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#include "mode_chrg.h"
#include "mode_grid.h"
#include "modes.h"
#include "movement.h"
#include "orangutan_shim.h"
int g_w2_charged_status;
void w2_short_drive() {
set_motors(50, 50);
delay(150);
set_motors(0, 0);
}
void w2_home() {
set_motors(0, 0);
delay_ms(150);
set_motors(30, 30);
delay_ms(600);
set_motors(0, 0);
delay_ms(600);
g_w2_position = read_line(g_w2_sensors, IR_EMITTERS_ON);
g_w2_charged_status = 1;
delay_ms(2000);
}
void w2_charge_cross_walk() {
if (g_w2_transition == 0) {
set_motors(-30, 30);
delay(50);
}
while (g_w2_sensors[0] < 100 && g_w2_sensors[1] < 100 && g_w2_sensors[2] < 100 &&
g_w2_sensors[3] < 100 && g_w2_sensors[4] < 100) {
set_motors(15, 15);
delay(550);
g_w2_position = read_line(g_w2_sensors, IR_EMITTERS_ON);
if (g_w2_sensors[2] > 100 || g_w2_sensors[3] > 100 || g_w2_sensors[1] > 100) {
set_motors(0, 0);
g_w2_transition++;
if (g_w2_transition == 3) { // TODO: document g_w2_transition
set_motors(40, 40);
delay(600);
set_motors(0, 0);
g_w2_transition = 0;
w2_modes_swap(W2_M_MAZE);
break;
}
} else {
g_w2_transition = 0;
w2_maze_rotation_full();
}
}
}
void w2_mode_chrg() {
unsigned int last_proportional = 0;
long integral = 0;
while (1) {
// Get the position of the line. Note that we *must* provide
// the "sensors" argument to read_line() here, even though we
// are not interested in the individual sensor readings.
g_w2_position = read_line(g_w2_sensors, IR_EMITTERS_ON);
// The "proportional" term should be 0 when we are on the line.
int proportional = ((int)g_w2_position) - 2000;
// Compute the derivative (change) and integral (sum) of the
// position.
int derivative = proportional - last_proportional;
integral += proportional;
// Remember the last position.
last_proportional = proportional;
// Compute the difference between the two motor power settings,
// m1 - m2. If this is a positive number the robot will turn
// to the right. If it is a negative number, the robot will
// turn to the left, and the magnitude of the number determines
// the sharpness of the turn.
int power_difference = proportional / 20 + integral / 10000 + derivative * 3 / 2;
// Compute the actual motor settings. We never set either motor
// to a negative value.
const int max = 60;
if (power_difference > max) power_difference = max;
if (power_difference < -max) power_difference = -max;
if (g_w2_sensors[0] < 100 && g_w2_sensors[1] < 100 && g_w2_sensors[2] < 100 &&
g_w2_sensors[3] < 100 && g_w2_sensors[4] < 100) {
w2_charge_cross_walk();
if (g_w2_mode_history[g_w2_mode_history_index] == W2_M_MAZE) {
break;
}
}
else if ((g_w2_sensors[0] >= 500 && g_w2_sensors[1] >= 500 && g_w2_sensors[2] >= 500 &&
g_w2_sensors[3] >= 500 && g_w2_sensors[4] >= 500) &&
g_w2_charged_status == 0) {
w2_home();
delay(200);
w2_maze_rotation_full();
w2_short_drive();
} else if (g_w2_sensors[0] >= 500 && g_w2_sensors[1] >= 200 && g_w2_sensors[4] < 100) {
w2_maze_rotation_half_left();
}
else if (g_w2_sensors[0] >= 500 && g_w2_sensors[1] >= 250 && g_w2_sensors[2] >= 500 &&
g_w2_sensors[3] >= 250 && g_w2_sensors[4] >= 500) {
w2_maze_rotation_half_left();
} else {
if (power_difference < 0 &&
(g_w2_sensors[2] > 100 || g_w2_sensors[3] > 100 || g_w2_sensors[1] > 100)) {
set_motors(max + power_difference, max);
} else if (power_difference > 0 &&
(g_w2_sensors[2] > 100 || g_w2_sensors[3] > 100 || g_w2_sensors[1] > 100)) {
set_motors(max, max - power_difference);
}
}
}
}
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