/**
* Calculates the inverse of pM and stores the result in
* pOut.
* @Return Returns NULL if there is no inverse, else pOut
*/
kmMat4* const kmMat4Inverse(kmMat4* pOut, const kmMat4* pM)
{
kmMat4 inv;
kmMat4Assign(&inv, pM);
kmMat4 tmp;
kmMat4Identity(&tmp);
if(gaussj(&inv, &tmp) == KM_FALSE) {
return NULL;
}
kmMat4Assign(pOut, &inv);
return pOut;
}
void kmGLPushMatrix(void)
{
kmMat4 top;
lazyInitialize(); //Initialize the stacks if they haven't been already
//Duplicate the top of the stack (i.e the current matrix)
kmMat4Assign(&top, current_stack->top);
km_mat4_stack_push(current_stack, &top);
}
void kmGLPushMatrix(void)
{
kmMat4 top;
km_mat4_stack_context *current_context = lazyInitializeCurrentContext();
/*Duplicate the top of the stack (i.e the current matrix) */
kmMat4Assign(&top, current_context->current_stack->top);
km_mat4_stack_push(current_context->current_stack, &top);
}
void kmGLGetMatrix(kmGLEnum mode, kmMat4* pOut)
{
lazyInitialize();
switch(mode)
{
case KM_GL_MODELVIEW:
kmMat4Assign(pOut, modelview_matrix_stack.top);
break;
case KM_GL_PROJECTION:
kmMat4Assign(pOut, projection_matrix_stack.top);
break;
case KM_GL_TEXTURE:
kmMat4Assign(pOut, texture_matrix_stack.top);
break;
default:
assert(1 && "Invalid matrix mode specified"); //TODO: Proper error handling
break;
}
}
void kmGLGetMatrix(kmGLEnum mode, kmMat4* pOut)
{
km_mat4_stack_context *current_context = lazyInitializeCurrentContext();
switch(mode)
{
case KM_GL_MODELVIEW:
kmMat4Assign(pOut, current_context->modelview_matrix_stack.top);
break;
case KM_GL_PROJECTION:
kmMat4Assign(pOut, current_context->projection_matrix_stack.top);
break;
case KM_GL_TEXTURE:
kmMat4Assign(pOut, current_context->texture_matrix_stack.top);
break;
default:
assert(1 && "Invalid matrix mode specified"); /*TODO: Proper error handling*/
break;
}
}
void km_mat4_stack_push(km_mat4_stack* stack, const kmMat4* item)
{
stack->top = &stack->stack[stack->item_count];
kmMat4Assign(stack->top, item);
stack->item_count++;
if(stack->item_count >= stack->capacity){
stack->capacity += INCREMENT;
stack->stack = (kmMat4*)realloc(stack->stack,stack->capacity*sizeof(kmMat4));
stack->top = &stack->stack[stack->item_count - 1];
}
}
void glPrintf(float x, float y, const char *fmt, ...)
