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support an initialization file that provides joystick mapping

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This commit is contained in:
Brad Grantham 2016-11-30 10:27:51 -08:00
parent 067b3f4886
commit 824459f575
1 changed files with 49 additions and 17 deletions
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66
interface.cpp
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@ -32,6 +32,10 @@ int display_page = 0; // Apple //e page minus 1 (so 0,1 not 1,2)
bool mixed_mode = false;
bool use_joystick = false;
int joystick_axis0 = 0;
int joystick_axis1 = 1;
int joystick_button0 = 0;
int joystick_button1 = 1;
extern int font_offset;
extern unsigned char font_bytes[96 * 7 * 8];
@ -1159,14 +1163,27 @@ static void scroll(GLFWwindow *window, double dx, double dy)
const int pixel_scale = 3;
void joystick(int num, int event)
void load_joystick_setup()
{
if(event == GLFW_CONNECTED)
printf("joystick %d connected\n", num);
FILE *fp = fopen("joystick.ini", "r");
if(fp == NULL) {
fprintf(stderr,"no joystick.ini file found, assuming defaults\n");
fprintf(stderr,"store GLFW joystick axis 0 and 1 and button 0 and 1 in joystick.ini\n");
fprintf(stderr,"e.g. \"3 4 12 11\" for Samsung EI-GP20\n");
return;
}
if(fscanf(fp, "%d %d %d %d", &joystick_axis0, &joystick_axis1, &joystick_button0, &joystick_button1) != 4) {
fprintf(stderr,"couldn't parse joystick.ini\n");
fprintf(stderr,"store GLFW joystick axis 0 and 1 and button 0 and 1 in joystick.ini\n");
fprintf(stderr,"e.g. \"3 4 12 11\" for Samsung EI-GP20\n");
}
fclose(fp);
}
void start()
{
load_joystick_setup();
glfwSetErrorCallback(error_callback);
start_time = std::chrono::system_clock::now();
@ -1202,7 +1219,6 @@ void start()
glfwSetScrollCallback(my_window, scroll);
glfwSetFramebufferSizeCallback(my_window, resize);
glfwSetWindowRefreshCallback(my_window, redraw);
glfwSetJoystickCallback(joystick);
CheckOpenGL(__FILE__, __LINE__);
}
@ -1221,22 +1237,38 @@ void iterate()
if(glfwJoystickPresent(GLFW_JOYSTICK_1)) {
if(false) printf("joystick 1 present\n");
use_joystick = true;
int count;
const float* axes = glfwGetJoystickAxes(GLFW_JOYSTICK_1, &count);
if(false) for(int i = 0; i < count; i++)
int axis_count, button_count;
const float* axes = glfwGetJoystickAxes(GLFW_JOYSTICK_1, &axis_count);
const unsigned char* buttons = glfwGetJoystickButtons(GLFW_JOYSTICK_1, &button_count);
if(false) for(int i = 0; i < axis_count; i++)
printf("Axis %d: %f\n", i, axes[i]);
if(count >= 4) {
paddle_values[0] = (axes[3] + 1) / 2;
paddle_values[1] = (axes[4] + 1) / 2;
}
const unsigned char* buttons = glfwGetJoystickButtons(GLFW_JOYSTICK_1, &count);
if(false)for(int i = 0; i < count; i++)
if(false)for(int i = 0; i < button_count; i++)
printf("Button %d: %s\n", i, (buttons[i] == GLFW_PRESS) ? "pressed" : "not pressed");
if(count >= 12) {
paddle_buttons[0] = buttons[12] == GLFW_PRESS;
paddle_buttons[1] = buttons[11] == GLFW_PRESS;
if(axis_count <= joystick_axis0 || axis_count <= joystick_axis1) {
fprintf(stderr, "couldn't map joystick/gamepad axes\n");
fprintf(stderr, "mapped joystick axes are %d and %d, but maximum axis is %d\n", joystick_axis0, joystick_axis1, axis_count);
use_joystick = false;
} else if(button_count <= joystick_button0 && button_count <= joystick_button1) {
fprintf(stderr, "couldn't map joystick/gamepad buttons\n");
fprintf(stderr, "mapped buttons are %d and %d, but maximum button is %d\n", joystick_button0, joystick_button1, button_count);
use_joystick = false;
} else {
paddle_values[0] = (axes[joystick_axis0] + 1) / 2;
paddle_values[1] = (axes[joystick_axis1] + 1) / 2;
paddle_buttons[0] = buttons[joystick_button0] == GLFW_PRESS;
paddle_buttons[1] = buttons[joystick_button1] == GLFW_PRESS;
use_joystick = true;
}
} else {
use_joystick = false;
}