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-rw-r--r--main.cpp55
1 files changed, 50 insertions, 5 deletions
diff --git a/main.cpp b/main.cpp
index b653427..36ddb10 100644
--- a/main.cpp
+++ b/main.cpp
@@ -33,7 +33,7 @@ struct hit_record {
};
// TODO: reimplement
-int select(Quadtree& qt, int x, int y) {
+int _select(Quadtree& qt, int x, int y) {
y = 600-y;
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
@@ -95,9 +95,33 @@ int select(Quadtree& qt, int x, int y) {
return 0;
}
+bool select(Quadtree& qt, int x, int y, float& px, float& py, float& pz) {
+ GLint view[4] = {0};
+ GLdouble mvmatrix[16] = {0}, projmatrix[16] = {0};
+ glGetDoublev(GL_PROJECTION_MATRIX, projmatrix);
+ glGetDoublev(GL_MODELVIEW_MATRIX, mvmatrix);
+ glGetIntegerv(GL_VIEWPORT, view);
+
+ y = view[3] - y - 1;
+
+ float z;
+ glReadBuffer(GL_BACK);
+ glReadPixels(x, y, 1, 1, GL_DEPTH_COMPONENT, GL_FLOAT, &z);
+
+ GLdouble _px, _py, _pz;
+ if(gluUnProject(x, y, z, mvmatrix, projmatrix, view, &_px, &_py, &_pz) == GLU_TRUE) {
+ px = _px;
+ py = _py;
+ pz = _pz;
+ return true;
+ }
+
+ return false;
+}
+
int main(int argc, char **argv) {
- video::width = 800;
- video::height = 600;
+ video::width = 1280;
+ video::height = 720;
video::init();
font = new FTTextureFont("font.ttf");
@@ -150,6 +174,7 @@ int main(int argc, char **argv) {
unsigned int last_time = SDL_GetTicks();
/*boost::timer t;
double last_time = 0;*/
+ Vector3 selected;
while(running) {
unsigned int time = SDL_GetTicks();
//double time = t.elapsed();
@@ -157,6 +182,8 @@ int main(int argc, char **argv) {
unsigned int steps = time - last_time + 1;
//double steps = (time - last_time) * 1000;
last_time = time;
+ bool do_select = 0;
+ int sx, sy;
while(SDL_PollEvent(&event)) {
switch(event.type) {
case SDL_QUIT:
@@ -173,6 +200,7 @@ int main(int argc, char **argv) {
case SDLK_KP_PLUS:
delete qt;
qt = new Quadtree(hm->w, hm->h, heightmap, ++level);
+ level = qt->levels;
break;
case SDLK_KP_MINUS:
if(level > 0) {
@@ -190,6 +218,9 @@ int main(int argc, char **argv) {
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_WHEELUP:
@@ -255,7 +286,7 @@ int main(int argc, char **argv) {
scene.yvel -= 9.81 * steps / 85000;
if(scene.yvel < -.5)
scene.yvel = -.5;
- scene.pos.y += scene.yvel;
+ scene.pos.y += scene.yvel * steps;
if(scene.pos.y < y) {
scene.pos.y = y;
scene.yvel = 0;
@@ -304,10 +335,24 @@ int main(int argc, char **argv) {
glDisable(GL_TEXTURE_2D);
glDisable(GL_LIGHTING);
+ float px, py, pz;
+ if(do_select && select(*qt, sx, sy, px, py, pz)) {
+ selected = Vector3(px, py, pz);
+ }
+ 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, 600-height, 0);
+ glTranslatef(0, video::height-height, 0);
font->Render((boost::format("%dx%d %d levels %d nodes tree creation time: %f steps: %d")
% qt->width % qt->height % qt->levels % qt->nodes % qt->init_time % steps).str().c_str());
//glTranslatef(0, height, 0);