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key_down

gameprogrammerwiz · 2000-05-22T22:24:57

ok, im useing a macro for my keydown/keyup functions in my game: #define KEY_DOWN(vk_code) ((GetAsyncKeyState(vk_code) & 0x8000) ? 1 : 0) #define KEY_UP(vk_code) ((GetAsyncKeyState(vk_code) & 0x8000) ? 0 : 1) ========== now, im doing animations here, and the animations work fine, but not while the user is holding down one of the keys. here is the function that reads the keys. void game_main(void) { LPDIRECTDRAWSURFACE pdds; RECT rcRect; HRESULT ddrval; static int px = screen_width, py = screen_height; static int movementspeed = 10; static int player_left = 0; static int player_top = 0; int sprite_left, sprite_top; int centering_factor_x, centering_factor_y; if(KEY_DOWN(VK_ESCAPE)) { PostMessage(window_handle,WM_QUIT,0,0); } if(KEY_DOWN(VK_RIGHT)) { direction = 4; walk_frame = 6; if ((player_left+=movementspeed)>(x_bound-player_y_size)) player_left = (x_bound-player_y_size); } if(KEY_DOWN(VK_LEFT)) { direction = 3; walk_frame = 4; if ((player_left-=movementspeed)<0) player_left = 0; } if(KEY_DOWN(VK_UP)) { direction = 1; walk_frame = 0; if ((player_top-=movementspeed)<0) player_top = 0; } if(KEY_DOWN(VK_DOWN)) { direction = 2; walk_frame = 2; if ((player_top+=movementspeed)>(y_bound-player_x_size)) player_top = (y_bound-player_x_size); } if(direction == 1) //north { if(walk_frame == 0) { walk_frame = 1; goto skip; } if(walk_frame == 1) { walk_frame = 0; goto skip; } } if(direction == 2) //south { if(walk_frame == 2) { walk_frame = 3; goto skip; } if(walk_frame == 3) { walk_frame = 2; goto skip; } } if(direction == 3) //east { if(walk_frame == 4) { walk_frame = 5; goto skip; } if(walk_frame == 5) { walk_frame = 4; goto skip; } } if(direction == 4) //west { if(walk_frame == 6) { walk_frame = 7; goto skip; } if(walk_frame == 7) { walk_frame = 6; goto skip; } } skip: centering_factor_x = (screen_width>>1)+(player_y_size>>1); centering_factor_y = (screen_height>>1)+(player_x_size>>1); px = player_left + centering_factor_x; if (px > x_bound) px = x_bound; if (px < screen_width) px = screen_width; py = player_top + centering_factor_y; if (py > y_bound) py = y_bound; if (py < screen_height) py = screen_height; render_scene(px,py); sprite_left = player_left-(px-screen_width); sprite_top = player_top-(py-screen_height); rcRect.top = 0; rcRect.left = 0; rcRect.right = player_x_size; rcRect.bottom = player_y_size; pdds = lpddsplayer[walk_frame]; ddrval = lpddsback->BltFast(sprite_left, sprite_top, pdds, &rcRect, DDBLTFAST_WAIT / DDBLTFAST_SRCCOLORKEY); lpddsprimary->Flip(NULL,DDFLIP_WAIT); } =========================================================== now, this isnt so much of a DirectX question because i think my problem is with my KEY_DOWN function. when you press any of the arrow keys to move the player around the screen, the player sticks on the current animation frame, so my question is: is there another function that i can use for key_down that will CHECK TO SEE IF THE KEY IS DOWN EVERY TIME THE game_main(); FUNCTION IS RUN? because i think that the macro that i''m useing only checks to see if the key is down ONCE and then doesnt check to see if the user is still holding it down until they actually let up on the key. i''m sorry that this is so confusing, if you want to help me but dont understand my question...email me (or leave a post here) for the full source to see for yourself. thanks, -mike

General and Gameplay Programming Programming

Started by gameprogrammerwiz May 22, 2000 02:56 AM

9 comments, last by gameprogrammerwiz 24 years, 7 months ago

SpazBoy_the_Mitey

122

May 22, 2000 10:24 PM

glad to be of service.

----------"i think that all this talking and such is paining my head to astounding annoyance" - Erick"Quoting people in your tag is cool. Quoting yourself is even cooler" - SpazBoy_the_MiteyDisco Love For Everyone

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