{
char text[256];
va_list ap;
va_start(ap, fmt);
vsprintf(text, fmt, ap);
va_end(ap);
glUseProgram(__glp.printProg);
kmMat4Assign(&__glp.otm, &__glp.opm);
kmMat4Translation(&__glp.t, x, y, -1);
kmMat4Multiply(&__glp.otm, &__glp.otm, &__glp.t);
glEnable(GL_BLEND);
glDisable(GL_DEPTH_TEST);
glBindTexture(GL_TEXTURE_2D, __glp.fonttex);
glEnableVertexAttribArray(__glp.vert_attrib);
glBindBuffer(GL_ARRAY_BUFFER, __glp.quadvbo);
glVertexAttribPointer(__glp.vert_attrib, 3, GL_FLOAT, GL_FALSE, 0, 0);
glEnableVertexAttribArray(__glp.uv_attrib);
glBindBuffer(GL_ARRAY_BUFFER, __glp.texvbo);
glVertexAttribPointer(__glp.uv_attrib, 2, GL_FLOAT, GL_FALSE, 0, 0);
glUniform1i(__glp.texture_uniform, 0);
for (int n = 0; n < strlen(text); n++) {
int c = (int)text[n];
float cx = c % 16;
float cy = (int)(c / 16.0);
cy = cy * (1. / 16);
cx = cx * (1. / 16);
glUniformMatrix4fv(__glp.opm_uniform, 1, GL_FALSE, (GLfloat *) & __glp.otm);
glUniform1f(__glp.cx_uniform, cx);
glUniform1f(__glp.cy_uniform, cy);
glDrawArrays(GL_TRIANGLES, 0, 6);
kmMat4Translation(&__glp.t, 16, 0, 0);
kmMat4Multiply(&__glp.otm, &__glp.otm, &__glp.t);
}
glDisable(GL_BLEND);
glEnable(GL_DEPTH_TEST);
glDisableVertexAttribArray(__glp.uv_attrib);
glDisableVertexAttribArray(__glp.vert_attrib);
}
void km_mat4_stack_push(km_mat4_stack* stack, const kmMat4* item)
{
stack->top = &stack->stack[stack->item_count];
kmMat4Assign(stack->top, item);
stack->item_count++;
if(stack->item_count >= stack->capacity)
{
kmMat4* temp = NULL;
stack->capacity += INCREMENT;
temp = stack->stack;
stack->stack = (kmMat4*) malloc(stack->capacity*sizeof(kmMat4));
memcpy(stack->stack, temp, sizeof(kmMat4)*(stack->capacity - INCREMENT));
free(temp);
stack->top = &stack->stack[stack->item_count - 1];
}
}
kmMat4 *nodeToWorldTransform()
{
kmMat4 *transform = get_transform();
kmMat4Assign(_nodeToWorldTransform, transform); //获取nodeToWorld矩阵
auto p = m_parent;
if (nullptr != p)
{
if (p->hasComponent<KKTransform2DComponent>())
{
kmMat4Multiply(_nodeToWorldTransform, p->getComponent<KKTransform2DComponent>()->nodeToWorldTransform(), _nodeToWorldTransform);//矩阵相乘
p = p->getComponent<KKTransform2DComponent>()->get_parent();
}
}
else
{
KKASSERT(mEntity, "compnent not activated");
KKSceneManager *sceneMgr = mEntity->getEntityManager()->getSceneManager();
kmMat4Multiply(_nodeToWorldTransform, _nodeToWorldTransform, sceneMgr->currentCameraMatrix());
}
// kmMat4* transform = get_transform();
// kmMat4Assign(_nodeToWorldTransform, transform);
//
// KKEntity* parent = m_parent;
// if (parent != NULL)
// {
// if (parent->hasComponent<KKTransform2DComponent>())
// {
// kmMat4Multiply(_nodeToWorldTransform, parent->getComponent<KKTransform2DComponent>()->nodeToWorldTransform(),_nodeToWorldTransform);
// parent = parent->getComponent<KKTransform2DComponent>()->get_parent();
// }
// }
// else
// {
// KKSceneManager* sceneMgr = mEntity->getEntityManager()->getSceneManager();
// kmMat4Multiply(_nodeToWorldTransform, _nodeToWorldTransform, sceneMgr->currentCameraMatrix());
// }
return _nodeToWorldTransform;
}
void BaseRenderer::render(Scene& scene) {
on_start_render(scene);
//FIXME: This is ugly and inconsistent
scene.active_camera().apply(&modelview().top());
kmMat4Assign(&projection().top(), &scene.active_camera().projection_matrix());
for(Scene::iterator it = scene.begin(); it != scene.end(); ++it) {
Object& object = static_cast<Object&>(*it);
if(pre_visit(object)) {
(*this)(object);
post_visit(object);
}
}
//Reset the modelview and projection for the overlay
kmMat4Identity(&modelview().top());
kmMat4Identity(&projection().top());
/*
Once the entire scene has been rendered, it's time to handle the
overlays.
