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 Rotating image in relation to mouse x and y
 dothedru22 Member #7,325 June 2006 Im trying to rotate a gun so its always pointing towards the cursor. im sortof limited in physics.. i figured i needed to use the tan function which is opposite over adjacent to find that angle. (y would be the opposite and the x would be the adjacent). but its really not working out. is there some other function that i need to get this working. thanks for any help.
 Matthew Leverton Supreme Loser January 1999
 dothedru22 Member #7,325 June 2006 not really giving the desired effect. it sortof just stops when the cursor gets above the gun..which i guess is right because the angle is zero.. im also getting pretty bad movement becasue for some reason it has to be a fixed type. i have to type cast the variable. its sortof wierd..if i do it as float or double i dont get any movement.```void D_UpdateDraw(Player_S* p , BITMAP* b) { p->angle = atan2(float(mouse_y) , float(mouse_x)); if (p->keyCheck == D_KEYRIGHT) { draw_sprite(b , p->playerImg , p->x += p->velX , p->y += p->velY); } else { draw_sprite_h_flip(b , p->playerImg , p->x += p->velX , p->y += p->velY); } rotate_sprite(b , p->gunImg , p->x + 22 , p->y + 20 , itofix(p->angle)); //gun circle(b , mouse_x , mouse_y , 2 , WHITE); //cursor } ```
 gnolam Member #2,030 March 2002 The angle returned by atan2() is in radians. rotate_sprite wants fixed point 256 degree angles. -- Move to the Democratic People's Republic of Vivendi Universal (formerly known as Sweden) - officially democracy- and privacy-free since 2008-06-18!
 dothedru22 Member #7,325 June 2006 oh aight thanks. if anybody has ever played madness interactive i sortof want to do somethign like that..where the gun rotates around the center of the body. thats sortofg what im trying to do.
 Neil Walker Member #210 April 2000 This might help. It's targetted at Flash, but code is code, and maths is maths wii:0356-1384-6687-2022, kart:3308-4806-6002. XBOX:chucklepie
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