void templateAppDraw( void ) {
if( game_state == 2 ) {
free_level();
load_level();
}
glClearColor( 1.0f, 1.0f, 1.0f, 1.0f );
glClear( GL_DEPTH_BUFFER_BIT | GL_COLOR_BUFFER_BIT );
GFX_set_matrix_mode( PROJECTION_MATRIX );
GFX_load_identity();
GFX_set_perspective( 80.0f,
( float )viewport_matrix[ 2 ] / ( float )viewport_matrix[ 3 ],
0.1f,
50.0f,
-90.0f );
GFX_set_matrix_mode( MODELVIEW_MATRIX );
GFX_load_identity();
/* Linearly interpolate the accelerometer values to get a smooth transition. */
next_accelerometer.x = accelerometer.x * 0.1f + next_accelerometer.x * 0.9f;
next_accelerometer.y = accelerometer.y * 0.1f + next_accelerometer.y * 0.9f;
/* Assign the current Y rotation of the accelerometer to the Z rotation of the camera,
* multiplied by the accelerometer sensitivity factor. */
rotz += next_accelerometer.y * sensitivity;
/* The forward vector of the ball. */
vec3 forward = { 0.0f, 1.0f, 0.0f },
/* The current direction vector of the ball. Basically, this is the
forward vector rotated by the cameraÕs Z rotation. */
direction;
/* If the game is running, let the user move the ball. */
if( !game_state ) {
/* Pre-calculate a few variables before rotating the forward vector by the cameraÕs Z rotation. */
float r = rotz * DEG_TO_RAD,
c = cosf( r ),
s = sinf( r );
/* Rotate the forward vector and store the result into the
direction variable. Because both vectors are already normalized,
thereÕs no need to re-normalize them again. */
direction.x = c * forward.y - s * forward.x;
direction.y = s * forward.y + c * forward.x;
float speed = CLAMP( ( -next_accelerometer.x * sensitivity ) * ball_speed,
-ball_speed,
ball_speed );
/* Assign the direction vector multiplied by the current speed to the
angular velocity of the ball. */
player->btrigidbody->setAngularVelocity( btVector3( direction.x * speed,
direction.y * speed,
0.0f ) );
/* Activate the rigid body to make sure that the angular velocity
will be applied. */
player->btrigidbody->setActivationState( ACTIVE_TAG );
}
next_eye.x = player->location.x +
distance *
cosf( rotx * DEG_TO_RAD ) *
sinf( rotz * DEG_TO_RAD );
next_eye.y = player->location.y -
distance *
cosf( rotx * DEG_TO_RAD ) *
cosf( rotz * DEG_TO_RAD );
next_eye.z = player->location.z +
distance *
sinf( rotx * DEG_TO_RAD );
player->location.z += player->dimension.z;
btVector3 p1( player->location.x,
player->location.y,
player->location.z ),
p2( next_eye.x,
next_eye.y,
next_eye.z );
ClosestNotMeRayResultCallback back_ray( player->btrigidbody,
p1,
p2 );
dynamicsworld->rayTest( p1,
p2,
back_ray );
if( back_ray.hasHit() ) {
back_ray.m_hitNormalWorld.normalize();
next_eye.x = back_ray.m_hitPointWorld.x() +
( back_ray.m_hitNormalWorld.x() * 0.1f );
next_eye.y = back_ray.m_hitPointWorld.y() +
( back_ray.m_hitNormalWorld.y() * 0.1f );
next_eye.z = back_ray.m_hitPointWorld.z() +
( back_ray.m_hitNormalWorld.z()* 0.1f );
}
eye.x = next_eye.x * 0.05f + eye.x * 0.95f;
eye.y = next_eye.y * 0.05f + eye.y * 0.95f;
eye.z = next_eye.z * 0.05f + eye.z * 0.95f;
/* Calculate the direction vector from the player to the current eye location. */
vec3_diff( &direction, &player->location, &eye );
/* Normalize the direction vector. */
vec3_normalize( &direction, &direction );
AUDIO_set_listener( &eye, &direction, &up );
GFX_look_at( &eye,
&player->location,
&up );
build_frustum( frustum,
GFX_get_modelview_matrix(),
GFX_get_projection_matrix() );
unsigned int i = 0;
while( i != obj->n_objmesh ) {
OBJMESH *objmesh = &obj->objmesh[ i ];
objmesh->distance = sphere_distance_in_frustum( frustum,
&objmesh->location,
objmesh->radius );
if( objmesh->distance && objmesh->visible )
