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Fix #1614: add Body:getLocalPoints

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This commit is contained in:
Qais Patankar
2020-12-30 04:27:48 +00:00
parent 95ab4054ff
commit 562cc6b1cb
3 changed files with 38 additions and 0 deletions
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src/modules/physics/box2d/Body.cpp
+24
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@@ -346,6 +346,30 @@ void Body::getLocalVector(float x, float y, float &x_o, float &y_o)
y_o = v.y;
}
int Body::getLocalPoints(lua_State *L)
{
int argc = lua_gettop(L);
int vcount = (int)argc/2;
// at least one point
love::luax_assert_argc(L, 2);
for (int i = 0; i<vcount; i++)
{
float x = (float)lua_tonumber(L, 1);
float y = (float)lua_tonumber(L, 2);
// Remove them, so we don't run out of stack space
lua_remove(L, 1);
lua_remove(L, 1);
// Time for scaling
b2Vec2 point = Physics::scaleUp(body->GetLocalPoint(Physics::scaleDown(b2Vec2(x, y))));
// And then we push the result
lua_pushnumber(L, point.x);
lua_pushnumber(L, point.y);
}
return argc;
}
void Body::getLinearVelocityFromWorldPoint(float x, float y, float &x_o, float &y_o)
{
b2Vec2 v = Physics::scaleUp(body->GetLinearVelocityFromWorldPoint(Physics::scaleDown(b2Vec2(x, y))));