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add support for joystick axes

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axes pushed farther than AXIS_THRESHOLD will be counted as button
presses
This commit is contained in:
Devin J. Pohly 2010-12-11 13:55:34 -05:00 committed by Themaister
parent 973c6212f2
commit 19a9641f59
3 changed files with 52 additions and 32 deletions
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61
config.h
View File

@ -118,42 +118,49 @@ static const bool audio_sync = true;
// Keybinds, Joypad
////////////////////
// Axis threshold (between 0.0 and 1.0)
// How far an axis must be tilted to result in a button press
#define AXIS_THRESHOLD 0.8
// To figure out which joypad buttons to use, check jstest or similar.
// Axes are configured using the axis number for the positive (up, right)
// direction and the number's two's-complement (~) for negative directions.
// To use the axis, set the button to -1.
// Player 1
static const struct snes_keybind snes_keybinds_1[] = {
// SNES button | keyboard key | joypad button |
{ SNES_DEVICE_ID_JOYPAD_A, 'X', 1 },
{ SNES_DEVICE_ID_JOYPAD_B, 'Z', 0 },
{ SNES_DEVICE_ID_JOYPAD_X, 'S', 3 },
{ SNES_DEVICE_ID_JOYPAD_Y, 'A', 2 },
{ SNES_DEVICE_ID_JOYPAD_L, 'Q', 4 },
{ SNES_DEVICE_ID_JOYPAD_R, 'W', 5 },
{ SNES_DEVICE_ID_JOYPAD_LEFT, GLFW_KEY_LEFT, 11 },
{ SNES_DEVICE_ID_JOYPAD_RIGHT, GLFW_KEY_RIGHT, 12 },
{ SNES_DEVICE_ID_JOYPAD_UP, GLFW_KEY_UP, 13 },
{ SNES_DEVICE_ID_JOYPAD_DOWN, GLFW_KEY_DOWN, 14 },
{ SNES_DEVICE_ID_JOYPAD_START, GLFW_KEY_ENTER, 6 },
{ SNES_DEVICE_ID_JOYPAD_SELECT, GLFW_KEY_RSHIFT, 7 },
{ SNES_FAST_FORWARD_KEY, GLFW_KEY_SPACE, 9 },
// SNES button | keyboard key | js btn | js axis |
{ SNES_DEVICE_ID_JOYPAD_A, 'X', 1, 0 },
{ SNES_DEVICE_ID_JOYPAD_B, 'Z', 0, 0 },
{ SNES_DEVICE_ID_JOYPAD_X, 'S', 3, 0 },
{ SNES_DEVICE_ID_JOYPAD_Y, 'A', 2, 0 },
{ SNES_DEVICE_ID_JOYPAD_L, 'Q', 4, 0 },
{ SNES_DEVICE_ID_JOYPAD_R, 'W', 5, 0 },
{ SNES_DEVICE_ID_JOYPAD_LEFT, GLFW_KEY_LEFT, 11, ~4 },
{ SNES_DEVICE_ID_JOYPAD_RIGHT, GLFW_KEY_RIGHT, 12, 4 },
{ SNES_DEVICE_ID_JOYPAD_UP, GLFW_KEY_UP, 13, 5 },
{ SNES_DEVICE_ID_JOYPAD_DOWN, GLFW_KEY_DOWN, 14, ~5 },
{ SNES_DEVICE_ID_JOYPAD_START, GLFW_KEY_ENTER, 6, 0 },
{ SNES_DEVICE_ID_JOYPAD_SELECT, GLFW_KEY_RSHIFT, 7, 0 },
{ SNES_FAST_FORWARD_KEY, GLFW_KEY_SPACE, 9, 0 },
{ -1 }
};
// Player 2
static const struct snes_keybind snes_keybinds_2[] = {
// SNES button | keyboard key | joypad button |
{ SNES_DEVICE_ID_JOYPAD_A, 'B', 1 },
{ SNES_DEVICE_ID_JOYPAD_B, 'V', 0 },
{ SNES_DEVICE_ID_JOYPAD_X, 'G', 3 },
{ SNES_DEVICE_ID_JOYPAD_Y, 'F', 2 },
{ SNES_DEVICE_ID_JOYPAD_L, 'R', 4 },
{ SNES_DEVICE_ID_JOYPAD_R, 'T', 5 },
{ SNES_DEVICE_ID_JOYPAD_LEFT, 'J', 11 },
{ SNES_DEVICE_ID_JOYPAD_RIGHT, 'L', 12 },
{ SNES_DEVICE_ID_JOYPAD_UP, 'I', 13 },
{ SNES_DEVICE_ID_JOYPAD_DOWN, 'K', 14 },
{ SNES_DEVICE_ID_JOYPAD_START, 'P', 6 },
{ SNES_DEVICE_ID_JOYPAD_SELECT, 'O', 7 },
// SNES button | keyboard key | js btn | js axis |
{ SNES_DEVICE_ID_JOYPAD_A, 'B', 1, 0 },
{ SNES_DEVICE_ID_JOYPAD_B, 'V', 0, 0 },
{ SNES_DEVICE_ID_JOYPAD_X, 'G', 3, 0 },
{ SNES_DEVICE_ID_JOYPAD_Y, 'F', 2, 0 },
{ SNES_DEVICE_ID_JOYPAD_L, 'R', 4, 0 },
{ SNES_DEVICE_ID_JOYPAD_R, 'T', 5, 0 },
{ SNES_DEVICE_ID_JOYPAD_LEFT, 'J', 11, ~4 },
{ SNES_DEVICE_ID_JOYPAD_RIGHT, 'L', 12, 4 },
{ SNES_DEVICE_ID_JOYPAD_UP, 'I', 13, 5 },
{ SNES_DEVICE_ID_JOYPAD_DOWN, 'K', 14, ~5 },
{ SNES_DEVICE_ID_JOYPAD_START, 'P', 6, 0 },
{ SNES_DEVICE_ID_JOYPAD_SELECT, 'O', 7, 0 },
{ -1 }
};

