Changeset 2001 for code/branches/objecthierarchy/src/core/input

Timestamp:

Oct 23, 2008, 12:15:09 AM (16 years ago)

Author:

rgrieder

Message:

• Fixed issue with relative mouse movements.
• Fixed bug when parsing commands in keybindings.ini
• Fixed potential framerate dependency with relative movements
• Simplified the use of a configured input command
• Changed how parametrised input is handled (superposition and [-1,1]-clamp instead of average).

Location:

code/branches/objecthierarchy/src/core/input

Files:

• Button.cc (modified) (1 diff)
• HalfAxis.h (modified) (2 diffs)
• InputCommands.cc (modified) (3 diffs)
• InputCommands.h (modified) (2 diffs)
• KeyBinder.cc (modified) (6 diffs)
• KeyBinder.h (modified) (4 diffs)

code/branches/objecthierarchy/src/core/input/Button.cc

@@ -175 +175 @@
 
                 // check for param command
-                int paramIndex = eval.getConsoleCommand()->getAxisParamIndex();
+                int paramIndex = eval.getConsoleCommand()->getInputConfiguredParam_();
                 if (paramIndex >= 0)
                 {
                     // parameter supported command
                     ParamCommand* cmd = new ParamCommand();
-                    cmd->paramModifier_ = paramModifier;
-                    cmd->bRelative_ = eval.getConsoleCommand()->getIsAxisRelative();
+                    cmd->scale_ = paramModifier;
 
                     // add command to the buffer if not yet existing
                     for (unsigned int iParamCmd = 0; iParamCmd < paramCommandBuffer_->size(); iParamCmd++)
                     {
-                        if (getLowercase((*paramCommandBuffer_)[iParamCmd]->evaluation_.getOriginalCommand())
-                            == getLowercase(commandStr))
+                        if ((*paramCommandBuffer_)[iParamCmd]->evaluation_.getConsoleCommand()
+                            == eval.getConsoleCommand())
                         {
                             // already in list

code/branches/objecthierarchy/src/core/input/HalfAxis.h

@@ -50 +50 @@
             , paramCommands_(0)
             , nParamCommands_(0)
-            , wasDown_(false)
+            , pressed_(false)
             , hasChanged_(false)
         { }
@@ -65 +65 @@
 
         // button related
-        bool wasDown_;
+        bool pressed_;
         bool hasChanged_;
     };

code/branches/objecthierarchy/src/core/input/InputCommands.cc

@@ -34 +34 @@
 
 #include "InputCommands.h"
+#include "util/Math.h"
 #include "core/CommandExecutor.h"
 
@@ -51 +52 @@
     bool BufferedParamCommand::execute()
     {
-        if (nValuesAdded_)
+        if (this->abs_ != 0.0f || this->rel_ != 0.0f)
         {
-            BufferedParamCommand& cmd = *this;
-            cmd.evaluation_.setEvaluatedParameter(cmd.paramIndex_, cmd.value_);
+            evaluation_.setEvaluatedParameter(paramIndex_, Vector2(abs_, rel_));
             // reset
-            cmd.nValuesAdded_ = 0;
-            cmd.value_ = 0;
-            return cmd.evaluation_.execute();
+            rel_ = 0.0;
+            abs_ = 0.0;
+            return evaluation_.execute();
         }
         else
@@ -79 +79 @@
         BufferedParamCommand& cmd = *paramCommand_;
         // command has an additional parameter
-        if (bRelative_)
+        if (rel != 0.0f)
         {
-            if (rel != 0.0f)
-            {
-                // we have to calculate a relative movement.
-                // paramModifier_ says how much one keystroke is
-                cmd.value_ += paramModifier_ * rel;
-            }
+            // calculate relative movement.
+            // scale_ says how much one keystroke is
+            cmd.rel_ += scale_ * rel;
         }
-        else if (abs != 0.0f)
+
+        if (abs != 0.0f)
         {
-            // Usually, joy sticks create 'noise' (they return values if they're in 0 position)
-            // and normally this is caught in tickInput(), but that threshold cannot be to high
-            // in order to preserve accuracy. Instead, we have to catch the problem here. An example:
-            // Someone only uses buttons with an active joystick. The joy stick value could then
-            // be 0.05 for instance and the the key value 1. Without handling the problem, the final
-            // value would be computed to (1+0.05)/2=0.5025 which is not what the user expects.
-            float absQ = abs * abs;
-            float valueQ = cmd.value_ * cmd.value_;
-            if (absQ > 50.0f * valueQ) // ease up comparison by using quadratics
-            {
-                cmd.value_ = abs * paramModifier_;
-                cmd.nValuesAdded_ = 1;
-            }
-            else if (absQ * 50.0f < valueQ)
-            {
-                // abs is too small, we just don't do anything
-            }
-            else
-            {
-                // we have to calculate the absolute position of the axis.
-                // Since there might be another axis that is affected, we have to wait and
-                // store the result in a temporary place
-                cmd.value_ = (cmd.value_ * cmd.nValuesAdded_ + paramModifier_ * abs) / ++cmd.nValuesAdded_;
-            }
+            cmd.abs_ += scale_ * abs;
+            if (cmd.abs_ > 1.0)
+                cmd.abs_ = 1.0;
+            if (cmd.abs_ < -1.0)
+                cmd.abs_ = -1.0;
         }
         return true;