{
GFX_push_matrix();
/* Check if the current objmesh name contains Ògem.Ó
* If yes, donÕt ask Bullet for the transformation matrix and handle the position and
* rotation manually. */
if( strstr( objmesh->name, "gem" ) ) {
GFX_translate( objmesh->location.x,
objmesh->location.y,
objmesh->location.z );
objmesh->rotation.z += 1.0f;
GFX_rotate( objmesh->rotation.z, 0.0f, 0.0f, 1.0f );
}
else if( objmesh->btrigidbody )
{
mat4 mat;
objmesh->btrigidbody->getWorldTransform().getOpenGLMatrix( ( float * )&mat );
memcpy( &objmesh->location, ( vec3 * )&mat.m[ 3 ], sizeof( vec3 ) );
GFX_multiply_matrix( &mat );
}
else
{
GFX_translate( objmesh->location.x,
objmesh->location.y,
objmesh->location.z );
}
OBJ_draw_mesh( obj, i );
GFX_pop_matrix();
}
++i;
}
dynamicsworld->stepSimulation( 1.0f / 60.0f );
GFX_set_matrix_mode( PROJECTION_MATRIX );
GFX_load_identity();
float half_width = ( float )viewport_matrix[ 2 ] * 0.5f,
half_height = ( float )viewport_matrix[ 3 ] * 0.5f;
GFX_set_orthographic_2d( -half_width,
half_width,
-half_height,
half_height );
GFX_rotate( -90.0f, 0.0f, 0.0f, 1.0f );
GFX_translate( -half_height, -half_width, 0.0f );
GFX_set_matrix_mode( MODELVIEW_MATRIX );
GFX_load_identity();
vec4 font_color = { 0.0f, 0.0f, 0.0f, 1.0f };
char gem_str [ MAX_CHAR ] = {""},
time_str [ MAX_CHAR ] = {""},
level_str[ MAX_CHAR ] = {""};
if( game_state ) {
sprintf( level_str, "Level Clear!" );
FONT_print( font_big,
viewport_matrix[ 3 ] * 0.5f - FONT_length( font_big, level_str ) * 0.5f + 4.0f,
viewport_matrix[ 2 ] - font_big->font_size * 1.5f - 4.0f,
level_str,
&font_color );
/* Yellow. */
font_color.x = 1.0f;
font_color.y = 1.0f;
font_color.z = 0.0f;
FONT_print( font_big,
viewport_matrix[ 3 ] * 0.5f - FONT_length( font_big, level_str ) * 0.5f,
viewport_matrix[ 2 ] - font_big->font_size * 1.5f,
level_str,
&font_color );
}
font_color.x = 0.0f;
font_color.y = 0.0f;
font_color.z = 0.0f;
sprintf( gem_str, "Gem Points:%02d", gem_points );
sprintf( time_str, "Game Time:%02.2f", game_time * 0.1f );
FONT_print( font_small,
viewport_matrix[ 3 ] - FONT_length( font_small, gem_str ) - 6.0f,
( font_small->font_size * 0.5f ),
gem_str,
&font_color );
FONT_print( font_small,
8.0f,
( font_small->font_size * 0.5f ),
time_str,
&font_color );
font_color.x = 1.0f;
font_color.y = 1.0f;
font_color.z = 0.0f;
FONT_print( font_small,
viewport_matrix[ 3 ] - FONT_length( font_small, gem_str ) - 8.0f,
( font_small->font_size * 0.5f ),
gem_str,
&font_color );
FONT_print( font_small,
6.0f,
( font_small->font_size * 0.5f ),
time_str,
&font_color );
if( !game_state ) game_time += SOUND_get_time( background_sound );
}
void templateAppDraw(void) {
glClearColor(0.5f, 0.5f, 0.5f, 1.0f);
glClear(GL_DEPTH_BUFFER_BIT | GL_COLOR_BUFFER_BIT);
gfx->set_matrix_mode(MODELVIEW_MATRIX);
gfx->load_identity();
/* First check if the direction vector on the X or Y axis was triggered
* from the user touch on the right side of the screen.
*/
if (view_delta->x || view_delta->y) {
/* If the Y is active (!=0), then add the value to the next Z
* rotation. Since you are going to interpolate the rotation, you have to
* assign the value to the next camera Z rotation.
*/
if (view_delta->y) next_rotz -= view_delta->y;
/* Same as above, but this time for the X rotation axis. In addition,
* clamp the value in the range of -180 to -90 degrees to allow the camera
* to only look from straight up to straight down.
*/
if (view_delta->x) {
next_rotx -= view_delta->x;
next_rotx = CLAMP(next_rotx, -180.0f, -90.0f);
}
/* Reset the view deltas to avoid triggering another pass inside this
* block on the next rendering pass.