1
driver.h
View File

@ -32,6 +32,7 @@ struct snes_keybind
int id;
int key;
int joykey;
int joyaxis;
};
typedef struct video_info

22
gl.c
View File

@ -75,9 +75,11 @@ static void glfw_input_poll(void *data)
}
#define BUTTONS_MAX 128
#define AXES_MAX 128
static int joypad_id[2];
static int joypad_buttons[2];
static int joypad_axes[2];
static bool joypad_inited = false;
static int joypad_count = 0;
@ -93,6 +95,9 @@ static int init_joypads(int max_pads)
joypad_buttons[count] = glfwGetJoystickParam(i, GLFW_BUTTONS);
if (joypad_buttons[count] > BUTTONS_MAX)
joypad_buttons[count] = BUTTONS_MAX;
joypad_axes[count] = glfwGetJoystickParam(i, GLFW_AXES);
if (joypad_axes[count] > AXES_MAX)
joypad_axes[count] = AXES_MAX;
count++;
}
}
@ -100,13 +105,17 @@ static int init_joypads(int max_pads)
return count;
}
static bool glfw_is_pressed(int port_num, const struct snes_keybind *key, unsigned char *buttons)
static bool glfw_is_pressed(int port_num, const struct snes_keybind *key, unsigned char *buttons, float *axes)
{
if (glfwGetKey(key->key))
return true;
if (port_num >= joypad_count)
return false;
return (key->joykey < joypad_buttons[port_num] && buttons[key->joykey] == GLFW_PRESS);
if (key->joykey >= 0)
return (key->joykey < joypad_buttons[port_num] && buttons[key->joykey] == GLFW_PRESS);
if (key->joyaxis >= 0)
return (key->joyaxis < joypad_axes[port_num] && axes[key->joyaxis] >= AXIS_THRESHOLD);
return (~key->joyaxis < joypad_axes[port_num] && axes[~key->joyaxis] <= -AXIS_THRESHOLD);
}
static int16_t glfw_input_state(void *data, const struct snes_keybind **binds, bool port, unsigned device, unsigned index, unsigned id)
@ -119,9 +128,12 @@ static int16_t glfw_input_state(void *data, const struct snes_keybind **binds, b
int port_num = port ? 1 : 0;
unsigned char buttons[BUTTONS_MAX];
float axes[AXES_MAX];
if ( joypad_count > port_num )
if ( joypad_count > port_num ) {
glfwGetJoystickButtons(joypad_id[port_num], buttons, joypad_buttons[port_num]);
glfwGetJoystickPos(joypad_id[port_num], axes, joypad_axes[port_num]);
}
const struct snes_keybind *snes_keybinds;
@ -134,9 +146,9 @@ static int16_t glfw_input_state(void *data, const struct snes_keybind **binds, b
bool pressed = false;
for ( int i = 0; snes_keybinds[i].id != -1; i++ )
if ( snes_keybinds[i].id == SNES_FAST_FORWARD_KEY )
set_fast_forward_button(glfw_is_pressed(port_num, &snes_keybinds[i], buttons));
set_fast_forward_button(glfw_is_pressed(port_num, &snes_keybinds[i], buttons, axes));
else if ( !pressed && snes_keybinds[i].id == (int)id )
pressed = glfw_is_pressed(port_num, &snes_keybinds[i], buttons);
pressed = glfw_is_pressed(port_num, &snes_keybinds[i], buttons, axes);
return pressed;
}