code/branches/objecthierarchy/src/core/input/InputCommands.h

@@ -44 +44 @@
     {
     public:
-        BufferedParamCommand() : value_(0.0f), nValuesAdded_(0), paramIndex_(-1) { }
+        BufferedParamCommand() : abs_(0.0f), rel_(0.0), paramIndex_(-1) { }
         bool execute();
 
-        float value_;
-        unsigned int nValuesAdded_;
+        float abs_;
+        float rel_;
         int paramIndex_;
         CommandEvaluation evaluation_;
@@ -82 +82 @@
     {
     public:
-        ParamCommand() : bRelative_(false), paramModifier_(1.0f), paramCommand_(0) { }
+        ParamCommand() : scale_(1.0f), paramCommand_(0) { }
         bool execute(float abs = 1.0f, float rel = 1.0f);
 
-        bool bRelative_;
-        float paramModifier_;
+        float scale_;
         BufferedParamCommand* paramCommand_;
     };

code/branches/objecthierarchy/src/core/input/KeyBinder.cc

@@ -137 +137 @@
         SetConfigValue(analogThreshold_, 0.05f)
             .description("Threshold for analog axes until which the state is 0.");
+        SetConfigValue(bFilterAnalogNoise_, false)
+            .description("Specifies whether to filter small analog values like joy stick fluctuations.");
         SetConfigValue(mouseSensitivity_, 1.0f)
             .description("Mouse sensitivity.");
@@ -145 +147 @@
         SetConfigValue(mouseSensitivityDerived_, 1.0f)
             .description("Mouse sensitivity if mouse input is derived.");
-        SetConfigValue(mouseWheelStepSize_, 120.0f)
+        SetConfigValue(mouseWheelStepSize_, 120)
             .description("Equals one step of the mousewheel.");
         SetConfigValue(buttonThreshold_, 0.80f)
@@ -323 +325 @@
     void KeyBinder::tickMouse(float dt)
     {
-        tickDevices(mouseAxes_, mouseAxes_ + MouseAxisCode::numberOfAxes * 2);
-
         if (bDeriveMouseInput_)
         {
+            // only update when derive dt has passed
             if (deriveTime_ > derivePeriod_)
             {
@@ -357 +358 @@
                 deriveTime_ += dt;
         }
-    }
-
-    void KeyBinder::tickDevices(HalfAxis* begin, HalfAxis* end)
-    {
-        for (HalfAxis* current = begin; current < end; ++current) // pointer arithmetic
-        {
-            // button mode
-            // TODO: optimize out all the half axes that don't act as a button at the moment
-            if (current->hasChanged_)
-            {
-                if (!current->wasDown_ && current->absVal_ > current->buttonThreshold_)
-                {
-                    current->wasDown_ = true;
-                    if (current->nCommands_[KeybindMode::OnPress])
-                        current->execute(KeybindMode::OnPress);
-                }
-                else if (current->wasDown_ && current->absVal_ < current->buttonThreshold_)
-                {
-                    current->wasDown_ = false;
-                    if (current->nCommands_[KeybindMode::OnRelease])
-                        current->execute(KeybindMode::OnRelease);
-                }
-                current->hasChanged_ = false;
-            }
-
-            if (current->wasDown_)
-            {
-                if (current->nCommands_[KeybindMode::OnHold])
-                    current->execute(KeybindMode::OnHold);
-            }
-
-            // these are the actually useful axis bindings for analog input
-            if (current->relVal_ > analogThreshold_ || current->absVal_ > analogThreshold_)
-            {
-                current->execute();
-            }
+
+        for (int i = 0; i < MouseAxisCode::numberOfAxes * 2; i++)
+        {
+            // Why dividing relative value by dt? The reason lies in the simple fact, that when you
+            // press a button that has relative movement, that value has to be multiplied by dt to be
+            // frame rate independant. This can easily (and only) be done in tickInput(float).
+            // Hence we need to divide by dt here for the mouse to compensate, because the relative
+            // move movements have nothing to do with dt.
+            if (dt != 0.0f)
+            {
+                // just ignore if dt == 0.0 because we have multiplied by 0.0 anyway..
+                mouseAxes_[i].relVal_ /= dt;
+            }
+
+            tickHalfAxis(mouseAxes_[i]);
+        }
+    }
+
+    void KeyBinder::tickJoyStick(float dt, unsigned int joyStick)
+    {
+        for (int i = 0; i < JoyStickAxisCode::numberOfAxes * 2; i++)
+        {
+            tickHalfAxis(joyStickAxes_[joyStick][i]);
+        }
+    }
+
+    void KeyBinder::tickHalfAxis(HalfAxis& halfAxis)
+    {
+        // button mode
+        // TODO: optimize out all the half axes that don't act as a button at the moment
+        if (halfAxis.hasChanged_)
+        {
+            if (!halfAxis.pressed_ && halfAxis.absVal_ > halfAxis.buttonThreshold_)
+            {
+                // key pressed event
+                halfAxis.pressed_ = true;
+                if (halfAxis.nCommands_[KeybindMode::OnPress])
+                    halfAxis.execute(KeybindMode::OnPress);
+            }
+            else if (halfAxis.pressed_ && halfAxis.absVal_ < halfAxis.buttonThreshold_)
+            {
+                // key released event
+                halfAxis.pressed_ = false;
+                if (halfAxis.nCommands_[KeybindMode::OnRelease])
+                    halfAxis.execute(KeybindMode::OnRelease);
+            }
+            halfAxis.hasChanged_ = false;
+        }
+
+        if (halfAxis.pressed_)
+        {
+            // key held event
+            if (halfAxis.nCommands_[KeybindMode::OnHold])
+                halfAxis.execute(KeybindMode::OnHold);
+        }
+
+        // these are the actually useful axis bindings for analog input
+        if (!bFilterAnalogNoise_ || halfAxis.relVal_ > analogThreshold_ || halfAxis.absVal_ > analogThreshold_)
+        {
+            halfAxis.execute();
         }
     }
@@ -407 +432 @@
         int rel[] = { rel_.x, -rel_.y };
 
