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Introduce external event triggers to Menge and its C-API (#57)
Augmented the event system. •Added ExternalEventTrigger; a trigger object that can be exposed to external code to trigger events. •Added EventEffectAgentState; an event effect that will change the state of target agents. •Added TargetAgentById; an event target for a single agent identified by its unique id. •Augmented the viewer to detect external triggers and connect keyboard and mouse events to them. For details see src/Menge/MengeVis/Runtime/EventInjectContext.h •Added new example exercising this functionality: examples/core/userEvent.xml. A single agent placed in a diamond-shaped environement. The arrow keys control what direction the agent moves (one of the four cardinal directions). •Exposed external triggers in the C-API.
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,9 @@ | ||
| <?xml version="1.0"?> | ||
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| <Project | ||
| scene="userEvent/userEventS.xml" | ||
| behavior="userEvent/userEventB.xml" | ||
| view="userEvent/userEventV.xml" | ||
| model="orca" | ||
| dumpPath="userEvent/images" | ||
| /> |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,57 @@ | ||
| <?xml version="1.0"?> | ||
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| <BFSM> | ||
| <EventSystem conservative="1"> | ||
| <Target name="agent_0" type="agent_id" id="0" /> | ||
| <Effect name="move_left" type="set_agent_state"> | ||
| <StateSelector type="const" name="WalkLeft" /> | ||
| </Effect> | ||
| <Effect name="move_right" type="set_agent_state"> | ||
| <StateSelector type="const" name="WalkRight" /> | ||
| </Effect> | ||
| <Effect name="move_up" type="set_agent_state"> | ||
| <StateSelector type="const" name="WalkUp" /> | ||
| </Effect> | ||
| <Effect name="move_down" type="set_agent_state"> | ||
| <StateSelector type="const" name="WalkDown" /> | ||
| </Effect> | ||
| <Event name="head_left"> | ||
| <Trigger name="left_arrow" type="external" /> | ||
| <Response effect="move_left" target="agent_0" /> | ||
| </Event> | ||
| <Event name="head_right"> | ||
| <Trigger name="right_arrow" type="external" /> | ||
| <Response effect="move_right" target="agent_0" /> | ||
| </Event> | ||
| <Event name="head_up"> | ||
| <Trigger name="up_arrow" type="external" /> | ||
| <Response effect="move_up" target="agent_0" /> | ||
| </Event> | ||
| <Event name="head_down"> | ||
| <Trigger name="down_arrow" type="external" /> | ||
| <Response effect="move_down" target="agent_0" /> | ||
| </Event> | ||
| </EventSystem> | ||
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| <State name="Stand" final="0" > | ||
| <GoalSelector type="identity" /> | ||
| <VelComponent type="zero" /> | ||
| </State> | ||
| <State name="WalkLeft" final="0" > | ||
| <GoalSelector type="identity" /> | ||
| <VelComponent type="const_dir" x="-1" y="0" /> | ||
| </State> | ||
| <State name="WalkRight" final="0" > | ||
| <GoalSelector type="identity" /> | ||
| <VelComponent type="const_dir" x="1" y="0" /> | ||
| </State> | ||
| <State name="WalkUp" final="0" > | ||
| <GoalSelector type="identity" /> | ||
| <VelComponent type="const_dir" x="0" y="-1" /> | ||
| </State> | ||
| <State name="WalkDown" final="0" > | ||
| <GoalSelector type="identity" /> | ||
| <VelComponent type="const_dir" x="0" y="1" /> | ||
| </State> | ||
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| </BFSM> |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,46 @@ | ||
| <?xml version="1.0"?> | ||
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| <Experiment version="2.0"> | ||
