// SetupStage_Level1
// Set up the stage (sprites and backgrounds) for level 1.
void GameState::SetupStage_Level1() {
// Set the default sprite video mode.
SetSpriteVideoMode();
// Setup the foreground sprites.
// The sprite data is not active until we copy it from our data
// tables (in sprites.cpp) into the real Palette and Graphics memory.
// So, let's copy the default spriteset there now.
ClearSprites();
LoadSpriteset(0);
// Setup the background tiles and map.
// Just like sprites, the data is not active until we copy it from
// our data tables (in background_maps.cpp) into real memory.
ClearBackgrounds();
LoadBgTileset(0);
LoadBgMap(0);
// Initialize the objects for the first level.
InitObject(kObj_Player, kSprites_Player);
InitObject(kObj_New, kSprites_New);
// Set the initial location of each object.
_xPlayer = 0;
_yPlayer = 0;
MoveObjectTo(kObj_Player, _xPlayer, _yPlayer);
MoveObjectTo(kObj_New, 50, 50);
// TODO: Add more initialization for level 1 here.
}
// Update_Level1
// Handle buttons and update game state for level 1.
void GameState::Update_Level1() {
// The arrow keys are used to move the current object.
// We use CheckKeyHeld() because we want the action to repeat as long
// as the player is holding down the button.
int dx = 0;
int dy = 0;
if (CheckKeyHeld(KEY_LEFT))
dx = -1;
if (CheckKeyHeld(KEY_RIGHT))
dx = 1;
if (CheckKeyHeld(KEY_UP))
dy = -1;
if (CheckKeyHeld(KEY_DOWN))
dy = 1;
// Handle the player pressing the 'A' button.
// We use CheckKeyPress() because we *don't* want the action to repeat
// unless the player presses the 'A' button multiple times.
if (CheckKeyPress(KEY_A) && !_has_projectile) {
// ToDo: Add code to respond to 'A' button press here.
_xBall = _xPlayer + 12;
_yBall = _yPlayer + 5;
MoveObjectTo(kObj_Ball, _xBall, _yBall);
_has_projectile = true;
ShowObject(kObj_Ball, true);
}
if (_has_projectile) {
_xBall += 0;
_yBall += 1;
MoveObjectTo(kObj_Ball, _xBall, _yBall);
// Get the width/height of the projectile.
int width, height;
GetObjectSize(kObj_Ball, &width, &height);
// Turn off the projectile when it leaves the screen.
if (_xBall < -width
|| _xBall > SCREEN_WIDTH
|| _yBall < -height
|| _yBall > SCREEN_HEIGHT) {
ShowObject(kObj_Ball, false);
_has_projectile = false;
}
}
// If we need to move the player.
if (dx != 0 || dy != 0) {
// Record the player's new location.
_xPlayer += dx;
_yPlayer += dy;
// Move the player to the new location.
MoveObjectTo(kObj_Player, _xPlayer, _yPlayer);
}
// TODO: Add additional game state updates for level 1 here.
}
bool Field::MoveObject(std::shared_ptr<Unit> object, const long x_steps, const long y_steps, const bool trim) {
const bool x_trim = (x_steps < 0 && static_cast<size_t>(-x_steps) > object->GetX());
const bool y_trim = (y_steps < 0 && static_cast<size_t>(-y_steps) > object->GetY());
if (trim) {
return MoveObjectTo(object, x_trim ? 0 : object->GetX() + x_steps, y_trim ? 0 : object->GetY() + y_steps, true);
}
else {
return MoveObjectTo(object, object->GetX() + x_steps, object->GetY() + y_steps, trim);
}
}
// Update_Level1
// Handle buttons and update game state for level 1.
void GameState::Update_Level1() {
// The arrow keys are used to move the current object.
// We use CheckKeyHeld() because we want the action to repeat as long
// as the player is holding down the button.
int dx = 0;
int dy = 0;
if (CheckKeyHeld(KEY_LEFT))
dx = -1;
if (CheckKeyHeld(KEY_RIGHT))
dx = 1;
if (CheckKeyHeld(KEY_UP))
dy = -1;
if (CheckKeyHeld(KEY_DOWN))
dy = 1;
// Handle the player pressing the 'A' button.
// We use CheckKeyPress() because we *don't* want the action to repeat
// unless the player presses the 'A' button multiple times.
if (CheckKeyPress(KEY_A)) {
// ToDo: Add code to respond to 'A' button press here.
}
// If we need to move the player.
if (dx != 0 || dy != 0) {
// Record the player's new location.
_xPlayer += dx;
_yPlayer += dy;
// Move the player to the new location.
MoveObjectTo(kObj_Player, _xPlayer, _yPlayer);
}
// TODO: Add additional game state updates for level 1 here.
}
// Update_Level1
// Handle buttons and update game state for level 1.
void GameState::Update_Level1() {
// The arrow keys are used to move the current object.
// We use CheckKeyHeld() because we want the action to repeat as long
// as the player is holding down the button.
int dx = 0;
int dy = 0;
if (CheckKeyHeld(KEY_LEFT))
dx = -1;
if (CheckKeyHeld(KEY_RIGHT))
dx = 1;
if (CheckKeyHeld(KEY_UP))
dy = -1;
if (CheckKeyHeld(KEY_DOWN))
dy = 1;
// Handle the player pressing the 'A' button.
// We use CheckKeyPress() because we *don't* want the action to repeat
// unless the player presses the 'A' button multiple times.
if (CheckKeyPress(KEY_A)) {
// ToDo: Add code to respond to 'A' button press here.
}
// If we need to move the player.
if (dx != 0 || dy != 0) {
// Calculate the player's new location.
int x = _xPlayer + dx;
int y = _yPlayer + dy;
// Get the width/height of the player.
int width, height;
GetObjectSize(kObj_Player, &width, &height);
// Don't let the player go outside the screen boundaries.
if (x < 0 || x > SCREEN_WIDTH - width)
dx = 0;
if (y < 0 || y > SCREEN_HEIGHT - height)
dy = 0;
// Record the player's new location.
_xPlayer += dx;
_yPlayer += dy;
// Move the player to the new location.
MoveObjectTo(kObj_Player, _xPlayer, _yPlayer);
}
// TODO: Add additional game state updates for level 1 here.
}