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Dogcows Code - chaz/yoink/blob - src/Character.hh
2 /*******************************************************************************
4 Copyright (c) 2009, Charles McGarvey
7 Redistribution and use in source and binary forms, with or without
8 modification, are permitted provided that the following conditions are met:
10 * Redistributions of source code must retain the above copyright notice,
11 this list of conditions and the following disclaimer.
12 * Redistributions in binary form must reproduce the above copyright notice,
13 this list of conditions and the following disclaimer in the documentation
14 and/or other materials provided with the distribution.
16 THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
17 AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18 IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
19 DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
20 FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21 DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
22 SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
23 CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
24 OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
25 OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27 *******************************************************************************/
29 #ifndef _CHARACTER_HH_
30 #define _CHARACTER_HH_
32 #include <boost/shared_ptr.hpp>
34 #include <Moof/Entity.hh>
35 #include <Moof/Event.hh>
36 #include <Moof/Math.hh>
37 #include <Moof/RK4.hh>
39 #include "Animation.hh"
45 typedef boost::shared_ptr
<Character
> CharacterP
;
49 * Parent class of animate objects with "personalities." This basically
50 * includes the heroine herself and the bad guys.
53 struct Character
: public Mf::Entity
61 Derivative operator*(Mf::Scalar dt) const
63 Derivative derivative;
64 derivative.velocity = dt * velocity;
65 derivative.force = dt * force;
69 Derivative operator+(const Derivative& other) const
71 Derivative derivative;
72 derivative.velocity = velocity + other.velocity;
73 derivative.force = force + other.force;
93 Mf::Scalar inverseMass;
97 velocity = momentum * inverseMass;
101 void getDerivative(Derivative& derivative, Mf::Scalar t) const
103 //derivative.velocity = Mf::Vector2(0.0, 0.0);
104 //derivative.force = Mf::Vector2(0.0, 0.0);
105 derivative.velocity = velocity;
106 derivative.force = force;
108 //Mf::Vector2 x = position - Mf::Vector2(500.0, 200.0);
109 //derivative.force += -15.0 * x - 1.5 * velocity;
112 void applyDerivative(const Derivative& derivative, Mf::Scalar dt)
114 position += dt * derivative.velocity;
115 momentum += dt * derivative.force;
119 // these two operator overloads all using the state in generic
120 // interpolator implementations
122 State operator*(Mf::Scalar scalar) const
125 state.position *= scalar;
126 state.momentum *= scalar;
131 State operator+(const State& state) const
133 State newState = *this;
134 newState.position += state.position;
135 newState.momentum += state.momentum;
136 newState.recalculate();
148 static const Mf::Scalar z
= 96.0;
152 Mf::Vector2 userForce
;
156 Character(const std::string
& name
);
157 virtual ~Character() {}
159 virtual void update(Mf::Scalar t
, Mf::Scalar dt
);
160 virtual void draw(Mf::Scalar alpha
) const;
168 #endif // _CHARACTER_HH_
170 /** vim: set ts=4 sw=4 tw=80: *************************************************/
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