Documentation : Guide

How to code for the Tankerfield project.

Object class

Creating objects

Point curr_tex to the texture you want to draw from. Point curr_anim.frames to the animation you want to draw.

You won't need to override the PostUpdate, it will use the values you've provided.

bool Object::PostUpdate(float dt, Camera * camera)
{
	fPoint screen_pos = app->map->MapToScreenF(pos_map);

	app->render->Blit(
		curr_tex,
		screen_pos.x - draw_offset.x,
		screen_pos.y - draw_offset.y,
		camera,
		&curr_anim->GetFrame(angle));

	return true;
}

You can also specify the iPoint draw_offset to change where the texture is drawn.

IMPORTANT: Animation * curr_anim is involved in sprite sorting and camera culling processes. If you don't set it, the object will not be drawn.

Weapons

To create a new weapon you must:

1. Define its properties in Obj_Tank::SetWeapon() method

2. Create a new case in enum class WEAPON

//Obj_Tank.h

enum class WEAPON
{
	BASIC,
	MAX
};

3. Define the shoot effect of the weapon in a new function called Shoot"NameOfTheWeapon"() inside Obj_Tank

//Obj_Tank.cpp

void Obj_Tank::ShootBasic()
{
	Obj_Bullet * bullet = (Obj_Bullet*)app->objectmanager->CreateObject(ObjectType::BASIC_BULLET, turr_pos + shot_dir * cannon_length);
	bullet->SetBulletProperties(
		weapons_info[(uint)basic_shot].bullet_speed,
		weapons_info[(uint)basic_shot].bullet_life_ms,
		weapons_info[(uint)basic_shot].bullet_damage,
		shot_dir,
		turr_angle);
}

4. Fill the corresponding position in the functions pointer array

//Obj_Tank.cpp

bool Obj_Tank::Start()
{
	shot_function[(uint)WEAPON::BASIC] = &Obj_Tank::ShootBasic;
	return true;
}