right click menu, now rotation is done using left click
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e067a7b974
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57262da912
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@ -6,6 +6,11 @@ Code here is published under the [AGPL-v3](https://www.gnu.org/licenses/agpl-3.0
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# TODO
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- Add menu - partially done
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- Adjust ambient light
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- help
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- quit
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- Allow changing the move/rotation speed(or just a multiplier)
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- Create a cow
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- Head
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- Tail
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@ -21,10 +26,6 @@ Code here is published under the [AGPL-v3](https://www.gnu.org/licenses/agpl-3.0
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- Legs? (optional)
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- Change camera position to be cow point of view
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- Add popping-floating text of funny cow thoughts
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- Add menu
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- Adjust ambient light
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- help
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- quit
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- Add multiple objects(that is not the cow)
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- User controlled light source
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- Add light source
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@ -0,0 +1,9 @@
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const unsigned char helpString[] =
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"World of Cow by Aviv Romem\n"
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"Left/Middle mouse to control camera rotation/Position.\n"
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"Scroll wheel to control camera zoom.\n"
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"WASD keys to control the cow.\n"
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"Different parts of the cow can be controlled by select\n a different part in the right click menu(under 'Control Cow').\n"
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"Left click/scroll wheel on a slider to change its value.\n"
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"ESC to close this popup, ESC again to exit the program.\n"
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;
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122
mmn_17.c
122
mmn_17.c
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@ -7,6 +7,7 @@
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#include <math.h>
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#include "ui.h"
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#include "grass_texture_color.h"
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#include "help.h"
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// close enough
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#define PI 3.14
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@ -17,10 +18,17 @@ vec3 camCenter = { 0.0, 0.0, 0.0 };
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vec3 camRot = { -PI * 0.125, 0.0, 0.0 };
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struct {
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unsigned char lockYMovement: 1;
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unsigned char showHelp: 1;
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GLenum textureFilter;
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} settings = {
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0, GL_NEAREST,
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0, 0, GL_NEAREST,
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};
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struct {
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int main;
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int cowControl;
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int filters;
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} menus; // to simply hold the menues in a labed manner
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vec3 rotateByCameraRotation(vec3 v) {
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vec3 r;
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@ -38,23 +46,7 @@ vec3 rotateByCameraRotation(vec3 v) {
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int lastMouseButton = GLUT_LEFT_BUTTON;
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int lastMouseX = 0, lastMouseY = 0;
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ui_slider* draggedSlider = NULL;
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void changeFilterButton();
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void lockYButton();
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ui_button buttons[] = {
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{
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/* pos */ { { 0.9, 0.5, 0.0 }, { -65.0, -20.0, 0.0 } },
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/* size */ { 130.0, 40.0, 0.0 },
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/* onclick */ changeFilterButton,
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/* text */ "Cycle filter",
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0
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},
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{
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{ { 0.9, 0.5, 0.0 }, { -50.0, 25.0, 0.0 } },
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{ 100.0, 40.0, 0.0 },
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lockYButton,
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"Lock Y"
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}
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};
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ui_button buttons[] = {}; // TODO: maybe delete? the menu thing is easier to work with
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ui_slider sliders[] = {
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{
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/* pos */ { { 0.9, 0.7, 0.0 }, { -50.0, -5.0, 0.0 } },
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@ -63,18 +55,6 @@ ui_slider sliders[] = {
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}
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};
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void changeFilterButton() {
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static int current = 0;
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GLenum filters[] = { GL_NEAREST, GL_LINEAR };
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current = (current + 1) % (sizeof(filters) / sizeof(GLenum));
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settings.textureFilter = filters[current];
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glutPostRedisplay();
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}
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void lockYButton() {
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settings.lockYMovement ^= 1;
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buttons[1].text = settings.lockYMovement ? "Unlock Y" : "Lock Y";
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}
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void drawUi(void) {
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glDisable(GL_LIGHTING);
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glDisable(GL_DEPTH_TEST);
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@ -96,6 +76,16 @@ void drawUi(void) {
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ui_slider_draw(s);
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}
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if(settings.showHelp) {
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glColor3f(0.3, 0.3, 0.3);
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glBegin(GL_QUADS);
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glVertex3f(wWidth * 0.1, wHeight * 0.1, 0.0);