-        if (!bDeriveMouseInput_)
+        if (bDeriveMouseInput_)
+        {
+            mouseRelative_[0] += rel[0];
+            mouseRelative_[1] += rel[1];
+        }
+        else
         {
             for (int i = 0; i < 2; i++)
@@ -437 +467 @@
             }
         }
-        else
-        {
-            mouseRelative_[0] += rel[0];
-            mouseRelative_[1] += rel[1];
-        }
 
         // relative

code/branches/objecthierarchy/src/core/input/KeyBinder.h

@@ -71 +71 @@
         void tickJoyStick(float dt, unsigned int joyStick);
         // internal
-        void tickDevices(HalfAxis* begin, HalfAxis* end);
+        void tickHalfAxis(HalfAxis& halfAxis);
 
         void buttonThresholdChanged();
@@ -149 +149 @@
         //! Filename of default keybindings.
         std::string defaultKeybindings_;
+        //! Whether to filter small value analog input
+        bool bFilterAnalogNoise_;
         //! Threshold for analog triggers until which the state is 0.
         float analogThreshold_;
@@ -162 +164 @@
         float mouseSensitivityDerived_;
         //! Equals one step of the mousewheel
-        float mouseWheelStepSize_;
+        int mouseWheelStepSize_;
 
         //##### Constant config variables #####
@@ -198 +200 @@
     { joyStickButtons_[joyStickID][id].execute(KeybindMode::OnHold); }
 
-    inline void KeyBinder::tickJoyStick(float dt, unsigned int joyStick)
-    {
-        tickDevices(&joyStickAxes_[joyStick][0], &joyStickAxes_[joyStick][JoyStickAxisCode::numberOfAxes * 2]);
-    }
-
     inline void KeyBinder::tickInput(float dt)
     {
         // execute all buffered bindings (additional parameter)
         for (unsigned int i = 0; i < paramCommandBuffer_.size(); i++)
+        {
+            paramCommandBuffer_[i]->rel_ *= dt;
             paramCommandBuffer_[i]->execute();
+        }
 
         // always reset the relative movement of the mouse