*/
view_delta->x =
view_delta->y = 0.0f;
}
/* If you got a force comming from the left side of the screen. */
if (move_delta->z) {
/* Temp. variable to calculate the direction (aka forward) vector. */
vec3 direction;
/* Rotate the coordinate system to fit the current Z rotation
* of the camera.
*/
float r = rotz * DEG_TO_RAD,
c = cosf(r),
s = sinf(r);
direction->x = c * move_delta->y - s * move_delta->x;
direction->y = s * move_delta->y + c * move_delta->x;
/* Assign the direction vector to the angular velocity of the ball. */
player->btrigidbody->setAngularVelocity(btVector3(direction->y * (move_delta->z * 6.7f),
-direction->x * (move_delta->z * 6.7f),
0.0f));
/* Make sure the state of the rigid body is active in order to
* trigger the rotation.
*/
player->btrigidbody->setActivationState(ACTIVE_TAG);
}
next_eye->x = player->location->x +
distance *
cosf(rotx * DEG_TO_RAD) *
sinf(rotz * DEG_TO_RAD);
next_eye->y = player->location->y -
distance *
cosf(rotx * DEG_TO_RAD) *
cosf(rotz * DEG_TO_RAD);
next_eye->z = player->location->z +
distance *
sinf(rotx * DEG_TO_RAD);
/* Declare the starting point and end point of the collision ray.
* Basically, what you are trying to achieve is that the ray starts
* from the ball and aims straight at the next_eye position. If anthing
* collides with the ray (with the exception of the ball), you need to
* re-adjust the next_eye position to be located where this is a hit.
* This will prevent the camera from seeing through walls and insure
* that the ball is focused at all times.
*/
btVector3 p1(player->location->x,
player->location->y,
player->location->z),
p2(next_eye->x,
next_eye->y,
next_eye->z);
/* Initialize the collision ray, passing in as parameters the ball rigid
* body pointer and the start and end points of the ray.
*/
ClosestNotMeRayResultCallback back_ray(player->btrigidbody,
p1,
p2);
/* Launch the ray in 3D space. */
dynamicsworld->rayTest(p1,
p2,
back_ray);
/* If the collision ray got hit. */
if (back_ray.hasHit()) {
/* Normalize the hit point normal. */
back_ray.m_hitNormalWorld.normalize();
/* Adjust the next_eye position to be located where the collision ray
* hits inside the world. In addition, to make sure that the camera
* stays inside the scene and does not simple "stick" on the wall, add
* a slight offset based on the bit point normal. This will ensure that
* the camera next_position will always be located in front of where
* the collision ray hits.
*/
next_eye->x = back_ray.m_hitPointWorld.x() +
(back_ray.m_hitNormalWorld.x() * 0.1f);
next_eye->y = back_ray.m_hitPointWorld.y() +
(back_ray.m_hitNormalWorld.y() * 0.1f);
next_eye->z = back_ray.m_hitPointWorld.z() +
(back_ray.m_hitNormalWorld.z() * 0.1f);
}
/* Linearly interpolate the rotation between the current and the next. */
rotx = rotx * 0.9f + next_rotx * 0.1f;
rotz = rotz * 0.9f + next_rotz * 0.1f;
/* Same as for the rotation, but this time for the current eye position. */
eye = eye * 0.95f + next_eye * 0.05f;
/* Give an offset to the player Z location to make sure that the camera
* is always looking at the top of the ball and not at it's center. This
* way, even in tight corners, the user will always be able to see in front
* of the ball.
*/
player->location->z += player->dimension->z * 0.5f;
/* Feed the current eye position and player location to the GFX::look_at
* function to be able to generate the view matrix.
*/
gfx->look_at(eye,
player->location,
up);
for (auto objmesh=obj->objmesh.begin();
objmesh!=obj->objmesh.end(); ++objmesh) {
gfx->push_matrix();
mat4 mat;
objmesh->btrigidbody->getWorldTransform().getOpenGLMatrix(mat.m());
objmesh->location = vec3(mat[3], true);
gfx->multiply_matrix(mat);
glUniformMatrix4fv(program->uniform_map["MODELVIEWPROJECTIONMATRIX"].location,
1,
GL_FALSE,
gfx->get_modelview_projection_matrix().m());
objmesh->draw();
gfx->pop_matrix();
}
dynamicsworld->stepSimulation(1.0f / 60.0f);
}
void templateAppDraw( void ) {
if( game_state == 2 ) {
free_level();
load_level();
}
glClearColor( 1.0f, 1.0f, 1.0f, 1.0f );
glClear( GL_DEPTH_BUFFER_BIT | GL_COLOR_BUFFER_BIT );
GFX_set_matrix_mode( PROJECTION_MATRIX );
GFX_load_identity();
GFX_set_perspective( 80.0f,
( float )viewport_matrix[ 2 ] / ( float )viewport_matrix[ 3 ],
0.1f,
50.0f,
0.0f );
GFX_set_matrix_mode( MODELVIEW_MATRIX );
GFX_load_identity();
if(turn_left())
{
next_rotz+=1.2;
}
if(turn_right())
{
next_rotz-=1.2;
}
vec3 forward = { 0.0f, 1.0f, 0.0f },direction;
if( !game_state )
{
//Pre-calculate a few variables before rotating the forward vector by the camera's Z rotation.