*/
for(uint32_t i = 0; i < scene.overlay_count(); ++i) {
Overlay& overlay = scene.overlay_ordered_by_zindex(i);
projection().push();
for(Scene::iterator it = overlay.begin(); it != overlay.end(); ++it) {
Object& object = static_cast<Object&>(*it);
if(pre_visit(object)) {
(*this)(object);
post_visit(object);
}
}
projection().pop();
}
on_finish_render(scene);
}
void drawSprite(float x, float y, float w, float h, float a, int tex)
{
glUseProgram(__spr.spriteProg);
kmMat4Assign(&__spr.otm, &__spr.opm);
kmMat4Translation(&__spr.t, x, y, -1); // support z layers?
kmMat4RotationZ(&__spr.r,a);
kmMat4Multiply(&__spr.t,&__spr.t,&__spr.r);
kmMat4Multiply(&__spr.otm, &__spr.otm, &__spr.t);
glEnable(GL_BLEND);
glDisable(GL_DEPTH_TEST);
glBindTexture(GL_TEXTURE_2D, tex);
glEnableVertexAttribArray(__spr.vert_attrib);
glBindBuffer(GL_ARRAY_BUFFER, __spr.quadvbo);
glVertexAttribPointer(__spr.vert_attrib, 3, GL_FLOAT, GL_FALSE, 0, 0);
glEnableVertexAttribArray(__spr.uv_attrib);
glBindBuffer(GL_ARRAY_BUFFER, __spr.texvbo);
glVertexAttribPointer(__spr.uv_attrib, 2, GL_FLOAT, GL_FALSE, 0, 0);
glUniform1i(__spr.texture_uniform, 0);
glUniform2f(__spr.u_size, w,h);
glUniformMatrix4fv(__spr.opm_uniform, 1, GL_FALSE, (GLfloat *) & __spr.otm);
glDrawArrays(GL_TRIANGLES, 0, 6);
glDisable(GL_BLEND);
glEnable(GL_DEPTH_TEST);
glDisableVertexAttribArray(__glp.uv_attrib);
glDisableVertexAttribArray(__glp.vert_attrib);
}
int main()
{
lightDir.x=0.5;
lightDir.y=.7;
lightDir.z=-0.5;
kmVec3Normalize(&lightDir,&lightDir);
// creates a window and GLES context
// create a window and GLES context
if (!glfwInit())
exit(EXIT_FAILURE);
window = glfwCreateWindow(width, height, "I N V A D E R S ! ! !", NULL, NULL);
if (!window) {
glfwTerminate();
exit(EXIT_FAILURE);
}
glfwSetWindowSizeCallback(window,window_size_callback);
glfwMakeContextCurrent(window);
// all the shaders have at least texture unit 0 active so
// activate it now and leave it active
glActiveTexture(GL_TEXTURE0);
// The obj shapes and their textures are loaded
cubeTex = loadPNG("resources/textures/dice.png");
loadObj(&cubeObj, "resources/models/cube.gbo",
"resources/shaders/textured.vert", "resources/shaders/textured.frag");
shipTex = loadPNG("resources/textures/shipv2.png");
loadObjCopyShader(&shipObj,"resources/models/ship.gbo",&cubeObj);
alienTex = loadPNG("resources/textures/alien.png");
loadObjCopyShader(&alienObj, "resources/models/alien.gbo", &cubeObj);
shotTex = loadPNG("resources/textures/shot.png");
loadObjCopyShader(&shotObj, "resources/models/shot.gbo", &cubeObj);
expTex = loadPNG("resources/textures/explosion.png");
playerPos.x = 0;
playerPos.y = 0;
playerPos.z = 0;
kmMat4Identity(&view);
pEye.x = 0;
pEye.y = 2;
pEye.z = 4;
pCenter.x = 0;
pCenter.y = 0;
pCenter.z = -5;
pUp.x = 0;
pUp.y = 1;
pUp.z = 0;
kmMat4LookAt(&view, &pEye, &pCenter, &pUp);
// projection matrix, as distance increases
// the way the model is drawn is effected
kmMat4Identity(&projection);
