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--- en:orx:reference:object:snippets [2014/11/27 22:10 (11 years ago)] – OrxOBox and orxVector snippits added. sausage
+++ en:orx:reference:object:snippets [2018/01/21 10:53 (8 years ago)] (current) – Content moved. Deleted. sausage
@@ Line 1: / Line 1: @@
-====== Object: Code Snippets ======
-===== OrxFrame =====
-===== OrxFX =====
-<code>
-orxObject_AddFX(heroObject, "HitPowerPill");
-</code>
-<code>
-[HitPowerPill]
-SlotList = ColorFlash
-[ColorFlash]
-Type        = color
-StartTime   = 0.0
-EndTime     = 1.0
-Curve       = sine
-Absolute    = true
-Period = 0.5
-EndValue   = (0, 128, 255)
-StartValue  = (255, 255, 255)
-</code>
-===== OrxFXPointer =====
-===== OrxObject =====
-==== OrxObject_Create ====
-	orxOBJECT *heroObject = orxObject_CreateFromConfig("HeroObject");
-	orxVECTOR pointA = {500,150,0};
-	orxObject_SetPosition(heroObject, &pointA);
-==== OrxObject_SetPosition ====
-  orxVECTOR tilePos;
-  orxVector_Set(&tilePos, orx2F(80.0f) * x, orx2F(160.0f), orxFLOAT_0);
-  orxObject_SetPosition(tile, &tilePos);
-  orxVECTOR pos;
-  orxObject_GetPosition(player, &pos);
-  pos.fX = -pos.fX;
-  orxObject_SetPosition(player, &pos);
-==== orxObject_SetRotation ====
-Rotation is set in radians. Zero rad vector is equivalent to (1, 0) vector in screen coordinates. In other words it is a horizontal line pointing from left to right.
-Positive rotation is set in clockwise direction. If vector origin was in the center of the screen, then 1 rad would point to the bottom right corner of the screen.
-==== orxObject_SetAngularVelocity ====
-Set angular velocity changes object rotation value over time. Setting positive value make object rotate clockwise.
-TBD: What's the unit of measure?
-By default object starts with zero rotation angle which points horizontally from left to right. As object rotates a full circle its rotation angle value will not reset to zero. Instead it will continue to grow in positive or negative direction according to angular velocity value.
-Thus after one full circle the object rotation value will satisfy the condition:
-<code>
-orxMath_Abs(orxObject_GetRotation(obj)) >= orxMATH_KF_2_PI
-</code>
-==== orxObject_GetWorldRotation and orxObject_GetRotation ====
-Returns current object rotation value in rad. The value returned can be any floating value.
-See orxObject_SetRotation for coordinate system reference.
-See orxObject_SetAngularVelocity for discussion of continuous rotation.
-==== orxObject_CreateNeighborList and orxObject_DeleteNeighborList ====
-Use it to obtain objects within the specified bounding box.
-<code c>
-    orxOBJECT *obj; // comes from mouse click event or in some other way
-    orxVECTOR pos, size;
-    orxFLOAT range = orx2F(250.f);
-    orxOBOX box;
-    orxObject_GetWorldPosition(obj, &pos);
-    orxVector_Set(&size, range, range, orxFLOAT_0);
-    orxOBox_2DSet(&box, &pos, &orxVECTOR_0, &size, orxFLOAT_0);
-    orxBANK *neighbors = orxObject_CreateNeighborList(box);
-    void* cell = orxNULL;
-    while ((cell = orxBank_GetNext(neighbors, cell))) {
-        orxOBJECT **n = cell;
-        orxLOG("object name: %s.", orxObject_GetName(*n));
-    }
-    orxObject_DeleteNeighborList(neighbors);
-</code>
-==== object traversing ====
-[[en:orx:tutorials:community:sergeig:objecttreetraversing|Object Traversing]] has its own page due to somewhat large discussion on the topic.
-===== OrxOBox =====
-Function to return an object within a boxed area:
-orxOBJECT* GetObjectInTheArea(){
-	orxVECTOR objectPickVector;
-	objectPickVector.fX = 878;
-	objectPickVector.fY = 1185;
-	objectPickVector.fZ = -1.0;
-	orxOBOX objectBoxArea;
-	orxVECTOR pivot = {0, 0, 0};
-	orxVECTOR position;
-	position.fX = 834;
-	position.fY = 1150;
-	position.fZ = -0.1;
-	orxVECTOR size;
-	size.fX = 21;
-	size.fY = 160;
-	size.fZ = 1;
-	orxOBox_2DSet(&objectBoxArea, &position, &pivot, &size, 0);
-	orxU32 objectGroupID = orxCamera_GetGroupID(pstCamera, 1);
-	orxOBJECT *objectToFind = orxObject_BoxPick(&objectBoxArea, objectGroupID);
-	return objectToFind;
-}
-===== OrxSpawner =====
-	orxSTRUCTURE *structure = orxStructure_GetFirst(orxSTRUCTURE_ID_SPAWNER );
-	while (structure != orxNULL){
-		orxSPAWNER *spawn = orxSPAWNER(structure);
-		if (orxString_Compare(orxSpawner_GetName(spawn), spawnerName) == 0 ){
-			return spawn;
-		} else {
-			structure = orxStructure_GetNext(structure );
-		}
-	}
-===== OrxStructure =====
-	orxSTRUCTURE *structure = orxStructure_GetFirst(orxSTRUCTURE_ID_OBJECT);
-	while (structure != orxNULL){
-		orxOBJECT *object = orxOBJECT(structure);
-		const orxSTRING objectName = orxObject_GetName(object);
-		orxSTRUCTURE *nextStructure = orxStructure_GetNext(structure);
-		if (orxString_Compare(objectName , "SomeObjectName") == 0){
-			orxObject_SetLifeTime(orxOBJECT(structure), orx2F(0.0));
-		}
-		structure = nextStructure;
-	}
-===== OrxTimeLine =====
-<code>
-orxOBJECT *dummy = orxObject_CreateFromConfig("BringUpGameOverTimelineObject");
-orxObject_AddTimeLineTrack(dummy, "BringUpGameOverTimeline");
-orxObject_EnableTimeLine(dummy, orxTRUE);
-</code>
-<code>
-[BringUpGameOverTimelineObject]
-[BringUpGameOverTimeline]
-.0 = "ShowGameOver"
-</code>
-===== OrxVector =====
-Some ways to initialise an empty orxVECTOR.
-Avoid this:
-    orxVECTOR position;
-Rather, do one of these:
-    orxVECTOR position = {0, 0, 0};
-    orxVECTOR position = orxVECTOR_0;
-    orxVECTOR position;
-    position.fX = 0;
-    position.fY = 0;
-    position.fZ = 0;
-Uninitialised orxVECTORs can create unintended consequences in your game.

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