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Refactored sprite & transform. Replaced distance with collider when picking objects up.

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This commit is contained in:
Tiberiu Chibici
2016-12-15 22:52:36 +02:00
parent ddae4934ef
commit 42f0d4125b
20 changed files with 273 additions and 208 deletions
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53
src/math/GameMath.cpp
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@@ -5,36 +5,23 @@
* Author: tibi
*/
#include <components/basic/Sprite.h>
#include <math/GameMath.h>
#include <model/Transform.h>
#include <utils/Rect.h>
#include <cmath>
using namespace farmlands::components::basic;
namespace farmlands {
static const float Sqrt2 = 1.41421356237309504880f;
static const float DirectionVectorX[] =
void move(float *x, float *y, model::Direction direction, float distance)
{
0, 1, 0, Sqrt2, // none, E, N, NE
-1, 0, -Sqrt2, 0, // W, inv, NW, inv
0, Sqrt2, 0, 0, // S, SE, inv, inv
-Sqrt2, 0, 0, 0 // SW, inv, inv, inv
};
float dx = cosf(degToRad(direction));
float dy = sinf(degToRad(direction));
static const float DirectionVectorY[] =
{
0, 0, -1, -Sqrt2, // none, E, N, NE
0, 0, -Sqrt2, 0, // W, inv, NW, inv
1, Sqrt2, 0, 0, // S, SE, inv, inv
Sqrt2, 0, 0, 0 // SW, inv, inv, inv
};
void translate(float x, float y, model::Direction direction, float distance, float* outX, float *outY)
{
float dx = DirectionVectorX[direction];
float dy = DirectionVectorY[direction];
*outX = x + dx * distance;
*outY = y + dy * distance;
*x += dx * distance;
*x += dy * distance;
}
void moveTowards(float *x, float *y, float towardsX, float towardsY, float speed)
@@ -49,4 +36,24 @@ float distanceSq(float x0, float y0, float x1, float y1)
return (x0 - x1) * (x0 - x1) + (y0 - y1) * (y0 - y1);
}
bool checkCollision(model::GameObject* objA, model::GameObject* objB)
{
Sprite* sprA = objA->component<Sprite>();
Sprite* sprB = objB->component<Sprite>();
// If both have sprites, they intersect if their rectangles intersect
if (sprA && sprB)
return sprA->boundaries().intersects(sprB->boundaries());
// Only one has sprite. They collide if sprite rectangle contains the other point
if (sprA)
return sprA->boundaries().contains(objB->transform.globalX(), objB->transform.globalY());
if (sprB)
return sprB->boundaries().contains(objA->transform.globalX(), objA->transform.globalY());
// Objects collide if their coordinates are equal.
return std::abs(objA->transform.globalX() - objB->transform.globalX()) < 1e-10
&& std::abs(objA->transform.globalY() - objB->transform.globalY()) < 1e-10;
}
}

22
src/math/GameMath.h
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@@ -9,9 +9,20 @@
#define MATH_GAMEMATH_H_
#include <model/Direction.h>
#include <model/GameObject.h>
#define _USE_MATH_DEFINES
#include <cmath>
namespace farmlands {
void move(float* x, float* y, model::Direction direction, float distance);
void moveTowards(float *x, float *y, float towardsX, float towardsY, float speed);
float distanceSq(float x0, float y0, float x1, float y1);
bool checkCollision(model::GameObject* objA, model::GameObject* objB);
template<typename TVal, typename TMin, typename TMax>
TVal clamp (TVal value, TMin min, TMax max)
{
@@ -24,9 +35,12 @@ namespace farmlands {
return value;
}
void translate(float x, float y, model::Direction direction, float distance, float* outX, float* outY);
void moveTowards(float *x, float *y, float towardsX, float towardsY, float speed);
float distanceSq(float x0, float y0, float x1, float y1);
/**
* Converts from degrees to radians
*/
inline float degToRad(float angle)
{
return angle * (float)M_PI / 360.0f;
}
}
#endif /* MATH_GAMEMATH_H_ */