kmMat4PerspectiveProjection(&projection, 45,
(float)width/ height, 0.1, 1000);
glViewport(0, 0, width,height);
// these two matrices are pre combined for use with each model render
kmMat4Assign(&vp, &projection);
kmMat4Multiply(&vp, &vp, &view);
// initialises glprint's matrix shader and texture
initGlPrint(width,height);
font1=createFont("resources/textures/font.png",0,256,16,16,16);
font2=createFont("resources/textures/bigfont.png",32,512,9.5,32,48);
glCullFace(GL_BACK);
glEnable(GL_CULL_FACE);
glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
glDisable(GL_BLEND); // only used by glprintf
glEnable(GL_DEPTH_TEST);
int num_frames = 0;
bool quit = false;
resetAliens();
for (int n = 0; n < MAX_PLAYER_SHOTS; n++) {
playerShots[n].alive = false;
}
initPointClouds("resources/shaders/particle.vert",
"resources/shaders/particle.frag",(float)width/24.0);
for (int n = 0; n < MAX_ALIENS; n++) {
aliens[n].explosion=createPointCloud(40);
resetExposion(aliens[n].explosion); // sets initials positions
}
glClearColor(0, .5, 1, 1);
while (!quit) { // the main loop
clock_gettime(0,&ts); // note the time BEFORE we start to render the current frame
glfwPollEvents();
if (glfwGetKey(window,GLFW_KEY_ESCAPE)==GLFW_PRESS || glfwWindowShouldClose(window))
quit = true;
float rad; // radians rotation based on frame counter
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
frame++;
rad = frame * (0.0175f * 2);
//kmMat4Identity(&model);
kmMat4Translation(&model, playerPos.x, playerPos.y, playerPos.z);
playerCroll +=
(PIDcal(playerRoll, playerCroll, &playerPre_error, &playerIntegral)
/ 2);
// kmMat4RotationPitchYawRoll(&model, 0, 3.1416, playerCroll * 3); //
kmMat4RotationYawPitchRoll(&rot,0,3.1416,-playerCroll*3);
kmMat4Multiply(&model, &model, &rot);
kmMat4Assign(&mvp, &vp);
kmMat4Multiply(&mvp, &mvp, &model);
kmMat4Assign(&mv, &view);
kmMat4Multiply(&mv, &mv, &model);
glBindTexture(GL_TEXTURE_2D, shipTex);
drawObj(&shipObj, &mvp, &mv, lightDir, viewDir);
glPrintf(50 + sinf(rad) * 16, 240 + cosf(rad) * 16,
font2,"frame=%i", frame);
kmVec3 tmp;
playerFireCount--;
if (glfwGetKey(window,GLFW_KEY_LEFT_CONTROL)==GLFW_PRESS && playerFireCount < 0) {
struct playerShot_t *freeShot;
freeShot = getFreeShot();
if (freeShot != 0) {
playerFireCount = 15;
freeShot->alive = true;
kmVec3Assign(&freeShot->pos, &playerPos);
}
}
for (int n = 0; n < MAX_PLAYER_SHOTS; n++) {
if (playerShots[n].alive) {
playerShots[n].pos.z -= .08;
if (playerShots[n].pos.z < -10)
playerShots[n].alive = false;
//kmMat4Identity(&model);
kmMat4Translation(&model, playerShots[n].pos.x,
playerShots[n].pos.y,
playerShots[n].pos.z);
//kmMat4RotationPitchYawRoll(&model, rad * 4, 0,
// -rad * 4);
kmMat4RotationYawPitchRoll(&rot,rad*4,0,-rad*4);
kmMat4Multiply(&model,&model,&rot);
kmMat4Assign(&mvp, &vp);
kmMat4Multiply(&mvp, &mvp, &model);
kmMat4Assign(&mv, &view);
kmMat4Multiply(&mv, &mv, &model);
glBindTexture(GL_TEXTURE_2D, shotTex);
drawObj(&shotObj, &mvp, &mv, lightDir, viewDir);
}
}
