From 0fd2ff847d24709de81b5af4ffa6baa8fb9949a5 Mon Sep 17 00:00:00 2001 From: John Tsiombikas Date: Sun, 16 Oct 2022 19:22:04 +0300 Subject: [PATCH] mouselook --- src/main.c | 77 +++++++++++++++++++++++++++++++++++++++++++++++++++++++----- 1 file changed, 71 insertions(+), 6 deletions(-) diff --git a/src/main.c b/src/main.c index f690a0e..e05118b 100644 --- a/src/main.c +++ b/src/main.c @@ -24,6 +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; @@ -31,8 +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], angle;// = 0x4000; +int32_t pos[2], angle; struct voxscape *vox; @@ -45,10 +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; @@ -88,14 +94,33 @@ void cleanup(void) 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], angle); } @@ -113,6 +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) @@ -184,3 +214,38 @@ void keyb_up(unsigned char key, int x, int y) 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; + } +} -- 1.7.10.4