float r = rotz * DEG_TO_RAD, c = cosf( r ), s = sinf( r );
//Rotate the forward vector and store the result into the direction variable. Because
//both vectors are already normalized, there's no need to re-normalize them one more time.
direction.x = c * forward.y - s * forward.x;
direction.y = s * forward.y + c * forward.x;
//Calculate the current angular velocity that is relevant to the
//accelerometer value that we are using as the force factor.
//Then clamp the result to make sure that the speed is between the minimum and
//maximum ball speed thresholds.
float speed = CLAMP( -maximum_speed,
-maximum_speed,
maximum_speed );
player->btrigidbody->setAngularVelocity( btVector3( direction.x * speed,direction.y * speed,0.0f ) );
//Activate the rigid body to make sure that the angular velocity will be applied.
player->btrigidbody->setActivationState( ACTIVE_TAG );
}
/*
if( view_delta.x || view_delta.y )
{
if( view_delta.x ) next_rotz -= view_delta.x;
if( view_delta.y )
{
next_roty += view_delta.y;
next_roty = CLAMP( next_roty, -180.0f, -90.0f );
}
view_delta.x =
view_delta.y = 0.0f;
}
if( move_delta.z )
{
vec3 direction;
float r = rotz * DEG_TO_RAD,
c = cosf( r ),
s = sinf( r );
direction.x = s * move_delta.y + c * move_delta.x;
direction.y = c * move_delta.y - s * move_delta.x;
player->btrigidbody->setAngularVelocity( 2*btVector3( -direction.y * ( move_delta.z * 6.7f ),
-direction.x * ( move_delta.z * 6.7f ),
0.0f ) );
player->btrigidbody->setActivationState( ACTIVE_TAG );
}*/
//console_print("player_x: %3.f player_y: %3.f\n",player->location.x,player->location.y);
next_eye.x = player->location.x +
distance *
cosf( roty * DEG_TO_RAD ) *
sinf( rotz * DEG_TO_RAD );
next_eye.y = player->location.y -
distance *
cosf( roty * DEG_TO_RAD ) *
cosf( rotz * DEG_TO_RAD );
next_eye.z = player->location.z +
distance *
sinf( roty * DEG_TO_RAD );
btVector3 p1( player->location.x,
player->location.y,
player->location.z ),
p2( next_eye.x,
next_eye.y,
next_eye.z );
ClosestNotMeRayResultCallback back_ray( player->btrigidbody,
p1,
p2 );
dynamicsworld->rayTest( p1,
p2,
back_ray );
if( back_ray.hasHit() )
{
back_ray.m_hitNormalWorld.normalize();
next_eye.x = back_ray.m_hitPointWorld.x() +
( back_ray.m_hitNormalWorld.x() * 0.1f );
next_eye.y = back_ray.m_hitPointWorld.y() +
( back_ray.m_hitNormalWorld.y()* 0.1f );
next_eye.z = back_ray.m_hitPointWorld.z() +
( back_ray.m_hitNormalWorld.z()* 0.1f );
}
roty = roty * 0.9f + next_roty * 0.1f;
rotz = rotz * 0.9f + next_rotz * 0.1f;
eye.x = eye.x * 0.95f + next_eye.x * 0.05f;
eye.y = eye.y * 0.95f + next_eye.y * 0.05f;
eye.z = eye.z * 0.95f + next_eye.z * 0.05f;
player->location.z += player->dimension.z * 0.5f;
/*
* needed for directional audio
*/
vec3 player_location={player->location.x,player->location.y,player->location.z};
AUDIO_set_listener( &eye, &player_location, &up );
GFX_look_at( &eye,
&player->location,
&up );
build_frustum( frustum,
GFX_get_modelview_matrix(),
GFX_get_projection_matrix() );
unsigned int i = 0;
while( i != obj->n_objmesh ) {
OBJMESH *objmesh = &obj->objmesh[ i ];
objmesh->distance = sphere_distance_in_frustum( frustum,