playerRoll = 0;
if (glfwGetKey(window,GLFW_KEY_LEFT)==GLFW_PRESS && playerPos.x > -10) {
playerPos.x -= 0.1;
playerRoll = .2;
}
if (glfwGetKey(window,GLFW_KEY_RIGHT)==GLFW_PRESS && playerPos.x < 10) {
playerPos.x += 0.1;
playerRoll = -.2;
}
pEye.x = playerPos.x * 1.25;
pCenter.x = playerPos.x;
pCenter.y = playerPos.y + 1;
pCenter.z = playerPos.z;
int deadAliens;
deadAliens = 0;
for (int n = 0; n < MAX_ALIENS; n++) {
if (aliens[n].alive == true) {
//kmMat4Identity(&model);
kmMat4Translation(&model, aliens[n].pos.x,
aliens[n].pos.y, aliens[n].pos.z);
//kmMat4RotationPitchYawRoll(&model, -.4, 0, 0);
kmMat4RotationYawPitchRoll(&rot,.2,0,0);
kmMat4Multiply(&model,&model,&rot);
kmMat4Assign(&mvp, &vp);
kmMat4Multiply(&mvp, &mvp, &model);
kmMat4Assign(&mv, &view);
kmMat4Multiply(&mv, &mv, &model);
glBindTexture(GL_TEXTURE_2D, alienTex);
drawObj(&alienObj, &mvp, &mv, lightDir, viewDir);
kmVec3 d;
for (int i = 0; i < MAX_PLAYER_SHOTS; i++) {
kmVec3Subtract(&d, &aliens[n].pos,
&playerShots[i].pos);
if (kmVec3Length(&d) < .7
&& playerShots[i].alive) {
aliens[n].alive = false;
playerShots[i].alive = false;
aliens[n].exploding = true;
resetExposion(aliens[n].explosion);
}
}
}
if (aliens[n].alive != true && aliens[n].exploding != true) {
deadAliens++;
}
}
if (deadAliens == MAX_ALIENS) {
resetAliens();
}
// draw explosions after ALL aliens
for (int n = 0; n < MAX_ALIENS; n++) {
if (aliens[n].exploding==true) {
kmMat4Identity(&model);
kmMat4Translation(&model, aliens[n].pos.x,
aliens[n].pos.y, aliens[n].pos.z);
kmMat4Assign(&mvp, &vp);
kmMat4Multiply(&mvp, &mvp, &model);
glBindTexture(GL_TEXTURE_2D, expTex);
drawPointCloud(aliens[n].explosion, &mvp);
aliens[n].explosion->tick=aliens[n].explosion->tick+0.05;
if (aliens[n].explosion->tick>1.25) {
aliens[n].exploding=false;
} else {
// update the explosion
for (int i=0; i<aliens[n].explosion->totalPoints; i++) {
float t;
t=aliens[n].explosion->tick;
if (i>aliens[n].explosion->totalPoints/2) t=t/2.0;
aliens[n].explosion->pos[i*3]=aliens[n].explosion->vel[i*3] * t;
aliens[n].explosion->pos[i*3+1]=aliens[n].explosion->vel[i*3+1] * t;
aliens[n].explosion->pos[i*3+2]=aliens[n].explosion->vel[i*3+2] * t;
}
}
}
}
// move camera
kmMat4LookAt(&view, &pEye, &pCenter, &pUp);
kmMat4Assign(&vp, &projection);
kmMat4Multiply(&vp, &vp, &view);
kmVec3Subtract(&viewDir,&pEye,&pCenter);
kmVec3Normalize(&viewDir,&viewDir);
// dump values
glPrintf(100, 280, font1,"eye %3.2f %3.2f %3.2f ", pEye.x, pEye.y, pEye.z);
glPrintf(100, 296, font1,"centre %3.2f %3.2f %3.2f ", pCenter.x, pCenter.y,
pCenter.z);
glPrintf(100, 340, font1,"frame %i %i ", frame, frame % 20);
glfwSwapBuffers(window);
ts.tv_nsec+=20000000; // 1000000000 / 50 = 50hz less time to render the frame
//thrd_sleep(&ts,NULL); // tinycthread
usleep(20000); // while I work out why tinycthread that was working isnt.... :/
}
glfwDestroyWindow(window);
glfwTerminate();
return 0;
}
void kmGLLoadMatrix(const kmMat4* pIn)
{
lazyInitialize();
