NGN_COLLISIONS.H

Method

uint32_t GetPixel(
    NGN_CollisionMapData* cmap,     // Collision map data
    int32_t position_x,             // X coordinate on the map
    int32_t position_y              // Y coordinate on the map
);

Description

Returns the color of the pixel from the given map at the provided coordinates. If the coordinates are outside the map, it returns 0x00000000. The format of the returned color is 0xRRGGBBAA (RGBA).

Example

uint32_t color = ngn->collisions->GetPixel(
    collision_map,
    wizard.sprite->position.x,
    wizard.sprite->position.y
);

Method

Size2 GetMapSize(NGN_CollisionMapData* cmap);

Description

Returns the size of the given map in Size2 format (width and height).

Example

Size2 world_size = ngn->collisions->GetMapSize(collision_map);

Method

bool HitBox(NGN_Sprite* spr1, NGN_Sprite* spr2);

Description

Performs a bounding box collision check between two sprites. Returns TRUE in case of collision.

Example

if (ngn->collisions->HitBox(player, coin)) {
    hit = true;
} else {
    hit = false;
}

Method

bool PixelPerfect(NGN_Sprite* spr1, NGN_Sprite* spr2);

Description

Performs a pixel-level collision check between two sprites. Returns TRUE in case of collision.

Example

if (ngn->collisions->PixelPerfect(player, coin)) {
    hit = true;
} else {
    hit = false;
}

Note: Pixel-level collision detection consumes a significant amount of CPU resources. Use only in cases where it is absolutely necessary.

Method

bool RaycastPoint(
    NGN_Sprite* spr,       // Sprite
    float position_x,      // X coordinate to check
    float position_y       // Y coordinate to check
);

bool RaycastPoint(NGN_Sprite* spr, Vector2 position);

Description

Checks if there is a visible pixel from the provided sprite at the given coordinates.

Example

if (ngn->collisions->RaycastPoint(coin, 128, 96)) {
    hit = true;
} else {
    hit = false;
}