sdr = get_sdrprog("sdr/default.v.glsl", "sdr/level.p.glsl");
nuclear@0: }
nuclear@0: 
nuclear@0: Level::~Level()
nuclear@0: {
nuclear@0: 	delete tile_obj;
nuclear@0: }
nuclear@0: 
nuclear@0: void Level::set_draw_limits(float dnear, float dfar)
nuclear@0: {
nuclear@0: 	dlimit_near = dnear;
nuclear@0: 	dlimit_far = dfar;
nuclear@0: }
nuclear@0: 
nuclear@1: void Level::draw(long msec) const
nuclear@0: {
nuclear@0: 	AABox bbox = tile_obj->get_aabbox();
nuclear@0: 	float zsize = bbox.max.z - bbox.min.z;
nuclear@0: 	float zoffs = -zsize / 2.0;
nuclear@0: 
nuclear@1: 	float tm = (float)msec / 1000.0;
nuclear@1: 
nuclear@1: 	level_sdr->bind();
nuclear@1: 
nuclear@0: 	float z = dlimit_near;
nuclear@0: 	while(z < dlimit_far) {
nuclear@1: 		tile_obj->set_position(Vector3(0, 0, -(z - zoffs) + fmod(tm * fly_speed, zsize)));
nuclear@1: 
nuclear@1: 		// draw mirrored
nuclear@1: 		glFrontFace(GL_CW);
nuclear@1: 		tile_obj->set_scaling(Vector3(-1, 1, 1));
nuclear@0: 		tile_obj->draw();
nuclear@1: 		glFrontFace(GL_CCW);
nuclear@1: 		tile_obj->set_scaling(Vector3(1, 1, 1));
nuclear@1: 		tile_obj->draw();
nuclear@1: 
nuclear@0: 		z += zsize;
nuclear@0: 	}
nuclear@0: }
nuclear@0: 
nuclear@1: #define DEPTH	2.0
nuclear@1: #define POSTZ	(0.8 * DEPTH)
nuclear@1: 
nuclear@0: static void gen_mesh(Mesh *mesh)
nuclear@0: {
nuclear@1: 	// vertical side
nuclear@0: 	mesh->normal(1, 0, 0);
nuclear@1: 	mesh->texcoord(0, 0); mesh->vertex(-2, 0, DEPTH);
nuclear@1: 	mesh->texcoord(3, 0); mesh->vertex(-2, 0, -DEPTH);
nuclear@1: 	mesh->texcoord(3, 2); mesh->vertex(-2, 1, -DEPTH);
nuclear@1: 	mesh->texcoord(0, 2); mesh->vertex(-2, 1, DEPTH);
nuclear@0: 
nuclear@1: 	// left diagonal
nuclear@0: 	Vector3 dnorm = Vector3(0.5, 1, 0).normalized();
nuclear@0: 	mesh->normal(dnorm.x, dnorm.y, dnorm.z);
nuclear@1: 	mesh->texcoord(0, 0); mesh->vertex(-1, -0.5, DEPTH);
nuclear@1: 	mesh->texcoord(3, 0); mesh->vertex(-1, -0.5, -DEPTH);
nuclear@1: 	mesh->texcoord(3, 2); mesh->vertex(-2, 0, -DEPTH);
nuclear@1: 	mesh->texcoord(0, 2); mesh->vertex(-2, 0, DEPTH);
nuclear@1: 
nuclear@1: 	// vertical post front
nuclear@1: 	mesh->normal(0, 0, 1);
nuclear@1: 	mesh->texcoord(0, 0); mesh->vertex(-2, -0.5, -POSTZ);
nuclear@1: 	mesh->texcoord(1, 0); mesh->vertex(-1.7, -0.5, -POSTZ);
nuclear@1: 	mesh->texcoord(1, 3); mesh->vertex(-1.7, 1, -POSTZ);
nuclear@1: 	mesh->texcoord(0, 3); mesh->vertex(-2, 1, -POSTZ);
nuclear@1: 
nuclear@1: 	// vertical post side
nuclear@1: 	mesh->normal(1, 0, 0);
nuclear@1: 	mesh->texcoord(0, 0); mesh->vertex(-1.7, -0.5, -POSTZ);
nuclear@1: 	mesh->texcoord(1, 0); mesh->vertex(-1.7, -0.5, -DEPTH);
nuclear@1: 	mesh->texcoord(1, 3); mesh->vertex(-1.7, 1, -DEPTH);
nuclear@1: 	mesh->texcoord(0, 3); mesh->vertex(-1.7, 1, -POSTZ);
nuclear@1: 
nuclear@1: 	// vertical post top
nuclear@1: 	mesh->normal(0, 1, 0);
nuclear@1: 	mesh->texcoord(0, 0); mesh->vertex(-2, 1, -POSTZ);
nuclear@1: 	mesh->texcoord(1, 0); mesh->vertex(-1.7, 1, -POSTZ);
nuclear@1: 	mesh->texcoord(1, 1); mesh->vertex(-1.7, 1, -DEPTH);
nuclear@1: 	mesh->texcoord(0, 1); mesh->vertex(-2, 1, -DEPTH);
nuclear@0: 
nuclear@0: 	/* floor */
nuclear@0: 	mesh->normal(0, 1, 0);
nuclear@1: 	mesh->texcoord(0, 0); mesh->vertex(-1, -0.5, DEPTH);
nuclear@1: 	mesh->texcoord(1, 0); mesh->vertex(0, -0.5, DEPTH);
nuclear@1: 	mesh->texcoord(1, 3); mesh->vertex(0, -0.5, -DEPTH);
nuclear@1: 	mesh->texcoord(0, 3); mesh->vertex(-1, -0.5, -DEPTH);
nuclear@0: 
nuclear@0: 	// quad face index buffer
nuclear@0: 	int nverts = mesh->get_attrib_count(MESH_ATTR_VERTEX);
nuclear@0: 	for(int i=0; i<nverts; i+=4) {
nuclear@0: 		mesh->face(i, i + 1, i + 2);
nuclear@0: 		mesh->face(i, i + 2, i + 3);
nuclear@0: 	}
nuclear@0: 
nuclear@0: 	info_log("generated level trough mesh: %d polygons\n", mesh->get_poly_count());
nuclear@0: }