====== Part 20 - Text and Game Over ======
For our last hurrah, we'll add a score object in the top left corner of the screen and increase it for each monster shot and when the star is collected.
First the score text, graphic and object:
[ScoreText]
String = 000
[ScoreGraphic]
Text = ScoreText
Pivot = top left
[ScoreObject]
Graphic = ScoreGraphic
Position = (-380, -280, 0)
Interesting to note the special ''Text'' definition. ''ScoreGraphic'' uses this instead of a texture from file. And the ''ScoreObject'' uses the graphic section as others before.
Now, in code, add a score variable and a scoreObject at the top of the file:
orxOBJECT *hero;
orxOBJECT *herosGun;
orxOBJECT *scoreObject;
orxS16 score = 0;
Next, create a score object and assign it to the scoreObject variable in the Init() function:
scoreObject = orxObject_CreateFromConfig("ScoreObject");
Add a little function to increase the score and update the ScoreObject:
void UpdateScore(int increase){
score += increase;
orxCHAR formattedScore[6];
orxString_NPrint(formattedScore, sizeof(formattedScore), "%d", score);
orxObject_SetTextString(scoreObject, formattedScore);
}
Add 250 points whenever a monster is hit with a bullet. Add UpdateScore() function calls to:
if (orxString_Compare(senderObjectName, "BulletObject") == 0){
CreateExplosionAtObject(pstRecipientObject, "JellyExploder");
orxObject_SetLifeTime(pstSenderObject, 0);
orxObject_SetLifeTime(pstRecipientObject, 0);
UpdateScore(250);
}
if (orxString_Compare(recipientObjectName, "BulletObject") == 0){
CreateExplosionAtObject(pstSenderObject, "JellyExploder");
orxObject_SetLifeTime(pstSenderObject, 0);
orxObject_SetLifeTime(pstRecipientObject, 0);
UpdateScore(250);
}
And of course, 1000 points bonus if the star is reached. Add the following code:
if (orxString_Compare(senderObjectName, "StarObject") == 0){
orxObject_SetLifeTime(pstSenderObject, 0);
UpdateScore(1000);
}
if (orxString_Compare(recipientObjectName, "StarObject") == 0){
orxObject_SetLifeTime(pstRecipientObject, 0);
UpdateScore(1000);
}
Compile and run it. Shoot some monsters and collect the star and observe the score increasing.
That takes care of having an active score object.
A final thing for the game will be to add a game over panel when the hero dies. For this, we'll have an object that gets created using a timeline track after a two second delay. First, a game over asset:
{{ tutorials:tracks:gameover.png?nolink |}}
Save this into the ''data/texture'' folder as "gameover.png".
Create a simple gameover graphic and object:
[GameOverGraphic]
Texture = gameover.png
Pivot = center
[GameOverObject]
Graphic = GameOverGraphic
Position = (0, 0, -0.1)
Create a timeline track with a single command to create the ''GameOverObject'':
[PopUpGameOverTrack]
2 = Object.Create GameOverObject
Then finally, change the physics handler code, so that when the hero is destroyed, create the timeline track. After a two second delay, the ''GameOverObject'' will be created on screen:
if (orxString_Compare(recipientObjectName, "HeroObject") == 0 &&
orxString_Compare(senderObjectName, "MonsterObject") == 0
){
CreateExplosionAtObject(pstRecipientObject, "HeroExploder");
orxObject_SetLifeTime(pstSenderObject, 0);
orxObject_Enable(pstRecipientObject, orxFALSE);
orxObject_AddTimeLineTrack(scene, "PopUpGameOverTrack");
}
if (orxString_Compare(senderObjectName, "HeroObject") == 0 &&
orxString_Compare(recipientObjectName, "MonsterObject") == 0
){
CreateExplosionAtObject(pstSenderObject, "HeroExploder");
orxObject_SetLifeTime(pstRecipientObject, 0);
orxObject_Enable(pstSenderObject, orxFALSE);
orxObject_AddTimeLineTrack(scene, "PopUpGameOverTrack");
}
Because we never had a reference to the scene before in order to add the PopUpGameOverTrack, we'll need to make a variable reference to it at the top of the code:
orxOBJECT *hero;
orxOBJECT *herosGun;
orxOBJECT *scene;
orxOBJECT *scoreObject;
orxS16 score = 0;
And then set the ''scene'' variable on the orxObject_CreateFromConfig("Scene") in the init() function:
scene = orxObject_CreateFromConfig("Scene");
Compile and run. Kill your hero and wait two seconds. The game over panel will appear:
{{:guides:beginners:beginners-47-game-over.png?nolink|}}
Well friends, that's game over. If you reached the end here, great job! You've learned many of the major features of Orx.
If you need more help, go to the [[en:tutorials:main|tutorials]] section where many of these concepts are covered in greater detail.
If you need quick examples, you can visit the [[en:examples:]] section and search by subject.
If you get stuck, please post it to the [[http://orx-project.org/forum|forum]], and for general chat, come and join us over on [[https://orx-project.org/discord|Discord]]. Hope to see you there.
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