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add sphere object, attempting to draw shot but position is way wrong

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This commit is contained in:
Josh Holtrop 2012-10-06 22:03:37 -04:00
parent f0b1b91a9f
commit 59b81aebe0
2 changed files with 84 additions and 0 deletions
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81
src/client/Client-gl.cc
View File

@ -18,6 +18,7 @@ using namespace std;
#define NUM_SKY_STEPS 9
#define LAVA_SIZE 100
#define NUM_SHOT_RING_STEPS 24
#define NUM_SPHERE_SLICES 12
/* points of a horizontal hexagon 1.0 units high */
static const float overlay_hex_attributes[][3] = {
@ -219,6 +220,48 @@ bool Client::initgl()
cerr << "Error creating shot ring attributes buffer" << endl;
return false;
}
vector<GLfloat> sphere_attributes(
(NUM_SPHERE_SLICES + 1) * (NUM_SPHERE_SLICES / 2 + 1) * (3 + 3));
for (int i = 0, idx = 0; i <= NUM_SPHERE_SLICES; i++)
{
for (int j = 0; j <= NUM_SPHERE_SLICES / 2; j++)
{
double z_angle = i * M_PI * 2.0 / NUM_SPHERE_SLICES;
GLfloat xo = cos(z_angle);
GLfloat yo = sin(z_angle);
double x_angle = j * M_PI * 2.0 / NUM_SPHERE_SLICES;
GLfloat r = sin(x_angle);
GLfloat x = r * xo;
GLfloat y = r * yo;
GLfloat z = -cos(x_angle);
sphere_attributes[idx++] = x;
sphere_attributes[idx++] = y;
sphere_attributes[idx++] = z;
sphere_attributes[idx++] = x;
sphere_attributes[idx++] = y;
sphere_attributes[idx++] = z;
}
}
if (!m_sphere_attributes.create(GL_ARRAY_BUFFER, GL_STATIC_DRAW,
&sphere_attributes[0],
sizeof(sphere_attributes[0]) * sphere_attributes.size()))
{
cerr << "Error creating sphere attributes buffer" << endl;
return false;
}
vector<GLushort> sphere_indices;
for (int i = 0; i <= NUM_SPHERE_SLICES / 2; i++)
{
sphere_indices.push_back(i);
sphere_indices.push_back(i + (NUM_SPHERE_SLICES / 2) + 1);
}
if (!m_sphere_indices.create(GL_ELEMENT_ARRAY_BUFFER, GL_STATIC_DRAW,
&sphere_indices[0],
sizeof(sphere_indices[0]) * sphere_indices.size()))
{
cerr << "Error creating sphere indices buffer" << endl;
return false;
}
unsigned int lava_texture_length;
const uint8_t *lava_texture = CFS.get_file("textures/lava.jpg",
&lava_texture_length);
@ -273,6 +316,11 @@ void Client::redraw()
draw_lava();
draw_shot_ring();
for (m_shots_iterator_t it = m_shots.begin(); it != m_shots.end(); it++)
{
draw_shot(*it);
}
draw_overlay();
}
@ -392,6 +440,39 @@ void Client::draw_map()
}
}
void Client::draw_shot(refptr<Shot> shot)
{
m_obj_program.use();
m_sphere_attributes.bind();
m_sphere_indices.bind();
glEnableVertexAttribArray(0);
glEnableVertexAttribArray(1);
glVertexAttribPointer(0, 3, GL_FLOAT, GL_FALSE,
6 * sizeof(GLfloat), NULL);
glVertexAttribPointer(1, 3, GL_FLOAT, GL_FALSE,
6 * sizeof(GLfloat), (void *)(3 * sizeof(GLfloat)));
m_modelview.push();
sf::Vector3f pos = shot->get_position();
m_modelview.translate(pos.x, pos.y, pos.z);
m_projection.to_uniform(m_obj_program.uniform("projection"));
m_modelview.to_uniform(m_obj_program.uniform("modelview"));
glUniform4f(m_obj_program.uniform("ambient"), 0, 0, 1, 1);
glUniform4f(m_obj_program.uniform("diffuse"), 0, 0, 1, 1);
glUniform4f(m_obj_program.uniform("specular"), 1, 1, 1, 1);
glUniform1f(m_obj_program.uniform("shininess"), 1);
for (int i = 0; i < NUM_SPHERE_SLICES; i++)
{
glDrawElementsBaseVertex(GL_TRIANGLE_STRIP,
2 * ((NUM_SPHERE_SLICES / 2) + 1),
GL_UNSIGNED_SHORT,
NULL,
i * ((NUM_SPHERE_SLICES / 2) + 1));
}
m_modelview.pop();
glDisableVertexAttribArray(0);
glDisableVertexAttribArray(1);
}
void Client::draw_overlay()
{
/* draw overlay map */

3
src/client/Client.h
View File

@ -33,6 +33,7 @@ class Client
void recenter_cursor();
void draw_player(refptr<Player> player);
void draw_map();
void draw_shot(refptr<Shot> shot);
void draw_overlay();
void draw_sky();
void draw_lava();
@ -67,6 +68,8 @@ class Client
GLBuffer m_tex_quad_attributes;
GLBuffer m_quad_attributes;
GLBuffer m_shot_ring_attributes;
GLBuffer m_sphere_attributes;
GLBuffer m_sphere_indices;
refptr<Network> m_net_client;
bool m_client_has_focus;
sf::Texture m_lava_texture;