kmMat4Assign(current_stack->top, pIn);
}
void kmGLLoadMatrix(const kmMat4* pIn)
{
km_mat4_stack_context *current_context = lazyInitializeCurrentContext();
kmMat4Assign(current_context->current_stack->top, pIn);
}
int main()
{
lightDir.x=0.5;
lightDir.y=.7;
lightDir.z=-0.5;
kmVec3Normalize(&lightDir,&lightDir);
// creates a window and GLES context
if (makeContext() != 0)
exit(-1);
// all the shaders have at least texture unit 0 active so
// activate it now and leave it active
glActiveTexture(GL_TEXTURE0);
// The obj shapes and their textures are loaded
cubeTex = loadPNG("resources/textures/dice.png");
loadObj(&cubeObj, "resources/models/cube.gbo",
"resources/shaders/textured.vert", "resources/shaders/textured.frag");
shipTex = loadPNG("resources/textures/shipv2.png");
loadObjCopyShader(&shipObj,"resources/models/ship.gbo",&cubeObj);
alienTex = loadPNG("resources/textures/alien.png");
loadObjCopyShader(&alienObj, "resources/models/alien.gbo", &cubeObj);
shotTex = loadPNG("resources/textures/shot.png");
loadObjCopyShader(&shotObj, "resources/models/shot.gbo", &cubeObj);
expTex = loadPNG("resources/textures/explosion.png");
playerPos.x = 0;
playerPos.y = 0;
playerPos.z = 0;
kmMat4Identity(&view);
pEye.x = 0;
pEye.y = 2;
pEye.z = 4;
pCenter.x = 0;
pCenter.y = 0;
pCenter.z = -5;
pUp.x = 0;
pUp.y = 1;
pUp.z = 0;
kmMat4LookAt(&view, &pEye, &pCenter, &pUp);
// projection matrix, as distance increases
// the way the model is drawn is effected
kmMat4Identity(&projection);
kmMat4PerspectiveProjection(&projection, 45,
(float)getDisplayWidth() / getDisplayHeight(), 0.1, 100);
glViewport(0, 0, getDisplayWidth(), getDisplayHeight());
// these two matrices are pre combined for use with each model render
kmMat4Assign(&vp, &projection);
kmMat4Multiply(&vp, &vp, &view);
// initialises glprint's matrix shader and texture
initGlPrint(getDisplayWidth(), getDisplayHeight());
font1=createFont("resources/textures/font.png",0,256,16,16,16);
font2=createFont("resources/textures/bigfont.png",32,512,9.5,32,48);
glCullFace(GL_BACK);
glEnable(GL_CULL_FACE);
glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
glDisable(GL_BLEND); // only used by glprintf
glEnable(GL_DEPTH_TEST);
struct timeval t, ta, t1, t2; // fps stuff
gettimeofday(&t1, NULL);
int num_frames = 0;
bool quit = false;
mouse = getMouse();
keys = getKeys();
resetAliens();
for (int n = 0; n < MAX_PLAYER_SHOTS; n++) {
playerShots[n].alive = false;
}
initPointClouds("resources/shaders/particle.vert",
"resources/shaders/particle.frag",(float)getDisplayWidth()/24.0);
for (int n = 0; n < MAX_ALIENS; n++) {
aliens[n].explosion=createPointCloud(40);
resetExposion(aliens[n].explosion); // sets initials positions
}
while (!quit) { // the main loop
doEvents(); // update mouse and key arrays
// mask of 4 is right mouse
if (keys[KEY_ESC])
quit = true;
glClearColor(0, .5, 1, 1);
// render between two gettimeofday calls so
// we can sleep long enough to roughly sync
// to ~60fps but not on the pi!
