mirror of https://github.com/dirtbags/tanks.git
91 lines
2.5 KiB
C
91 lines
2.5 KiB
C
#ifndef __CTANKS_H__
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#define __CTANKS_H__
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/* Some useful constants */
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#define TANK_MAX_SENSORS 10
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#define TANK_RADIUS 7.5
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#define TANK_SENSOR_RANGE 100
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#define TANK_CANNON_RANGE (TANK_SENSOR_RANGE / 2)
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#define TANK_MAX_ACCEL 35
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/* (tank radius + tank radius)^2 */
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#define TANK_COLLISION_ADJ2 \
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((TANK_RADIUS + TANK_RADIUS) * (TANK_RADIUS + TANK_RADIUS))
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/* (Sensor range + tank radius)^2
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* If the distance^2 to the center of a tank <= TANK_SENSOR_ADJ2,
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* that tank is within sensor range. */
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#define TANK_SENSOR_ADJ2 \
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((TANK_SENSOR_RANGE + TANK_RADIUS) * (TANK_SENSOR_RANGE + TANK_RADIUS))
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struct tanks_game {
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float size[2]; /* dimensions of playing field */
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};
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struct tank;
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struct sensor {
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int angle;
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int width;
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float range;
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float range_adj2; /* (range + TANK_RADIUS)^2 */
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int turret; /* Mounted to turret? */
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int triggered;
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};
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typedef void tank_run_func(struct tank *, void *);
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struct tank {
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float position[2]; /* Current position on the board */
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int angle; /* Current orientation */
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struct {
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float current[2]; /* Current tread speed */
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float desired[2]; /* Desired tread speed */
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} speed;
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struct {
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int current; /* Current turret angle */
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int desired; /* Desired turret angle */
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int firing; /* True if firing this turn */
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int recharge; /* Turns until gun is recharged */
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} turret;
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struct sensor sensor[TANK_MAX_SENSORS]; /* Sensor array */
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int num_sensors; /* Number of sensors */
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int led; /* State of the LED */
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struct tank *killer; /* Killer, or NULL if alive */
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char *cause_death; /* Cause of death */
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tank_run_func *run; /* Function to run a tank */
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void *udata; /* Argument to pass to run */
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};
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void tank_init(struct tank *tank, tank_run_func *run, void *udata);
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/*
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*
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* Tanks API for scripts
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*
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*/
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/** Has the turret recharged? */
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int tank_fire_ready(struct tank *tank);
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/** Fire! */
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void tank_fire(struct tank *tank);
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/** Set desired speed */
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void tank_set_speed(struct tank *tank, float left, float right);
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/** Get the current turret angle */
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int tank_get_turret(struct tank *tank);
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/** Set the desired turret angle */
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void tank_set_turret(struct tank *tank, int angle);
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/** Is a sensor active? */
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int tank_get_sensor(struct tank *tank, int sensor_num);
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/** Set the LED state */
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void tank_set_led(struct tank *tank, int active);
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#endif /* __CTANKS_H__ */
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