| <SpatialQuery type="kd-tree" test_visibility="false" /> | ||
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| <OpenSteer max_force="8" leak_through="0.1" reaction_time="0.5" /> | ||
| <Common time_step="0.1" /> | ||
| <GCF reaction_time="0.5" max_agent_dist="2" max_agent_force="3" agent_interp_width="0.1" agent_force_strength="0.35" /> | ||
| <Helbing agent_scale="2000" obstacle_scale="4000" reaction_time="0.5" body_force="1200" friction="2400" force_distance="0.015" /> | ||
| <Johansson agent_scale="25" obstacle_scale="35" reaction_time="0.5" force_distance="0.15" stride_time="0.5" /> | ||
| <Karamouzas orient_weight="0.8" fov="200" reaction_time="0.4" wall_steepness="2" wall_distance="2" colliding_count="5" d_min="1" d_mid="8" d_max="10" agent_force="4" /> | ||
| <Zanlungo agent_scale="2000" obstacle_scale="4000" reaction_time="0.5" force_distance="0.005" /> | ||
| <Dummy stddev="0.05" /> | ||
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| <AgentProfile name="group1" > | ||
| <OpenSteer tau="3" tauObst="6" /> | ||
| <Common max_angle_vel="360" max_neighbors="10" obstacleSet="1" neighbor_dist="5" r="0.19" class="1" pref_speed="1.04" max_speed="2" max_accel="5" priority="0.0"> | ||
| <Property name="pref_speed" dist="n" mean="1.3" stddev="0.25" /> | ||
| </Common> | ||
| <PedVO factor="1.57" buffer="0.9" tau="3" tauObst="0.1" turningBias="1.0" /> | ||
| <GCF stand_depth="0.18" move_scale="0.53" slow_width="0.25" sway_change="0.05" /> | ||
| <Helbing mass="80" /> | ||
| <Johansson fov_weight="0.16" /> | ||
| <Karamouzas personal_space="0.69" anticipation="8" /> | ||
| <ORCA tau="3.0" tauObst="0.15" /> | ||
| <Zanlungo mass="80" /> | ||
| </AgentProfile> | ||
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| <AgentGroup> | ||
| <ProfileSelector type="const" name="group1" /> | ||
| <StateSelector type="const" name="Stand" /> | ||
| <Generator type="explicit"> | ||
| <Agent p_x="0" p_y="0" /> | ||
| </Generator> | ||
| </AgentGroup> | ||
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| <ObstacleSet type="explicit" class="1"> | ||
| <Obstacle closed="1" > | ||
| <Vertex p_x = "0" p_y = "5"/> | ||
| <Vertex p_x = "5" p_y = "0"/> | ||
| <Vertex p_x = "0" p_y = "-5"/> | ||
| <Vertex p_x = "-5" p_y = "0"/> | ||
| </Obstacle> | ||
| </ObstacleSet> | ||
| </Experiment> |
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| Original file line number | Diff line number | Diff line change |
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| @@ -0,0 +1,14 @@ | ||
| <?xml version="1.0"?> | ||
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| <View width="530" height="530" > | ||
| <!-- Multiple cameras are mapped to a key from 1-9 in the order they are defined here --> | ||
| <Camera xpos="-0.235762" ypos="9.12995" zpos="0.060852" xtgt="-0.235762" ytgt="-5.56976e-05" ztgt="0.050852" far="400" near="0.01" fov="0.0" orthoScale="0.78749" /> | ||
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| <!-- Comment out lights for a constant-illuminated visualization --> | ||
| <Light x="1" y="0" z="-1" type="directional" diffR="1.0" diffG="0.8" diffB="0.8" space="camera"/> | ||
| <Light x="-1" y="0" z="-1" type="directional" diffR="0.8" diffG="0.8" diffB="1.0" space="camera"/> | ||
| <Light x="0" y="1" z="0" type="directional" diffR="0.8" diffG="0.8" diffB="0.8" space="world"/> | ||
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| <Watermark file_name="../../mengeLogo.png" alignment="bottom_right" scale="0.5" opacity="0.25"/> | ||
| <Font r="1.0" g="1.0" b="1.0" a="0.75" /> | ||
| </View> |
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