// TODO find something a tad more elegent
long i;
gettimeofday(&t, NULL);
i = t.tv_sec * 1e6 + t.tv_usec;
// render();
float rad; // radians rotation based on frame counter
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
frame++;
rad = frame * (0.0175f * 2);
kmMat4Identity(&model);
kmMat4Translation(&model, playerPos.x, playerPos.y, playerPos.z);
playerCroll +=
(PIDcal(playerRoll, playerCroll, &playerPre_error, &playerIntegral)
/ 2);
kmMat4RotationPitchYawRoll(&model, 0, 3.1416, playerCroll * 3); //
kmMat4Assign(&mvp, &vp);
kmMat4Multiply(&mvp, &mvp, &model);
kmMat4Assign(&mv, &view);
kmMat4Multiply(&mv, &mv, &model);
glBindTexture(GL_TEXTURE_2D, shipTex);
drawObj(&shipObj, &mvp, &mv, lightDir, viewDir);
glPrintf(50 + sinf(rad) * 16, 240 + cosf(rad) * 16,
font2,"frame=%i fps=%3.2f", frame, lfps);
kmVec3 tmp;
playerFireCount--;
if (keys[KEY_LCTRL] && playerFireCount < 0) {
struct playerShot_t *freeShot;
freeShot = getFreeShot();
if (freeShot != 0) {
playerFireCount = 15;
freeShot->alive = true;
kmVec3Assign(&freeShot->pos, &playerPos);
}
}
for (int n = 0; n < MAX_PLAYER_SHOTS; n++) {
if (playerShots[n].alive) {
playerShots[n].pos.z -= .08;
if (playerShots[n].pos.z < -10)
playerShots[n].alive = false;
kmMat4Identity(&model);
kmMat4Translation(&model, playerShots[n].pos.x,
playerShots[n].pos.y,
playerShots[n].pos.z);
kmMat4RotationPitchYawRoll(&model, rad * 4, 0,
-rad * 4);
kmMat4Assign(&mvp, &vp);
kmMat4Multiply(&mvp, &mvp, &model);
kmMat4Assign(&mv, &view);
kmMat4Multiply(&mv, &mv, &model);
glBindTexture(GL_TEXTURE_2D, shotTex);
drawObj(&shotObj, &mvp, &mv, lightDir, viewDir);
}
}
playerRoll = 0;
if (keys[KEY_CURSL] && playerPos.x > -10) {
playerPos.x -= 0.1;
playerRoll = .2;
}
if (keys[KEY_CURSR] && playerPos.x < 10) {
playerPos.x += 0.1;
playerRoll = -.2;
}
pEye.x = playerPos.x * 1.25;
pCenter.x = playerPos.x;
pCenter.y = playerPos.y + 1;
pCenter.z = playerPos.z;
int deadAliens;
deadAliens = 0;
for (int n = 0; n < MAX_ALIENS; n++) {
if (aliens[n].alive == true) {
kmMat4Identity(&model);
kmMat4Translation(&model, aliens[n].pos.x,
aliens[n].pos.y, aliens[n].pos.z);
kmMat4RotationPitchYawRoll(&model, -.4, 0, 0);
kmMat4Assign(&mvp, &vp);
kmMat4Multiply(&mvp, &mvp, &model);
kmMat4Assign(&mv, &view);
kmMat4Multiply(&mv, &mv, &model);
glBindTexture(GL_TEXTURE_2D, alienTex);
