mouselook

[voxscape] / src / main.c

diff --git a/src/main.c b/src/main.c
index c2192ee..e05118b 100644 (file)
--- a/src/main.c
+++ b/src/main.c
@@ -6,12 +6,15 @@
 #include <GL/glut.h>
 #include "glfb.h"
 #include "voxscape.h"
+#include "lut.h"
 
 enum {
-       INP_FWD         = 1,
-       INP_BACK        = 2,
-       INP_LEFT        = 4,
-       INP_RIGHT       = 8
+       INP_FWD         = 0x01,
+       INP_BACK        = 0x02,
+       INP_LEFT        = 0x04,
+       INP_RIGHT       = 0x08,
+       INP_LTURN       = 0x10,
+       INP_RTURN       = 0x20
 };
 
 int init(void);
@@ -21,6 +24,8 @@ void idle(void);
 void reshape(int x, int y);
 void keyb(unsigned char key, int x, int y);
 void keyb_up(unsigned char key, int x, int y);
+void mouse(int bn, int st, int x, int y);
+void motion(int x, int y);
 
 int win_width, win_height;
 
@@ -28,8 +33,10 @@ int win_width, win_height;
 #define FB_H   480
 unsigned int fb[FB_W * FB_H];
 
+int mouse_x, mouse_y, mwarp, mbstate[3];
+
 unsigned int input;
-int32_t pos[2];
+int32_t pos[2], angle;
 
 struct voxscape *vox;
 
@@ -42,10 +49,12 @@ int main(int argc, char **argv)
        glutCreateWindow("voxel landscape test");
 
        glutDisplayFunc(display);
+       glutIdleFunc(idle);
        glutReshapeFunc(reshape);
        glutKeyboardFunc(keyb);
        glutKeyboardUpFunc(keyb_up);
-       glutIdleFunc(idle);
+       glutMouseFunc(mouse);
+       glutMotionFunc(motion);
 
        if(init() == -1) {
                return 1;
@@ -59,6 +68,8 @@ int main(int argc, char **argv)
 
 int init(void)
 {
+       init_lut();
+
        pos[0] = 512 << 16;
        pos[1] = 512 << 16;
 
@@ -67,7 +78,7 @@ int init(void)
        }
        vox_framebuf(vox, FB_W, FB_H, fb);
        vox_proj(vox, 45, 1, 200);
-       vox_view(vox, pos[0], pos[1], 0);
+       vox_view(vox, pos[0], pos[1], angle);
 
        glfb_setup(FB_W, FB_H, GLFB_RGBA32, FB_W * 4);
        return 0;
@@ -79,14 +90,38 @@ void cleanup(void)
 }
 
 #define WALK_SPEED     0x40000
+#define TURN_SPEED     0x100
+
 void update(void)
 {
-       if(input & INP_FWD) pos[1] += WALK_SPEED;
-       if(input & INP_BACK) pos[1] -= WALK_SPEED;
-       if(input & INP_LEFT) pos[0] -= WALK_SPEED;
-       if(input & INP_RIGHT) pos[0] += WALK_SPEED;
+       int32_t fwd[2], right[2];
+
+       if(input & INP_LTURN) angle += TURN_SPEED;
+       if(input & INP_RTURN) angle -= TURN_SPEED;
+
+       fwd[0] = -SIN(angle);
+       fwd[1] = COS(angle);
+       right[0] = fwd[1];
+       right[1] = -fwd[0];
+
+       if(input & INP_FWD) {
+               pos[0] += fwd[0];
+               pos[1] += fwd[1];
+       }
+       if(input & INP_BACK) {
+               pos[0] -= fwd[0];
+               pos[1] -= fwd[1];
+       }
+       if(input & INP_RIGHT) {
+               pos[0] += right[0];
+               pos[1] += right[1];
+       }
+       if(input & INP_LEFT) {
+               pos[0] -= right[0];
+               pos[1] -= right[1];
+       }
 
-       vox_view(vox, pos[0], pos[1], 0);
+       vox_view(vox, pos[0], pos[1], angle);
 }
 
 void display(void)
@@ -103,6 +138,11 @@ void display(void)
 
        glutSwapBuffers();
        assert(glGetError() == GL_NO_ERROR);
+
+       if(mbstate[0]) {
+               mwarp = 1;
+               glutWarpPointer(win_width / 2, win_height / 2);
+       }
 }
 
 void idle(void)
@@ -136,6 +176,12 @@ void keyb(unsigned char key, int x, int y)
        case 'd':
                input |= INP_RIGHT;
                break;
+       case 'q':
+               input |= INP_LTURN;
+               break;
+       case 'e':
+               input |= INP_RTURN;
+               break;
 
        default:
                break;
@@ -157,8 +203,49 @@ void keyb_up(unsigned char key, int x, int y)
        case 'd':
                input &= ~INP_RIGHT;
                break;
+       case 'q':
+               input &= ~INP_LTURN;
+               break;
+       case 'e':
+               input &= ~INP_RTURN;
+               break;
 
        default:
                break;
        }
 }
+
+void mouse(int bn, int st, int x, int y)
+{
+       int bidx = bn - GLUT_LEFT_BUTTON;
+
+       if(bidx < 3) {
+               mbstate[bidx] = st == GLUT_DOWN;
+       }
+       mouse_x = x;
+       mouse_y = y;
+
+       if(st == GLUT_DOWN) {
+               glutSetCursor(GLUT_CURSOR_NONE);
+       } else {
+               glutSetCursor(GLUT_CURSOR_LEFT_ARROW);
+       }
+}
+
+void motion(int x, int y)
+{
+       int dx = x - mouse_x;
+       int dy = y - mouse_y;
+       mouse_x = x;
+       mouse_y = y;
+
+       if(mwarp) {
+               mwarp = 0;
+               return;
+       }
+       if(!(dx | dy)) return;
+
+       if(mbstate[0]) {
+               angle -= dx << 6;
+       }
+}