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glVertex3f(wWidth * 0.9, wHeight * 0.1, 0.0);
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glVertex3f(wWidth * 0.9, wHeight * 0.9, 0.0);
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glVertex3f(wWidth * 0.1, wHeight * 0.9, 0.0);
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glEnd();
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}
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int err = glGetError();
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if(err != 0) {
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printf("opengl error %d: %s\n", err, gluErrorString(err));
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@ -199,6 +189,15 @@ void mouseMotionEvent(int x, int y) {
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ui_slider_onclick(draggedSlider, x, y);
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}
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}
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else {
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// rotate the camera
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camRot.y -= (x - lastMouseX) * PI * 0.01;
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if(camRot.y > 2 * PI) camRot.y -= 2 * PI;
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else if(camRot.y < 0.0) camRot.y += 2 * PI;
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camRot.x = fmin(PI * 0.5, fmax(-PI * 0.5, camRot.x - (y - lastMouseY) * 0.01 * PI));
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}
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}
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else if(lastMouseButton == GLUT_MIDDLE_BUTTON) {
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vec3 moveX = rotateByCameraRotation(vec3_new(1.0, 0.0, 0.0));
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@ -212,14 +211,6 @@ void mouseMotionEvent(int x, int y) {
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camCenter = vec3_add(camCenter, vec3_mult(moveX, (lastMouseX - x)));
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camCenter = vec3_add(camCenter, vec3_mult(moveY, (y - lastMouseY)));
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}
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else if(lastMouseButton == GLUT_RIGHT_BUTTON) {
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// rotate the camera
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camRot.y -= (x - lastMouseX) * PI * 0.01;
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if(camRot.y > 2 * PI) camRot.y -= 2 * PI;
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else if(camRot.y < 0.0) camRot.y += 2 * PI;
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camRot.x = fmin(PI * 0.5, fmax(-PI * 0.5, camRot.x - (y - lastMouseY) * 0.01 * PI));
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}
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lastMouseX = x; lastMouseY = y;
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glutPostRedisplay();
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}
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@ -242,14 +233,64 @@ void mouseWheelEvent(int wheel, int dir, int x, int y) {
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void keyboardEvent(unsigned char c, int x, int y) {
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if(c == '\e') {
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glutLeaveMainLoop();
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exit(0);
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if(settings.showHelp) {
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settings.showHelp = 0;
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glutPostRedisplay();
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}
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else {
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glutLeaveMainLoop();
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exit(0);
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}
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}
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if(c == 'a') {
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glutPostRedisplay();
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}
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}
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void onMenuItem(int item) {
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lastMouseButton = -1; // to prevent jumps in view position/rotation
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switch(item) {
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case 0: // Lock y
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settings.lockYMovement ^= 1;
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glutChangeToMenuEntry(3, settings.lockYMovement ? "Unlock Y position" : "Lock Y position", 0);
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break;
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case 2: // Show help
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settings.showHelp ^= 1;
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glutPostRedisplay();
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break;
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}
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}
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void onControlCowMenu(int item) {
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lastMouseButton = GLUT_RIGHT_BUTTON;
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printf("Control cow: %d\n", item);
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}
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void onFilterMenu(int item) {
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lastMouseButton = GLUT_RIGHT_BUTTON;
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GLenum filters[] = { GL_LINEAR, GL_NEAREST };
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settings.textureFilter = filters[item];
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}
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void menuSetup() {
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// control cow sub-menu
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menus.cowControl = glutCreateMenu(onControlCowMenu);
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glutAddMenuEntry("Movement", 0);
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glutAddMenuEntry("Head", 1);
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glutAddMenuEntry("Tail", 2);
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// filters
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menus.filters = glutCreateMenu(onFilterMenu);
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glutAddMenuEntry("Linear", 0);
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glutAddMenuEntry("Nearest", 1);
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menus.main = glutCreateMenu(onMenuItem);
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glutAddSubMenu("Control Cow", menus.cowControl);
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glutAddSubMenu("Texture filters", menus.filters);
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glutAddMenuEntry("Lock Y position", 0);
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glutAddMenuEntry("Change to Cow POV", 1);
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glutAddMenuEntry("Help", 2);
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glutAttachMenu(GLUT_RIGHT_BUTTON);
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}
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int main(int argc, char** argv) {
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/* initialize glut and window */
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glutInit(&argc, argv);
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@ -263,6 +304,7 @@ int main(int argc, char** argv) {
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glutKeyboardFunc(keyboardEvent);
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glutMouseWheelFunc(mouseWheelEvent);
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glutMotionFunc(mouseMotionEvent);
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menuSetup();
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// set up some rendering related stuff
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glEnable(GL_CULL_FACE);
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glCullFace(GL_BACK);
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