OpenEuphoria

1. Variable Stack Error

• Posted by Icy_Viking 5 days ago
• 118 views

Hi all, Okay I know this is a C question, but I can't get my gamedev.net profile to login correctly. I keep getting a variable stack error with the boxObjects variable. Oh I am also slowly working on a Box2D wrapper for Euphoria. So it's not entirley non-euphoria related.

I mostly followed this example: [https://github.com/erincatto/box2d-raylib/blob/main/main.c]

I added some of my own changes to play around with.

#include <raylib.h> 
#include <box2d/box2d.h> 
 
#include <assert.h> 
 
int Width = 1624; 
int Height = 720; 
 
#define GROUND_SIZE 14 
#define BOXES 10 
 
typedef struct Object 
{ 
	b2BodyId bodyID; 
	b2Vec2 extent; 
	Texture tex; 
}Object; 
 
void DrawObject(Object* object) 
{ 
	b2Vec2 p = b2Body_GetWorldPoint(object->bodyID, {-object->extent.x,-object->extent.y}); 
	b2Rot rotation = b2Body_GetRotation(object->bodyID); 
	float rads = b2Rot_GetAngle(rotation); 
 
	Vector2 ps = { p.x,p.y }; 
	DrawTextureEx(object->tex, ps, RAD2DEG * rads, 1.0f, WHITE); 
} 
 
int main() 
{ 
	InitWindow(Width, Height, "Playground Physics"); 
	SetTargetFPS(60); 
 
	float lengthPerUnitsMeter = 120.0f; 
	b2SetLengthUnitsPerMeter(lengthPerUnitsMeter); 
 
	b2WorldDef worldDef = b2DefaultWorldDef(); 
 
	worldDef.gravity.y = 10.0f * lengthPerUnitsMeter; 
	b2WorldId worldID = b2CreateWorld(&worldDef); 
 
	b2World_EnableContinuous(worldID, true); 
 
	Texture groundTex = LoadTexture("ground.png"); 
	Texture boxTex = LoadTexture("box.png"); 
 
	b2Vec2 groundExtent = { 0.5f * groundTex.width, 0.5f * groundTex.height }; 
	b2Vec2 boxExtent = { 0.5f * boxTex.width, 0.5f * boxTex.height }; 
 
	b2Polygon groundPoly = b2MakeBox(groundExtent.x, groundExtent.y); 
	b2Polygon boxPoly = b2MakeBox(boxExtent.x, boxExtent.y); 
 
	Object groundObjects[GROUND_SIZE] = { 0 }; 
	for (int i = 0; i < GROUND_SIZE; ++i) 
	{ 
		Object* object = groundObjects + i; 
		b2BodyDef bodyDef = b2DefaultBodyDef(); 
		bodyDef.position = { (2.0f * i + 2.0f) * groundExtent.x, Height - groundExtent.y - 100.0f }; 
 
		object->bodyID = b2CreateBody(worldID, &bodyDef); 
		object->extent = groundExtent; 
		object->tex = groundTex; 
		b2ShapeDef shapeDef = b2DefaultShapeDef(); 
		b2CreatePolygonShape(object->bodyID, &shapeDef, &groundPoly); 
	} 
 
	Object boxObjects[BOXES] = { 0 }; //box objects was corrupted error 
	int boxIndex = 0; 
	for (int i = 0; i < 4; ++i) 
	{ 
			float y = Height - groundExtent.y - 100.0f - (2.5f * i + 2.0f) * boxExtent.y - 20.0f; 
 
			for (int j = 0; j < 4; ++j) 
			{ 
				float x = 0.5f * Width + (3.0f * j - i - 3.0f) * boxExtent.x; 
				//assert(boxIndex < BOXES); //causes program to abort 
 
				Object* object = boxObjects + boxIndex; 
				b2BodyDef bodyDef = b2DefaultBodyDef(); 
				bodyDef.type = b2_dynamicBody; 
				bodyDef.position = { x,y }; 
				object->bodyID = b2CreateBody(worldID, &bodyDef); 
				object->tex = boxTex; 
				object->extent = boxExtent; 
				b2ShapeDef shapeDef = b2DefaultShapeDef(); 
				b2CreatePolygonShape(object->bodyID, &shapeDef, &boxPoly); 
 
				 
				boxIndex += 1; 
				 
			} 
	} 
 
	bool Paused = false; 
 
	while (!WindowShouldClose()) 
	{ 
		if (IsKeyPressed(KEY_P)) 
		{ 
			Paused = !Paused; 
		} 
 
 
		if (Paused == false) 
		{ 
			float deltaTime = GetFrameTime(); 
			b2World_Step(worldID, deltaTime, 4); 
		} 
 
		BeginDrawing(); 
 
		ClearBackground(BLACK); 
 
		DrawFPS(1, 1); 
 
		for (int i = 0; i < GROUND_SIZE; ++i) 
		{ 
			DrawObject(groundObjects + i); 
		} 
 
		for (int i = 0; i < BOXES; ++i) 
		{ 
			DrawObject(boxObjects + i); 
		} 
 
		EndDrawing(); 
	} 
 
	UnloadTexture(groundTex); 
	UnloadTexture(boxTex); 
 
	b2DestroyWorld(worldID); 
 
	CloseWindow(); 
 
	return 0; 
} 

3. Re: Variable Stack Error

• Posted by Icy_Viking 5 days ago
• 110 views

#define BOXES 10 
	for (int i = 0; i < 4; ++i) 
			for (int j = 0; j < 4; ++j) 
				//assert(boxIndex < BOXES); //causes program to abort 

Thanks, it worked!