drawObj(&alienObj, &mvp, &mv, lightDir, viewDir);
kmVec3 d;
for (int i = 0; i < MAX_PLAYER_SHOTS; i++) {
kmVec3Subtract(&d, &aliens[n].pos,
&playerShots[i].pos);
if (kmVec3Length(&d) < .7
&& playerShots[i].alive) {
aliens[n].alive = false;
playerShots[i].alive = false;
aliens[n].exploding = true;
resetExposion(aliens[n].explosion);
}
}
}
if (aliens[n].alive != true && aliens[n].exploding != true) {
deadAliens++;
}
}
if (deadAliens == MAX_ALIENS) {
resetAliens();
}
// draw explosions after ALL aliens
for (int n = 0; n < MAX_ALIENS; n++) {
if (aliens[n].exploding==true) {
kmMat4Identity(&model);
kmMat4Translation(&model, aliens[n].pos.x,
aliens[n].pos.y, aliens[n].pos.z);
kmMat4Assign(&mvp, &vp);
kmMat4Multiply(&mvp, &mvp, &model);
glBindTexture(GL_TEXTURE_2D, expTex);
drawPointCloud(aliens[n].explosion, &mvp);
aliens[n].explosion->tick=aliens[n].explosion->tick+0.05;
if (aliens[n].explosion->tick>1.25) {
aliens[n].exploding=false;
} else {
// update the explosion
for (int i=0; i<aliens[n].explosion->totalPoints; i++) {
float t;
t=aliens[n].explosion->tick;
if (i>aliens[n].explosion->totalPoints/2) t=t/2.0;
aliens[n].explosion->pos[i*3]=aliens[n].explosion->vel[i*3] * t;
aliens[n].explosion->pos[i*3+1]=aliens[n].explosion->vel[i*3+1] * t;
aliens[n].explosion->pos[i*3+2]=aliens[n].explosion->vel[i*3+2] * t;
}
}
}
}
// move camera
kmMat4LookAt(&view, &pEye, &pCenter, &pUp);
kmMat4Assign(&vp, &projection);
kmMat4Multiply(&vp, &vp, &view);
kmVec3Subtract(&viewDir,&pEye,&pCenter);
kmVec3Normalize(&viewDir,&viewDir);
// dump values
glPrintf(100, 280, font1,"eye %3.2f %3.2f %3.2f ", pEye.x, pEye.y, pEye.z);
glPrintf(100, 296, font1,"centre %3.2f %3.2f %3.2f ", pCenter.x, pCenter.y,
pCenter.z);
glPrintf(100, 320, font1,"mouse %i,%i %i ", mouse[0], mouse[1], mouse[2]);
glPrintf(100, 340, font1,"frame %i %i ", frame, frame % 20);
swapBuffers();
gettimeofday(&ta, NULL);
long j = (ta.tv_sec * 1e6 + ta.tv_usec);
i = j - i;
if (i < 0)
i = 1000000; // pass through - slower that 60fps
if (i < 16000)
usleep(16000 - i);
// every 10 frames average the time taken and store
// fps value for later printing with glprintf
if (++num_frames % 10 == 0) {
gettimeofday(&t2, NULL);
float dtf =
t2.tv_sec - t1.tv_sec + (t2.tv_usec -
t1.tv_usec) * 1e-6;
lfps = num_frames / dtf;
num_frames = 0;
t1 = t2;
}
}
closeContext();
return 0;
}