&objmesh->location,
objmesh->radius );
if( objmesh->distance && objmesh->visible )
{
GFX_push_matrix();
if( strstr( objmesh->name, "gem" ) ) {
GFX_translate( objmesh->location.x,
objmesh->location.y,
objmesh->location.z );
objmesh->rotation.z += 1.0f;
GFX_rotate( objmesh->rotation.z, 0.0f, 0.0f, 1.0f );
}
else if( objmesh->btrigidbody )
{
mat4 mat;
objmesh->btrigidbody->getWorldTransform().getOpenGLMatrix( ( float * )&mat );
memcpy( &objmesh->location, ( vec3 * )&mat.m[ 3 ], sizeof( vec3 ) );
GFX_multiply_matrix( &mat );
}
else
{
GFX_translate( objmesh->location.x,
objmesh->location.y,
objmesh->location.z );
}
OBJ_draw_mesh( obj, i );
GFX_pop_matrix();
}
++i;
}
if(!game_state )
{
dynamicsworld->stepSimulation( 1.0f / 60.0f );
}
GFX_set_matrix_mode( PROJECTION_MATRIX );
GFX_load_identity();
float half_width = ( float )viewport_matrix[ 2 ] * 0.5f,
half_height = ( float )viewport_matrix[ 3 ] * 0.5f;
GFX_set_orthographic_2d( -half_width,
half_width,
-half_height,
half_height );
GFX_rotate( 0.0f, 0.0f, 0.0f, 1.0f );
GFX_translate( -half_width, -half_height, 0.0f );
GFX_set_matrix_mode( MODELVIEW_MATRIX );
GFX_load_identity();
vec4 font_color = { 0.0f, 0.0f, 0.0f, 1.0f };
char gem_str [ MAX_CHAR ] = {""},
time_str [ MAX_CHAR ] = {""},
level_str[ MAX_CHAR ] = {""},
pause_str [ MAX_CHAR ] = {""};
if( game_state == 3 )
{
sprintf( pause_str, "Touch to Resume" );
FONT_print( font_big,
viewport_matrix[ 2 ] * 0.5f - FONT_length( font_big, pause_str ) * 0.5f + 4.0f,
viewport_matrix[ 3 ] * 0.7f - font_big->font_size * 1.5f - 4.0f,
pause_str,
&font_color );
/* Yellow. */
font_color.x = 1.0f;
font_color.y = 1.0f;
font_color.z = 0.0f;
FONT_print( font_big,
viewport_matrix[ 2 ] * 0.5f - FONT_length( font_big, pause_str ) * 0.5f,
viewport_matrix[ 3 ] * 0.7f - font_big->font_size * 1.5f,
pause_str,
&font_color );
}
if( game_state == 1 )
{
sprintf( level_str, "Level Clear!" );
FONT_print( font_big,
viewport_matrix[ 2 ] * 0.5f - FONT_length( font_big, level_str ) * 0.5f + 4.0f,
viewport_matrix[ 3 ] - font_big->font_size * 1.5f - 4.0f,
level_str,
&font_color );
/* Yellow. */
font_color.x = 1.0f;
font_color.y = 1.0f;
font_color.z = 0.0f;
FONT_print( font_big,
viewport_matrix[ 2 ] * 0.5f - FONT_length( font_big, level_str ) * 0.5f,
viewport_matrix[ 3 ] - font_big->font_size * 1.5f,
level_str,
&font_color );
}
font_color.x = 0.0f;
font_color.y = 0.0f;
font_color.z = 0.0f;
sprintf( gem_str, "Gem Points:%02d", gem_points );
sprintf( time_str, "Game Time:%02.2f", game_time * 0.1f );
FONT_print( font_small,
viewport_matrix[ 2 ] - FONT_length( font_small, gem_str ) - 6.0f,
( font_small->font_size * 0.5f ),
gem_str,
&font_color );
FONT_print( font_small,
8.0f,
( font_small->font_size * 0.5f ),
time_str,
&font_color );
font_color.x = 1.0f;
font_color.y = 1.0f;
font_color.z = 0.0f;
FONT_print( font_small,
viewport_matrix[ 2 ] - FONT_length( font_small, gem_str ) - 8.0f,
( font_small->font_size * 0.5f ),
gem_str,
&font_color );
FONT_print( font_small,
6.0f,
( font_small->font_size * 0.5f ),
time_str,
&font_color );
if( !game_state ) game_time += SOUND_get_time( background_sound );
}
