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| Math: vertical viewing angle |
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Posted by: Freaksken - 2019-07-15, 08:18 PM - Forum: Pawn Scripting
- Replies (4)
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I have a system in which I've worked out the code for giving an NPC a horizontal viewing angle (left image). How would I achieve a similar result, but now for the vertical direction (right image)?
![[Image: viewing_angle.png?raw=1]](https://www.dropbox.com/s/tl2biem7emg13be/viewing_angle.png?raw=1)
Below is the code for the left image, for reference. This is a math question, thus the code isn't really necessary, but might help you understand the problem. Just ignore that the angles start from the NPC's center instead of his eyes, that's easy enough to fix. As you can see, the z-position is irrelevant for the horizontal viewing angle, but probably not for the vertical viewing angle (not sure).
PHP Code: static bool:FAI_IsPlayerInAggroViewingAngle(playerid, npcid) {
// Get NPC position
new Float:xn, Float:yn, Float:zn;
FCNPC_GetPosition(npcid, xn, yn, zn);
// Get player position
new Float:xp, Float:yp, Float:zp;
if(!IsPlayerNPC(playerid)) {
GetPlayerPos(playerid, xp, yp, zp);
} else {
FCNPC_GetPosition(playerid, xp, yp, zp);
}
// Calculate the angle between these 2 points
new Float:angleBetweenPoints = atan2(xp - xn, yp - yn);
// Get the NPC facing angle adjusted for the weird GTA angle system
new Float:npcFacingAngle = 360.0 - FCNPC_GetAngle(npcid);
// Calculate the smallest difference between these 2 angles as a value between -180.0 and 180.0
new Float:angleDifference = angleBetweenPoints - npcFacingAngle;
if(angleDifference > 180.0) {
angleDifference -= 360.0;
}
if(angleDifference < -180.0) {
angleDifference = 360.0;
}
// Get the absolute value of this angle
angleDifference = floatabs(angleDifference);
// Check if the player is within the aggro viewing angle
if(angleDifference <= FAI_NPCs[npcid][FAI_NPC_AGGRO_VIEWING_ANGLE][playerid]/2) {
return true;
}
return false;
}
Here's another visualisation of what the result should look like:
![[Image: viewing_angle2.png?raw=1]](https://www.dropbox.com/s/zwvw8zn9i422xdf/viewing_angle2.png?raw=1)
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| A weird problem with includes |
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Posted by: mouiz - 2019-07-14, 01:00 PM - Forum: Pawn Scripting
- Replies (7)
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Quote:#include <../../gamemodes/modes/mode_robbery.pwn>
#include <../../gamemodes/modes/mode_dogfight.pwn>
These are ^ two includes in the 'gamemodes/modes' folder.
If i arrange them like this:?
Quote:#include <../../gamemodes/modes/mode_dogfight.pwn>
#include <../../gamemodes/modes/mode_robbery.pwn>
the 'mode_dogfight' works (gets included)?and the second one is ignored (it shows undefined symbol errors since the definitions of the functions are in the include)
If i arrange them oppositely then the 'mode_robbery' works, the second one is ignore.
How can i fix this?
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| What would you start? |
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Posted by: mouiz - 2019-07-12, 07:42 AM - Forum: Life
- Replies (5)
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If you had 100-500$ to start something profitable, what would it be ? Take it as a challenge ..
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| Streamer |
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Posted by: Jimmy - 2019-07-10, 06:18 AM - Forum: Questions and Suggestions
- Replies (5)
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Now that Streamer by Incognito is available as open source, add that (as is or improved version to fit Open.MP) as default streamer.
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